完成框架

.idea/encodings.xml

@@ -1,6 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="Encoding">
+    <file url="file://$APPLICATION_HOME_DIR$/src/main/java" charset="UTF-8" />
+    <file url="file://$APPLICATION_HOME_DIR$/src/main/resources" charset="UTF-8" />
     <file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
     <file url="file://$PROJECT_DIR$/src/main/resources" charset="UTF-8" />
   </component>

pom.xml

@@ -1,28 +1,37 @@
+<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
+         http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
+
     <groupId>com.campus</groupId>
     <artifactId>campus-attendance</artifactId>
     <version>1.0-SNAPSHOT</version>
     <packaging>war</packaging>
 
     <properties>
-        <java.version>1.8</java.version>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <spring.version>5.3.30</spring.version>
+        <maven.compiler.source>17</maven.compiler.source>
-        <mybatis.version>3.5.13</mybatis.version>
+        <maven.compiler.target>17</maven.compiler.target>
-        <mysql.version>8.0.33</mysql.version>
+        <spring.version>5.3.23</spring.version>
+        <mybatis.version>3.5.11</mybatis.version>
+        <mybatis.spring.version>2.0.7</mybatis.spring.version> <!-- 修正后的行 -->
     </properties>
 
+
     <dependencies>
-        <!-- Spring MVC -->
+        <!-- Spring -->
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-webmvc</artifactId>
             <version>${spring.version}</version>
         </dependency>
-
-        <!-- Spring JDBC & Transaction -->
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-jdbc</artifactId>
@@ -37,27 +46,20 @@
         </dependency>
         <dependency>
             <groupId>org.mybatis</groupId>
-            <artifactId>mybatis</artifactId>
+            <artifactId>mybatis-spring</artifactId>
-            <version>3.5.2</version>
+            <version>${mybatis.spring.version}</version>
         </dependency>
 
-        <!-- MySQL & Druid 数据库连接池 -->
+        <!-- 数据库 -->
         <dependency>
             <groupId>mysql</groupId>
             <artifactId>mysql-connector-java</artifactId>
-            <version>${mysql.version}</version>
+            <version>8.0.33</version>
         </dependency>
         <dependency>
             <groupId>com.alibaba</groupId>
             <artifactId>druid</artifactId>
-            <version>1.2.16</version>
+            <version>1.2.15</version>
-        </dependency>
-
-        <!-- JSON 处理 -->
-        <dependency>
-            <groupId>com.fasterxml.jackson.core</groupId>
-            <artifactId>jackson-databind</artifactId>
-            <version>2.13.0</version>
         </dependency>
 
         <!-- Servlet API -->
@@ -67,18 +69,54 @@
             <version>4.0.1</version>
             <scope>provided</scope>
         </dependency>
+        <dependency>
+            <groupId>javax.servlet.jsp</groupId>
+            <artifactId>javax.servlet.jsp-api</artifactId>
+            <version>2.3.3</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>jstl</groupId>
+            <artifactId>jstl</artifactId>
+            <version>1.2</version>
+        </dependency>
+
+        <!-- JSON -->
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>2.14.1</version>
+        </dependency>
     </dependencies>
 
     <build>
         <finalName>campus-attendance</finalName>
         <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-war-plugin</artifactId>
+                <version>3.3.2</version>
+            </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.8.1</version>
+                <version>3.10.1</version>
                 <configuration>
-                    <source>${java.version}</source>
+                    <source>1.8</source>
-                    <target>${java.version}</target>
+                    <target>1.8</target>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.10.1</version>
+                <configuration>
+                    <source>17</source>
+                    <target>17</target>
+                    <!-- 新增 JDK 17 编译参数 -->
+                    <compilerArgs>
+                        <arg>--enable-preview</arg>
+                    </compilerArgs>
                 </configuration>
             </plugin>
         </plugins>

src/main/java/com/campus/controller/PageController.java

@@ -0,0 +1,18 @@
+package com.campus.controller;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+
+@Controller
+public class PageController {
+
+    @GetMapping("/")
+    public String index() {
+        return "index";
+    }
+
+    @GetMapping("/students")
+    public String studentList() {
+        return "student_list";
+    }
+}

src/main/java/com/campus/mapper/StudentMapper.xml

@@ -1,10 +0,0 @@
-<!-- StudentMapper.xml -->
-<mapper namespace="com.campus.mapper.StudentMapper">
-    <select id="selectAll" resultType="com.campus.entity.Student">
-        SELECT * FROM student
-    </select>
-    <insert id="insert" parameterType="com.campus.entity.Student">
-        INSERT INTO student(name, student_id, class, major)
-        VALUES(#{name}, #{studentId}, #{class_}, #{major})
-    </insert>
-</mapper>

src/main/resources/applicationContext.xml

@@ -19,17 +19,24 @@
         <property name="url" value="${jdbc.url}"/>
         <property name="username" value="${jdbc.username}"/>
         <property name="password" value="${jdbc.password}"/>
+        <!-- 添加连接池基本配置 -->
+        <property name="initialSize" value="5"/>
+        <property name="minIdle" value="5"/>
+        <property name="maxActive" value="20"/>
     </bean>
 
     <!-- MyBatis 会话工厂 -->
     <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
         <property name="dataSource" ref="dataSource"/>
         <property name="configLocation" value="classpath:mybatis-config.xml"/>
+        <!-- 添加映射文件配置 -->
+        <property name="mapperLocations" value="classpath:mapper/*.xml"/>
     </bean>
 
     <!-- Mapper 扫描 -->
     <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
         <property name="basePackage" value="com.campus.mapper"/>
+        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
     </bean>
 
     <!-- 事务管理 -->

src/main/resources/mapper/StudentMapper.xml

@@ -0,0 +1,22 @@
+<?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.campus.mapper.StudentMapper">
+    <select id="selectAll" resultType="com.campus.entity.Student">
+        SELECT * FROM student
+    </select>
+    <!-- 修改 insert 和 update 语句中的 class 字段 -->
+    <insert id="insert" parameterType="com.campus.entity.Student">
+        INSERT INTO student(name, student_id, `class`, major)  <!-- 新增反引号 -->
+        VALUES(#{name}, #{studentId}, #{class_}, #{major})
+    </insert>
+    <update id="update" parameterType="com.campus.entity.Student">
+        UPDATE student
+        SET name = #{name}, student_id = #{studentId}, `class` = #{class_}, major = #{major}  <!-- 新增反引号 -->
+        WHERE id = #{id}
+    </update>
+    <delete id="delete" parameterType="java.lang.Integer">
+        DELETE FROM student WHERE id = #{id}
+    </delete>
+</mapper>

src/main/resources/spring-mvc.xml

@@ -13,8 +13,6 @@
     <!-- 扫描 Controller -->
     <context:component-scan base-package="com.campus.controller"/>
 
-    <!-- 开启 MVC 注解支持 -->
-    <mvc:annotation-driven/>
 
     <!-- 视图解析器 -->
     <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
@@ -24,4 +22,9 @@
 
     <!-- 静态资源处理 -->
     <mvc:default-servlet-handler/>
+    <mvc:annotation-driven>
+        <mvc:message-converters>
+            <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"/>
+        </mvc:message-converters>
+    </mvc:annotation-driven>
 </beans>

src/main/webapp/WEB-INF/jsp/index.jsp

@@ -0,0 +1,17 @@
+<%--
+  Created by IntelliJ IDEA.
+  User: LY
+  Date: 2025/12/3
+  Time: 14:40
+  To change this template use File | Settings | File Templates.
+--%>
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<html>
+<head>
+    <title>首页</title>
+</head>
+<body>
+<h1>学生考勤系统</h1>
+<a href="/students">学生列表</a>
+</body>
+</html>

src/main/webapp/WEB-INF/jsp/student_list.jsp

@@ -6,6 +6,7 @@
     <script src="https://cdn.jsdelivr.net/npm/jquery@3.6.0/dist/jquery.min.js"></script>
 </head>
 <body>
+<h2>学生列表</h2>
 <table border="1">
     <tr>
         <th>姓名</th>
@@ -23,7 +24,7 @@
                 html += `<tr>
                         <td>${s.name}</td>
                         <td>${s.studentId}</td>
-                        <td>${s.class}</td>
+                        <td>${s.class_}</td>  <!-- 注意这里是class_ -->
                         <td>${s.major}</td>
                     </tr>`;
             });