仅在spring rest API的响应中填充必填字段

// 定义响应实体类
public class ApiResponse<T> {
    private int status;
    private String message;
    private T data;

    // 省略getter和setter方法
}

// 自定义异常类
public class CustomException extends RuntimeException {
    // 省略异常相关代码
}

// 全局异常处理器
@RestControllerAdvice
public class GlobalExceptionHandler {

    @ExceptionHandler(CustomException.class)
    public ApiResponse<String> handleCustomException(CustomException ex) {
        ApiResponse<String> response = new ApiResponse<>();
        response.setStatus(HttpStatus.BAD_REQUEST.value());
        response.setMessage(ex.getMessage());
        response.setData(null);

        return response;
    }

    // 其他异常处理方法...

    // 全局异常处理方法，处理其他未捕获的异常
    @ExceptionHandler(Exception.class)
    public ApiResponse<String> handleException(Exception ex) {
        ApiResponse<String> response = new ApiResponse<>();
        response.setStatus(HttpStatus.INTERNAL_SERVER_ERROR.value());
        response.setMessage("Internal Server Error");
        response.setData(null);

        return response;
    }
}

// 控制器类
@RestController
public class ApiController {

    // 示例API接口
    @GetMapping("/api/example")
    public ApiResponse<String> exampleApi() {
        // 模拟业务逻辑
        if (true) {
            throw new CustomException("Business Error");
        }

        ApiResponse<String> response = new ApiResponse<>();
        response.setStatus(HttpStatus.OK.value());
        response.setMessage("Success");
        response.setData("Response Data");

        return response;
    }
}