1.定义基础异常接口类
/**
* @description: 服务接口类
* @author: MrVK
* @date: 2021/4/19 21:39
*/
public interface BaseErrorInfoInterface {
/**
* 错误码
* @return
*/
String getResultCode();
/**
* 错误描述
* @return
*/
String getResultMsg();
}
2.定义错误处理枚举类
/**
* @description: 异常处理枚举类
* @author: MrVK
* @date: 2021/4/19 21:41
* @version: v1.0
*/
public enum ExceptionEnum implements BaseErrorInfoInterface{
// 数据操作错误定义
SUCCESS("2000", "成功!"),
BODY_NOT_MATCH("4000","请求的数据格式不符!"),
SIGNATURE_NOT_MATCH("4001","请求的数字签名不匹配!"),
NOT_FOUND("4004", "未找到该资源!"),
INTERNAL_SERVER_ERROR("5000", "服务器内部错误!"),
SERVER_BUSY("5003","服务器正忙，请稍后再试!");
/**
* 错误码
*/
private final String resultCode;
/**
* 错误描述
*/
private final String resultMsg;
ExceptionEnum(String resultCode, String resultMsg) {
this.resultCode = resultCode;
this.resultMsg = resultMsg;
}
@Override
public String getResultCode() {
return resultCode;
}
@Override
public String getResultMsg() {
return resultMsg;
}
}
3.自定义异常类
/**
* @description: 自定义异常类
* @author: MrVK
* @date: 2021/4/19 21:44
* @version: v1.0
*/
public class BizException extends RuntimeException{
private static final long serialVersionUID = 1L;
/**
* 错误码
*/
protected String errorCode;
/**
* 错误信息
*/
protected String errorMsg;
public BizException() {
super();
}
public BizException(BaseErrorInfoInterface errorInfoInterface) {
super(errorInfoInterface.getResultCode());
this.errorCode = errorInfoInterface.getResultCode();
this.errorMsg = errorInfoInterface.getResultMsg();
}
public BizException(BaseErrorInfoInterface errorInfoInterface, Throwable cause) {
super(errorInfoInterface.getResultCode(), cause);
this.errorCode = errorInfoInterface.getResultCode();
this.errorMsg = errorInfoInterface.getResultMsg();
}
public BizException(String errorMsg) {
super(errorMsg);
this.errorMsg = errorMsg;
}
public BizException(String errorCode, String errorMsg) {
super(errorCode);
this.errorCode = errorCode;
this.errorMsg = errorMsg;
}
public BizException(String errorCode, String errorMsg, Throwable cause) {
super(errorCode, cause);
this.errorCode = errorCode;
this.errorMsg = errorMsg;
}
public String getErrorCode() {
return errorCode;
}
public void setErrorCode(String errorCode) {
this.errorCode = errorCode;
}
public String getErrorMsg() {
return errorMsg;
}
public void setErrorMsg(String errorMsg) {
this.errorMsg = errorMsg;
}
@Override
public Throwable fillInStackTrace() {
return this;
}
}
4.自定义响应体类
/**
* @description: 自定义数据传输
* @author: MrVK
* @date: 2021/4/19 21:47
* @version: v1.0
*/
public class ResultResponse {
/**
* 响应代码
*/
private String code;
/**
* 响应消息
*/
private String message;
/**
* 响应结果
*/
private Object result;
public ResultResponse() {
}
public ResultResponse(BaseErrorInfoInterface errorInfo) {
this.code = errorInfo.getResultCode();
this.message = errorInfo.getResultMsg();
}
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public Object getResult() {
return result;
}
public void setResult(Object result) {
this.result = result;
}
/**
* 成功
*
* @return
*/
public static ResultResponse success() {
return success(null);
}
/**
* 成功
* @param data
* @return
*/
public static ResultResponse success(Object data) {
ResultResponse rb = new ResultResponse();
rb.setCode(ExceptionEnum.SUCCESS.getResultCode());
rb.setMessage(ExceptionEnum.SUCCESS.getResultMsg());
rb.setResult(data);
return rb;
}
/**
* 失败
*/
public static ResultResponse error(BaseErrorInfoInterface errorInfo) {
ResultResponse rb = new ResultResponse();
rb.setCode(errorInfo.getResultCode());
rb.setMessage(errorInfo.getResultMsg());
rb.setResult(null);
return rb;
}
/**
* 失败
*/
public static ResultResponse error(String code, String message) {
ResultResponse rb = new ResultResponse();
rb.setCode(code);
rb.setMessage(message);
rb.setResult(null);
return rb;
}
/**
* 失败
*/
public static ResultResponse error( String message) {
ResultResponse rb = new ResultResponse();
rb.setCode("-1");
rb.setMessage(message);
rb.setResult(null);
return rb;
}
@Override
public String toString() {
return JSONObject.toJSONString(this);
}
}
5.自定义全局异常处理
/**
* @description: 自定义异常处理
* @author: MrVK
* @date: 2021/4/19 21:51
* @version: v1.0
*/
@ControllerAdvice
public class GlobalExceptionHandler {
private static final Logger logger = LoggerFactory.getLogger(GlobalExceptionHandler.class);
/**
* 处理自定义的业务异常
* @param req
* @param e
* @return
*/
@ExceptionHandler(value = BizException.class)
@ResponseBody
public ResultResponse bizExceptionHandler(HttpServletRequest req, BizException e){
logger.error("发生业务异常！原因是：{}",e.getErrorMsg());
return ResultResponse.error(e.getErrorCode(),e.getErrorMsg());
}
/**
* 处理空指针的异常
* @param req
* @param e
* @return
*/
@ExceptionHandler(value =NullPointerException.class)
@ResponseBody
public ResultResponse exceptionHandler(HttpServletRequest req, NullPointerException e){
logger.error("发生空指针异常！原因是:",e);
return ResultResponse.error(ExceptionEnum.BODY_NOT_MATCH);
}
/**
* 处理其他异常
* @param req
* @param e
* @return
*/
@ExceptionHandler(value =Exception.class)
@ResponseBody
public ResultResponse exceptionHandler(HttpServletRequest req, Exception e){
logger.error("未知异常！原因是:",e);
return ResultResponse.error(ExceptionEnum.INTERNAL_SERVER_ERROR);
}
}
6.测试代码
@PostMapping("/add")
public boolean add(@RequestBody User user) {
//如果姓名为空就手动抛出一个自定义的异常！
if(user.getName()==null){
throw new BizException("-1","用户姓名不能为空！");
}
return true;
}
@PutMapping("/update")
public boolean update(@RequestBody User user) {
//这里故意造成一个空指针的异常，并且不进行处理
String str = null;
str.equals("111");
return true;
}
@DeleteMapping("/delete")
public boolean delete(@RequestBody User user) {
//这里故意造成一个异常，并且不进行处理
Integer.parseInt("abc123");
return true;
}
@GetMapping("/error")
@ExceptionHandler(value = NumberFormatException.class)
@ResponseBody
public ResultResponse exceptionHandler(HttpServletRequest req, NumberFormatException e){
logger.error("发生类型转换异常！原因是:",e);
return ResultResponse.error(ExceptionEnum.PARAMS_NOT_CONVERT);
}
7.测试结果
