第一次提交

.gitignore

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+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

.idea/.gitignore

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+# 默认忽略的文件
+/shelf/
+/workspace.xml
+# 基于编辑器的 HTTP 客户端请求
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

.idea/encodings.xml

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

.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="KubernetesApiProvider">{}</component>
+  <component name="MavenProjectsManager">
+    <option name="originalFiles">
+      <list>
+        <option value="$PROJECT_DIR$/pom.xml" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="17" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

.idea/vcs.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

pom.xml

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+<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">
+    <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>
+        <spring.version>5.3.30</spring.version>
+        <mybatis.version>3.5.13</mybatis.version>
+        <mysql.version>8.0.33</mysql.version>
+    </properties>
+
+    <dependencies>
+        <!-- Spring MVC -->
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-webmvc</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
+
+        <!-- Spring JDBC & Transaction -->
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-jdbc</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
+
+        <!-- MyBatis -->
+        <dependency>
+            <groupId>org.mybatis</groupId>
+            <artifactId>mybatis</artifactId>
+            <version>${mybatis.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.mybatis</groupId>
+            <artifactId>mybatis-spring</artifactId>
+            <version>2.0.9</version>
+        </dependency>
+
+        <!-- MySQL & Druid 数据库连接池 -->
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <version>${mysql.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>druid</artifactId>
+            <version>1.2.16</version>
+        </dependency>
+
+        <!-- JSON 处理 -->
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>2.13.0</version>
+        </dependency>
+
+        <!-- Servlet API -->
+        <dependency>
+            <groupId>javax.servlet</groupId>
+            <artifactId>javax.servlet-api</artifactId>
+            <version>4.0.1</version>
+            <scope>provided</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <finalName>campus-attendance</finalName>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.8.1</version>
+                <configuration>
+                    <source>${java.version}</source>
+                    <target>${java.version}</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+</project>

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

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+package com.campus.controller;
+
+import com.campus.entity.Student;
+import com.campus.service.StudentService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+// StudentController.java
+@RestController
+@RequestMapping("/student")
+public class StudentController {
+    @Autowired
+    private StudentService studentService;
+
+    @GetMapping("/list")
+    public List<Student> list() {
+        return studentService.listAll();
+    }
+
+    @PostMapping("/add")
+    public String add(@RequestBody Student student) {
+        studentService.add(student);
+        return "success";
+    }
+}

src/main/java/com/campus/entity/Student.java

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+package com.campus.entity;
+
+public class Student {
+    private Integer id;
+    private String name;
+    private String studentId;
+    private String class_;
+    private String major;
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getClass_() {
+        return class_;
+    }
+
+    public void setClass_(String class_) {
+        this.class_ = class_;
+    }
+
+    public String getStudentId() {
+        return studentId;
+    }
+
+    public void setStudentId(String studentId) {
+        this.studentId = studentId;
+    }
+
+    public String getMajor() {
+        return major;
+    }
+
+    public void setMajor(String major) {
+        this.major = major;
+    }
+}

src/main/java/com/campus/entity/User.java

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+package com.campus.entity;
+
+// User.java
+public class User {
+    private Integer id;
+    private String username;
+    private String password;
+    private String role; // ADMIN/TEACHER/STUDENT
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public String getRole() {
+        return role;
+    }
+
+    public void setRole(String role) {
+        this.role = role;
+    }
+}

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

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+package com.campus.mapper;
+
+import com.campus.entity.Student;
+import org.apache.ibatis.annotations.Mapper;
+
+import java.util.List;
+
+@Mapper
+public interface StudentMapper {
+    List<Student> selectAll();
+    void insert(Student student);
+    void update(Student student);
+    void delete(Integer id);
+}

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

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+<!-- 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/java/com/campus/service/StudentService.java

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+package com.campus.service;
+
+import com.campus.entity.Student;
+import com.campus.mapper.StudentMapper;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+// StudentService.java
+@Service
+public class StudentService {
+    @Autowired
+    private StudentMapper studentMapper;
+
+    public List<Student> listAll() {
+        return studentMapper.selectAll();
+    }
+
+    public void add(Student student) {
+        studentMapper.insert(student);
+    }
+}

src/main/resources/applicationContext.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xmlns:context="http://www.springframework.org/schema/context"
+       xmlns:tx="http://www.springframework.org/schema/tx"
+       xsi:schemaLocation="http://www.springframework.org/schema/beans
+           http://www.springframework.org/schema/beans/spring-beans.xsd
+           http://www.springframework.org/schema/context
+           http://www.springframework.org/schema/context/spring-context.xsd
+           http://www.springframework.org/schema/tx
+           http://www.springframework.org/schema/tx/spring-tx.xsd">
+
+    <!-- 加载数据库配置 -->
+    <context:property-placeholder location="classpath:jdbc.properties"/>
+
+    <!-- 数据库连接池 -->
+    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close">
+        <property name="driverClassName" value="${jdbc.driver}"/>
+        <property name="url" value="${jdbc.url}"/>
+        <property name="username" value="${jdbc.username}"/>
+        <property name="password" value="${jdbc.password}"/>
+    </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"/>
+    </bean>
+
+    <!-- Mapper 扫描 -->
+    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
+        <property name="basePackage" value="com.campus.mapper"/>
+    </bean>
+
+    <!-- 事务管理 -->
+    <tx:annotation-driven transaction-manager="transactionManager"/>
+    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
+        <property name="dataSource" ref="dataSource"/>
+    </bean>
+
+    <!-- 自动扫描 Service -->
+    <context:component-scan base-package="com.campus.service"/>
+</beans>

src/main/resources/jdbc.properties

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+jdbc.driver=com.mysql.cj.jdbc.Driver
+jdbc.url=jdbc:mysql://localhost:3306/campus_attendance?useSSL=false&serverTimezone=UTC
+jdbc.username=root
+jdbc.password=123456

src/main/resources/mybatis-config.xml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE configuration
+        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-config.dtd">
+<configuration>
+    <settings>
+        <setting name="mapUnderscoreToCamelCase" value="true"/>
+    </settings>
+</configuration>

src/main/resources/spring-mvc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+       xmlns:mvc="http://www.springframework.org/schema/mvc"
+       xmlns:context="http://www.springframework.org/schema/context"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xsi:schemaLocation="http://www.springframework.org/schema/beans
+           http://www.springframework.org/schema/beans/spring-beans.xsd
+           http://www.springframework.org/schema/mvc
+           http://www.springframework.org/schema/mvc/spring-mvc.xsd
+           http://www.springframework.org/schema/context
+           http://www.springframework.org/schema/context/spring-context.xsd">
+
+    <!-- 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">
+        <property name="prefix" value="/WEB-INF/jsp/"/>
+        <property name="suffix" value=".jsp"/>
+    </bean>
+
+    <!-- 静态资源处理 -->
+    <mvc:default-servlet-handler/>
+</beans>

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

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+<!-- student_list.jsp -->
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<html>
+<head>
+    <title>学生管理</title>
+    <script src="https://cdn.jsdelivr.net/npm/jquery@3.6.0/dist/jquery.min.js"></script>
+</head>
+<body>
+<table border="1">
+    <tr>
+        <th>姓名</th>
+        <th>学号</th>
+        <th>班级</th>
+        <th>专业</th>
+    </tr>
+    <tbody id="studentTable"></tbody>
+</table>
+<script>
+    $(function() {
+        $.get("/student/list", function(data) {
+            let html = '';
+            data.forEach(s => {
+                html += `<tr>
+                        <td>${s.name}</td>
+                        <td>${s.studentId}</td>
+                        <td>${s.class}</td>
+                        <td>${s.major}</td>
+                    </tr>`;
+            });
+            $("#studentTable").html(html);
+        });
+    });
+</script>
+</body>
+</html>

src/main/webapp/WEB-INF/web.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
+         version="4.0">
+
+    <!-- Spring 配置 -->
+    <context-param>
+        <param-name>contextConfigLocation</param-name>
+        <param-value>classpath:applicationContext.xml</param-value>
+    </context-param>
+    <listener>
+        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
+    </listener>
+
+    <!-- Spring MVC 前端控制器 -->
+    <servlet>
+        <servlet-name>dispatcher</servlet-name>
+        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
+        <init-param>
+            <param-name>contextConfigLocation</param-name>
+            <param-value>classpath:spring-mvc.xml</param-value>
+        </init-param>
+        <load-on-startup>1</load-on-startup>
+    </servlet>
+    <servlet-mapping>
+        <servlet-name>dispatcher</servlet-name>
+        <url-pattern>/</url-pattern>
+    </servlet-mapping>
+</web-app>

src/main/webapp/index.jsp

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+<html>
+<body>
+<h2>Hello World!</h2>
+</body>
+</html>