feat:修改学生相关，完善代码

pom.xml

@@ -0,0 +1,146 @@
+<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>3.3.3</version>
+        <relativePath/>
+    </parent>
+    <groupId>com.example</groupId>
+    <artifactId>attendance</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>attendance</name>
+    <description>attendance</description>
+
+    <properties>
+        <java.version>17</java.version>
+    </properties>
+
+    <dependencies>
+        <!-- Spring Boot Starter JDBC -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-jdbc</artifactId>
+        </dependency>
+
+        <!-- Spring Boot Starter Web -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <!-- MyBatis Starter -->
+        <dependency>
+            <groupId>org.mybatis.spring.boot</groupId>
+            <artifactId>mybatis-spring-boot-starter</artifactId>
+            <version>3.0.3</version>
+        </dependency>
+
+        <!-- Spring Boot DevTools -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-devtools</artifactId>
+            <scope>runtime</scope>
+            <optional>true</optional>
+        </dependency>
+
+        <!-- MySQL Connector -->
+        <dependency>
+            <groupId>com.mysql</groupId>
+            <artifactId>mysql-connector-j</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+
+        <!-- Lombok -->
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <optional>true</optional>
+        </dependency>
+
+        <!-- Spring Boot Starter Test -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <!-- MyBatis Starter Test -->
+        <dependency>
+            <groupId>org.mybatis.spring.boot</groupId>
+            <artifactId>mybatis-spring-boot-starter-test</artifactId>
+            <version>3.0.3</version>
+            <scope>test</scope>
+        </dependency>
+
+        <!-- EasyExcel -->
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>easyexcel</artifactId>
+            <version>3.0.5</version>
+        </dependency>
+
+        <!-- Spring Security for password encryption -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-security</artifactId>
+        </dependency>
+
+        <!-- JWT Library -->
+        <dependency>
+            <groupId>io.jsonwebtoken</groupId>
+            <artifactId>jjwt-api</artifactId>
+            <version>0.11.5</version>
+        </dependency>
+
+        <dependency>
+            <groupId>io.jsonwebtoken</groupId>
+            <artifactId>jjwt-impl</artifactId>
+            <version>0.11.5</version>
+            <scope>runtime</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>io.jsonwebtoken</groupId>
+            <artifactId>jjwt-jackson</artifactId>
+            <version>0.11.5</version>
+            <scope>runtime</scope>
+        </dependency>
+
+        <!-- BCrypt for password hashing -->
+        <dependency>
+            <groupId>org.springframework.security</groupId>
+            <artifactId>spring-security-crypto</artifactId>
+        </dependency>
+
+    </dependencies>
+
+    <build>
+        <plugins>
+            <!-- Compiler Plugin -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.8.1</version>
+                <configuration>
+                    <release>17</release> <!-- 设置 release 参数来简化配置 -->
+                </configuration>
+            </plugin>
+
+            <!-- Spring Boot Maven Plugin -->
+            <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>

src/main/java/com/example/attendance/config/SecurityConfig.java

@@ -0,0 +1,33 @@
+package com.example.attendance.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.security.web.SecurityFilterChain;
+
+@Configuration
+@EnableWebSecurity
+public class SecurityConfig {
+    @Bean
+    public PasswordEncoder passwordEncoder() {
+        return new BCryptPasswordEncoder();
+    }
+    @Bean
+    public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
+        http
+                .csrf(csrf -> csrf.disable()) // 关闭 CSRF 保护（适用于测试，生产环境中请谨慎处理）
+                .authorizeHttpRequests(authz -> authz
+                        .requestMatchers("/api/teacher/register", "/api/teacher/login").permitAll() // 允许注册和登录接口匿名访问
+                        .anyRequest().authenticated() // 其他请求需要认证
+                )
+                .formLogin(form -> form.disable()) // 关闭表单登录（如有需要可以调整）
+                .httpBasic(httpBasic -> httpBasic.disable()); // 关闭基本认证（如有需要可以调整）
+
+        return http.build();
+    }
+
+
+}

src/main/java/com/example/attendance/controller/RollCallController.java

@@ -0,0 +1,24 @@
+package com.example.attendance.controller;
+
+import com.example.attendance.entity.RollCallResponse;
+import com.example.attendance.entity.RollCallSettings;
+import com.example.attendance.entity.Student;
+import com.example.attendance.service.RollCallService;
+import org.springframework.web.bind.annotation.*;
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/rollcall")
+public class RollCallController {
+
+    private final RollCallService rollCallService;
+
+    public RollCallController(RollCallService rollCallService) {
+        this.rollCallService = rollCallService;
+    }
+
+    @PostMapping("/start")
+    public RollCallResponse startRollCall(@RequestBody List<Student> students, @RequestBody RollCallSettings settings) {
+        return rollCallService.startRollCall(students, settings);
+    }
+}

src/main/java/com/example/attendance/controller/StudentController.java

@@ -1,5 +1,6 @@
 package com.example.attendance.controller;
 
+import com.example.attendance.entity.PointsRequest;
 import com.example.attendance.entity.Student;
 import com.example.attendance.service.StudentService;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -16,35 +17,71 @@ public class StudentController {
     @Autowired
     private StudentService studentService;
 
-    @GetMapping("/")
+    @GetMapping("/{id}")
+    public ResponseEntity<Student> getStudentById(@PathVariable Long id) {
+        Student student = studentService.findById(id);
+        return ResponseEntity.ok(student);
+    }
+
+    @GetMapping("/studentNumber/{studentNumber}")
+    public ResponseEntity<Student> getStudentByStudentNumber(@PathVariable String studentNumber) {
+        Student student = studentService.findByStudentNumber(studentNumber);
+        return ResponseEntity.ok(student);
+    }
+
+    @GetMapping
     public ResponseEntity<List<Student>> getAllStudents() {
-        List<Student> students = studentService.getAllStudents();
+        List<Student> students = studentService.findAll();
         return ResponseEntity.ok(students);
     }
 
-    @GetMapping("/{id}")
+    @PostMapping
-    public ResponseEntity<Student> getStudent(@PathVariable Long id) {
+    public ResponseEntity<String> addStudent(@RequestBody Student student) {
-        Student student = studentService.getStudentById(id);
+        studentService.save(student);
-        if (student != null) {
+        return ResponseEntity.ok("Student added successfully");
-            return ResponseEntity.ok(student);
-        } else {
-            return ResponseEntity.notFound().build();
-        }
     }
 
-    @PostMapping("/")
+    @PutMapping("/{studentNumber}")
-    public ResponseEntity<Student> addStudent(@RequestBody Student student) {
+    public ResponseEntity<String> updateStudent(@PathVariable String studentNumber, @RequestBody Student student) {
-        studentService.addStudent(student);
+        student.setStudentNumber(studentNumber);
-        return ResponseEntity.ok(student);
+        studentService.update(student);
+        return ResponseEntity.ok("Student updated successfully");
     }
 
-    @PutMapping("/{id}")
+    @DeleteMapping("/{id}")
-    public ResponseEntity<Student> updateStudentPoints(@PathVariable Long id, @RequestParam int points) {
+    public ResponseEntity<String> deleteStudent(@PathVariable Long id) {
-        studentService.updateStudentPoints(id, points);
+        studentService.delete(id);
-        Student updatedStudent = studentService.getStudentById(id);
+        return ResponseEntity.ok("Student deleted successfully");
-        return ResponseEntity.ok(updatedStudent);
     }
 
+    /**
+     * 查询学生积分排行榜，按积分从高到低排序，并分页返回
+     * @param page 当前页数
+     * @param size 每页显示的记录数
+     * @return 排行榜分页数据
+     */
+    @GetMapping("/ranking")
+    public ResponseEntity<List<Student>> getStudentRanking(@RequestParam(defaultValue = "0") int page,
+                                                           @RequestParam(defaultValue = "10") int size) {
+        List<Student> ranking = studentService.getStudentRanking(page, size);
+        return ResponseEntity.ok(ranking);
+    }
+
+    /**
+     * 调整学生积分
+     * @param studentNumber 学生编号
+     * @param pointsRequest 包含积分调整值的请求
+     * @return 成功或失败消息
+     */
+    @PutMapping("/{studentNumber}/adjustPoints")
+    public ResponseEntity<String> adjustStudentPoints(@PathVariable String studentNumber, @RequestBody PointsRequest pointsRequest) {
+        try {
+            studentService.adjustPoints(studentNumber, pointsRequest.getPointsDelta());
+            return ResponseEntity.ok("积分调整成功");
+        } catch (Exception e) {
+            return ResponseEntity.status(500).body("积分调整失败：" + e.getMessage());
+        }
+    }
     /**
      * 上传Excel文件并导入学生数据
      * @param file Excel文件
@@ -55,7 +92,6 @@ public class StudentController {
         if (file.isEmpty()) {
             return "请上传有效的Excel文件";
         }
-
         try {
             studentService.importStudents(file);
             return "学生数据导入成功";

src/main/java/com/example/attendance/controller/TeacherController.java

@@ -0,0 +1,34 @@
+package com.example.attendance.controller;
+
+import com.example.attendance.service.TeacherService;
+import com.example.attendance.service.impl.TeacherServiceImpl;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+@RestController
+@RequestMapping("/api/teacher")
+public class TeacherController {
+
+    @Autowired
+    private TeacherService teacherService;
+
+    @PostMapping("/register")
+    public ResponseEntity<String> register(@RequestParam String username, @RequestParam String password) {
+        try {
+            teacherService.register(username, password);
+            return ResponseEntity.ok("注册成功");  // 成功时返回 200 状态和消息
+        } catch (Exception e) {
+            return ResponseEntity.badRequest().body("注册失败: " + e.getMessage());  // 失败时返回 400 状态和错误信息
+        }
+    }
+
+    @PostMapping("/login")
+    public ResponseEntity<String> login(@RequestParam String username, @RequestParam String password) {
+        try {
+            String token = teacherService.login(username, password);
+            return ResponseEntity.ok("登录成功, Token: " + token);  // 成功时返回 200 状态和 JWT token
+        } catch (Exception e) {
+            return ResponseEntity.badRequest().body("登录失败: " + e.getMessage());  // 失败时返回 400 状态和错误信息
+        }
+    }
+}

src/main/java/com/example/attendance/entity/PointsRequest.java

@@ -0,0 +1,15 @@
+package com.example.attendance.entity;
+
+import java.math.BigDecimal;
+
+public class PointsRequest {
+    private BigDecimal pointsDelta;
+
+    public BigDecimal getPointsDelta() {
+        return pointsDelta;
+    }
+
+    public void setPointsDelta(BigDecimal pointsDelta) {
+        this.pointsDelta = pointsDelta;
+    }
+}

src/main/java/com/example/attendance/entity/RollCallResponse.java

@@ -1,13 +1,18 @@
-package com.example.attendance.dto;
+package com.example.attendance.entity;
 
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.NoArgsConstructor;
 
-@Data
+import java.math.BigDecimal;
-@AllArgsConstructor
+
 @NoArgsConstructor
-public class StudentExcelDTO {
+@AllArgsConstructor
-    private String name;
+@Data
+public class RollCallResponse {
     private String studentId;
+    private String name;
+    private BigDecimal points;
+    private String message; // 显示结果信息
+
 }

src/main/java/com/example/attendance/entity/RollCallSettings.java

@@ -0,0 +1,15 @@
+package com.example.attendance.entity;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@NoArgsConstructor
+@AllArgsConstructor
+@Data
+public class RollCallSettings {
+    private boolean isRollCall; // 点名(true)或提问(false)
+    private boolean triggerRandomEvent; // 是否触发随机事件
+    private boolean wheelOfFortune; // 是否开启命运轮盘
+
+}

src/main/java/com/example/attendance/entity/Student.java

@@ -1,20 +1,43 @@
 package com.example.attendance.entity;
 
+import java.math.BigDecimal;
 
-import lombok.AllArgsConstructor;
-import lombok.Data;
-import lombok.NoArgsConstructor;
-// TODO：更新数据库表结构
-@NoArgsConstructor
-@AllArgsConstructor
-@Data
 public class Student {
     private Long id;
-    private String name;
+    private String studentNumber; // 学号
-    private int initialPoints = 0;
+    private String name;          // 姓名
-    private int currentPoints = 0;
+    private BigDecimal points;       // 积分
-    private int correctAnswerStreak;  // 连续答对次数
+
-    private boolean skipNextCall;  // 是否跳过下次点名
+    // getters and setters
-    private boolean borrowingPoints;  // 是否借用积分
+    public Long getId() {
-    private boolean increasedCallChance;  // 点名概率是否增加
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getStudentNumber() {
+        return studentNumber;
+    }
+
+    public void setStudentNumber(String studentNumber) {
+        this.studentNumber = studentNumber;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public BigDecimal getPoints() {
+        return points;
+    }
+
+    public void setPoints(BigDecimal points) {
+        this.points = points;
+    }
 }

src/main/java/com/example/attendance/entity/Teacher.java

@@ -1,14 +1,15 @@
-package com.example.attendance.dto;
+package com.example.attendance.entity;
 
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.NoArgsConstructor;
 
-@Data
-@AllArgsConstructor
 @NoArgsConstructor
-public class StudentDTO {
+@AllArgsConstructor
+@Data
+public class Teacher {
     private Long id;
-    private String name;
+    private String username;
-    private int currentPoints;
+    private String password;
+
 }

src/main/java/com/example/attendance/listener/StudentExcelListener.java

@@ -1,29 +0,0 @@
-package com.example.attendance.listener;
-
-import com.alibaba.excel.context.AnalysisContext;
-import com.alibaba.excel.event.AnalysisEventListener;
-import com.example.attendance.dto.StudentExcelDTO;
-import com.example.attendance.entity.Student;
-import com.example.attendance.mapper.StudentMapper;
-
-public class StudentExcelListener extends AnalysisEventListener<StudentExcelDTO> {
-    private final StudentMapper studentMapper;
-
-    public StudentExcelListener(StudentMapper studentMapper) {
-        this.studentMapper = studentMapper;
-    }
-
-    @Override
-    public void invoke(StudentExcelDTO data, AnalysisContext context) {
-        Student student = new Student();
-        student.setName(data.getName());
-        student.setId(Long.valueOf(data.getStudentId()));
-        student.setCurrentPoints(0);  // 初始积分为0
-        studentMapper.insertStudent(student);
-    }
-
-    @Override
-    public void doAfterAllAnalysed(AnalysisContext context) {
-        // 处理完成后的操作
-    }
-}

src/main/java/com/example/attendance/mapper/StudentMapper.java

@@ -3,20 +3,47 @@ package com.example.attendance.mapper;
 import com.example.attendance.entity.Student;
 import org.apache.ibatis.annotations.*;
 
+import java.math.BigDecimal;
 import java.util.List;
 
 @Mapper
 public interface StudentMapper {
 
-    @Select("SELECT * FROM students WHERE id = #{id}")
+    @Select("SELECT * FROM student WHERE id = #{id}")
-    Student getStudentById(Long id);
+    Student findById(Long id);
 
-    @Select("SELECT * FROM students")
+    @Select("SELECT * FROM student WHERE student_number = #{studentNumber}")
-    List<Student> getAllStudents();
+    Student findByStudentNumber(String studentNumber);
 
-    @Insert("INSERT INTO students(name, initialPoints, currentPoints) VALUES(#{name}, #{initialPoints}, #{currentPoints})")
+    @Select("SELECT * FROM student")
-    void insertStudent(Student student);
+    List<Student> findAll();
 
-    @Update("UPDATE students SET currentPoints = #{currentPoints} WHERE id = #{id}")
+    @Insert("INSERT INTO student (student_number, name, points) VALUES (#{studentNumber}, #{name}, #{points})")
-    void updateStudentPoints(@Param("id") Long id, @Param("currentPoints") int currentPoints);
+    @Options(useGeneratedKeys = true, keyProperty = "id")
+    void save(Student student);
+
+    @Update("UPDATE student SET name = #{name}, points = #{points} WHERE student_number = #{studentNumber}")
+    void update(Student student);
+
+    @Delete("DELETE FROM student WHERE id = #{id}")
+    void delete(Long id);
+
+    @Insert({
+            "<script>",
+            "INSERT INTO student (student_number, name, points) VALUES ",
+            "<foreach collection='students' item='student' separator=','>",
+            "(#{student.studentNumber}, #{student.name}, #{student.points})",
+            "</foreach>",
+            "</script>"
+    })
+    void saveStudents(List<Student> students);
+
+    /**
+     * 按积分从高到低排序的分页查询
+     * @param offset 分页查询的偏移量
+     * @param size 每页显示的记录数
+     * @return 排行榜学生列表
+     */
+    @Select("SELECT * FROM student ORDER BY points DESC LIMIT #{size} OFFSET #{offset}")
+    List<Student> findStudentsByRanking(@Param("offset") int offset, @Param("size") int size);
 }

src/main/java/com/example/attendance/mapper/TeacherMapper.java

@@ -0,0 +1,15 @@
+package com.example.attendance.mapper;
+
+import com.example.attendance.entity.Teacher;
+import org.apache.ibatis.annotations.Insert;
+import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Select;
+@Mapper
+public interface TeacherMapper {
+
+    @Insert("INSERT INTO teacher (username, password) VALUES (#{username}, #{password})")
+    void save(Teacher teacher);
+
+    @Select("SELECT * FROM teacher WHERE username = #{username}")
+    Teacher findByUsername(String username);
+}

src/main/java/com/example/attendance/service/RollCallService.java

@@ -0,0 +1,10 @@
+package com.example.attendance.service;
+import com.example.attendance.entity.RollCallResponse;
+import com.example.attendance.entity.RollCallSettings;
+import com.example.attendance.entity.Student;
+
+import java.util.List;
+
+public interface RollCallService {
+    RollCallResponse startRollCall(List<Student> students, RollCallSettings settings); // 处理点名逻辑
+}

src/main/java/com/example/attendance/service/StudentService.java

@@ -1,15 +1,20 @@
 package com.example.attendance.service;
 
-import com.example.attendance.dto.StudentExcelDTO;
 import com.example.attendance.entity.Student;
 import org.springframework.web.multipart.MultipartFile;
 
+import java.math.BigDecimal;
 import java.util.List;
 
 public interface StudentService {
-    void importStudents(MultipartFile file);
+    void importStudents(MultipartFile file) throws Exception ;
-    List<Student> getAllStudents();
+    void adjustPoints(String studentNumber, BigDecimal pointsDelta);
-    Student getStudentById(Long id);
+    List<Student> getStudentRanking(int page, int size);
-    void addStudent(Student student);
+    Student findById(Long id);
-    void updateStudentPoints(Long id, int points);
+    Student findByStudentNumber(String studentNumber);
+    List<Student> findAll();
+    void save(Student student);
+    void update(Student student);
+    void delete(Long id);
+
 }

src/main/java/com/example/attendance/service/TeacherService.java

@@ -0,0 +1,23 @@
+package com.example.attendance.service;
+
+public interface TeacherService {
+
+    /**
+     * 注册新教师
+     *
+     * @param username 教师的用户名
+     * @param password 教师的密码
+     * @throws Exception 注册过程中可能抛出的异常
+     */
+    void register(String username, String password) throws Exception;
+
+    /**
+     * 教师登录
+     *
+     * @param username 教师的用户名
+     * @param password 教师的密码
+     * @return 返回 JWT token
+     * @throws Exception 登录失败时抛出的异常
+     */
+    String login(String username, String password) throws Exception;
+}

src/main/java/com/example/attendance/service/impl/RollCallServiceImpl.java

@@ -0,0 +1,110 @@
+package com.example.attendance.service.impl;
+
+import com.example.attendance.entity.RollCallResponse;
+import com.example.attendance.entity.RollCallSettings;
+import com.example.attendance.entity.Student;
+import com.example.attendance.service.RollCallService;
+import org.springframework.stereotype.Service;
+
+import java.math.BigDecimal;
+import java.util.List;
+import java.util.Random;
+
+@Service
+public class RollCallServiceImpl implements RollCallService {
+
+    @Override
+    public RollCallResponse startRollCall(List<Student> students, RollCallSettings settings) {
+        // 1. 根据设定选择点名或提问模式
+        String mode = settings.isRollCall() ? "点名" : "提问";
+        System.out.println("当前模式：" + mode);
+
+        // 2. 处理命运轮盘 (所有人概率相等)
+        if (settings.isWheelOfFortune()) {
+            return handleWheelOfFortune(students);
+        }
+
+        // 3. 正常点名逻辑，使用权重随机选择学生
+        Student selectedStudent = selectWeightedRandomStudent(students);
+        RollCallResponse response = new RollCallResponse();
+        response.setStudentId(selectedStudent.getStudentNumber());
+        response.setName(selectedStudent.getName());
+        response.setPoints(selectedStudent.getPoints());
+
+        // 4. 判断是否触发随机事件
+        if (settings.isTriggerRandomEvent()) {
+            response.setMessage("触发了随机事件: " + triggerRandomEvent());
+        } else {
+            response.setMessage("没有触发随机事件，" + selectedStudent.getName() + " 被点了！");
+        }
+
+        return response;
+    }
+
+    // 权重随机选择学生，积分越高概率越低
+    private Student selectWeightedRandomStudent(List<Student> students) {
+        Random random = new Random();
+        int totalWeight = 0;
+
+        // 计算所有学生的总权重，假设权重为 100 - currentPoints
+        for (Student student : students) {
+            int weight = 100 - student.getPoints().intValue();
+            if (weight < 1) {
+                weight = 1; // 确保权重最低为1
+            }
+            totalWeight += weight; // 累计总权重
+        }
+
+        // 如果 totalWeight 为 0 或负数，则无法进行随机选择
+        if (totalWeight <= 0) {
+            throw new IllegalArgumentException("总权重必须为正数");
+        }
+
+        // 随机生成一个 0 到 totalWeight 之间的随机数
+        int randomIndex = random.nextInt(totalWeight);
+        int currentWeightSum = 0;
+
+        // 遍历学生列表，根据累计权重确定选中的学生
+        for (Student student : students) {
+            int weight = 100 - student.getPoints().intValue();
+            if (weight < 1) {
+                weight = 1;
+            }
+
+            currentWeightSum += weight;
+            // 当累计权重超过随机数时，选择当前学生
+            if (currentWeightSum > randomIndex) {
+                return student;
+            }
+        }
+
+        // 如果没有选中任何学生，兜底返回第一个学生（理论上不会发生）
+        return students.get(0);
+    }
+
+    // 命运轮盘处理（所有学生概率相等）
+    private RollCallResponse handleWheelOfFortune(List<Student> students) {
+        Random random = new Random();
+        Student selectedStudent = students.get(random.nextInt(students.size()));
+
+        RollCallResponse response = new RollCallResponse();
+        response.setStudentId(selectedStudent.getStudentNumber());
+        response.setName(selectedStudent.getName());
+        response.setPoints(selectedStudent.getPoints());
+        response.setMessage("命运轮盘： " + selectedStudent.getName() + " 被选中了！");
+
+        return response;
+    }
+
+    // 触发随机事件：赌徒事件或倒霉事件
+    private String triggerRandomEvent() {
+        Random random = new Random();
+        int eventType = random.nextInt(2);  // 0表示赌徒事件，1表示倒霉事件
+
+        if (eventType == 0) {
+            return "赌徒事件";  // 触发赌徒事件
+        } else {
+            return "倒霉事件";  // 触发倒霉事件
+        }
+    }
+}

src/main/java/com/example/attendance/service/impl/StudentServiceImpl.java

@@ -1,16 +1,19 @@
 package com.example.attendance.service.impl;
 
-import com.alibaba.excel.EasyExcel;
-import com.example.attendance.dto.StudentExcelDTO;
 import com.example.attendance.entity.Student;
-import com.example.attendance.listener.StudentExcelListener;
 import com.example.attendance.mapper.StudentMapper;
 import com.example.attendance.service.StudentService;
+import org.apache.poi.ss.usermodel.Row;
+import org.apache.poi.ss.usermodel.Sheet;
+import org.apache.poi.ss.usermodel.Workbook;
+import org.apache.poi.xssf.usermodel.XSSFWorkbook;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.web.multipart.MultipartFile;
 
 import java.io.InputStream;
+import java.math.BigDecimal;
+import java.util.ArrayList;
 import java.util.List;
 
 @Service
@@ -20,33 +23,92 @@ public class StudentServiceImpl implements StudentService {
     private StudentMapper studentMapper;
 
     @Override
-    public void importStudents(MultipartFile file) {
+    public void importStudents(MultipartFile file) throws Exception {
-        try (InputStream inputStream = file.getInputStream()) {
+        List<Student> students = new ArrayList<>();
-            EasyExcel.read(inputStream, StudentExcelDTO.class, new StudentExcelListener(studentMapper))
+
-                    .sheet()
+        // 获取上传的 Excel 文件流
-                    .doRead();
+        try (InputStream inputStream = file.getInputStream();
-        } catch (Exception e) {
+             Workbook workbook = new XSSFWorkbook(inputStream)) {
-            throw new RuntimeException("从Excel导入学生数据失败", e);
+
+            // 读取第一个工作表
+            Sheet sheet = workbook.getSheetAt(0);
+
+            // 遍历每一行，从第二行开始（假设第一行是标题）
+            for (int i = 1; i <= sheet.getLastRowNum(); i++) {
+                Row row = sheet.getRow(i);
+                if (row == null) continue;
+
+                // 读取学生数据
+                String studentNumber = row.getCell(0).getStringCellValue();
+                String name = row.getCell(1).getStringCellValue();
+                BigDecimal points = new BigDecimal(row.getCell(2).getNumericCellValue());
+
+                Student student = new Student();
+                student.setStudentNumber(studentNumber);
+                student.setName(name);
+                student.setPoints(points);
+
+                students.add(student);
+            }
+        }
+
+        // 将学生列表保存到数据库
+        studentMapper.saveStudents(students);
+    }
+
+    /**
+     * 调整指定学生的积分
+     * @param studentNumber 学生编号
+     * @param pointsDelta 要加或减的积分值
+     */
+    public void adjustPoints(String studentNumber, BigDecimal pointsDelta) {
+        Student student = studentMapper.findByStudentNumber(studentNumber);
+        if (student == null) {
+            throw new RuntimeException("未找到该学生");
         }
+        BigDecimal updatedPoints = student.getPoints().add(pointsDelta);
+        student.setPoints(updatedPoints);
+        studentMapper.update(student);
+    }
+
+    /**
+     * 获取学生积分排行榜，按积分从高到低排序，并进行分页
+     * @param page 当前页数
+     * @param size 每页显示的记录数
+     * @return 学生排行榜
+     */
+    public List<Student> getStudentRanking(int page, int size) {
+        int offset = page * size;
+        return studentMapper.findStudentsByRanking(offset, size);
+    }
+
+    @Override
+    public Student findById(Long id) {
+        return studentMapper.findById(id);
+    }
+
+    @Override
+    public Student findByStudentNumber(String studentNumber) {
+        return studentMapper.findByStudentNumber(studentNumber);
     }
 
     @Override
-    public List<Student> getAllStudents() {
+    public List<Student> findAll() {
-        return studentMapper.getAllStudents();
+        return studentMapper.findAll();
     }
 
     @Override
-    public Student getStudentById(Long id) {
+    public void save(Student student) {
-        return studentMapper.getStudentById(id);
+        studentMapper.save(student);
     }
 
     @Override
-    public void addStudent(Student student) {
+    public void update(Student student) {
-        studentMapper.insertStudent(student);
+        studentMapper.update(student);
     }
 
     @Override
-    public void updateStudentPoints(Long id, int points) {
+    public void delete(Long id) {
-        studentMapper.updateStudentPoints(id, points);
+        studentMapper.delete(id);
     }
 }

src/main/java/com/example/attendance/service/impl/TeacherServiceImpl.java

@@ -0,0 +1,37 @@
+package com.example.attendance.service.impl;
+
+import com.example.attendance.mapper.TeacherMapper;
+import com.example.attendance.entity.Teacher;
+import com.example.attendance.service.TeacherService;
+import com.example.attendance.util.JWTUtil;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.stereotype.Service;
+
+@Service
+public class TeacherServiceImpl implements TeacherService {
+
+    @Autowired
+    private TeacherMapper teacherMapper;
+
+    @Autowired
+    private PasswordEncoder passwordEncoder; // 使用 PasswordEncoder 接口
+
+    @Override
+    public void register(String username, String password) {
+        Teacher teacher = new Teacher();
+        teacher.setUsername(username);
+        teacher.setPassword(passwordEncoder.encode(password));  // 密码加密
+        teacherMapper.save(teacher);
+    }
+
+    @Override
+    public String login(String username, String password) {
+        Teacher teacher = teacherMapper.findByUsername(username);
+        if (teacher == null || !passwordEncoder.matches(password, teacher.getPassword())) {
+            throw new RuntimeException("用户名或密码不正确");
+        }
+        // 返回 JWT token
+        return JWTUtil.generateToken(teacher);
+    }
+}

src/main/java/com/example/attendance/util/JWTUtil.java

@@ -0,0 +1,43 @@
+package com.example.attendance.util;
+
+import com.example.attendance.entity.Teacher;
+import io.jsonwebtoken.Claims;
+import io.jsonwebtoken.Jwts;
+import io.jsonwebtoken.SignatureAlgorithm;
+import io.jsonwebtoken.security.Keys;
+
+import javax.crypto.SecretKey;
+import java.util.Date;
+
+public class JWTUtil {
+
+    private static final SecretKey SECRET_KEY = Keys.secretKeyFor(SignatureAlgorithm.HS256);
+
+    public static String generateToken(Teacher teacher) {
+        return Jwts.builder()
+                .setSubject(teacher.getUsername())
+                .setIssuedAt(new Date())
+                .setExpiration(new Date(System.currentTimeMillis() + 60 * 60 * 1000))  // Token 有效期 1 小时
+                .signWith(SignatureAlgorithm.HS256, SECRET_KEY)
+                .compact();
+    }
+
+    public static Claims extractClaims(String token) {
+        try {
+            return Jwts.parser()
+                    .setSigningKey(SECRET_KEY)
+                    .parseClaimsJws(token)
+                    .getBody();
+        } catch (Exception e) {
+            throw new RuntimeException("Invalid JWT token", e); // 捕获并抛出异常
+        }
+    }
+
+    public static String getUsernameFromToken(String token) {
+        return extractClaims(token).getSubject();
+    }
+
+    public static boolean isTokenExpired(String token) {
+        return extractClaims(token).getExpiration().before(new Date());
+    }
+}

src/main/resources/application.properties

@@ -4,4 +4,4 @@ spring.datasource.username=root
 spring.datasource.password=123456789jk
 spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
 
-mybatis.mapper-locations=classpath:mappers/*.xml
+

src/test/java/com/example/attendance/PasswordEncryptor.java

@@ -0,0 +1,24 @@
+package com.example.attendance;
+
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+
+public class PasswordEncryptor {
+    public static void main(String[] args) {
+        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
+        
+        // 这里使用你希望的明文密码
+        String rawPassword1 = "123456";
+        String rawPassword2 = "654321";
+        String rawPassword3 = "admin123";
+
+        // 加密密码
+        String encodedPassword1 = passwordEncoder.encode(rawPassword1);
+        String encodedPassword2 = passwordEncoder.encode(rawPassword2);
+        String encodedPassword3 = passwordEncoder.encode(rawPassword3);
+
+        // 打印加密后的密码
+        System.out.println("teacher1 密码: " + encodedPassword1);
+        System.out.println("teacher2 密码: " + encodedPassword2);
+        System.out.println("teacher3 密码: " + encodedPassword3);
+    }
+}