diff --git a/README.md b/README.md
index f76421c..a2034cf 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,11 @@
-# Campus_second-hand_trading_platform
+# Campus_second-hand_trading_platform（校园交易平台）
 
+## 项目介绍
+- 项目基于`SpringBoot`+`Mybatis`+`Vue3`+`Element-plus`构建;
+- 主要功能有：用户注册、用户登录、用户信息修改、商品发布、商品浏览、商品收藏、商品浏览、商品评论、商品搜索、商品购买、商品交易、商品评价等。
+
+## 项目目录说明
+- `.git`：git仓库管理文件
+- `front_page`：前端页面代码文件夹
+- `trading_platform`：后端代码文件夹
+- `README.md`：项目说明文件
diff --git a/document/secondhandtransactions.sql b/document/secondhandtransactions.sql
new file mode 100644
index 0000000..c28c827
--- /dev/null
+++ b/document/secondhandtransactions.sql
@@ -0,0 +1,189 @@
+-- 创建名为`secondhandtransactions`的数据库
+CREATE DATABASE `secondhandtransactions`;
+
+-- 使用`secondhandtransactions`数据库
+USE `secondhandtransactions`;
+
+-- 创建`role`表，用于定义系统中的角色
+CREATE TABLE role
+(
+    role_id     INT AUTO_INCREMENT PRIMARY KEY COMMENT '角色ID(主键)',
+    role_name   VARCHAR(18)  NOT NULL COMMENT '角色名称',
+    remark      VARCHAR(128) NULL COMMENT '备注',
+    status      TINYINT(1)   NOT NULL DEFAULT 1 COMMENT '状态(0:禁用，1:启用)',
+    create_time TIMESTAMP    NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+    update_time TIMESTAMP    NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间'
+);
+
+-- 插入角色数据
+INSERT INTO role (role_name, remark, status)
+VALUES ('管理员', '拥有平台所有管理权限，负责审核、管理用户和商品', 1),
+       ('普通用户', '可以浏览商品、发布商品、进行交易', 1),
+       ('配送员', '负责配送商品，完成交易，管理自己的订单', 1),
+       ('商家', '商家可以发布商品，管理自己的商品和订单', 1);
+
+-- 创建`users`表，用于定义系统中的用户
+CREATE TABLE users
+(
+    user_id      INT AUTO_INCREMENT PRIMARY KEY COMMENT '用户ID(主键)',
+    head_pic_url VARCHAR(128) NULL COMMENT '头像',
+    nick_name    VARCHAR(18)  NULL COMMENT '昵称',
+    username     VARCHAR(18)  NOT NULL COMMENT '用户名',
+    mobile       VARCHAR(15)  NOT NULL COMMENT '手机号',
+    password     VARCHAR(255) NOT NULL COMMENT '加密后的密码',
+    sex          CHAR(1)      NOT NULL COMMENT '性别(0：女，1：男) ',
+    email        VARCHAR(255) NOT NULL comment '邮箱',
+    address      VARCHAR(70)  NOT NULL COMMENT '地址',
+    create_time  TIMESTAMP    NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+    update_time  TIMESTAMP    NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
+
+    CONSTRAINT nick_name UNIQUE (nick_name), -- 确保昵称唯一性
+    CONSTRAINT username UNIQUE (username)    -- 确保用户名唯一性
+);
+
+-- 创建`deliveries`表，用于定义配送员信息
+CREATE TABLE deliveries
+(
+    delivery_id        INT PRIMARY KEY AUTO_INCREMENT COMMENT '配送ID',
+    order_id           INT                                          NOT NULL COMMENT '订单ID（外键引用 orders）',
+    delivery_person_id INT                                          NOT NULL COMMENT '配送员ID（外键引用 users）',
+    delivery_status    ENUM ('pending', 'in_progress', 'delivered') NOT NULL DEFAULT 'pending' COMMENT '配送状态',
+    delivered_at       TIMESTAMP                                    NULL COMMENT '配送完成时间',
+    CONSTRAINT order_id_fk_delivery FOREIGN KEY (order_id) REFERENCES orders (order_id),        -- 外键引用orders表
+    CONSTRAINT delivery_person_id_fk_delivery FOREIGN KEY (delivery_person_id) REFERENCES users (user_id) -- 外键引用users表
+);
+
+-- 创建`user_roles`关联表,用于用户和角色之间的多对多关系
+CREATE TABLE user_roles
+(
+    user_id     INT NOT NULL COMMENT '用户ID(外键引用 user 表)',
+    role_id     INT NOT NULL COMMENT '角色ID(外键引用 role 表)',
+    PRIMARY KEY (user_id, role_id),
+    CONSTRAINT fk_user FOREIGN KEY (user_id) REFERENCES users (user_id),                 -- 外键引用users表
+    CONSTRAINT fk_role FOREIGN KEY (role_id) REFERENCES role (role_id)                   -- 外键引用role表
+);
+
+INSERT INTO users (nick_name, mobile, username, password, sex, email, address)
+VALUES ('user001', '13800000001', 'user001', 'password123', '1', 'user001@example.com', '中区1'),
+       ('user002', '13800000002', 'user002', 'password456', '1', 'user002@example.com', '中区1'),
+       ('admin', '13800000003', 'admin', 'password789', '1', 'admin@example.com', '中区1'),
+       ('deliveries', '13800000004', 'deliveries', 'password147', '1', 'deliveries@example.com', '中区1');
+
+# -- 将用户与普通用户角色关联
+# INSERT INTO user_roles (user_id, role_id)
+# VALUES (LAST_INSERT_ID(), 2);
+# 
+# -- 将用户与商家角色关联
+# INSERT INTO user_roles (user_id, role_id)
+# VALUES (LAST_INSERT_ID(), 3);
+
+-- 创建`orders`表，用于存储订单信息
+CREATE TABLE orders
+(
+    order_id     INT PRIMARY KEY AUTO_INCREMENT COMMENT '订单ID(主键)',
+    buyer_id     INT                                                           NOT NULL COMMENT '买家用户ID',
+    item_id      INT                                                           NOT NULL COMMENT '商品ID',
+    seller_id    INT                                                           NOT NULL COMMENT '卖家用户ID',
+    address      VARCHAR(255)                                                  NOT NULL COMMENT '收货地址',
+    total_amount DECIMAL(10, 2)                                                NOT NULL COMMENT '订单总金额',
+    status       ENUM ('pending', 'paid', 'shipped', 'completed', 'cancelled') NOT NULL DEFAULT 'pending'
+        COMMENT '订单状态：pending-订单已创建，等待支付；paid-订单已支付，等待发货；shipped-订单已发货，等待收货；completed-订单已完成；cancelled-订单已取消',
+    created_at   TIMESTAMP                                                     NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '订单创建时间',
+    updated_at   TIMESTAMP                                                     NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '订单更新时间',
+
+    -- 外键约束
+    CONSTRAINT buyer_id_fk_orders FOREIGN KEY (buyer_id) REFERENCES users (user_id),   -- 外键引用users表（买家）
+    CONSTRAINT seller_id_fk_orders FOREIGN KEY (seller_id) REFERENCES users (user_id), -- 外键引用users表（卖家）
+    CONSTRAINT item_id_fk_orders FOREIGN KEY (item_id) REFERENCES items (item_id)      -- 外键引用items表
+);
+
+-- 创建`items`表，用于定义商品信息
+CREATE TABLE items
+(
+    item_id     INT PRIMARY KEY AUTO_INCREMENT COMMENT '商品ID(主键)',
+    user_id     INT                                   NOT NULL COMMENT '发布商品的用户ID（外键引用 users）',
+    item_name   VARCHAR(255)                          NOT NULL COMMENT '商品名称',
+    description VARCHAR(500)                          NULL COMMENT '商品描述',
+    category_id INT                                   NOT NULL COMMENT '商品类别ID（外键引用 categories 表）',
+    price       DECIMAL(10, 2) CHECK (price >= 0)     NOT NULL COMMENT '商品价格',
+    status      ENUM ('available', 'sold', 'removed') NOT NULL DEFAULT 'available'
+        COMMENT '商品状态：available（可售）、sold（已售出）、removed（已下架）',
+    created_at  TIMESTAMP                             NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '商品创建时间',
+    updated_at  TIMESTAMP                             NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '商品更新时间',
+
+    -- 外键约束
+    CONSTRAINT user_id_fk_items FOREIGN KEY (user_id) REFERENCES users (user_id),                      -- 外键引用users表
+    CONSTRAINT category_id_fk_items FOREIGN KEY (category_id) REFERENCES item_categories (category_id) -- 外键引用item_categories表
+);
+
+-- 创建`categories`表，用于定义商品类别
+CREATE TABLE item_categories
+(
+    category_id   INT PRIMARY KEY AUTO_INCREMENT COMMENT '类别ID',
+    category_name VARCHAR(50) NOT NULL COMMENT '类别名称'
+);
+
+-- 创建`item_images`表，用于存储商品的图片信息
+CREATE TABLE item_images
+(
+    image_id   INT PRIMARY KEY AUTO_INCREMENT COMMENT '图片ID(主键)',
+    item_id    INT          NOT NULL COMMENT '商品ID',
+    image_path VARCHAR(255) NULL COMMENT '图片路径',
+    created_at TIMESTAMP    NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '图片创建时间',
+    -- 外键约束
+    CONSTRAINT item_id_fk_image FOREIGN KEY (item_id) REFERENCES items (item_id) -- 外键引用items表
+);
+
+-- 创建`item_comments`表，用于存储商品的评论信息
+CREATE TABLE item_comments
+(
+    comment_id INT PRIMARY KEY AUTO_INCREMENT COMMENT '评论ID(主键)',
+    user_id    INT           NOT NULL COMMENT '评论用户ID',
+    item_id    INT           NOT NULL COMMENT '被评论的商品ID',
+    content    VARCHAR(1000) NOT NULL COMMENT '评论内容',
+    created_at TIMESTAMP     NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '评论创建时间',
+
+    -- 外键约束
+    CONSTRAINT user_id_fk_comment FOREIGN KEY (user_id) REFERENCES users (user_id), -- 外键引用users表
+    CONSTRAINT item_id_fk_comment FOREIGN KEY (item_id) REFERENCES items (item_id)  -- 外键引用items表
+);
+
+-- 创建`item_likes`表，用于存储商品的点赞信息
+CREATE TABLE item_likes
+(
+    like_id    INT PRIMARY KEY AUTO_INCREMENT COMMENT '点赞ID(主键)',
+    user_id    INT       NOT NULL COMMENT '点赞用户ID',
+    item_id    INT       NOT NULL COMMENT '被点赞的商品ID',
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '点赞创建时间',
+
+    -- 外键约束
+    CONSTRAINT user_id_fk_like FOREIGN KEY (user_id) REFERENCES users (user_id), -- 外键引用users表
+    CONSTRAINT item_id_fk_like FOREIGN KEY (item_id) REFERENCES items (item_id)  -- 外键引用items表
+);
+
+-- 创建`item_favorites`表，用于用户收藏的商品信息
+CREATE TABLE item_favorites
+(
+    favorite_id INT PRIMARY KEY AUTO_INCREMENT COMMENT '收藏ID(主键)',
+    user_id     INT       NOT NULL COMMENT '用户ID（外键引用 users）',
+    item_id     INT       NOT NULL COMMENT '商品ID（外键引用 items）',
+    created_at  TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '收藏时间',
+
+    -- 外键约束
+    CONSTRAINT user_id_fk_favorite FOREIGN KEY (user_id) REFERENCES users (user_id), -- 外键引用users表
+    CONSTRAINT item_id_fk_favorite FOREIGN KEY (item_id) REFERENCES items (item_id)  -- 外键引用items表
+);
+
+-- 创建`item_offers`表，用于存储物品下架的信息
+CREATE TABLE item_offers
+(
+    offer_id   INT PRIMARY KEY AUTO_INCREMENT COMMENT '物品下架ID（主键）',
+    user_id    INT          NOT NULL COMMENT '用户ID（外键引用 users）',
+    item_id    INT          NOT NULL COMMENT '商品ID（外键引用 items）',
+    reason     VARCHAR(500) NOT NULL COMMENT '下架理由',
+    created_at TIMESTAMP    NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '下架时间',
+
+    -- 外键约束
+    CONSTRAINT user_id_fk_offer FOREIGN KEY (user_id) REFERENCES users (user_id), -- 外键引用users表
+    CONSTRAINT item_id_fk_offer FOREIGN KEY (item_id) REFERENCES items (item_id)  -- 外键引用items表
+);
diff --git a/document/二手交易平台接口文档.md b/document/二手交易平台接口文档.md
new file mode 100644
index 0000000..ff22e2d
--- /dev/null
+++ b/document/二手交易平台接口文档.md
@@ -0,0 +1,1235 @@
+# 二手交易平台接口文档
+
+## 目录
+
+- [1、接口概述](#1接口概述)
+- [2、用户接口列表](#2用户接口列表)
+    - [2.1、用户注册](#21用户注册)
+        - [2.1.1基本信息](#211基本信息)
+        - [2.1.2请求参数](#212请求参数)
+        - [2.1.3响应数据](#213响应数据)
+
+    - [2.2、用户登录](#22用户登录)
+        - [2.2.1基本信息](#221基本信息)
+        - [2.2.2请求参数](#222请求参数)
+        - [2.2.3响应数据](#223响应数据)
+        - [2.2.4备注说明](#224备注说明)
+
+    - [2.3、获取用户基本信息](#23获取用户基本信息)
+        - [2.3.1基本信息](#231基本信息)
+        - [2.3.2请求参数](#232请求参数)
+        - [2.3.3响应数据](#233响应数据)
+
+    - [2.4、更新用户基本信息](#24更新用户基本信息)
+        - [2.4.1基本信息](#241基本信息)
+        - [2.4.2请求参数](#242请求参数)
+        - [2.4.3响应数据](#243响应数据)
+
+    - [2.5、更新用户头像](#25更新用户头像)
+        - [2.5.1基本信息](#251基本信息)
+        - [2.5.2请求参数](#252请求参数)
+        - [2.5.3响应数据](#253响应数据)
+
+    - [2.6、更新用户密码](#26更新用户密码)
+        - [2.6.1基本信息](#261基本信息)
+        - [2.6.2请求参数](#262请求参数)
+        - [2.6.3响应数据](#263响应数据)
+
+- [3、商品接口列表](#3商品接口列表)
+    - [3.1、添加商品](#31添加商品)
+        - [3.1.1基本信息](#311基本信息)
+        - [3.1.2请求参数](#312请求参数)
+        - [3.1.3响应数据](#313响应数据)
+
+    - [3.2、获取商品列表](#32获取商品列表)
+        - [3.2.1基本信息](#321基本信息)
+        - [3.2.2请求参数](#322请求参数)
+        - [3.2.3响应数据](#323响应数据)
+
+    - [3.3、获取商品详情](#33获取商品详情)
+        - [3.3.1基本信息](#331基本信息)
+        - [3.3.2请求参数](#332请求参数)
+        - [3.3.3响应数据](#333响应数据)
+
+    - [3.4、删除商品](#34删除商品)
+        - [3.4.1基本信息](#341基本信息)
+        - [3.4.2请求参数](#342请求参数)
+        - [3.4.3响应数据](#343响应数据)
+
+- [4、交易管理](#4交易管理)
+    - [4.1、创建订单](#41创建订单)
+        - [4.1.1基本信息](#411基本信息)
+        - [4.1.2请求参数](#412请求参数)
+        - [4.1.3响应数据](#413响应数据)
+
+    - [4.2、获取订单列表](#42获取订单列表)
+        - [4.2.1基本信息](#421基本信息)
+        - [4.2.2请求参数](#422请求参数)
+        - [4.2.3响应数据](#423响应数据)
+
+    - [4.3、获取订单详情](#34删除商品)
+        - [4.3.1基本信息](#431基本信息)
+        - [4.3.2请求参数](#432请求参数)
+        - [4.3.3响应数据](#433响应数据)
+
+    - [4.4、取消订单](#44取消订单)
+        - [4.4.1基本信息](#441基本信息)
+        - [4.4.2请求参数](#442请求参数)
+        - [4.4.3响应数据](#443响应数据)
+
+- [5、管理员管理](#5管理员管理)
+    - [5.1、管理员登录](#51管理员管理)
+        - [5.1.1基本信息](#511基本信息)
+        - [5.1.2请求参数](#512请求参数)
+        - [5.1.3响应数据](#513响应数据)
+    - [5.2、用户管理](#52管理员管理)
+        - [5.2.1基本信息](#521基本信息)
+        - [5.2.2请求参数](#522请求参数)
+        - [5.2.3响应数据](#523响应数据)
+    - [5.3、商品管理](#53商品管理)
+        - [5.3.1基本信息](#531基本信息)
+        - [5.3.2请求参数](#532请求参数)
+        - [5.3.3响应数据](#533响应数据)
+    - [5.4、订单管理](#54订单管理)
+        - [5.4.1基本信息](#541基本信息)
+        - [5.4.2请求参数](#542请求参数)
+        - [5.4.3响应数据](#543响应数据)        
+    - [5.5、退出模块](#55退出模块)
+        - [5.5.1基本信息](#551基本信息)
+        - [5.5.2请求参数](#552请求参数)
+        - [5.5.3响应数据](#553响应数据)
+- [6、其他接口](#6其他接口)
+    - [6.1、搜索商品](#61搜索商品)
+        - [6.1.1基本信息](#611基本信息)
+        - [6.1.2请求参数](#612请求参数)
+        - [6.1.3响应数据](#613响应数据)
+
+    - [6.2、用户反馈](#62用户反馈)
+        - [6.2.1基本信息](#621基本信息)
+        - [6.2.2请求参数](#622请求参数)
+        - [6.2.3响应数据](#623响应数据)
+
+## 1、接口概述
+
+该接口文档描述了二手交易平台的所有API接口，包括用户管理、商品管理、交易管理、管理员管理等功能。
+
+## 2、用户接口列表
+
+### 2.1、用户注册
+
+#### 2.1.1基本信息
+
+- 请求路径URL：`user/register`
+- 请求方式：`POST`
+- 接口描述：该接口用于注册新用户
+
+#### 2.1.2请求参数
+
+- 请求参数格式：`X-www-form-urlencoded`
+  `
+- 请求参数说明：
+
+| **参数名称**     | **说明** | **类型** | **是否必须** | **备注**    |
+|:-------------|:-------|:------:|:---------|:----------|
+| **username** | 用户名    | string | 是        | 5-16位非空字符 |
+| **password** | 密码     | string | 是        | 5-16位非空字符 |
+
+- 请求数据样例：
+
+```json
+username=sunhehe&password=123456
+```
+
+#### 2.1.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+
+| **名称**      | **类型** | **是否必须** | **备注**          |
+|:------------|:-------|:---------|:----------------|
+| **code**    | number | 必须       | 响应码，0 -成功，1 -失败 |
+| **message** | string | 非必须      | 提示信息            |
+| **data**    | string | 必须       | 返回的数据           | 
+
+- 响应数据样例：
+
+```json
+{
+  "code": 0,
+  "message": "操作成功",
+  "data": null
+}
+```
+
+### 2.2、用户登录
+
+#### 2.2.1基本信息
+
+- 请求路径URL：`user/login`
+- 请求方式：`POST`
+- 接口描述：该接口用于用户登录
+
+#### 2.2.2请求参数
+
+- 请求参数格式：`X-www-form-yrlencoded`
+- 请求参数说明：
+
+| **参数名称**     | **说明** | **类型** | **是否必须** | **备注**    |
+|:-------------|:-------|:-------|:---------|:----------|
+| **username** | 用户名    | string | 是        | 5-16位非空字符 |
+| **password** | 密码     | string | 是        | 5-16位非空字符 |
+
+- 请求数据样例：
+
+```json
+username=sunhehe&password=123456
+```
+
+#### 2.2.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+
+| **名称**      | **类型** | **是否必须** | **备注**          |
+|:------------|:-------|:---------|:----------------|
+| **code**    | number | 必须       | 响应码，0 -成功，1 -失败 |
+| **message** | string | 非必须      | 提示信息            |
+|  **data**   | string | 必须       | 返回的数据 jwt 令牌    | 
+
+- 响应数据样例：
+
+```json
+{
+  "code": 0,
+  "message": "操作成功",
+  "data": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VyIjp7ImlkIjoiMSIsInVzZXJuYW1lIjoi5byg5LiJIn0sImV4cCI6MTczMDY1MjY4NH0.U9DCkONPv_Nw29WHbpABQ2yRl4LVoQYPpkZ1_qKIR2U"
+}
+```
+
+#### 2.2.4备注说明
+
+> 用户登录成功后，系统会自动下发 JWT 令牌，然后在后续的每次请求中，浏览器都需要在请求头 header 中携带到服务端，请求头的名称为
+` Authorization ` ,值为登录时下发的 JWT 令牌。
+> \
+> 如果检测到用户未登录，则 http 响应状态码为 `401`
+
+### 2.3、获取用户基本信息
+
+#### 2.3.1基本信息
+
+- 请求路径URL：`user/userinfo`
+- 请求方式：`GET`
+- 接口描述：该接口用于获取当前已登陆用户的详细信息
+
+#### 2.3.2请求参数
+
+无
+
+#### 2.3.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+
+| **名称**       | **类型**    | **是否必须**    | **备注**          |
+|:-------------|:----------|:------------|:----------------|
+| **code**     | number    | 必须          | 响应码，0 -成功，1 -失败 |
+| **message**  | string    | 非必须         | 提示信息            | 
+| **data**     | string    | 必须          | 返回的数据           |
+| --id         | number    | 非必须         | 主键ID            |
+| --userna     | string    | 非必须         | 用户名             |
+| --nickname   | string    | 非必须         | 昵称              |
+| --email      | string    | 非必须         | 邮箱              |
+| --userPic    | string    | 非必须         | 头像地址            |
+| --createTime | string    | 非必须         | 创建时间            |
+| --updateTime | string    | 非必须         | 更新时间            |
+
+- 响应数据样例：
+
+```json
+{
+  "code": 0,
+  "message'": "操作成功",
+  "data": {
+    "id": 5,
+    "username": "sunhehe",
+    "nickname": "",
+    "emai1": "",
+    "userPic": "",
+    "createTime": "2024-11-0322:21:31",
+    "updateTime": "2024-11-0322:21:31"
+  }
+}
+```
+
+### 2.4、更新用户基本信息
+
+#### 2.4.1基本信息
+
+- 请求路径URL：`/user/update`
+- 请求方式：`PUT`
+- 接口描述：该接口用于更新已登录用户的基本信息（除头像和密码）
+
+#### 2.4.2请求参数
+
+- 请求参数格式：`application/json`
+- 请求参数说明：
+
+| **参数名称**     | **说明** | **类型** | **是否必须** |    **备注** |
+|:-------------|:-------|:-------|:---------|----------:|
+| **id**       | 主键ID   | number | 是        |           |
+| **username** | 用户名    | string | 否        | 5-16位非空字符 |
+| **nickname** | 昵称     | string | 是        | 1-10位非空字符 |
+| **email**    | 邮箱     | string | 是        |  满足邮箱格式要求 |
+
+- 请求数据样例：
+
+```json
+{
+  "id": 5,
+  "username": "sunhehe",
+  "nickname": "澜崽",
+  "email": "151037@qq.com"
+}
+```
+
+#### 2.4.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+
+| **名称**      | **类型** | **是否必须** | **备注**          |
+|:------------|:-------|:---------|:----------------|
+| **code**    | number | 必须       | 响应码，0 -成功，1 -失败 |
+| **message** | string | 非必须      | 提示信息            | 
+| **data**    | object | 非必须      | 返回的数据           | 
+
+- 响应数据样例：
+
+```json
+{
+  "code": 0,
+  "message'": "操作成功",
+  "data": null
+}
+```
+
+### 2.5、更新用户头像
+
+#### 2.5.1基本信息
+
+- 请求路径URL：`user/updateAvatar`
+- 请求方式：`PATCH`
+- 接口描述：该接口用于更新已登录用户的头像
+
+#### 2.5.2请求参数
+
+- 请求参数格式：`queryString`
+- 请求参数说明：
+
+| **参数名称**      | **说明** | **类型** | **是否必须** | **备注** |
+|:--------------|:-------|:-------|:---------|-------:|
+| **avatarUrl** | 头像地址   | string | 是        |  url地址 |
+
+- 请求数据样例：
+
+```js
+{
+    avatarur1 = https://haowallpaper.com/link/common/file/previewFileImg/15690537886650688
+}
+```
+
+#### 2.5.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+
+| **名称**      | **类型** | **是否必须** | **备注**          |
+|:------------|:-------|:---------|:----------------|
+| **code**    | number | 必须       | 响应码，0 -成功，1 -失败 |
+| **message** | string | 非必须      | 提示信息            | 
+|  **data**   | object | 非必须      | 返回的数据           | 
+
+- 响应数据样例：
+
+```json
+{
+  "code": 0,
+  "message'": "操作成功",
+  "data": null
+}
+```
+
+### 2.6、更新用户密码
+
+#### 2.6.1基本信息
+
+- 请求路径URL：`user/updatePwd`
+- 请求方式：`PATCH`
+- 接口描述：该接口用于更新已登录用户的密码
+
+#### 2.6.2请求参数
+
+- 请求参数格式：`application/json`
+- 请求参数说明：
+
+| **参数名称**    | **说明** | **类型** | **是否必须** | **备注** |
+|:------------|:-------|:-------|:---------|-------:|
+| **old_pwd** | 原密码    | string | 是        |        |
+| **new_pwd** | 新密码    | string | 是        |        |
+| **re_pwd**  | 确认新密码  | string | 是        |        |
+
+- 请求数据样例：
+
+```json
+{
+  "old_pwd": "123456",
+  "new_pwd": "234567",
+  "re_pwd": "234567"
+}
+```
+
+#### 2.6.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+
+| **名称**      | **类型** | **是否必须** | **备注**          |
+|:------------|:-------|:---------|:----------------|
+| **code**    | number | 必须       | 响应码，0 -成功，1 -失败 |
+| **message** | string | 非必须      | 提示信息            | 
+|  **data**   | object | 非必须      | 返回的数据           | 
+
+- 响应数据样例：
+
+```json
+{
+  "code": 0,
+  "message'": "操作成功",
+  "data": null
+}
+```
+
+## 3、商品接口列表
+
+### 3.1、添加商品
+
+#### 3.1.1基本信息
+
+- 请求路径URL：`product/add`
+- 请求方式：`POST`
+- 接口描述：该接口用于添加新商品
+
+#### 3.1.2请求参数
+
+- 请求参数格式：`application/json`
+- 请求参数说明：
+
+| **参数名称**        | **说明**   | **类型**  | **是否必须** |    **备注** |
+|:----------------|:---------|:--------|:---------|----------:|
+| **name**	       | 商品名称     | 	string | 	是	      |     商品的名称 |
+| **price**	      | 商品价格     | 	number | 	是	      |  商品的价格（￥） |
+| **description** | 	商品描述	   | string  | 	否       | 	对商品的详细描述 |
+| **category**    | 	商品类别	   | string  | 	是	      |    商品所属类别 |
+| **imageUrl**    | 	商品图片链接	 | string  | 	否	      |  商品图片的URL |
+
+- 请求数据样例：
+
+```json
+{
+  "name": "二手书籍",
+  "price": 50,
+  "description": "一本很好的二手书籍",
+  "category": "书籍",
+  "imageUrl": "https://img3m5.ddimg.cn/58/24/27883705-1_e_2.jpg"
+}
+```
+
+#### 3.1.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+
+| **名称**      | **类型** | **是否必须** | **备注**          |
+|:------------|:-------|:---------|:----------------|
+| **code**    | number | 必须       | 响应码，0 -成功，1 -失败 |
+| **message** | string | 非必须      | 提示信息            | 
+|  **data**   | object | 非必须      | 返回的数据           | 
+
+- 响应数据样例：
+
+```json
+{
+  "code": 0,
+  "message'": "操作成功",
+  "data": null
+}
+```
+
+### 3.2、获取商品列表
+
+#### 3.2.1基本信息
+
+- 请求路径URL：`product/list`
+- 请求方式：`GET`
+- 接口描述：该接口用于获取商品列表
+
+#### 3.2.2请求参数
+
+无
+
+#### 3.2.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+
+| **名称**        | **类型**   | **是否必须** | **备注**          |
+|:--------------|:---------|:---------|:----------------|
+| **code**      | number   | 必须       | 响应码，0 -成功，1 -失败 |
+| **message**   | string   | 非必须      | 提示信息            | 
+| **data**      | object   | 非必须      | 商品列表            | 
+| --id          | 	number  | 非必须		    | 商品ID            |
+| --name	       | string   | 	非必须	    | 商品的名称           |
+| --price	      | number   | 	非必须	    | 商品的价格（￥）        |
+| --description | 	string	 | 非必须      | 	商品描述           |
+| --category    | 	string	 | 非必须	     | 商品类别            |
+| --imageUrl    | 	string	 | 非必须	     | 商品图片            |
+
+- 响应数据样例：
+
+```json
+{
+  "code": 0,
+  "message'": "操作成功",
+  "data": [
+    {
+      "id": 1,
+      "name": "二手书籍",
+      "price": 50,
+      "description": "一本很好的二手书籍",
+      "category": "书籍",
+      "imageUrl": "http://example.com/image.jpg"
+    },
+    {
+      "id": 2,
+      "name": "二手台灯",
+      "price": 300,
+      "description": "状态良好的二手台灯",
+      "category": "杂物",
+      "imageUrl": "http://example.com/image2.jpg"
+    }
+  ]
+}
+```
+
+### 3.3、获取商品详情
+
+#### 3.3.1基本信息
+
+- 请求路径URL：`product/detail/{id}`
+- 请求方式：`GET`
+- 接口描述：该接口用于获取指定商品的详细信息
+
+#### 3.3.2请求参数
+
+- 请求参数格式：`application/json`
+- 请求参数说明：
+
+| **参数名称** | **说明** | **类型**  | **是否必须** |     **备注** |
+|:---------|:-------|:--------|:---------|-----------:|
+| **id**   | 	商品ID  | number	 | 必须	      | 要获取详情的商品ID |
+
+- 请求数据样例：
+
+```json
+{
+  "id": 1
+}
+```
+
+#### 3.3.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+
+| **名称**      | **类型** | **是否必须** | **备注**          |
+|:------------|:-------|:---------|:----------------|
+| **code**    | number | 必须       | 响应码，0 -成功，1 -失败 |
+| **message** | string | 非必须      | 提示信息            | 
+|  **data**   | object | 非必须      | 商品详细信息          | 
+
+- 响应数据样例：
+
+```json
+{
+  "code": 0,
+  "message'": "操作成功",
+  "data": {
+    "id": 1,
+    "name": "二手书籍",
+    "price": 50,
+    "description": "一本很好的二手书籍",
+    "category": "书籍",
+    "imageUrl": "http://example.com/image.jpg"
+  }
+}
+```
+
+### 3.4、删除商品
+
+#### 3.4.1基本信息
+
+- 请求路径URL：`product/delete/{id}`
+- 请求方式：`DELETE`
+- 接口描述：该接口用于删除指定商品
+
+#### 3.4.2请求参数
+
+- 请求参数格式：`application/json`
+- 请求参数说明：
+
+| **参数名称** | **说明** | **类型**  | **是否必须** |   **备注** |
+|:---------|:-------|:--------|:---------|---------:|
+| **id**   | 	商品ID  | number	 | 是	       | 要删除的商品ID |
+
+- 请求数据样例：
+
+```json
+{
+  "id": 2
+}
+```
+
+#### 3.4.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+
+| **名称**      | **类型** | **是否必须** | **备注**          |
+|:------------|:-------|:---------|:----------------|
+| **code**    | number | 必须       | 响应码，0 -成功，1 -失败 |
+| **message** | string | 非必须      | 提示信息            | 
+|  **data**   | object | 非必须      | 返回的数据           | 
+
+- 响应数据样例：
+
+```json
+{
+  "code": 0,
+  "message'": "操作成功",
+  "data": null
+}
+```
+
+## 4、交易管理
+
+### 4.1、创建订单
+
+#### 4.1.1基本信息
+
+- 请求路径URL：`order/create`
+- 请求方式：`POST`
+- 接口描述：该接口用于创建新订单
+
+#### 4.1.2请求参数
+
+- 请求参数格式：`application/json`
+- 请求参数说明：
+
+| **参数名称** | **说明** | **类型** | **是否必须** | **备注** |
+|:---------|:-------|:-------|:---------|-------:|
+
+- 请求数据样例：
+
+```json
+{
+}
+```
+
+#### 4.1.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+
+| **名称**      | **类型** | **是否必须** | **备注**          |
+|:------------|:-------|:---------|:----------------|
+| **code**    | number | 必须       | 响应码，0 -成功，1 -失败 |
+| **message** | string | 非必须      | 提示信息            | 
+|  **data**   | object | 非必须      | 返回的数据           | 
+
+- 响应数据样例：
+
+```json
+{
+  "code": 0,
+  "message'": "操作成功",
+  "data": null
+}
+```
+
+### 4.2、获取订单列表
+
+#### 4.2.1基本信息
+
+- 请求路径URL：`order/list`
+- 请求方式：`GET`
+- 接口描述：该接口用于获取用户的订单列表
+
+#### 4.2.2请求参数
+无
+
+#### 4.2.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+
+| **名称**      | **类型** | **是否必须** | **备注**          |
+|:------------|:-------|:---------|:----------------|
+| **code**    | number | 必须       | 响应码，0 -成功，1 -失败 |
+| **message** | string | 非必须      | 提示信息            | 
+|  **data**   | object | 非必须      | 返回的数据           | 
+
+- 响应数据样例：
+
+```json
+{
+  "code": 0,
+  "message'": "操作成功",
+  "data": null
+}
+```
+
+### 4.3、获取订单详情
+
+#### 4.3.1基本信息
+
+- 请求路径URL：`order/detail/{id}`
+- 请求方式：`GET`
+- 接口描述：该接口用于获取指定订单的详细信息
+
+#### 4.3.2请求参数
+
+- 请求参数格式：`application/json`
+- 请求参数说明：
+无
+- 请求数据样例：
+无
+
+#### 4.3.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+
+| **名称**      | **类型** | **是否必须** | **备注**          |
+|:------------|:-------|:---------|:----------------|
+| **code**    | number | 必须       | 响应码，0 -成功，1 -失败 |
+| **message** | string | 非必须      | 提示信息            | 
+|  **data**   | object | 非必须      | 返回的数据           | 
+
+- 响应数据样例：
+
+```json
+{
+  "code": 0,
+  "message'": "操作成功",
+  "data": null
+}
+```
+
+### 4.4、取消订单
+
+#### 4.4.1基本信息
+
+- 请求路径URL：`/order/cancel/{id}`
+- 请求方式：`DELETE`
+- 接口描述：该接口用于取消指定订单。通过订单ID（`id`）来唯一标识待取消的订单。如果订单状态允许取消（例如未支付或待发货），则可以成功取消订单。
+
+#### 4.4.2请求参数
+
+- 请求参数格式：`application/json`
+- 请求参数说明：
+
+| **参数名称** | **说明**         | **类型**   | **是否必须** | **备注**       |
+|:------------|:------------|:--------|:-----------:|:------------|
+| **id**      | 订单ID             | number   | 是          | 订单的唯一标识符，用于指定需要取消的订单。 |
+  
+> 注：`id`是URL路径的一部分，不是请求体中的参数。
+
+- 请求数据样例：
+无
+
+#### 4.4.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+  
+| **名称**      | **类型**   | **是否必须** | **备注**                      |
+|:-------------|:---------|:-----------:|:----------------------------|
+| **code**     | number   | 必须        | 响应码，0 - 成功，1 - 失败    |
+| **message**  | string   | 必须        | 提示信息                      |
+| **data**     | object   | 非必须      | 返回的数据，通常为空         |
+
+- 响应数据样例：
+```json
+//取消订单成功
+{
+  "code": 0,
+  "message": "订单取消成功",
+  "data": null
+}
+```
+
+```json
+// 取消订单失败（例如订单已发货或已完成）
+{
+  "code": 1,
+  "message": "订单无法取消，订单已发货",
+  "data": null
+}
+```
+
+## 5、管理员管理
+
+### 5.1、管理员登录
+
+#### 5.1.1基本信息
+
+- 请求路径URL：`/admin/login`
+- 请求方式：`POST`
+- 接口描述：管理员登录接口，用于验证管理员身份并返回登录信息。
+
+#### 5.1.2请求参数
+
+- 请求参数格式：`application/x-www-form-urlencoded`
+- 请求参数说明：
+
+| **参数名称** | **说明**   | **类型** | **是否必须** | **备注**          |
+|:-------------|:----------|:--------:|:-----------:|:------------------|
+| **username** | 用户名    | string   | 是          | 管理员的用户名，5-16位 |
+| **password** | 密码      | string   | 是          | 管理员的密码，5-16位 |
+
+- 请求数据样例：
+```json
+username=sunhehe&password=123456
+```
+
+#### 5.1.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+
+| **名称**      | **类型** | **是否必须** | **备注**                      |
+|:-------------|:--------|:-----------:|:------------------------------|
+| **code**     | number  | 必须        | 响应码，0 - 成功，1 - 失败     |
+| **message**  | string  | 非必须      | 提示信息，登录成功或失败的描述 |
+| **data**     | object  | 非必须      | 包含管理员的登录令牌等信息     |
+
+- 响应数据样例：
+```json
+{
+  "code": 0,
+  "message": "登录成功",
+  "data": {
+    "token": "abcd1234xyz",
+    "adminId": "admin_001",
+    "role": "super_admin"
+  }
+}
+```
+
+### 5.2、用户管理
+
+#### 5.2.1基本信息
+
+- 请求路径URL：`/admin/user/list`
+- 请求方式：`GET`
+- 接口描述：管理员查看用户列表。
+
+#### 5.2.2请求参数
+
+- 请求参数格式：`application/x-www-form-urlencoded`
+- 请求参数说明：
+
+| **参数名称** | **说明**   | **类型** | **是否必须** | **备注**       |
+|:-------------|:----------|:--------:|:-----------:|:-------------|
+| **page**     | 页码      | number   | 否          | 默认为1，分页 |
+| **size**     | 每页数量  | number   | 否          | 默认为10，分页 |
+
+- 请求数据样例：
+
+#### 5.2.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+
+| **名称**      | **类型**   | **是否必须** | **备注**              |
+|:-------------|:----------|:-----------:|:----------------------|
+| **code**     | number    | 必须        | 响应码，0 - 成功，1 - 失败 |
+| **message**  | string    | 非必须      | 提示信息              |
+| **data**     | object[]  | 必须        | 用户列表数据          |
+| **data[]**   | object    | 必须        | 每个用户的详细信息    |
+| **data[].id**| string    | 必须        | 用户ID                |
+| **data[].username** | string    | 必须        | 用户名                |
+| **data[].email** | string    | 非必须      | 用户邮箱              |
+| **data[].status** | string    | 非必须      | 用户状态 (active/inactive) |
+
+- 响应数据样例：
+```json
+{
+  "code": 0,
+  "message": "操作成功",
+  "data": [
+    {
+      "id": "user_001",
+      "username": "john_doe",
+      "email": "john.doe@example.com",
+      "status": "active"
+    },
+    {
+      "id": "user_002",
+      "username": "jane_smith",
+      "email": "jane.smith@example.com",
+      "status": "inactive"
+    }
+  ]
+}
+```
+
+
+### 5.3、商品管理
+
+#### 5.3.1基本信息
+
+- 请求路径URL：`/admin/product/list`
+- 请求方式：`GET`
+- 接口描述：管理员查看所有商品信息。
+
+#### 5.3.2请求参数
+
+- 请求参数格式：`application/x-www-form-urlencoded`
+- 请求参数说明：
+
+| **参数名称** | **说明**   | **类型** | **是否必须** | **备注**        |
+|:-------------|:----------|:--------:|:-----------:|:--------------|
+| **page**     | 页码      | number   | 否          | 默认为1，分页  |
+| **size**     | 每页数量  | number   | 否          | 默认为10，分页 |
+- 请求数据样例：
+
+#### 5.3.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+
+| **名称**      | **类型**   | **是否必须** | **备注**              |
+|:-------------|:----------|:-----------:|:----------------------|
+| **code**     | number    | 必须        | 响应码，0 - 成功，1 - 失败 |
+| **message**  | string    | 非必须      | 提示信息              |
+| **data**     | object[]  | 必须        | 商品列表数据          |
+| **data[]**   | object    | 必须        | 每个商品的详细信息    |
+| **data[].id**| string    | 必须        | 商品ID                |
+| **data[].name** | string  | 必须        | 商品名称              |
+| **data[].price** | number  | 必须        | 商品价格              |
+| **data[].quantity** | number  | 必须        | 商品库存数量          |
+
+- 响应数据样例：
+```json
+{
+  "code": 0,
+  "message": "操作成功",
+  "data": [
+    {
+      "id": "prod_001",
+      "name": "二手笔记本电脑",
+      "price": 2999.99,
+      "quantity": 10
+    },
+    {
+      "id": "prod_002",
+      "name": "二手手机",
+      "price": 1599.99,
+      "quantity": 25
+    }
+  ]
+}
+```
+
+### 5.4、订单管理
+
+#### 5.4.1基本信息
+
+- 请求路径URL：`/admin/order/list`
+- 请求方式：`GET`
+- 接口描述：管理员查看所有订单信息。
+
+#### 5.4.2请求参数
+
+- 请求参数格式：`application/x-www-form-urlencoded`
+- 请求参数说明：
+
+| **参数名称** | **说明**   | **类型** | **是否必须** | **备注**        |
+|:-------------|:----------|:--------:|:-----------:|:--------------|
+| **page**     | 页码      | number   | 否          | 默认为1，分页  |
+| **size**     | 每页数量  | number   | 否          | 默认为10，分页 |
+
+- 请求数据样例：
+
+#### 5.4.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+
+| **名称**      | **类型**   | **是否必须** | **备注**              |
+|:-------------|:----------|:-----------:|:----------------------|
+| **code**     | number    | 必须        | 响应码，0 - 成功，1 - 失败 |
+| **message**  | string    | 非必须      | 提示信息              |
+| **data**     | object[]  | 必须        | 订单列表数据          |
+| **data[]**   | object    | 必须        | 每个订单的详细信息    |
+| **data[].orderId** | string  | 必须        | 订单ID               |
+| **data[].userId**  | string  | 必须        | 用户ID               |
+| **data[].productId** | string | 必须        | 商品ID               |
+| **data[].quantity** | number  | 必须        | 商品数量             |
+| **data[].status**   | string  | 必须        | 订单状态 (pending/paid/shipped) |
+
+- 响应数据样例：
+```json
+{
+  "code": 0,
+  "message": "操作成功",
+  "data": [
+    {
+      "orderId": "order_001",
+      "userId": "user_001",
+      "productId": "prod_001",
+      "quantity": 1,
+      "status": "paid"
+    },
+    {
+      "orderId": "order_002",
+      "userId": "user_002",
+      "productId": "prod_002",
+      "quantity": 2,
+      "status": "shipped"
+    }
+  ]
+}
+```
+
+### 5.5、退出模块
+
+#### 5.5.1基本信息
+
+- 请求路径URL：`/admin/logout`
+- 请求方式：`POST`
+- 接口描述：管理员退出登录接口，用于清除
+
+#### 5.5.2请求参数
+
+- 请求参数格式：`application/json`
+- 请求参数说明：
+
+| **参数名称** | **说明**   | **类型** | **是否必须** | **备注**        |
+|:-------------|:----------|:--------:|:-----------:|:--------------|
+| **token**    | 登录令牌  | string   | 是          | 管理员登录时获取的token，用于身份验证 |
+
+- 请求数据样例：
+无
+
+#### 5.5.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+
+| **名称**      | **类型**  | **是否必须** | **备注**                      |
+|:-------------|:---------|:-----------:|:------------------------------|
+| **code**     | number   | 必须        | 响应码，0 - 成功，1 - 失败     |
+| **message**  | string   | 非必须      | 提示信息                      |
+
+- 响应数据样例：
+```json
+{
+  "code": 0,
+  "message": "退出登录成功"
+}
+```
+
+## 6、其他接口
+
+### 6.1、搜索商品
+
+#### 6.1.1基本信息
+
+- 请求路径URL：`/product/search`
+- 请求方式：`GET`
+- 接口描述：该接口用于根据关键词搜索商品。可以根据商品名称、分类、描述等信息进行模糊查询。
+
+#### 6.1.2请求参数
+
+- 请求参数格式：`application/json`
+- 请求参数说明：
+
+| **参数名称**   | **说明**                  | **类型**   | **是否必须** | **备注**                                   |
+|:--------------|:-------------------------|:---------|:-----------:|:-----------------------------------------|
+| **keyword**   | 搜索关键词（商品名称、描述等）  | string   | 是          | 用于搜索商品的关键词，支持模糊查询。                |
+| **category**  | 商品分类                    | string   | 否          | 可选，指定商品类别进行筛选，若不提供则不筛选类别。     |
+| **page**      | 页码（分页查询）             | number   | 否          | 默认值为1，表示第一页。                          |
+| **pageSize**  | 每页显示的商品数量             | number   | 否          | 默认值为20，最大值为100，表示每页显示的商品数。        |
+
+- 请求数据样例：
+```json
+{
+  "keyword": "手机",
+  "category": "电子产品",
+  "page": 1,
+  "pageSize": 20
+}
+```
+
+#### 6.1.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+
+| **名称**      | **类型**   | **是否必须** | **备注**                      |
+|:-------------|:---------|:-----------:|:----------------------------|
+| **code**     | number   | 必须        | 响应码，0 - 成功，1 - 失败    |
+| **message**  | string   | 非必须      | 提示信息                      |
+| **data**     | object   | 必须        | 返回的数据，包含商品列表信息  |
+| **total**    | number   | 必须        | 符合条件的商品总数             |
+| **page**     | number   | 必须        | 当前页码                      |
+| **pageSize** | number   | 必须        | 每页商品数                    |
+
+- 响应数据样例：
+```json
+{
+  "code": 0,
+  "message": "操作成功",
+  "data": [
+    {
+      "productId": 12345,
+      "name": "二手iPhone 12",
+      "category": "电子产品",
+      "price": 3000,
+      "description": "几乎全新，屏幕完好，原装配件",
+      "imageUrl": "http://example.com/iphone12.jpg",
+      "sellerId": 67890,
+      "sellerName": "张三"
+    },
+    {
+      "productId": 67890,
+      "name": "二手MacBook Pro",
+      "category": "电子产品",
+      "price": 4500,
+      "description": "配置高，性能稳定，电池寿命长",
+      "imageUrl": "http://example.com/macbookpro.jpg",
+      "sellerId": 12345,
+      "sellerName": "李四"
+    }
+  ],
+  "total": 50,
+  "page": 1,
+  "pageSize": 20
+}
+```
+
+### 6.2、用户反馈
+
+#### 6.2.1基本信息
+
+- 请求路径URL：`/feedback/submit`
+- 请求方式：`POST`
+- 接口描述：该接口用于提交用户反馈，用户可以通过此接口提交对平台的建议、问题或其他反馈。
+
+#### 6.2.2请求参数
+
+- 请求参数格式：`application/json`
+- 请求参数说明：
+| **参数名称**   | **说明**                     | **类型**   | **是否必须** | **备注**                                |
+|:--------------|:----------------------------|:---------|:-----------:|:--------------------------------------|
+| **userId**    | 用户ID                        | number   | 是          | 提交反馈的用户的ID，用于标识反馈来源。              |
+| **content**   | 反馈内容                      | string   | 是          | 用户提交的反馈内容，字数限制为500个字符。            |
+| **contactInfo**| 联系方式（可选）               | string   | 否          | 可选，用户希望被平台联系的方式（如电话、邮箱等）。     |
+
+- 请求数据样例：
+
+```json
+{
+  "userId": 12345,
+  "content": "平台的商品搜索功能有些慢，希望能够优化。",
+  "contactInfo": "example@example.com"
+}
+```
+
+#### 6.2.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+
+| **名称**      | **类型**   | **是否必须** | **备注**                      |
+|:-------------|:---------|:-----------:|:----------------------------|
+| **code**     | number   | 必须        | 响应码，0 - 成功，1 - 失败    |
+| **message**  | string   | 非必须      | 提示信息                      |
+| **data**     | object   | 非必须      | 返回的数据，通常为空          |
+
+- 响应数据样例：
+```json
+{
+  "code": 0,
+  "message": "反馈提交成功",
+  "data": null
+}
+```
+
+### 6.3、获取商品详情
+
+#### 6.3.1基本信息
+
+- 请求路径URL：`/product/{productId}`
+- 请求方式：`GET`
+- 接口描述：该接口用于获取某个商品的详细信息。
+
+#### 6.3.2请求参数
+
+- 请求参数格式：`application/json`
+- 请求参数说明：
+
+| **参数名称** | **说明**           | **类型** | **是否必须** | **备注**       |
+|:------------|:------------------|:--------|:-----------:|:-------------|
+| **productId** | 商品ID             | number  | 是          | 商品的唯一标识符 |
+
+- 请求数据样例
+```json
+{
+  "productId": 12345
+}
+```
+
+#### 6.3.3响应数据
+
+- 响应数据类型：`application/json`
+- 响应参数说明：
+
+| **名称**      | **类型**   | **是否必须** | **备注**                      |
+|:-------------|:---------|:-----------:|:----------------------------|
+| **code**     | number   | 必须        | 响应码，0 - 成功，1 - 失败    |
+| **message**  | string   | 非必须      | 提示信息                      |
+| **data**     | object   | 必须        | 返回商品的详细信息             |
+
+- 响应数据样例：
+```json
+{
+  "code": 0,
+  "message": "操作成功",
+  "data": {
+    "productId": 12345,
+    "name": "二手iPhone 12",
+    "category": "电子产品",
+    "price": 3000,
+    "description": "几乎全新，屏幕完好，原装配件",
+    "imageUrl": "http://example.com/iphone12.jpg",
+    "sellerId": 67890,
+    "sellerName": "张三",
+    "contactInfo": "example@example.com",
+    "location": "北京市",
+    "createTime": "2024-11-01T12:00:00"
+  }
+}
+```
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diff --git a/trading_platform/.gitattributes b/trading_platform/.gitattributes
new file mode 100644
index 0000000..3b41682
--- /dev/null
+++ b/trading_platform/.gitattributes
@@ -0,0 +1,2 @@
+/mvnw text eol=lf
+*.cmd text eol=crlf
diff --git a/trading_platform/.gitignore b/trading_platform/.gitignore
new file mode 100644
index 0000000..3f1f3e8
--- /dev/null
+++ b/trading_platform/.gitignore
@@ -0,0 +1,34 @@
+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+.idea/
diff --git a/trading_platform/.mvn/wrapper/maven-wrapper.properties b/trading_platform/.mvn/wrapper/maven-wrapper.properties
new file mode 100644
index 0000000..d58dfb7
--- /dev/null
+++ b/trading_platform/.mvn/wrapper/maven-wrapper.properties
@@ -0,0 +1,19 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+wrapperVersion=3.3.2
+distributionType=only-script
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip
diff --git a/trading_platform/mvnw b/trading_platform/mvnw
new file mode 100644
index 0000000..19529dd
--- /dev/null
+++ b/trading_platform/mvnw
@@ -0,0 +1,259 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Apache Maven Wrapper startup batch script, version 3.3.2
+#
+# Optional ENV vars
+# -----------------
+#   JAVA_HOME - location of a JDK home dir, required when download maven via java source
+#   MVNW_REPOURL - repo url base for downloading maven distribution
+#   MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+#   MVNW_VERBOSE - true: enable verbose log; debug: trace the mvnw script; others: silence the output
+# ----------------------------------------------------------------------------
+
+set -euf
+[ "${MVNW_VERBOSE-}" != debug ] || set -x
+
+# OS specific support.
+native_path() { printf %s\\n "$1"; }
+case "$(uname)" in
+CYGWIN* | MINGW*)
+  [ -z "${JAVA_HOME-}" ] || JAVA_HOME="$(cygpath --unix "$JAVA_HOME")"
+  native_path() { cygpath --path --windows "$1"; }
+  ;;
+esac
+
+# set JAVACMD and JAVACCMD
+set_java_home() {
+  # For Cygwin and MinGW, ensure paths are in Unix format before anything is touched
+  if [ -n "${JAVA_HOME-}" ]; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ]; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+      JAVACCMD="$JAVA_HOME/jre/sh/javac"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+      JAVACCMD="$JAVA_HOME/bin/javac"
+
+      if [ ! -x "$JAVACMD" ] || [ ! -x "$JAVACCMD" ]; then
+        echo "The JAVA_HOME environment variable is not defined correctly, so mvnw cannot run." >&2
+        echo "JAVA_HOME is set to \"$JAVA_HOME\", but \"\$JAVA_HOME/bin/java\" or \"\$JAVA_HOME/bin/javac\" does not exist." >&2
+        return 1
+      fi
+    fi
+  else
+    JAVACMD="$(
+      'set' +e
+      'unset' -f command 2>/dev/null
+      'command' -v java
+    )" || :
+    JAVACCMD="$(
+      'set' +e
+      'unset' -f command 2>/dev/null
+      'command' -v javac
+    )" || :
+
+    if [ ! -x "${JAVACMD-}" ] || [ ! -x "${JAVACCMD-}" ]; then
+      echo "The java/javac command does not exist in PATH nor is JAVA_HOME set, so mvnw cannot run." >&2
+      return 1
+    fi
+  fi
+}
+
+# hash string like Java String::hashCode
+hash_string() {
+  str="${1:-}" h=0
+  while [ -n "$str" ]; do
+    char="${str%"${str#?}"}"
+    h=$(((h * 31 + $(LC_CTYPE=C printf %d "'$char")) % 4294967296))
+    str="${str#?}"
+  done
+  printf %x\\n $h
+}
+
+verbose() { :; }
+[ "${MVNW_VERBOSE-}" != true ] || verbose() { printf %s\\n "${1-}"; }
+
+die() {
+  printf %s\\n "$1" >&2
+  exit 1
+}
+
+trim() {
+  # MWRAPPER-139:
+  #   Trims trailing and leading whitespace, carriage returns, tabs, and linefeeds.
+  #   Needed for removing poorly interpreted newline sequences when running in more
+  #   exotic environments such as mingw bash on Windows.
+  printf "%s" "${1}" | tr -d '[:space:]'
+}
+
+# parse distributionUrl and optional distributionSha256Sum, requires .mvn/wrapper/maven-wrapper.properties
+while IFS="=" read -r key value; do
+  case "${key-}" in
+  distributionUrl) distributionUrl=$(trim "${value-}") ;;
+  distributionSha256Sum) distributionSha256Sum=$(trim "${value-}") ;;
+  esac
+done <"${0%/*}/.mvn/wrapper/maven-wrapper.properties"
+[ -n "${distributionUrl-}" ] || die "cannot read distributionUrl property in ${0%/*}/.mvn/wrapper/maven-wrapper.properties"
+
+case "${distributionUrl##*/}" in
+maven-mvnd-*bin.*)
+  MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/
+  case "${PROCESSOR_ARCHITECTURE-}${PROCESSOR_ARCHITEW6432-}:$(uname -a)" in
+  *AMD64:CYGWIN* | *AMD64:MINGW*) distributionPlatform=windows-amd64 ;;
+  :Darwin*x86_64) distributionPlatform=darwin-amd64 ;;
+  :Darwin*arm64) distributionPlatform=darwin-aarch64 ;;
+  :Linux*x86_64*) distributionPlatform=linux-amd64 ;;
+  *)
+    echo "Cannot detect native platform for mvnd on $(uname)-$(uname -m), use pure java version" >&2
+    distributionPlatform=linux-amd64
+    ;;
+  esac
+  distributionUrl="${distributionUrl%-bin.*}-$distributionPlatform.zip"
+  ;;
+maven-mvnd-*) MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ ;;
+*) MVN_CMD="mvn${0##*/mvnw}" _MVNW_REPO_PATTERN=/org/apache/maven/ ;;
+esac
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-<version>,maven-mvnd-<version>-<platform>}/<hash>
+[ -z "${MVNW_REPOURL-}" ] || distributionUrl="$MVNW_REPOURL$_MVNW_REPO_PATTERN${distributionUrl#*"$_MVNW_REPO_PATTERN"}"
+distributionUrlName="${distributionUrl##*/}"
+distributionUrlNameMain="${distributionUrlName%.*}"
+distributionUrlNameMain="${distributionUrlNameMain%-bin}"
+MAVEN_USER_HOME="${MAVEN_USER_HOME:-${HOME}/.m2}"
+MAVEN_HOME="${MAVEN_USER_HOME}/wrapper/dists/${distributionUrlNameMain-}/$(hash_string "$distributionUrl")"
+
+exec_maven() {
+  unset MVNW_VERBOSE MVNW_USERNAME MVNW_PASSWORD MVNW_REPOURL || :
+  exec "$MAVEN_HOME/bin/$MVN_CMD" "$@" || die "cannot exec $MAVEN_HOME/bin/$MVN_CMD"
+}
+
+if [ -d "$MAVEN_HOME" ]; then
+  verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+  exec_maven "$@"
+fi
+
+case "${distributionUrl-}" in
+*?-bin.zip | *?maven-mvnd-?*-?*.zip) ;;
+*) die "distributionUrl is not valid, must match *-bin.zip or maven-mvnd-*.zip, but found '${distributionUrl-}'" ;;
+esac
+
+# prepare tmp dir
+if TMP_DOWNLOAD_DIR="$(mktemp -d)" && [ -d "$TMP_DOWNLOAD_DIR" ]; then
+  clean() { rm -rf -- "$TMP_DOWNLOAD_DIR"; }
+  trap clean HUP INT TERM EXIT
+else
+  die "cannot create temp dir"
+fi
+
+mkdir -p -- "${MAVEN_HOME%/*}"
+
+# Download and Install Apache Maven
+verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+verbose "Downloading from: $distributionUrl"
+verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+# select .zip or .tar.gz
+if ! command -v unzip >/dev/null; then
+  distributionUrl="${distributionUrl%.zip}.tar.gz"
+  distributionUrlName="${distributionUrl##*/}"
+fi
+
+# verbose opt
+__MVNW_QUIET_WGET=--quiet __MVNW_QUIET_CURL=--silent __MVNW_QUIET_UNZIP=-q __MVNW_QUIET_TAR=''
+[ "${MVNW_VERBOSE-}" != true ] || __MVNW_QUIET_WGET='' __MVNW_QUIET_CURL='' __MVNW_QUIET_UNZIP='' __MVNW_QUIET_TAR=v
+
+# normalize http auth
+case "${MVNW_PASSWORD:+has-password}" in
+'') MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+has-password) [ -n "${MVNW_USERNAME-}" ] || MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+esac
+
+if [ -z "${MVNW_USERNAME-}" ] && command -v wget >/dev/null; then
+  verbose "Found wget ... using wget"
+  wget ${__MVNW_QUIET_WGET:+"$__MVNW_QUIET_WGET"} "$distributionUrl" -O "$TMP_DOWNLOAD_DIR/$distributionUrlName" || die "wget: Failed to fetch $distributionUrl"
+elif [ -z "${MVNW_USERNAME-}" ] && command -v curl >/dev/null; then
+  verbose "Found curl ... using curl"
+  curl ${__MVNW_QUIET_CURL:+"$__MVNW_QUIET_CURL"} -f -L -o "$TMP_DOWNLOAD_DIR/$distributionUrlName" "$distributionUrl" || die "curl: Failed to fetch $distributionUrl"
+elif set_java_home; then
+  verbose "Falling back to use Java to download"
+  javaSource="$TMP_DOWNLOAD_DIR/Downloader.java"
+  targetZip="$TMP_DOWNLOAD_DIR/$distributionUrlName"
+  cat >"$javaSource" <<-END
+	public class Downloader extends java.net.Authenticator
+	{
+	  protected java.net.PasswordAuthentication getPasswordAuthentication()
+	  {
+	    return new java.net.PasswordAuthentication( System.getenv( "MVNW_USERNAME" ), System.getenv( "MVNW_PASSWORD" ).toCharArray() );
+	  }
+	  public static void main( String[] args ) throws Exception
+	  {
+	    setDefault( new Downloader() );
+	    java.nio.file.Files.copy( java.net.URI.create( args[0] ).toURL().openStream(), java.nio.file.Paths.get( args[1] ).toAbsolutePath().normalize() );
+	  }
+	}
+	END
+  # For Cygwin/MinGW, switch paths to Windows format before running javac and java
+  verbose " - Compiling Downloader.java ..."
+  "$(native_path "$JAVACCMD")" "$(native_path "$javaSource")" || die "Failed to compile Downloader.java"
+  verbose " - Running Downloader.java ..."
+  "$(native_path "$JAVACMD")" -cp "$(native_path "$TMP_DOWNLOAD_DIR")" Downloader "$distributionUrl" "$(native_path "$targetZip")"
+fi
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+if [ -n "${distributionSha256Sum-}" ]; then
+  distributionSha256Result=false
+  if [ "$MVN_CMD" = mvnd.sh ]; then
+    echo "Checksum validation is not supported for maven-mvnd." >&2
+    echo "Please disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+    exit 1
+  elif command -v sha256sum >/dev/null; then
+    if echo "$distributionSha256Sum  $TMP_DOWNLOAD_DIR/$distributionUrlName" | sha256sum -c >/dev/null 2>&1; then
+      distributionSha256Result=true
+    fi
+  elif command -v shasum >/dev/null; then
+    if echo "$distributionSha256Sum  $TMP_DOWNLOAD_DIR/$distributionUrlName" | shasum -a 256 -c >/dev/null 2>&1; then
+      distributionSha256Result=true
+    fi
+  else
+    echo "Checksum validation was requested but neither 'sha256sum' or 'shasum' are available." >&2
+    echo "Please install either command, or disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+    exit 1
+  fi
+  if [ $distributionSha256Result = false ]; then
+    echo "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised." >&2
+    echo "If you updated your Maven version, you need to update the specified distributionSha256Sum property." >&2
+    exit 1
+  fi
+fi
+
+# unzip and move
+if command -v unzip >/dev/null; then
+  unzip ${__MVNW_QUIET_UNZIP:+"$__MVNW_QUIET_UNZIP"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -d "$TMP_DOWNLOAD_DIR" || die "failed to unzip"
+else
+  tar xzf${__MVNW_QUIET_TAR:+"$__MVNW_QUIET_TAR"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -C "$TMP_DOWNLOAD_DIR" || die "failed to untar"
+fi
+printf %s\\n "$distributionUrl" >"$TMP_DOWNLOAD_DIR/$distributionUrlNameMain/mvnw.url"
+mv -- "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" "$MAVEN_HOME" || [ -d "$MAVEN_HOME" ] || die "fail to move MAVEN_HOME"
+
+clean || :
+exec_maven "$@"
diff --git a/trading_platform/mvnw.cmd b/trading_platform/mvnw.cmd
new file mode 100644
index 0000000..249bdf3
--- /dev/null
+++ b/trading_platform/mvnw.cmd
@@ -0,0 +1,149 @@
+<# : batch portion
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    http://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Apache Maven Wrapper startup batch script, version 3.3.2
+@REM
+@REM Optional ENV vars
+@REM   MVNW_REPOURL - repo url base for downloading maven distribution
+@REM   MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+@REM   MVNW_VERBOSE - true: enable verbose log; others: silence the output
+@REM ----------------------------------------------------------------------------
+
+@IF "%__MVNW_ARG0_NAME__%"=="" (SET __MVNW_ARG0_NAME__=%~nx0)
+@SET __MVNW_CMD__=
+@SET __MVNW_ERROR__=
+@SET __MVNW_PSMODULEP_SAVE=%PSModulePath%
+@SET PSModulePath=
+@FOR /F "usebackq tokens=1* delims==" %%A IN (`powershell -noprofile "& {$scriptDir='%~dp0'; $script='%__MVNW_ARG0_NAME__%'; icm -ScriptBlock ([Scriptblock]::Create((Get-Content -Raw '%~f0'))) -NoNewScope}"`) DO @(
+  IF "%%A"=="MVN_CMD" (set __MVNW_CMD__=%%B) ELSE IF "%%B"=="" (echo %%A) ELSE (echo %%A=%%B)
+)
+@SET PSModulePath=%__MVNW_PSMODULEP_SAVE%
+@SET __MVNW_PSMODULEP_SAVE=
+@SET __MVNW_ARG0_NAME__=
+@SET MVNW_USERNAME=
+@SET MVNW_PASSWORD=
+@IF NOT "%__MVNW_CMD__%"=="" (%__MVNW_CMD__% %*)
+@echo Cannot start maven from wrapper >&2 && exit /b 1
+@GOTO :EOF
+: end batch / begin powershell #>
+
+$ErrorActionPreference = "Stop"
+if ($env:MVNW_VERBOSE -eq "true") {
+  $VerbosePreference = "Continue"
+}
+
+# calculate distributionUrl, requires .mvn/wrapper/maven-wrapper.properties
+$distributionUrl = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionUrl
+if (!$distributionUrl) {
+  Write-Error "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties"
+}
+
+switch -wildcard -casesensitive ( $($distributionUrl -replace '^.*/','') ) {
+  "maven-mvnd-*" {
+    $USE_MVND = $true
+    $distributionUrl = $distributionUrl -replace '-bin\.[^.]*$',"-windows-amd64.zip"
+    $MVN_CMD = "mvnd.cmd"
+    break
+  }
+  default {
+    $USE_MVND = $false
+    $MVN_CMD = $script -replace '^mvnw','mvn'
+    break
+  }
+}
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-<version>,maven-mvnd-<version>-<platform>}/<hash>
+if ($env:MVNW_REPOURL) {
+  $MVNW_REPO_PATTERN = if ($USE_MVND) { "/org/apache/maven/" } else { "/maven/mvnd/" }
+  $distributionUrl = "$env:MVNW_REPOURL$MVNW_REPO_PATTERN$($distributionUrl -replace '^.*'+$MVNW_REPO_PATTERN,'')"
+}
+$distributionUrlName = $distributionUrl -replace '^.*/',''
+$distributionUrlNameMain = $distributionUrlName -replace '\.[^.]*$','' -replace '-bin$',''
+$MAVEN_HOME_PARENT = "$HOME/.m2/wrapper/dists/$distributionUrlNameMain"
+if ($env:MAVEN_USER_HOME) {
+  $MAVEN_HOME_PARENT = "$env:MAVEN_USER_HOME/wrapper/dists/$distributionUrlNameMain"
+}
+$MAVEN_HOME_NAME = ([System.Security.Cryptography.MD5]::Create().ComputeHash([byte[]][char[]]$distributionUrl) | ForEach-Object {$_.ToString("x2")}) -join ''
+$MAVEN_HOME = "$MAVEN_HOME_PARENT/$MAVEN_HOME_NAME"
+
+if (Test-Path -Path "$MAVEN_HOME" -PathType Container) {
+  Write-Verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+  Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
+  exit $?
+}
+
+if (! $distributionUrlNameMain -or ($distributionUrlName -eq $distributionUrlNameMain)) {
+  Write-Error "distributionUrl is not valid, must end with *-bin.zip, but found $distributionUrl"
+}
+
+# prepare tmp dir
+$TMP_DOWNLOAD_DIR_HOLDER = New-TemporaryFile
+$TMP_DOWNLOAD_DIR = New-Item -Itemtype Directory -Path "$TMP_DOWNLOAD_DIR_HOLDER.dir"
+$TMP_DOWNLOAD_DIR_HOLDER.Delete() | Out-Null
+trap {
+  if ($TMP_DOWNLOAD_DIR.Exists) {
+    try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+    catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+  }
+}
+
+New-Item -Itemtype Directory -Path "$MAVEN_HOME_PARENT" -Force | Out-Null
+
+# Download and Install Apache Maven
+Write-Verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+Write-Verbose "Downloading from: $distributionUrl"
+Write-Verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+$webclient = New-Object System.Net.WebClient
+if ($env:MVNW_USERNAME -and $env:MVNW_PASSWORD) {
+  $webclient.Credentials = New-Object System.Net.NetworkCredential($env:MVNW_USERNAME, $env:MVNW_PASSWORD)
+}
+[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
+$webclient.DownloadFile($distributionUrl, "$TMP_DOWNLOAD_DIR/$distributionUrlName") | Out-Null
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+$distributionSha256Sum = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionSha256Sum
+if ($distributionSha256Sum) {
+  if ($USE_MVND) {
+    Write-Error "Checksum validation is not supported for maven-mvnd. `nPlease disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties."
+  }
+  Import-Module $PSHOME\Modules\Microsoft.PowerShell.Utility -Function Get-FileHash
+  if ((Get-FileHash "$TMP_DOWNLOAD_DIR/$distributionUrlName" -Algorithm SHA256).Hash.ToLower() -ne $distributionSha256Sum) {
+    Write-Error "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised. If you updated your Maven version, you need to update the specified distributionSha256Sum property."
+  }
+}
+
+# unzip and move
+Expand-Archive "$TMP_DOWNLOAD_DIR/$distributionUrlName" -DestinationPath "$TMP_DOWNLOAD_DIR" | Out-Null
+Rename-Item -Path "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" -NewName $MAVEN_HOME_NAME | Out-Null
+try {
+  Move-Item -Path "$TMP_DOWNLOAD_DIR/$MAVEN_HOME_NAME" -Destination $MAVEN_HOME_PARENT | Out-Null
+} catch {
+  if (! (Test-Path -Path "$MAVEN_HOME" -PathType Container)) {
+    Write-Error "fail to move MAVEN_HOME"
+  }
+} finally {
+  try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+  catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+}
+
+Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
diff --git a/trading_platform/pom.xml b/trading_platform/pom.xml
new file mode 100644
index 0000000..8a7948d
--- /dev/null
+++ b/trading_platform/pom.xml
@@ -0,0 +1,98 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.3.5</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+    <groupId>com</groupId>
+    <artifactId>trading_platform</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>trading_platform</name>
+    <description>Demo project for Spring Boot</description>
+    <url/>
+    <licenses>
+        <license/>
+    </licenses>
+    <developers>
+        <developer/>
+    </developers>
+    <scm>
+        <connection/>
+        <developerConnection/>
+        <tag/>
+        <url/>
+    </scm>
+    <properties>
+        <java.version>17</java.version>
+    </properties>
+    <dependencies>
+        <!-- Spring Boot Web Starter -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <!-- MySQL数据库连接器依赖 -->
+        <dependency>
+            <groupId>com.mysql</groupId>
+            <artifactId>mysql-connector-j</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+
+        <!-- MyBatis依赖 -->
+        <dependency>
+            <groupId>org.mybatis.spring.boot</groupId>
+            <artifactId>mybatis-spring-boot-starter</artifactId>
+            <version>3.0.3</version>
+        </dependency>
+
+        <!-- Lombok依赖，简化代码 -->
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <optional>true</optional>
+        </dependency>
+
+        <!--测试依赖-->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <!--validation依赖-->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-validation</artifactId>
+        </dependency>
+
+        <!--java-jwt坐标-->
+        <dependency>
+            <groupId>com.auth0</groupId>
+            <artifactId>java-jwt</artifactId>
+            <version>4.4.0</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <configuration>
+                    <excludes>
+                        <exclude>
+                            <groupId>org.projectlombok</groupId>
+                            <artifactId>lombok</artifactId>
+                        </exclude>
+                    </excludes>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
diff --git a/trading_platform/src/main/java/com/trading_platform/TradingPlatformApplication.java b/trading_platform/src/main/java/com/trading_platform/TradingPlatformApplication.java
new file mode 100644
index 0000000..5f00c81
--- /dev/null
+++ b/trading_platform/src/main/java/com/trading_platform/TradingPlatformApplication.java
@@ -0,0 +1,13 @@
+package com.trading_platform;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class TradingPlatformApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(TradingPlatformApplication.class, args);
+	}
+
+}
diff --git a/trading_platform/src/main/java/com/trading_platform/config/WebConfig.java b/trading_platform/src/main/java/com/trading_platform/config/WebConfig.java
new file mode 100644
index 0000000..0b4ed19
--- /dev/null
+++ b/trading_platform/src/main/java/com/trading_platform/config/WebConfig.java
@@ -0,0 +1,39 @@
+package com.trading_platform.config;
+
+import com.trading_platform.interceptors.LoginInterceptor;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+/**
+ * 配置类，用于配置Web相关的组件
+ */
+@Configuration
+public class WebConfig implements WebMvcConfigurer {
+
+    // 登录拦截器，用于拦截未登录的请求
+    private final LoginInterceptor loginInterceptor;
+
+    /**
+     * 构造方法，用于注入LoginInterceptor
+     *
+     * @param loginInterceptor 登录拦截器
+     */
+    @Autowired
+    public WebConfig(LoginInterceptor loginInterceptor) {
+        this.loginInterceptor = loginInterceptor;
+    }
+
+    /**
+     * 添加拦截器，用于配置登录拦截器不拦截的路径
+     *
+     * @param registry 拦截器注册器
+     */
+    @Override
+    public void addInterceptors(InterceptorRegistry registry) {
+        // 登录和注册路径不进行拦截，以允许未登录用户访问这些路径
+        registry.addInterceptor(loginInterceptor).excludePathPatterns("/user/login", "/user/register");
+    }
+}
+
diff --git a/trading_platform/src/main/java/com/trading_platform/controller/UsersController.java b/trading_platform/src/main/java/com/trading_platform/controller/UsersController.java
new file mode 100644
index 0000000..2f26833
--- /dev/null
+++ b/trading_platform/src/main/java/com/trading_platform/controller/UsersController.java
@@ -0,0 +1,97 @@
+package com.trading_platform.controller;
+
+import com.trading_platform.entity.Result;
+import com.trading_platform.entity.Users;
+import com.trading_platform.service.UsersService;
+import com.trading_platform.utils.JwtUtil;
+import com.trading_platform.utils.Sha256Util;
+import jakarta.validation.constraints.Pattern;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * UserController类负责处理与用户相关的HTTP请求
+ * 它作为前端控制器，将请求委托给UserService进行处理
+ */
+@RestController
+@RequestMapping("/user")
+@Validated
+/**
+ * UserController类负责处理与用户相关的控制逻辑
+ * 它充当了用户界面层和业务逻辑层之间的桥梁
+ */
+public class UsersController {
+
+    // usersService用于执行与用户相关的业务逻辑
+    private final UsersService usersService;
+
+    /**
+     * 通过构造函数注入UsersService实例
+     *
+     * @param usersService 一个实现了用户业务逻辑的UsersService接口实例
+     *                     通过构造函数注入，使得UserController可以使用UsersService提供的方法
+     *                     这种依赖注入的方式有助于提高代码的可测试性和可维护性
+     */
+    @Autowired
+    public UsersController(UsersService usersService) {
+        this.usersService = usersService;
+    }
+
+
+    /**
+     * 处理用户注册请求
+     *
+     * @param username 用户名
+     * @param password 密码
+     * @return 注册结果
+     */
+    @RequestMapping("/register")
+    public Result register(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$") String password) {
+        //查询是否已存在该用户
+        Users user = usersService.findByUsername(username);
+        if (user != null) {
+            //用户已存在，返回错误信息
+            return Result.error("用户已存在");
+        } else {
+            //注册新用户
+            usersService.register(username, password);
+            //注册成功，返回成功信息
+            return Result.success();
+        }
+    }
+
+    /**
+     * 处理用户登录请求
+     *
+     * @param username 用户名，长度为5-16个字符，不能包含空格
+     * @param password 密码，长度为5-16个字符，不能包含空格
+     * @return 登录结果，包括错误信息或成功信息及JWT令牌
+     */
+    @PostMapping("/login")
+    public Result login(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$") String password) {
+        // 根据用户名查询用户信息
+        Users loginUser = usersService.findByUsername(username);
+        // 如果用户信息为空，说明用户名错误
+        if (loginUser == null) {
+            return Result.error("用户名错误");
+        }
+
+        // 比较密码，使用MD5加密后的密码与数据库中存储的密码进行比较
+        if (Sha256Util.getSHA256String(password).equals(loginUser.getPassword())) {
+            // 如果密码正确，返回成功信息及JWT令牌
+            Map<String, Object> claims = new HashMap<>();
+            claims.put("id", loginUser.getUserId());
+            claims.put("username", loginUser.getUsername());
+            String token = JwtUtil.genToken(claims);
+            return Result.success(token);
+        }
+        // 如果密码错误，返回错误信息
+        return Result.success("密码错误");
+    }
+}
diff --git a/trading_platform/src/main/java/com/trading_platform/entity/Result.java b/trading_platform/src/main/java/com/trading_platform/entity/Result.java
new file mode 100644
index 0000000..6e0b12c
--- /dev/null
+++ b/trading_platform/src/main/java/com/trading_platform/entity/Result.java
@@ -0,0 +1,48 @@
+package com.trading_platform.entity;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+//统一响应结果
+@NoArgsConstructor
+@AllArgsConstructor
+@Data
+public class Result<T> {
+    private Integer code; //业务状态码  0-成功  1-失败
+    private String message; //提示信息
+    private T data;//响应数据
+
+    /**
+     * 快速返回操作成功响应结果（带响应数据）
+     *
+     * @param <E> 泛型参数，表示返回数据的类型
+     * @param data 返回的数据内容
+     * @return 包含成功操作信息和数据的Result对象
+     */
+    public static <E> Result<E> success(E data) {
+        return new Result<>(0, "操作成功", data);
+    }
+
+    /**
+     * 快速返回操作成功响应结果
+     * 此方法用于创建一个表示操作成功的Result对象它主要用于简化操作成功情况下的响应结果构建
+     * 不需要详细说明成功操作的细节，因为方法名称已经清晰地表达了其意图
+     *
+     * @return Result 一个表示操作成功的Result对象，其中代码为0，消息为"操作成功"，数据为null
+     */
+    public static Result success() {
+        return new Result(0, "操作成功", null);
+    }
+
+    /**
+     * 创建一个表示错误的Result对象
+     * 此方法用于简化错误信息的封装过程，将常用的错误状态代码和空数据统一设置
+     *
+     * @param message 错误信息，用于描述具体的错误情况
+     * @return 返回一个Result对象，其中包含错误状态代码、错误信息和空数据
+     */
+    public static Result error(String message) {
+        return new Result(1, message, null);
+    }
+}
diff --git a/trading_platform/src/main/java/com/trading_platform/entity/Users.java b/trading_platform/src/main/java/com/trading_platform/entity/Users.java
new file mode 100644
index 0000000..ca79053
--- /dev/null
+++ b/trading_platform/src/main/java/com/trading_platform/entity/Users.java
@@ -0,0 +1,19 @@
+package com.trading_platform.entity;
+
+import lombok.Data;
+
+@Data
+public class Users {
+    private int userId;             // 用户id
+    private String headPicUrl;      // 用户头像
+    private String nickName;        // 用户昵称
+    private String username;        // 用户名
+    private String mobile;          // 手机号
+    private String password;        // 密码
+    private String sex;             // 性别
+    private String email;           // 邮箱
+    private String address;         // 地址
+    private String status;          // 状态
+    private String createTime;      // 创建时间
+    private String updateTime;      // 更新时间
+}
diff --git a/trading_platform/src/main/java/com/trading_platform/exception/GlobalExceptionHandler.java b/trading_platform/src/main/java/com/trading_platform/exception/GlobalExceptionHandler.java
new file mode 100644
index 0000000..4f8357a
--- /dev/null
+++ b/trading_platform/src/main/java/com/trading_platform/exception/GlobalExceptionHandler.java
@@ -0,0 +1,31 @@
+package com.trading_platform.exception;
+
+import com.trading_platform.entity.Result;
+import org.springframework.util.StringUtils;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+/**
+ * 全局异常处理类
+ * 用于捕获全局异常并返回统一的错误响应
+ */
+@RestControllerAdvice
+public class GlobalExceptionHandler {
+
+    /**
+     * 处理所有类型的异常
+     *
+     * @param e 异常对象
+     * @return 返回包含错误信息的Result对象
+     */
+    @ExceptionHandler(Exception.class)
+    public Result handleException(Exception e) {
+        // 打印异常堆栈跟踪信息，以便于调试和日志记录
+        e.printStackTrace();
+
+        // 构建并返回错误结果
+        // 如果异常消息非空，则使用异常消息，否则使用默认的“操作失败”消息
+        return Result.error(StringUtils.hasLength(e.getMessage()) ? e.getMessage() : "操作失败");
+    }
+}
+
diff --git a/trading_platform/src/main/java/com/trading_platform/interceptors/LoginInterceptor.java b/trading_platform/src/main/java/com/trading_platform/interceptors/LoginInterceptor.java
new file mode 100644
index 0000000..c63b9ca
--- /dev/null
+++ b/trading_platform/src/main/java/com/trading_platform/interceptors/LoginInterceptor.java
@@ -0,0 +1,37 @@
+package com.trading_platform.interceptors;
+
+import com.trading_platform.utils.JwtUtil;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import org.springframework.stereotype.Component;
+import org.springframework.web.servlet.HandlerInterceptor;
+
+import java.util.Map;
+
+@Component
+public class LoginInterceptor implements HandlerInterceptor {
+    /**
+     * 在请求处理之前进行拦截处理
+     *
+     * @param request  请求对象，用于获取请求头中的Authorization信息
+     * @param response 响应对象，用于设置响应状态码
+     * @param handler  处理请求的处理器对象
+     * @return 如果验证通过，则返回true继续执行下一个拦截器或处理器，否则返回false中断执行
+     * @throws Exception 如果在处理过程中发生异常，则抛出异常
+     */
+    @Override
+    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
+        // 从请求头中获取Authorization信息
+        String token = request.getHeader("Authorization");
+        try {
+            // 解析令牌，验证其有效性
+            Map<String, Object> claims = JwtUtil.parseToken(token);
+            // 如果令牌有效，继续执行下一个拦截器或处理器
+            return true;
+        } catch (Exception e) {
+            // 如果令牌无效或解析出错，设置响应状态码为401未授权，并中断执行
+            response.setStatus(401);
+            return false;
+        }
+    }
+}
diff --git a/trading_platform/src/main/java/com/trading_platform/mapper/UsersMapper.java b/trading_platform/src/main/java/com/trading_platform/mapper/UsersMapper.java
new file mode 100644
index 0000000..2bb250e
--- /dev/null
+++ b/trading_platform/src/main/java/com/trading_platform/mapper/UsersMapper.java
@@ -0,0 +1,38 @@
+package com.trading_platform.mapper;
+
+import com.trading_platform.entity.Users;
+import org.apache.ibatis.annotations.Insert;
+import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Options;
+import org.apache.ibatis.annotations.Select;
+import java.util.Optional;
+
+/**
+ * 用户映射器接口，用于定义用户相关数据库操作
+ * 使用MyBatis的@Mapper注解标识这是一个MyBatis映射器接口
+ */
+@Mapper
+public interface UsersMapper {
+
+    /**
+     * 根据用户名查询用户信息
+     *
+     * @param username 用户名，用于查询用户信息
+     * @return 返回一个Optional封装的Users对象，如果用户不存在，则返回Optional.empty()
+     */
+    @Select("SELECT * FROM users WHERE username=#{username}")
+    Optional<Users> findByUsername(String username);
+
+    /**
+     * 向数据库中插入一个新用户
+     *
+     * @param user 要插入的用户对象，包含用户的所有信息
+     * 使用MyBatis的@Insert注解定义插入操作的SQL语句
+     * 使用@Options注解配置插入操作生成的主键返回到user对象的id属性
+     */
+    @Insert("INSERT INTO users (headPicUrl, nickName, username, mobile, password, sex, email, address, status, create_time, update_time) " +
+            "VALUES (#{headPicUrl}, #{nickName}, #{username}, #{mobile}, #{password}, #{sex}, #{email}, #{address}, #{status}, #{createTime}, #{updateTime})")
+    @Options(useGeneratedKeys = true, keyProperty = "id")
+    void addUser(Users user);
+}
+
diff --git a/trading_platform/src/main/java/com/trading_platform/service/UsersService.java b/trading_platform/src/main/java/com/trading_platform/service/UsersService.java
new file mode 100644
index 0000000..51ed37c
--- /dev/null
+++ b/trading_platform/src/main/java/com/trading_platform/service/UsersService.java
@@ -0,0 +1,26 @@
+package com.trading_platform.service;
+
+import com.trading_platform.entity.Users;
+
+/**
+ * UsersService接口定义了用户服务的标准操作
+ * 它提供了用户查询和注册的功能
+ */
+public interface UsersService {
+    /**
+     * 根据用户名查找用户信息
+     *
+     * @param username 用户名，用于查询用户信息
+     * @return 返回用户对象如果找到，否则返回null
+     */
+    Users findByUsername(String username);
+
+    /**
+     * 注册新用户
+     *
+     * @param username 用户名，新用户的唯一标识
+     * @param password 密码，用于用户身份验证
+     */
+    void register(String username, String password);
+}
+
diff --git a/trading_platform/src/main/java/com/trading_platform/service/impl/UsersServiceImpl.java b/trading_platform/src/main/java/com/trading_platform/service/impl/UsersServiceImpl.java
new file mode 100644
index 0000000..d01b130
--- /dev/null
+++ b/trading_platform/src/main/java/com/trading_platform/service/impl/UsersServiceImpl.java
@@ -0,0 +1,46 @@
+package com.trading_platform.service.impl;
+
+import com.trading_platform.entity.Users;
+import com.trading_platform.mapper.UsersMapper;
+import com.trading_platform.service.UsersService;
+import com.trading_platform.utils.Sha256Util;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Service
+public class UsersServiceImpl implements UsersService {
+    /**
+     * 用户服务实现类，提供用户相关的业务操作
+     */
+
+    // 用户映射器，用于执行与用户相关的数据库操作
+    private final UsersMapper usersMapper;
+
+    @Autowired
+    public UsersServiceImpl(UsersMapper usersMapper) {
+        // 构造方法注入UsersMapper
+        this.usersMapper = usersMapper;
+    }
+
+    @Override
+    public Users findByUsername(String username) {
+        // 根据用户名查询用户信息
+        // 参数username：要查询的用户名
+        // 返回：用户对象，如果找不到则返回null
+        return usersMapper.findByUsername(username).orElse(null);
+    }
+
+    @Override
+    public void register(String username, String password) {
+        // 注册新用户
+        // 参数username：用户的用户名
+        // 参数password：用户的明文密码
+        String sha256String = Sha256Util.getSHA256String(password);
+        Users user = new Users();
+        user.setUsername(username);
+        user.setPassword(sha256String);
+        // 其他字段可以根据需要设置
+        usersMapper.addUser(user);
+    }
+}
+
diff --git a/trading_platform/src/main/java/com/trading_platform/utils/JwtUtil.java b/trading_platform/src/main/java/com/trading_platform/utils/JwtUtil.java
new file mode 100644
index 0000000..02b2ebd
--- /dev/null
+++ b/trading_platform/src/main/java/com/trading_platform/utils/JwtUtil.java
@@ -0,0 +1,49 @@
+package com.trading_platform.utils;
+
+import com.auth0.jwt.JWT;
+import com.auth0.jwt.algorithms.Algorithm;
+
+import java.util.Date;
+import java.util.Map;
+
+public class JwtUtil {
+    private static final String KEY = "itheima";
+
+    /**
+     * 生成JWT令牌
+     * 此方法接收一个包含声明的Map对象，并基于这些声明生成一个JWT令牌
+     * 令牌将在未来12小时内到期
+     *
+     * @param claims 一个包含各种声明（claims）的Map对象，这些声明将被编码到JWT中
+     * @return 返回生成的JWT令牌字符串
+     */
+    public static String genToken(Map<String, Object> claims) {
+        // 创建一个JWT，并添加自定义声明以及设置过期时间
+        return JWT.create()
+                .withClaim("claims", claims)
+                .withExpiresAt(new Date(System.currentTimeMillis() + 1000 * 6060 * 12))
+                .sign(Algorithm.HMAC256(KEY));
+    }
+
+    /**
+     * 解析令牌字符串并返回其中的声明信息
+     * 该方法使用JWT库验证令牌的完整性，并提取其中的声明内容
+     *
+     * @param token 令牌字符串，需要验证和解析的JWT令牌
+     * @return 包含令牌声明信息的映射对象，键为声明的名称，值为声明的值
+     */
+    public static Map<String, Object> parseToken(String token) {
+        // 使用预定义的密钥验证JWT令牌，并构建验证器
+        // 这里使用HMAC256算法进行签名验证
+        return JWT.require(Algorithm.HMAC256(KEY))
+                .build()
+                // 验证令牌的有效性，如果无效将抛出异常
+                .verify(token)
+                // 获取声明信息，声明是JWT中携带的自定义数据
+                .getClaim("claims")
+                // 将声明信息转换为映射对象并返回
+                .asMap();
+
+    }
+
+}
diff --git a/trading_platform/src/main/java/com/trading_platform/utils/Sha256Util.java b/trading_platform/src/main/java/com/trading_platform/utils/Sha256Util.java
new file mode 100644
index 0000000..c680b50
--- /dev/null
+++ b/trading_platform/src/main/java/com/trading_platform/utils/Sha256Util.java
@@ -0,0 +1,67 @@
+package com.trading_platform.utils;
+
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class Sha256Util {
+    private static final Logger logger = LoggerFactory.getLogger(Sha256Util.class);
+    protected static char hexDigits[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
+    private static final ThreadLocal<MessageDigest> messageDigestThreadLocal = new ThreadLocal<>() {
+        @Override
+        protected MessageDigest initialValue() {
+            try {
+                return MessageDigest.getInstance("SHA-256");
+            } catch (NoSuchAlgorithmException e) {
+                logger.error("初始化失败，MessageDigest不支持SHA-256.", e);
+                return null;
+            }
+        }
+    };
+
+    /**
+     * 将字符串转换为SHA-256哈希值。
+     *
+     * @param str 需要转换的字符串
+     * @return SHA-256哈希值
+     */
+    public static String getSHA256String(String str) {
+        return getSHA256String(str.getBytes());
+    }
+
+    /**
+     * 将字节数组转换为SHA-256哈希值。
+     *
+     * @param bytes 需要转换的字节数组
+     * @return SHA-256哈希值
+     */
+    public static String getSHA256String(byte[] bytes) {
+        MessageDigest md = messageDigestThreadLocal.get();
+        if (md == null) {
+            logger.error("MessageDigest 初始化失败，无法计算SHA-256哈希值。");
+            return null;
+        }
+        md.reset(); // 重置MessageDigest
+        byte[] digest = md.digest(bytes);
+        StringBuilder sb = new StringBuilder(64); // 设置初始容量
+        for (byte b : digest) {
+            sb.append(hexDigits[(b >> 4) & 0x0f]);
+            sb.append(hexDigits[b & 0x0f]);
+        }
+        return sb.toString();
+    }
+
+    /**
+     * 判断字符串的SHA-256校验码是否与一个已知的SHA-256码相匹配。
+     *
+     * @param password  要校验的字符串
+     * @param sha256PwdStr 已知的SHA-256校验码
+     * @return 如果匹配返回true，否则返回false
+     */
+    public static boolean checkSHA256(String password, String sha256PwdStr) {
+        String sha256Password = getSHA256String(password);
+        return sha256Password != null && sha256Password.equals(sha256PwdStr);
+    }
+}
diff --git a/trading_platform/src/main/resources/application.yml b/trading_platform/src/main/resources/application.yml
new file mode 100644
index 0000000..b1f565d
--- /dev/null
+++ b/trading_platform/src/main/resources/application.yml
@@ -0,0 +1,6 @@
+spring:
+  datasource:
+    name: localhost
+    url: jdbc:mysql://localhost:3306/secondhandtransactions?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=Asia/Shanghai
+    username: root
+    password: 123456
\ No newline at end of file
diff --git a/trading_platform/src/test/java/com/trading_platform/TradingPlatformApplicationTests.java b/trading_platform/src/test/java/com/trading_platform/TradingPlatformApplicationTests.java
new file mode 100644
index 0000000..578fa16
--- /dev/null
+++ b/trading_platform/src/test/java/com/trading_platform/TradingPlatformApplicationTests.java
@@ -0,0 +1,13 @@
+package com.trading_platform;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class TradingPlatformApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}