From a27c99299fb8d96c4813bf095edbbeffbb076cd4 Mon Sep 17 00:00:00 2001
From: wangcong <2981069299@qq.com>
Date: Mon, 1 Jun 2026 19:50:41 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BD=BF=E7=94=A8=20db.properties=20=E9=85=8D?=
 =?UTF-8?q?=E7=BD=AE=E6=95=B0=E6=8D=AE=E5=BA=93=E8=BF=9E=E6=8E=A5=E4=BD=BF?=
 =?UTF-8?q?=E7=94=A8=20resultMap=20=E5=AE=9E=E7=8E=B0=E6=9F=A5=E8=AF=A2?=
MIME-Version: 1.0
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---
 .../src/com/ssm/mapper/UserMapper.xml         | 28 +++++++++++++------
 .../src/com/ssm/test/TestUser.java            | 28 ++++++++++---------
 ffms-MyBatisProject/src/config.xml            | 16 +++++------
 ffms-MyBatisProject/src/db.properties         |  4 +++
 4 files changed, 46 insertions(+), 30 deletions(-)
 create mode 100644 ffms-MyBatisProject/src/db.properties

diff --git a/ffms-MyBatisProject/src/com/ssm/mapper/UserMapper.xml b/ffms-MyBatisProject/src/com/ssm/mapper/UserMapper.xml
index 68058f4..d7045a7 100644
--- a/ffms-MyBatisProject/src/com/ssm/mapper/UserMapper.xml
+++ b/ffms-MyBatisProject/src/com/ssm/mapper/UserMapper.xml
@@ -5,21 +5,31 @@
 
 <mapper namespace="com.ssm.mapper.UserMapper">
 
-    <!-- 查询所有用户 -->
-    <select id="findAllUser" resultType="com.ssm.entity.User">
+    <!-- 1. 定义 resultMap，映射数据库列名到实体类属性 -->
+    <resultMap id="userResultMap" type="com.ssm.entity.User">
+        <id column="id" property="id"/>
+        <result column="username" property="username"/>
+        <result column="userpass" property="userpass"/>
+        <result column="truename" property="truename"/>
+        <result column="phone" property="phone"/>
+    </resultMap>
+
+    <!-- 2. 查询所有用户（使用 resultMap） -->
+    <select id="findAllUser" resultMap="userResultMap">
         SELECT * FROM user
     </select>
 
-    <!-- 根据ID查询用户 -->
-    <select id="findUserById" resultType="com.ssm.entity.User" parameterType="int">
+    <!-- 3. 根据ID查询用户（使用 resultMap） -->
+    <select id="findUserById" resultMap="userResultMap" parameterType="int">
         SELECT * FROM user WHERE id = #{id}
     </select>
-    <!-- 添加用户 -->
+
+    <!-- 之前的增/删/改代码保留 -->
     <insert id="addUser" parameterType="com.ssm.entity.User">
-        INSERT INTO user (username, userpass, truename, phone)
-        VALUES (#{username}, #{userpass}, #{truename}, #{phone})
+        INSERT INTO user(username,userpass,truename,phone)
+        VALUES(#{username},#{userpass},#{truename},#{phone})
     </insert>
-    <!-- 修改用户信息 -->
+
     <update id="updateUser" parameterType="com.ssm.entity.User">
         UPDATE user
         SET username = #{username},
@@ -29,8 +39,8 @@
         WHERE id = #{id}
     </update>
 
-    <!-- 根据ID删除用户 -->
     <delete id="deleteUserById" parameterType="int">
         DELETE FROM user WHERE id = #{id}
     </delete>
+
 </mapper>
\ No newline at end of file
diff --git a/ffms-MyBatisProject/src/com/ssm/test/TestUser.java b/ffms-MyBatisProject/src/com/ssm/test/TestUser.java
index 5f5f7d8..9b016fd 100644
--- a/ffms-MyBatisProject/src/com/ssm/test/TestUser.java
+++ b/ffms-MyBatisProject/src/com/ssm/test/TestUser.java
@@ -5,6 +5,7 @@ import org.apache.ibatis.io.Resources;
 import org.apache.ibatis.session.SqlSession;
 import org.apache.ibatis.session.SqlSessionFactory;
 import org.apache.ibatis.session.SqlSessionFactoryBuilder;
+
 import java.util.List;
 
 public class TestUser {
@@ -14,30 +15,31 @@ public class TestUser {
 
         try (SqlSession session = factory.openSession()) {
 
-            // 1. 查询所有
-            System.out.println("===== 组长：查询所有用户 =====");
-            List<User> list = session.selectList("com.ssm.mapper.UserMapper.findAllUser");
-            for (User u : list) {
-                System.out.println(u);
+            // ========== 第13次任务：用 resultMap 查询 ==========
+            // 1. 查询所有用户
+            System.out.println("===== 组长：查询所有用户（使用 resultMap） =====");
+            List<User> allUsers = session.selectList("com.ssm.mapper.UserMapper.findAllUser");
+            for (User user : allUsers) {
+                System.out.println(user);
             }
 
-            // 2. 根据ID查
-            System.out.println("\n===== 组长：按ID查询 =====");
-            User u = session.selectOne("com.ssm.mapper.UserMapper.findUserById", 1);
-            System.out.println(u);
+            // 2. 根据ID查询用户
+            System.out.println("\n===== 组长：按ID查询用户（ID=1，使用 resultMap） =====");
+            User userById = session.selectOne("com.ssm.mapper.UserMapper.findUserById", 1);
+            System.out.println(userById);
 
-            // ====================== 3. 组长：添加用户 ======================
+            // ========== 之前的增删改代码可以保留（不影响第13次任务） ==========
+            // 添加用户
             User newUser = new User();
             newUser.setUsername("zuzhang");
             newUser.setUserpass("123456");
             newUser.setTruename("组长");
             newUser.setPhone("13800009999");
-
             int rows = session.insert("com.ssm.mapper.UserMapper.addUser", newUser);
             session.commit();
             System.out.println("\n✅ 组长添加用户成功！行数：" + rows);
 
-            // 1. 修改用户（以ID=11为例，修改刚才添加的组长账号）
+            // 修改用户
             User updateUser = new User();
             updateUser.setId(11);
             updateUser.setUsername("leader_2026");
@@ -48,7 +50,7 @@ public class TestUser {
             session.commit();
             System.out.println("✅ 组长修改用户成功！影响行数：" + updateRows);
 
-// 2. 删除用户（测试用，比如删除ID=11的用户，或其他测试用户）
+            // 删除用户
             int deleteRows = session.delete("com.ssm.mapper.UserMapper.deleteUserById", 11);
             session.commit();
             System.out.println("✅ 组长删除用户成功！影响行数：" + deleteRows);
diff --git a/ffms-MyBatisProject/src/config.xml b/ffms-MyBatisProject/src/config.xml
index 6e6cfec..c563162 100644
--- a/ffms-MyBatisProject/src/config.xml
+++ b/ffms-MyBatisProject/src/config.xml
@@ -4,14 +4,18 @@
         "http://mybatis.org/dtd/mybatis-3-config.dtd">
 
 <configuration>
+    <!-- 1. 引入外部 db.properties 配置文件 -->
+    <properties resource="db.properties"/>
+
     <environments default="development">
         <environment id="development">
             <transactionManager type="JDBC"/>
             <dataSource type="POOLED">
-                <property name="driver" value="com.mysql.cj.jdbc.Driver"/>
-                <property name="url" value="jdbc:mysql://localhost:3306/ssm_ffms1?useSSL=false&amp;serverTimezone=UTC"/>
-                <property name="username" value="root"/>
-                <property name="password" value="123456"/>
+                <!-- 2. 使用 db.properties 中的配置，不再硬编码 -->
+                <property name="driver" value="${driver}"/>
+                <property name="url" value="${url}"/>
+                <property name="username" value="${username}"/>
+                <property name="password" value="${password}"/>
             </dataSource>
         </environment>
     </environments>
@@ -25,9 +29,5 @@
         <mapper resource="com/ssm/mapper/ExpenseMapper.xml"/>
         <!-- 组员C -->
         <mapper resource="com/ssm/mapper/IncomeMapper.xml"/>
-        <!-- 组员D -->
-        <mapper resource="com/ssm/mapper/StockAccountMapper.xml"/>
-
-        <mapper resource="com/ssm/mapper/StockMapper.xml"/>
     </mappers>
 </configuration>
\ No newline at end of file
diff --git a/ffms-MyBatisProject/src/db.properties b/ffms-MyBatisProject/src/db.properties
new file mode 100644
index 0000000..2be0b62
--- /dev/null
+++ b/ffms-MyBatisProject/src/db.properties
@@ -0,0 +1,4 @@
+driver=com.mysql.cj.jdbc.Driver
+url=jdbc:mysql://localhost:3307/ssm_ffms1?serverTimezone=Asia/Shanghai&useSSL=false
+username=root
+password=123456
\ No newline at end of file