基于 Spring Boot 和 Vue 开发前后端分离快速开发平台源码分享

// 假设有一个User实体类和对应的UserController
@RestController
@RequestMapping("/api/users")
public class UserController {
 
    private final UserService userService;
 
    @Autowired
    public UserController(UserService userService) {
        this.userService = userService;
    }
 
    // 获取所有用户
    @GetMapping
    public ResponseEntity<List<User>> getAllUsers() {
        List<User> users = userService.findAll();
        return ResponseEntity.ok(users);
    }
 
    // 根据ID获取用户
    @GetMapping("/{id}")
    public ResponseEntity<User> getUserById(@PathVariable(value = "id") Long userId) {
        User user = userService.findById(userId);
        return ResponseEntity.ok(user);
    }
 
    // 创建新用户
    @PostMapping
    public ResponseEntity<User> createUser(@Valid @RequestBody User user) {
        User newUser = userService.save(user);
        return ResponseEntity.ok(newUser);
    }
 
    // 更新用户信息
    @PutMapping("/{id}")
    public ResponseEntity<User> updateUser(@PathVariable(value = "id") Long userId, @Valid @RequestBody User userDetails) {
        User user = userService.findById(userId);
        if (user != null) {
            user.setName(userDetails.getName());
            // ...其他字段更新
            User updatedUser = userService.save(user);
            return ResponseEntity.ok(updatedUser);
        }
        return new ResponseEntity<>(HttpStatus.NOT_FOUND);
    }
 
    // 删除用户
    @DeleteMapping("/{id}")
    public ResponseEntity<?> deleteUser(@PathVariable(value = "id") Long userId) {
        User user = userService.findById(userId);
        if (user != null) {
            userService.deleteById(userId);
            return ResponseEntity.ok().build();
        }
        return new ResponseEntity<>(HttpStatus.NOT_FOUND);
    }
}

这个简单的UserController展示了如何使用Spring Boot创建REST API来对User实体进行基本的CRUD操作。这个例子旨在教育开发者如何设计RESTful API和与之交互的服务层代码。