用户信息管理,帖子模块

1 month ago · f4a8658562
parent f632c54b7f
commit f4a8658562
20 changed files with 3691 additions and 0 deletions
--- a/.idea/sqldialects.xml
+++ b/.idea/sqldialects.xml
@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="SqlDialectMappings">
+    <file url="file://$PROJECT_DIR$/unilife-server/src/main/resources/db/init.sql" dialect="MySQL" />
+  </component>
+</project>
--- a/.idea/uiDesigner.xml
+++ b/.idea/uiDesigner.xml
@ -0,0 +1,124 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Palette2">
+    <group name="Swing">
+      <item class="com.intellij.uiDesigner.HSpacer" tooltip-text="Horizontal Spacer" icon="/com/intellij/uiDesigner/icons/hspacer.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="1" hsize-policy="6" anchor="0" fill="1" />
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+        <initial-values>
+          <property name="text" value="Button" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JRadioButton" icon="/com/intellij/uiDesigner/icons/radioButton.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="RadioButton" />
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+        <initial-values>
+          <property name="text" value="CheckBox" />
+        </initial-values>
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+        <initial-values>
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+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JFormattedTextField" icon="/com/intellij/uiDesigner/icons/formattedTextField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTextArea" icon="/com/intellij/uiDesigner/icons/textArea.svg" removable="false" auto-create-binding="true" can-attach-label="true">
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+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTextPane" icon="/com/intellij/uiDesigner/icons/textPane.svg" removable="false" auto-create-binding="true" can-attach-label="true">
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+          <preferred-size width="150" height="50" />
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+      </item>
+      <item class="javax.swing.JComboBox" icon="/com/intellij/uiDesigner/icons/comboBox.svg" removable="false" auto-create-binding="true" can-attach-label="true">
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+      </item>
+      <item class="javax.swing.JTable" icon="/com/intellij/uiDesigner/icons/table.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JList" icon="/com/intellij/uiDesigner/icons/list.svg" removable="false" auto-create-binding="true" can-attach-label="false">
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+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTree" icon="/com/intellij/uiDesigner/icons/tree.svg" removable="false" auto-create-binding="true" can-attach-label="false">
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+          <preferred-size width="150" height="50" />
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+      </item>
+      <item class="javax.swing.JTabbedPane" icon="/com/intellij/uiDesigner/icons/tabbedPane.svg" removable="false" auto-create-binding="true" can-attach-label="false">
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+          <preferred-size width="200" height="200" />
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+      </item>
+      <item class="javax.swing.JSpinner" icon="/com/intellij/uiDesigner/icons/spinner.svg" removable="false" auto-create-binding="true" can-attach-label="true">
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+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
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+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1" />
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+      <item class="javax.swing.JToolBar" icon="/com/intellij/uiDesigner/icons/toolbar.svg" removable="false" auto-create-binding="false" can-attach-label="false">
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+          <preferred-size width="-1" height="20" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JToolBar$Separator" icon="/com/intellij/uiDesigner/icons/toolbarSeparator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="0" anchor="0" fill="1" />
+      </item>
+      <item class="javax.swing.JScrollBar" icon="/com/intellij/uiDesigner/icons/scrollbar.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="0" anchor="0" fill="2" />
+      </item>
+    </group>
+  </component>
+</project>
--- a/Front/vue-unilife/package-lock.json
+++ b/Front/vue-unilife/package-lock.json
--- a/unilife-server/src/main/java/com/unilife/config/SwaggerConfig.java
+++ b/unilife-server/src/main/java/com/unilife/config/SwaggerConfig.java
@ -0,0 +1,18 @@
+package com.unilife.config;
+
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.info.Info;
+import io.swagger.v3.oas.models.security.SecurityRequirement;
+import io.swagger.v3.oas.models.security.SecurityScheme;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class SwaggerConfig {
+    @Bean
+    public OpenAPI customOpenAPI() {
+        return new OpenAPI()
+                .info(new Info().title("UniLife API").version("1.0.0"));
+    }
+}
--- a/unilife-server/src/main/java/com/unilife/controller/PostController.java
+++ b/unilife-server/src/main/java/com/unilife/controller/PostController.java
@ -0,0 +1,86 @@
+package com.unilife.controller;
+
+import com.unilife.common.result.Result;
+import com.unilife.model.dto.CreatePostDTO;
+import com.unilife.model.dto.UpdatePostDTO;
+import com.unilife.service.PostService;
+import com.unilife.utils.BaseContext;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+@Tag(name = "帖子管理")
+@RestController
+@RequestMapping("/posts")
+@Slf4j
+public class PostController {
+
+    @Autowired
+    private PostService postService;
+
+    @Operation(summary = "创建帖子")
+    @PostMapping
+    public Result<?> createPost(@RequestBody CreatePostDTO createPostDTO) {
+        // 从当前上下文获取用户ID
+        Long userId = BaseContext.getId();
+        if (userId == null) {
+            return Result.error(401, "未登录");
+        }
+        return postService.createPost(userId, createPostDTO);
+    }
+
+    @Operation(summary = "获取帖子详情")
+    @GetMapping("/{id}")
+    public Result<?> getPostDetail(@PathVariable("id") Long postId) {
+        // 从当前上下文获取用户ID，可能为null（未登录用户）
+        Long userId = BaseContext.getId();
+        return postService.getPostDetail(postId, userId);
+    }
+
+    @Operation(summary = "获取帖子列表")
+    @GetMapping
+    public Result<?> getPostList(
+            @RequestParam(value = "category", required = false) Long categoryId,
+            @RequestParam(value = "page", defaultValue = "1") Integer page,
+            @RequestParam(value = "size", defaultValue = "10") Integer size,
+            @RequestParam(value = "sort", defaultValue = "latest") String sort) {
+        return postService.getPostList(categoryId, page, size, sort);
+    }
+
+    @Operation(summary = "更新帖子")
+    @PutMapping("/{id}")
+    public Result<?> updatePost(
+            @PathVariable("id") Long postId,
+            @RequestBody UpdatePostDTO updatePostDTO) {
+        // 从当前上下文获取用户ID
+        Long userId = BaseContext.getId();
+        if (userId == null) {
+            return Result.error(401, "未登录");
+        }
+        return postService.updatePost(postId, userId, updatePostDTO);
+    }
+
+    @Operation(summary = "删除帖子")
+    @DeleteMapping("/{id}")
+    public Result<?> deletePost(@PathVariable("id") Long postId) {
+        // 从当前上下文获取用户ID
+        Long userId = BaseContext.getId();
+        if (userId == null) {
+            return Result.error(401, "未登录");
+        }
+        return postService.deletePost(postId, userId);
+    }
+
+    @Operation(summary = "点赞/取消点赞帖子")
+    @PostMapping("/{id}/like")
+    public Result<?> likePost(@PathVariable("id") Long postId) {
+        // 从当前上下文获取用户ID
+        Long userId = BaseContext.getId();
+        if (userId == null) {
+            return Result.error(401, "未登录");
+        }
+        return postService.likePost(postId, userId);
+    }
+}
--- a/unilife-server/src/main/java/com/unilife/mapper/PostMapper.java
+++ b/unilife-server/src/main/java/com/unilife/mapper/PostMapper.java
@ -0,0 +1,82 @@
+package com.unilife.mapper;
+
+import com.unilife.model.entity.Post;
+import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
+
+import java.util.List;
+
+/**
+ * 帖子数据访问层
+ */
+@Mapper
+public interface PostMapper {
+    /**
+     * 插入帖子
+     * @param post 帖子实体
+     */
+    void insert(Post post);
+    
+    /**
+     * 根据ID获取帖子
+     * @param id 帖子ID
+     * @return 帖子实体
+     */
+    Post getById(Long id);
+
+    /**
+     * 按分类获取帖子列表
+     * @param categoryId 分类ID，可以为null（表示获取所有分类）
+     * @return 帖子列表
+     */
+    List<Post> getListByCategory(@Param("categoryId") Long categoryId,@Param("sort")String sort);
+    
+    /**
+     * 获取帖子总数
+     * @param categoryId 分类ID，可为null
+     * @return 帖子总数
+     */
+    Integer getCount(@Param("categoryId") Long categoryId);
+    
+    /**
+     * 更新帖子
+     * @param post 帖子实体
+     */
+    void update(Post post);
+    
+    /**
+     * 删除帖子（逻辑删除）
+     * @param id 帖子ID
+     */
+    void delete(Long id);
+    
+    /**
+     * 增加浏览次数
+     * @param id 帖子ID
+     */
+    void incrementViewCount(Long id);
+    
+    /**
+     * 增加点赞次数
+     * @param id 帖子ID
+     */
+    void incrementLikeCount(Long id);
+    
+    /**
+     * 减少点赞次数
+     * @param id 帖子ID
+     */
+    void decrementLikeCount(Long id);
+    
+    /**
+     * 增加评论次数
+     * @param id 帖子ID
+     */
+    void incrementCommentCount(Long id);
+    
+    /**
+     * 减少评论次数
+     * @param id 帖子ID
+     */
+    void decrementCommentCount(Long id);
+}
--- a/unilife-server/src/main/java/com/unilife/model/dto/CreatePostDTO.java
+++ b/unilife-server/src/main/java/com/unilife/model/dto/CreatePostDTO.java
@ -0,0 +1,28 @@
+package com.unilife.model.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+/**
+ * 创建帖子的数据传输对象
+ */
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class CreatePostDTO {
+    /**
+     * 帖子标题
+     */
+    private String title;
+    
+    /**
+     * 帖子内容
+     */
+    private String content;
+    
+    /**
+     * 分类ID
+     */
+    private Long categoryId;
+}
--- a/unilife-server/src/main/java/com/unilife/model/dto/UpdateEmailDTO.java
+++ b/unilife-server/src/main/java/com/unilife/model/dto/UpdateEmailDTO.java
@ -0,0 +1,16 @@
+package com.unilife.model.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+/**
+ * 更新用户邮箱的数据传输对象
+ */
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class UpdateEmailDTO {
+    private String email;
+    private String code;
+}
--- a/unilife-server/src/main/java/com/unilife/model/dto/UpdatePasswordDTO.java
+++ b/unilife-server/src/main/java/com/unilife/model/dto/UpdatePasswordDTO.java
@ -0,0 +1,16 @@
+package com.unilife.model.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+/**
+ * 修改用户密码的数据传输对象
+ */
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class UpdatePasswordDTO {
+    private String code;
+    private String newPassword;
+}
--- a/unilife-server/src/main/java/com/unilife/model/dto/UpdatePostDTO.java
+++ b/unilife-server/src/main/java/com/unilife/model/dto/UpdatePostDTO.java
@ -0,0 +1,28 @@
+package com.unilife.model.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+/**
+ * 更新帖子的数据传输对象
+ */
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class UpdatePostDTO {
+    /**
+     * 帖子标题
+     */
+    private String title;
+    
+    /**
+     * 帖子内容
+     */
+    private String content;
+    
+    /**
+     * 分类ID
+     */
+    private Long categoryId;
+}
--- a/unilife-server/src/main/java/com/unilife/model/dto/UpdateProfileDTO.java
+++ b/unilife-server/src/main/java/com/unilife/model/dto/UpdateProfileDTO.java
@ -0,0 +1,20 @@
+package com.unilife.model.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+/**
+ * 更新用户个人资料的数据传输对象
+ */
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class UpdateProfileDTO {
+    private String nickname;
+    private String bio;
+    private Byte gender;
+    private String department;
+    private String major;
+    private String grade;
+}
--- a/unilife-server/src/main/java/com/unilife/model/entity/Category.java
+++ b/unilife-server/src/main/java/com/unilife/model/entity/Category.java
@ -0,0 +1,61 @@
+package com.unilife.model.entity;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.io.Serializable;
+import java.time.LocalDateTime;
+
+/**
+ * 分类实体类
+ */
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@Builder
+public class Category implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+
+    /**
+     * 分类ID
+     */
+    private Long id;
+
+    /**
+     * 分类名称
+     */
+    private String name;
+
+    /**
+     * 分类描述
+     */
+    private String description;
+
+    /**
+     * 分类图标
+     */
+    private String icon;
+
+    /**
+     * 排序
+     */
+    private Integer sort = 0;
+
+    /**
+     * 状态（0-禁用, 1-启用）
+     */
+    private Byte status = 1;
+
+    /**
+     * 创建时间
+     */
+    private LocalDateTime createdAt;
+
+    /**
+     * 更新时间
+     */
+    private LocalDateTime updatedAt;
+}
--- a/unilife-server/src/main/java/com/unilife/model/entity/Comment.java
+++ b/unilife-server/src/main/java/com/unilife/model/entity/Comment.java
@ -0,0 +1,66 @@
+package com.unilife.model.entity;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.io.Serializable;
+import java.time.LocalDateTime;
+
+/**
+ * 评论实体类
+ */
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@Builder
+public class Comment implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+
+    /**
+     * 评论ID
+     */
+    private Long id;
+
+    /**
+     * 帖子ID
+     */
+    private Long postId;
+
+    /**
+     * 评论用户ID
+     */
+    private Long userId;
+
+    /**
+     * 评论内容
+     */
+    private String content;
+
+    /**
+     * 父评论ID（回复某条评论）
+     */
+    private Long parentId;
+
+    /**
+     * 点赞次数
+     */
+    private Integer likeCount = 0;
+
+    /**
+     * 状态（0-删除, 1-正常）
+     */
+    private Byte status = 1;
+
+    /**
+     * 创建时间
+     */
+    private LocalDateTime createdAt;
+
+    /**
+     * 更新时间
+     */
+    private LocalDateTime updatedAt;
+}
--- a/unilife-server/src/main/java/com/unilife/model/entity/Post.java
+++ b/unilife-server/src/main/java/com/unilife/model/entity/Post.java
@ -0,0 +1,76 @@
+package com.unilife.model.entity;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.io.Serializable;
+import java.time.LocalDateTime;
+
+/**
+ * 帖子实体类
+ */
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@Builder
+public class Post implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+
+    /**
+     * 帖子ID
+     */
+    private Long id;
+
+    /**
+     * 发布用户ID
+     */
+    private Long userId;
+
+    /**
+     * 帖子标题
+     */
+    private String title;
+
+    /**
+     * 帖子内容
+     */
+    private String content;
+
+    /**
+     * 分类ID
+     */
+    private Long categoryId;
+
+    /**
+     * 浏览次数
+     */
+    private Integer viewCount = 0;
+
+    /**
+     * 点赞次数
+     */
+    private Integer likeCount = 0;
+
+    /**
+     * 评论次数
+     */
+    private Integer commentCount = 0;
+
+    /**
+     * 状态（0-删除, 1-正常, 2-置顶）
+     */
+    private Byte status = 1;
+
+    /**
+     * 创建时间
+     */
+    private LocalDateTime createdAt;
+
+    /**
+     * 更新时间
+     */
+    private LocalDateTime updatedAt;
+}
--- a/unilife-server/src/main/java/com/unilife/model/vo/PostListVO.java
+++ b/unilife-server/src/main/java/com/unilife/model/vo/PostListVO.java
@ -0,0 +1,77 @@
+package com.unilife.model.vo;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
+
+/**
+ * 帖子列表项视图对象
+ */
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@Builder
+public class PostListVO {
+    /**
+     * 帖子ID
+     */
+    private Long id;
+    
+    /**
+     * 帖子标题
+     */
+    private String title;
+    
+    /**
+     * 帖子摘要
+     */
+    private String summary;
+    
+    /**
+     * 发布用户ID
+     */
+    private Long userId;
+    
+    /**
+     * 发布用户昵称
+     */
+    private String nickname;
+    
+    /**
+     * 发布用户头像
+     */
+    private String avatar;
+    
+    /**
+     * 分类ID
+     */
+    private Long categoryId;
+    
+    /**
+     * 分类名称
+     */
+    private String categoryName;
+    
+    /**
+     * 浏览次数
+     */
+    private Integer viewCount;
+    
+    /**
+     * 点赞次数
+     */
+    private Integer likeCount;
+    
+    /**
+     * 评论次数
+     */
+    private Integer commentCount;
+    
+    /**
+     * 创建时间
+     */
+    private LocalDateTime createdAt;
+}
--- a/unilife-server/src/main/java/com/unilife/model/vo/PostVO.java
+++ b/unilife-server/src/main/java/com/unilife/model/vo/PostVO.java
@ -0,0 +1,87 @@
+package com.unilife.model.vo;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
+
+/**
+ * 帖子详情视图对象
+ */
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@Builder
+public class PostVO {
+    /**
+     * 帖子ID
+     */
+    private Long id;
+    
+    /**
+     * 帖子标题
+     */
+    private String title;
+    
+    /**
+     * 帖子内容
+     */
+    private String content;
+    
+    /**
+     * 发布用户ID
+     */
+    private Long userId;
+    
+    /**
+     * 发布用户昵称
+     */
+    private String nickname;
+    
+    /**
+     * 发布用户头像
+     */
+    private String avatar;
+    
+    /**
+     * 分类ID
+     */
+    private Long categoryId;
+    
+    /**
+     * 分类名称
+     */
+    private String categoryName;
+    
+    /**
+     * 浏览次数
+     */
+    private Integer viewCount;
+    
+    /**
+     * 点赞次数
+     */
+    private Integer likeCount;
+    
+    /**
+     * 评论次数
+     */
+    private Integer commentCount;
+    
+    /**
+     * 当前用户是否点赞
+     */
+    private Boolean isLiked;
+    
+    /**
+     * 创建时间
+     */
+    private LocalDateTime createdAt;
+    
+    /**
+     * 更新时间
+     */
+    private LocalDateTime updatedAt;
+}
--- a/unilife-server/src/main/java/com/unilife/service/PostService.java
+++ b/unilife-server/src/main/java/com/unilife/service/PostService.java
@ -0,0 +1,61 @@
+package com.unilife.service;
+
+import com.unilife.common.result.Result;
+import com.unilife.model.dto.CreatePostDTO;
+import com.unilife.model.dto.UpdatePostDTO;
+
+/**
+ * 帖子服务接口
+ */
+public interface PostService {
+    /**
+     * 创建帖子
+     * @param userId 用户ID
+     * @param createPostDTO 创建帖子DTO
+     * @return 结果
+     */
+    Result createPost(Long userId, CreatePostDTO createPostDTO);
+    
+    /**
+     * 获取帖子详情
+     * @param postId 帖子ID
+     * @param userId 当前用户ID，可为null
+     * @return 结果
+     */
+    Result getPostDetail(Long postId, Long userId);
+    
+    /**
+     * 获取帖子列表
+     * @param categoryId 分类ID，可为null
+     * @param page 页码
+     * @param size 每页大小
+     * @param sort 排序方式（latest-最新，hot-热门）
+     * @return 结果
+     */
+    Result getPostList(Long categoryId, Integer page, Integer size, String sort);
+    
+    /**
+     * 更新帖子
+     * @param postId 帖子ID
+     * @param userId 用户ID
+     * @param updatePostDTO 更新帖子DTO
+     * @return 结果
+     */
+    Result updatePost(Long postId, Long userId, UpdatePostDTO updatePostDTO);
+    
+    /**
+     * 删除帖子
+     * @param postId 帖子ID
+     * @param userId 用户ID
+     * @return 结果
+     */
+    Result deletePost(Long postId, Long userId);
+    
+    /**
+     * 点赞/取消点赞帖子
+     * @param postId 帖子ID
+     * @param userId 用户ID
+     * @return 结果
+     */
+    Result likePost(Long postId, Long userId);
+}
--- a/unilife-server/src/main/java/com/unilife/service/impl/PostServiceImpl.java
+++ b/unilife-server/src/main/java/com/unilife/service/impl/PostServiceImpl.java
@ -0,0 +1,259 @@
+package com.unilife.service.impl;
+
+import cn.hutool.core.bean.BeanUtil;
+import cn.hutool.core.util.StrUtil;
+import com.github.pagehelper.PageHelper;
+import com.github.pagehelper.PageInfo;
+import com.unilife.common.result.Result;
+// import com.unilife.mapper.CategoryMapper;
+import com.unilife.mapper.PostMapper;
+import com.unilife.mapper.UserMapper;
+import com.unilife.model.dto.CreatePostDTO;
+import com.unilife.model.dto.UpdatePostDTO;
+// import com.unilife.model.entity.Category;
+import com.unilife.model.entity.Post;
+import com.unilife.model.entity.User;
+import com.unilife.model.vo.PostListVO;
+import com.unilife.model.vo.PostVO;
+import com.unilife.service.PostService;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+@Slf4j
+@Service
+public class PostServiceImpl implements PostService {
+
+    @Autowired
+    private PostMapper postMapper;
+
+    @Autowired
+    private UserMapper userMapper;
+
+    // @Autowired
+    // private CategoryMapper categoryMapper;
+
+    @Override
+    public Result createPost(Long userId, CreatePostDTO createPostDTO) {
+        // 检查用户是否存在
+        User user = userMapper.getUserById(userId);
+        if (user == null) {
+            return Result.error(404, "用户不存在");
+        }
+
+        // 检查分类是否存在
+        // 注意：这里假设已经创建了CategoryMapper接口，实际开发中需要先创建
+        // Category category = categoryMapper.getById(createPostDTO.getCategoryId());
+        // if (category == null) {
+        //     return Result.error(404, "分类不存在");
+        // }
+
+        // 创建帖子
+        Post post = new Post();
+        post.setUserId(userId);
+        post.setTitle(createPostDTO.getTitle());
+        post.setContent(createPostDTO.getContent());
+        post.setCategoryId(createPostDTO.getCategoryId());
+        post.setViewCount(0);
+        post.setLikeCount(0);
+        post.setCommentCount(0);
+        post.setStatus((byte) 1);
+
+        // 保存帖子
+        postMapper.insert(post);
+
+        Map<String, Object> data = new HashMap<>();
+        data.put("postId", post.getId());
+
+        return Result.success(data, "发布成功");
+    }
+
+    @Override
+    public Result getPostDetail(Long postId, Long userId) {
+        // 获取帖子
+        Post post = postMapper.getById(postId);
+        if (post == null) {
+            return Result.error(404, "帖子不存在");
+        }
+
+        // 增加浏览次数
+        postMapper.incrementViewCount(postId);
+
+        // 获取发布用户信息
+        User user = userMapper.getUserById(post.getUserId());
+
+        // 获取分类信息
+        // 注意：这里假设已经创建了CategoryMapper接口，实际开发中需要先创建
+        // Category category = categoryMapper.getById(post.getCategoryId());
+
+        // 构建返回数据
+        PostVO postVO = PostVO.builder()
+                .id(post.getId())
+                .title(post.getTitle())
+                .content(post.getContent())
+                .userId(post.getUserId())
+                .nickname(user != null ? user.getNickname() : "未知用户")
+                .avatar(user != null ? user.getAvatar() : null)
+                .categoryId(post.getCategoryId())
+                .categoryName("未知分类") // 实际开发中应该从category对象获取
+                .viewCount(post.getViewCount() + 1) // 已经增加了浏览次数
+                .likeCount(post.getLikeCount())
+                .commentCount(post.getCommentCount())
+                .isLiked(false) // 实际开发中应该查询用户是否点赞
+                .createdAt(post.getCreatedAt())
+                .updatedAt(post.getUpdatedAt())
+                .build();
+
+        return Result.success(postVO);
+    }
+
+    @Override
+    public Result getPostList(Long categoryId, Integer page, Integer size, String sort) {
+        // 参数校验
+        if (page == null || page < 1) page = 1;
+        if (size == null || size < 1 || size > 50) size = 10;
+        if (StrUtil.isBlank(sort)) sort = "latest";
+
+        // 只使用PageHelper进行分页，不设置排序
+        PageHelper.startPage(page, size);
+
+        // 调用mapper方法，传入排序参数
+        List<Post> posts = postMapper.getListByCategory(categoryId, sort);
+
+        // 获取分页信息
+        PageInfo<Post> pageInfo = new PageInfo<>(posts);
+
+        // 转换为VO
+        List<PostListVO> postListVOs = posts.stream().map(post -> {
+            User user = userMapper.getUserById(post.getUserId());
+            return PostListVO.builder()
+                    .id(post.getId())
+                    .title(post.getTitle())
+                    .summary(generateSummary(post.getContent()))
+                    .userId(post.getUserId())
+                    .nickname(user != null ? user.getNickname() : "未知用户")
+                    .avatar(user != null ? user.getAvatar() : null)
+                    .categoryId(post.getCategoryId())
+                    .categoryName("未知分类")
+                    .viewCount(post.getViewCount())
+                    .likeCount(post.getLikeCount())
+                    .commentCount(post.getCommentCount())
+                    .createdAt(post.getCreatedAt())
+                    .build();
+        }).collect(Collectors.toList());
+
+        // 返回结果
+        Map<String, Object> data = new HashMap<>();
+        data.put("total", pageInfo.getTotal());
+        data.put("list", postListVOs);
+        data.put("pages", pageInfo.getPages());
+
+        return Result.success(data);
+    }
+
+    @Override
+    public Result updatePost(Long postId, Long userId, UpdatePostDTO updatePostDTO) {
+        // 获取帖子
+        Post post = postMapper.getById(postId);
+        if (post == null) {
+            return Result.error(404, "帖子不存在");
+        }
+
+        // 检查是否有权限更新
+        if (!post.getUserId().equals(userId)) {
+            return Result.error(403, "无权限更新此帖子");
+        }
+
+        // 检查分类是否存在
+        // 注意：这里假设已经创建了CategoryMapper接口，实际开发中需要先创建
+        // Category category = categoryMapper.getById(updatePostDTO.getCategoryId());
+        // if (category == null) {
+        //     return Result.error(404, "分类不存在");
+        // }
+
+        // 更新帖子
+        post.setTitle(updatePostDTO.getTitle());
+        post.setContent(updatePostDTO.getContent());
+        post.setCategoryId(updatePostDTO.getCategoryId());
+
+        // 保存更新
+        postMapper.update(post);
+
+        return Result.success(null, "更新成功");
+    }
+
+    @Override
+    public Result deletePost(Long postId, Long userId) {
+        // 获取帖子
+        Post post = postMapper.getById(postId);
+        if (post == null) {
+            return Result.error(404, "帖子不存在");
+        }
+
+        // 检查是否有权限删除
+        if (!post.getUserId().equals(userId)) {
+            return Result.error(403, "无权限删除此帖子");
+        }
+
+        // 删除帖子（逻辑删除）
+        postMapper.delete(postId);
+
+        return Result.success(null, "删除成功");
+    }
+
+    @Override
+    public Result likePost(Long postId, Long userId) {
+        // 获取帖子
+        Post post = postMapper.getById(postId);
+        if (post == null) {
+            return Result.error(404, "帖子不存在");
+        }
+
+        // 检查用户是否已点赞
+        // 注意：这里需要创建一个点赞表和相应的Mapper，实际开发中需要先创建
+        boolean isLiked = false; // postLikeMapper.isLiked(postId, userId);
+
+        if (isLiked) {
+            // 取消点赞
+            // postLikeMapper.delete(postId, userId);
+            postMapper.decrementLikeCount(postId);
+            return Result.success(null, "取消点赞成功");
+        } else {
+            // 添加点赞
+            // postLikeMapper.insert(postId, userId);
+            postMapper.incrementLikeCount(postId);
+            return Result.success(null, "点赞成功");
+        }
+    }
+
+    /**
+     * 生成摘要
+     * @param content 内容
+     * @return 摘要
+     */
+    private String generateSummary(String content) {
+        if (StrUtil.isBlank(content)) {
+            return "";
+        }
+
+        // 去除HTML标签
+        content = content.replaceAll("<[^>]+>", "");
+
+        // 截取前100个字符作为摘要
+        int length = Math.min(content.length(), 100);
+        String summary = content.substring(0, length);
+
+        // 如果内容超过100个字符，添加省略号
+        if (content.length() > 100) {
+            summary += "...";
+        }
+
+        return summary;
+    }
+}
--- a/unilife-server/src/main/resources/db/init.sql
+++ b/unilife-server/src/main/resources/db/init.sql
@ -0,0 +1,187 @@
+-- UniLife数据库初始化脚本
+
+-- 创建数据库（如果不存在）
+CREATE DATABASE IF NOT EXISTS UniLife DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+
+-- 使用数据库
+USE UniLife;
+
+-- 用户表
+CREATE TABLE IF NOT EXISTS `users` (
+  `id` BIGINT PRIMARY KEY AUTO_INCREMENT COMMENT '用户ID',
+  `username` VARCHAR(50) NOT NULL UNIQUE COMMENT '用户名',
+  `email` VARCHAR(100) NOT NULL UNIQUE COMMENT '邮箱地址（学校邮箱）',
+  `password` VARCHAR(255) NOT NULL COMMENT '密码（加密存储）',
+  `nickname` VARCHAR(50) NOT NULL COMMENT '昵称',
+  `avatar` VARCHAR(255) DEFAULT NULL COMMENT '头像URL',
+  `bio` TEXT DEFAULT NULL COMMENT '个人简介',
+  `gender` TINYINT DEFAULT 0 COMMENT '性别（0-未知, 1-男, 2-女）',
+  `student_id` VARCHAR(20) UNIQUE DEFAULT NULL COMMENT '学号',
+  `department` VARCHAR(100) DEFAULT NULL COMMENT '院系',
+  `major` VARCHAR(100) DEFAULT NULL COMMENT '专业',
+  `grade` VARCHAR(20) DEFAULT NULL COMMENT '年级',
+  `points` INT DEFAULT 0 COMMENT '积分',
+  `role` TINYINT DEFAULT 0 COMMENT '角色（0-普通用户, 1-版主, 2-管理员）',
+  `status` TINYINT DEFAULT 1 COMMENT '状态（0-禁用, 1-启用）',
+  `is_verified` TINYINT DEFAULT 0 COMMENT '是否验证（0-未验证, 1-已验证）',
+  `login_ip` VARCHAR(50) DEFAULT NULL COMMENT '最近登录IP',
+  `login_time` DATETIME DEFAULT NULL COMMENT '最近登录时间',
+  `created_at` DATETIME DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+  `updated_at` DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
+  INDEX `idx_email` (`email`),
+  INDEX `idx_username` (`username`),
+  INDEX `idx_student_id` (`student_id`),
+  INDEX `idx_role` (`role`),
+  INDEX `idx_status` (`status`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='用户表';
+
+-- 分类表
+CREATE TABLE IF NOT EXISTS `categories` (
+  `id` BIGINT PRIMARY KEY AUTO_INCREMENT COMMENT '分类ID',
+  `name` VARCHAR(50) NOT NULL UNIQUE COMMENT '分类名称',
+  `description` VARCHAR(255) DEFAULT NULL COMMENT '分类描述',
+  `icon` VARCHAR(255) DEFAULT NULL COMMENT '分类图标',
+  `sort` INT DEFAULT 0 COMMENT '排序',
+  `status` TINYINT DEFAULT 1 COMMENT '状态（0-禁用, 1-启用）',
+  `created_at` DATETIME DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+  `updated_at` DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
+  INDEX `idx_status` (`status`),
+  INDEX `idx_sort` (`sort`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='分类表';
+
+-- 帖子表
+CREATE TABLE IF NOT EXISTS `posts` (
+  `id` BIGINT PRIMARY KEY AUTO_INCREMENT COMMENT '帖子ID',
+  `user_id` BIGINT NOT NULL COMMENT '发布用户ID',
+  `title` VARCHAR(100) NOT NULL COMMENT '帖子标题',
+  `content` TEXT NOT NULL COMMENT '帖子内容',
+  `category_id` BIGINT NOT NULL COMMENT '分类ID',
+  `view_count` INT DEFAULT 0 COMMENT '浏览次数',
+  `like_count` INT DEFAULT 0 COMMENT '点赞次数',
+  `comment_count` INT DEFAULT 0 COMMENT '评论次数',
+  `status` TINYINT DEFAULT 1 COMMENT '状态（0-删除, 1-正常, 2-置顶）',
+  `created_at` DATETIME DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+  `updated_at` DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
+  INDEX `idx_user_id` (`user_id`),
+  INDEX `idx_category_id` (`category_id`),
+  INDEX `idx_status` (`status`),
+  INDEX `idx_created_at` (`created_at`),
+  FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE,
+  FOREIGN KEY (`category_id`) REFERENCES `categories` (`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='帖子表';
+
+-- 评论表
+CREATE TABLE IF NOT EXISTS `comments` (
+  `id` BIGINT PRIMARY KEY AUTO_INCREMENT COMMENT '评论ID',
+  `post_id` BIGINT NOT NULL COMMENT '帖子ID',
+  `user_id` BIGINT NOT NULL COMMENT '评论用户ID',
+  `content` TEXT NOT NULL COMMENT '评论内容',
+  `parent_id` BIGINT DEFAULT NULL COMMENT '父评论ID（回复某条评论）',
+  `like_count` INT DEFAULT 0 COMMENT '点赞次数',
+  `status` TINYINT DEFAULT 1 COMMENT '状态（0-删除, 1-正常）',
+  `created_at` DATETIME DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+  `updated_at` DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
+  INDEX `idx_post_id` (`post_id`),
+  INDEX `idx_user_id` (`user_id`),
+  INDEX `idx_parent_id` (`parent_id`),
+  INDEX `idx_status` (`status`),
+  FOREIGN KEY (`post_id`) REFERENCES `posts` (`id`) ON DELETE CASCADE,
+  FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE,
+  FOREIGN KEY (`parent_id`) REFERENCES `comments` (`id`) ON DELETE SET NULL
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='评论表';
+
+-- 点赞表（用户-帖子）
+CREATE TABLE IF NOT EXISTS `post_likes` (
+  `id` BIGINT PRIMARY KEY AUTO_INCREMENT COMMENT '点赞ID',
+  `user_id` BIGINT NOT NULL COMMENT '用户ID',
+  `post_id` BIGINT NOT NULL COMMENT '帖子ID',
+  `created_at` DATETIME DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+  UNIQUE KEY `uk_user_post` (`user_id`, `post_id`),
+  FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE,
+  FOREIGN KEY (`post_id`) REFERENCES `posts` (`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='帖子点赞表';
+
+-- 点赞表（用户-评论）
+CREATE TABLE IF NOT EXISTS `comment_likes` (
+  `id` BIGINT PRIMARY KEY AUTO_INCREMENT COMMENT '点赞ID',
+  `user_id` BIGINT NOT NULL COMMENT '用户ID',
+  `comment_id` BIGINT NOT NULL COMMENT '评论ID',
+  `created_at` DATETIME DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+  UNIQUE KEY `uk_user_comment` (`user_id`, `comment_id`),
+  FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE,
+  FOREIGN KEY (`comment_id`) REFERENCES `comments` (`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='评论点赞表';
+
+-- 资源表
+CREATE TABLE IF NOT EXISTS `resources` (
+  `id` BIGINT PRIMARY KEY AUTO_INCREMENT COMMENT '资源ID',
+  `user_id` BIGINT NOT NULL COMMENT '上传用户ID',
+  `title` VARCHAR(100) NOT NULL COMMENT '资源标题',
+  `description` TEXT DEFAULT NULL COMMENT '资源描述',
+  `file_url` VARCHAR(255) NOT NULL COMMENT '文件URL',
+  `file_size` BIGINT NOT NULL COMMENT '文件大小（字节）',
+  `file_type` VARCHAR(50) NOT NULL COMMENT '文件类型',
+  `category_id` BIGINT NOT NULL COMMENT '分类ID',
+  `download_count` INT DEFAULT 0 COMMENT '下载次数',
+  `like_count` INT DEFAULT 0 COMMENT '点赞次数',
+  `status` TINYINT DEFAULT 1 COMMENT '状态（0-删除, 1-正常）',
+  `created_at` DATETIME DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+  `updated_at` DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
+  INDEX `idx_user_id` (`user_id`),
+  INDEX `idx_category_id` (`category_id`),
+  INDEX `idx_status` (`status`),
+  FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE,
+  FOREIGN KEY (`category_id`) REFERENCES `categories` (`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='资源表';
+
+-- 课程表
+CREATE TABLE IF NOT EXISTS `courses` (
+  `id` BIGINT PRIMARY KEY AUTO_INCREMENT COMMENT '课程ID',
+  `user_id` BIGINT NOT NULL COMMENT '用户ID',
+  `name` VARCHAR(100) NOT NULL COMMENT '课程名称',
+  `teacher` VARCHAR(50) DEFAULT NULL COMMENT '教师姓名',
+  `location` VARCHAR(100) DEFAULT NULL COMMENT '上课地点',
+  `day_of_week` TINYINT NOT NULL COMMENT '星期几（1-7）',
+  `start_time` TIME NOT NULL COMMENT '开始时间',
+  `end_time` TIME NOT NULL COMMENT '结束时间',
+  `start_week` TINYINT NOT NULL COMMENT '开始周次',
+  `end_week` TINYINT NOT NULL COMMENT '结束周次',
+  `color` VARCHAR(20) DEFAULT NULL COMMENT '显示颜色',
+  `status` TINYINT DEFAULT 1 COMMENT '状态（0-删除, 1-正常）',
+  `created_at` DATETIME DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+  `updated_at` DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
+  INDEX `idx_user_id` (`user_id`),
+  FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='课程表';
+
+-- 日程表
+CREATE TABLE IF NOT EXISTS `schedules` (
+  `id` BIGINT PRIMARY KEY AUTO_INCREMENT COMMENT '日程ID',
+  `user_id` BIGINT NOT NULL COMMENT '用户ID',
+  `title` VARCHAR(100) NOT NULL COMMENT '日程标题',
+  `description` TEXT DEFAULT NULL COMMENT '日程描述',
+  `start_time` DATETIME NOT NULL COMMENT '开始时间',
+  `end_time` DATETIME NOT NULL COMMENT '结束时间',
+  `location` VARCHAR(100) DEFAULT NULL COMMENT '地点',
+  `is_all_day` TINYINT DEFAULT 0 COMMENT '是否全天（0-否, 1-是）',
+  `reminder` TINYINT DEFAULT NULL COMMENT '提醒时间（分钟）',
+  `color` VARCHAR(20) DEFAULT NULL COMMENT '显示颜色',
+  `status` TINYINT DEFAULT 1 COMMENT '状态（0-删除, 1-正常）',
+  `created_at` DATETIME DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
+  `updated_at` DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
+  INDEX `idx_user_id` (`user_id`),
+  INDEX `idx_start_time` (`start_time`),
+  FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='日程表';
+
+-- 初始化分类数据
+INSERT INTO `categories` (`name`, `description`, `icon`, `sort`, `status`) VALUES
+('学习交流', '讨论学习相关话题', 'icon-study', 1, 1),
+('校园生活', '分享校园生活点滴', 'icon-campus', 2, 1),
+('兴趣爱好', '交流各类兴趣爱好', 'icon-hobby', 3, 1),
+('求职就业', '分享求职经验和就业信息', 'icon-job', 4, 1),
+('资源共享', '分享各类学习资源', 'icon-resource', 5, 1);
+
+-- 初始化管理员账号
+INSERT INTO `users` (`username`, `email`, `password`, `nickname`, `role`, `status`, `is_verified`) VALUES
+('admin', 'admin@unilife.com', '123456', '系统管理员', 2, 1, 1);
--- a/unilife-server/src/main/resources/mappers/PostMapper.xml
+++ b/unilife-server/src/main/resources/mappers/PostMapper.xml
@ -0,0 +1,110 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
+<mapper namespace="com.unilife.mapper.PostMapper">
+    <resultMap id="postResultMap" type="com.unilife.model.entity.Post">
+        <id column="id" property="id"/>
+        <result column="user_id" property="userId"/>
+        <result column="title" property="title"/>
+        <result column="content" property="content"/>
+        <result column="category_id" property="categoryId"/>
+        <result column="view_count" property="viewCount"/>
+        <result column="like_count" property="likeCount"/>
+        <result column="comment_count" property="commentCount"/>
+        <result column="status" property="status"/>
+        <result column="created_at" property="createdAt"/>
+        <result column="updated_at" property="updatedAt"/>
+    </resultMap>
+    
+    <insert id="insert" parameterType="com.unilife.model.entity.Post" useGeneratedKeys="true" keyProperty="id">
+        INSERT INTO posts (
+            user_id, title, content, category_id, view_count, like_count, comment_count, status, created_at, updated_at
+        ) VALUES (
+            #{userId}, #{title}, #{content}, #{categoryId}, #{viewCount}, #{likeCount}, #{commentCount}, #{status}, NOW(), NOW()
+        )
+    </insert>
+    
+    <select id="getById" resultMap="postResultMap">
+        SELECT id, user_id, title, content, category_id, view_count, like_count, comment_count, status, created_at, updated_at
+        FROM posts
+        WHERE id = #{id} AND status != 0
+    </select>
+
+    <select id="getListByCategory" resultType="com.unilife.model.entity.Post">
+        SELECT * FROM posts
+        <where>
+            <if test="categoryId != null">
+                category_id = #{categoryId}
+            </if>
+        </where>
+        <choose>
+            <when test="sort == 'hot'">
+                ORDER BY view_count DESC
+            </when>
+            <when test="sort == 'likes'">
+                ORDER BY like_count DESC
+            </when>
+            <when test="sort == 'comments'">
+                ORDER BY comment_count DESC
+            </when>
+            <otherwise>
+                ORDER BY created_at DESC
+            </otherwise>
+        </choose>
+    </select>
+    
+    <select id="getCount" resultType="java.lang.Integer">
+        SELECT COUNT(*)
+        FROM posts
+        WHERE status != 0
+        <if test="categoryId != null">
+            AND category_id = #{categoryId}
+        </if>
+    </select>
+    
+    <update id="update" parameterType="com.unilife.model.entity.Post">
+        UPDATE posts
+        SET title = #{title},
+            content = #{content},
+            category_id = #{categoryId},
+            status = #{status},
+            updated_at = NOW()
+        WHERE id = #{id}
+    </update>
+    
+    <update id="delete">
+        UPDATE posts
+        SET status = 0,
+            updated_at = NOW()
+        WHERE id = #{id}
+    </update>
+    
+    <update id="incrementViewCount">
+        UPDATE posts
+        SET view_count = view_count + 1
+        WHERE id = #{id}
+    </update>
+    
+    <update id="incrementLikeCount">
+        UPDATE posts
+        SET like_count = like_count + 1
+        WHERE id = #{id}
+    </update>
+    
+    <update id="decrementLikeCount">
+        UPDATE posts
+        SET like_count = GREATEST(like_count - 1, 0)
+        WHERE id = #{id}
+    </update>
+    
+    <update id="incrementCommentCount">
+        UPDATE posts
+        SET comment_count = comment_count + 1
+        WHERE id = #{id}
+    </update>
+    
+    <update id="decrementCommentCount">
+        UPDATE posts
+        SET comment_count = GREATEST(comment_count - 1, 0)
+        WHERE id = #{id}
+    </update>
+</mapper>