feat:学生相关的部分

src/main/java/com/example/attendance/AttendanceApplication.java

@@ -0,0 +1,13 @@
+package com.example.attendance;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class AttendanceApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(AttendanceApplication.class, args);
+    }
+
+}

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

@@ -0,0 +1,66 @@
+package com.example.attendance.controller;
+
+import com.example.attendance.entity.Student;
+import com.example.attendance.service.StudentService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/students")
+public class StudentController {
+
+    @Autowired
+    private StudentService studentService;
+
+    @GetMapping("/")
+    public ResponseEntity<List<Student>> getAllStudents() {
+        List<Student> students = studentService.getAllStudents();
+        return ResponseEntity.ok(students);
+    }
+
+    @GetMapping("/{id}")
+    public ResponseEntity<Student> getStudent(@PathVariable Long id) {
+        Student student = studentService.getStudentById(id);
+        if (student != null) {
+            return ResponseEntity.ok(student);
+        } else {
+            return ResponseEntity.notFound().build();
+        }
+    }
+
+    @PostMapping("/")
+    public ResponseEntity<Student> addStudent(@RequestBody Student student) {
+        studentService.addStudent(student);
+        return ResponseEntity.ok(student);
+    }
+
+    @PutMapping("/{id}")
+    public ResponseEntity<Student> updateStudentPoints(@PathVariable Long id, @RequestParam int points) {
+        studentService.updateStudentPoints(id, points);
+        Student updatedStudent = studentService.getStudentById(id);
+        return ResponseEntity.ok(updatedStudent);
+    }
+
+    /**
+     * 上传Excel文件并导入学生数据
+     * @param file Excel文件
+     * @return 导入结果
+     */
+    @PostMapping("/import")
+    public String importStudents(@RequestParam("file") MultipartFile file) {
+        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";
+        } catch (Exception e) {
+            return "学生数据导入失败：" + e.getMessage();
+        }
+    }
+}

src/main/java/com/example/attendance/dto/StudentDTO.java

@@ -0,0 +1,14 @@
+package com.example.attendance.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class StudentDTO {
+    private Long id;
+    private String name;
+    private int currentPoints;
+}

src/main/java/com/example/attendance/dto/StudentExcelDTO.java

@@ -0,0 +1,13 @@
+package com.example.attendance.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class StudentExcelDTO {
+    private String name;
+    private String studentId;
+}

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

@@ -17,4 +17,4 @@ public class Student {
     private boolean skipNextCall;  // 是否跳过下次点名
     private boolean borrowingPoints;  // 是否借用积分
     private boolean increasedCallChance;  // 点名概率是否增加
-}
+}

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

@@ -0,0 +1,22 @@
+package com.example.attendance.mapper;
+
+import com.example.attendance.entity.Student;
+import org.apache.ibatis.annotations.*;
+
+import java.util.List;
+
+@Mapper
+public interface StudentMapper {
+
+    @Select("SELECT * FROM students WHERE id = #{id}")
+    Student getStudentById(Long id);
+
+    @Select("SELECT * FROM students")
+    List<Student> getAllStudents();
+
+    @Insert("INSERT INTO students(name, initialPoints, currentPoints) VALUES(#{name}, #{initialPoints}, #{currentPoints})")
+    void insertStudent(Student student);
+
+    @Update("UPDATE students SET currentPoints = #{currentPoints} WHERE id = #{id}")
+    void updateStudentPoints(@Param("id") Long id, @Param("currentPoints") int currentPoints);
+}

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

@@ -0,0 +1,15 @@
+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.util.List;
+
+public interface StudentService {
+    void importStudents(MultipartFile file);
+    List<Student> getAllStudents();
+    Student getStudentById(Long id);
+    void addStudent(Student student);
+    void updateStudentPoints(Long id, int points);
+}

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

@@ -0,0 +1,52 @@
+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.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.io.InputStream;
+import java.util.List;
+
+@Service
+public class StudentServiceImpl implements StudentService {
+
+    @Autowired
+    private StudentMapper studentMapper;
+
+    @Override
+    public void importStudents(MultipartFile file) {
+        try (InputStream inputStream = file.getInputStream()) {
+            EasyExcel.read(inputStream, StudentExcelDTO.class, new StudentExcelListener(studentMapper))
+                    .sheet()
+                    .doRead();
+        } catch (Exception e) {
+            throw new RuntimeException("从Excel导入学生数据失败", e);
+        }
+    }
+
+    @Override
+    public List<Student> getAllStudents() {
+        return studentMapper.getAllStudents();
+    }
+
+    @Override
+    public Student getStudentById(Long id) {
+        return studentMapper.getStudentById(id);
+    }
+
+    @Override
+    public void addStudent(Student student) {
+        studentMapper.insertStudent(student);
+    }
+
+    @Override
+    public void updateStudentPoints(Long id, int points) {
+        studentMapper.updateStudentPoints(id, points);
+    }
+}

src/main/resources/application.properties

@@ -0,0 +1,7 @@
+spring.application.name=attendance
+spring.datasource.url=jdbc:mysql://localhost:3306/roll_call_system
+spring.datasource.username=root
+spring.datasource.password=123456789jk
+spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
+
+mybatis.mapper-locations=classpath:mappers/*.xml