SpringBoot实现全局异常的封装和统一处理

/**
可直接进行throw该异常类进行返回信息
**/
public class CustomException extends RuntimeException {
    //错误码枚举
    private final ErrorCode errorCode;

    public CustomException(ErrorCode errorCode) {
        super(errorCode.getMessage());
        this.errorCode = errorCode;
    }

    public ErrorCode getErrorCode() {
        return errorCode;
    }
}

public enum ErrorCode {
    SUCCESS("10000", "success"),
    SYSTEM_ERROR("500", "系统系统，请联系管理员"),
    NOT_FOUNT("404","未找到对应的资源");

    // 其他错误码...

    private final String code;
    private final String message;

    ErrorCode(String code, String message) {
        this.code = code;
        this.message = message;
    }

    public String getCode() {
        return code;
    }

    public String getMessage() {
        return message;
    }
}

@ControllerAdvice
public class GlobalExceptionHandler {

    @ExceptionHandler(CustomException.class)
    public ResponseEntity<Response> handleCustomException(CustomException ex) {
        ErrorCode errorCode = ex.getErrorCode();
        return new ResponseEntity<>(Response.error(errorCode.getCode(), errorCode.getMessage()), HttpStatus.INTERNAL_SERVER_ERROR);
    }

    @ExceptionHandler(Exception.class)
    public ResponseEntity<Response> handleOtherExceptions(Exception ex) {
        return new ResponseEntity<>(Response.error(), HttpStatus.INTERNAL_SERVER_ERROR);
    }
}

@Data
public class Response<T> {
    private  String code;
    private  String message;
    private T data;
    //默认的返回成功
    public static Response success(){
        Response response  =new Response();
        response.setCode(ErrorCode.SUCCESS.getCode());
        response.setMessage(ErrorCode.SUCCESS.getMessage());
        return response;
    }
    //带内容的返回成功
    public static <T> Response success(T data){
        Response<T> response  =new Response<T>();
        response.setCode(ErrorCode.SUCCESS.getCode());
        response.setData(data);
        response.setMessage(ErrorCode.SUCCESS.getMessage());
        return response;
    }
    //默认的返回失败
    public static Response error(){
        Response response  =new Response();
        response.setCode(ErrorCode.SYSTEM_ERROR.getCode());
        response.setMessage(ErrorCode.SYSTEM_ERROR.getMessage());
        return response;
    }
    //自定义的返回失败
    public static Response error(String code,String msg){
        Response response  =new Response();
        response.setCode(code);
        response.setMessage(msg);
        return response;
    }
}

@RestController
@RequestMapping("/api/test")
public class TestConroller {
    @GetMapping("/success")
    public ResponseEntity<Response> successObj(){
        return ResponseEntity.ok(Response.success("111111"));
    }
    @GetMapping("/error")
    public ResponseEntity<Response> error(String name) {
    //传入的name等于张三时，抛出我们的异常处理。
        if(StringUtils.equals(name,"zhangsan")){
            throw new CustomException(ErrorCode.SYSTEM_ERROR);
        }
        return ResponseEntity.ok(Response.success());
    }
}    

{
"code": "10000",
"message": "success",
"data": "111111"
}

{
"code": "500",
"message": "系统系统，请联系管理员",
"data": null
}