JAVA项目基于SSM的学生成绩管理系统

一个基于SSM（Spring MVC, Spring, MyBatis）框架的简单学生成绩管理系统的代码示例如下：

// StudentController.java
@Controller
@RequestMapping("/student")
public class StudentController {
 
    @Autowired
    private StudentService studentService;
 
    @RequestMapping(value = "/list", method = RequestMethod.GET)
    public String list(Model model) {
        List<Student> students = studentService.findAllStudents();
        model.addAttribute("students", students);
        return "studentList";
    }
 
    @RequestMapping(value = "/add", method = RequestMethod.GET)
    public String addForm(Model model) {
        Student student = new Student();
        model.addAttribute("student", student);
        return "addStudentForm";
    }
 
    @RequestMapping(value = "/add", method = RequestMethod.POST)
    public String add(@ModelAttribute Student student, RedirectAttributes redirectAttributes) {
        studentService.saveStudent(student);
        redirectAttributes.addFlashAttribute("message", "Student added successfully!");
        return "redirect:/student/list";
    }
 
    // ... 其他方法（如删除、更新等）
}
 
// StudentService.java
@Service
public class StudentService {
 
    @Autowired
    private StudentMapper studentMapper;
 
    public List<Student> findAllStudents() {
        return studentMapper.findAll();
    }
 
    public void saveStudent(Student student) {
        studentMapper.insert(student);
    }
 
    // ... 其他方法
}
 
// StudentMapper.java
@Mapper
public interface StudentMapper {
 
    @Select("SELECT * FROM students")
    List<Student> findAll();
 
    @Insert("INSERT INTO students(name, grade) VALUES(#{name}, #{grade})")
    void insert(Student student);
 
    // ... 其他方法
}

在这个例子中，我们定义了一个StudentController来处理和学生相关的请求，包括展示学生列表、添加学生的表单以及添加操作。StudentService和StudentMapper分别用于定义业务逻辑和数据库操作。这个例子展示了如何使用Spring MVC和MyBatis进行简单的CRUD操作，并且如何通过Spring进行依赖注入。