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;
}
public static ResultBody success() {
return success(null);
}
public static ResultBody success(Object data) {
ResultBody rb = new ResultBody();
rb.setCode(CommonEnum.SUCCESS.getResultCode());
rb.setMessage(CommonEnum.SUCCESS.getResultMsg());
rb.setResult(data);
return rb;
}
public static ResultBody error(baseErrorInfoInterface errorInfo) {
ResultBody rb = new ResultBody();
rb.setCode(errorInfo.getResultCode());
rb.setMessage(errorInfo.getResultMsg());
rb.setResult(null);
return rb;
}
public static ResultBody error(String code, String message) {
ResultBody rb = new ResultBody();
rb.setCode(code);
rb.setMessage(message);
rb.setResult(null);
return rb;
}
public static ResultBody error( String message) {
ResultBody rb = new ResultBody();
rb.setCode("-1");
rb.setMessage(message);
rb.setResult(null);
return rb;
}
@Override
public String toString() {
return JSONObject.toJSonString(this);
}
}
OK，到此关于返回码的东西以及大致完毕，我们现在开始写关于异常捕捉的。
首先写一个异常类继承RuntimeException, BizException.java:
public class BizException extends RuntimeException {
private static final long serialVersionUID = 1L;
protected String errorCode;
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;
}
public String getMessage() {
return errorMsg;
}
@Override
public Throwable fillInStackTrace() {
return this;
}
}
接着是，全局异常Handler, GlobalExceptionHandler.java:
@ControllerAdvice
public class GlobalExceptionHandler {
private static final Logger logger = LoggerFactory.getLogger(GlobalExceptionHandler.class);
@ExceptionHandler(value = BizException.class)
@ResponseBody
public ResultBody bizExceptionHandl
【一线大厂Java面试题解析+后端开发学习笔记+最新架构讲解视频+实战项目源码讲义】
开源完整内容戳这里
er(HttpServletRequest req, BizException e){
logger.error(“发生业务异常！原因是：{}”,e.getErrorMsg());
return ResultBody.error(e.getErrorCode(),e.getErrorMsg());
}
@ExceptionHandler(value =NullPointerException.class)
@ResponseBody
public ResultBody exceptionHandler(HttpServletRequest req, NullPointerException e){
logger.error(“发生空指针异常！原因是:”,e);
return ResultBody.error(CommonEnum.BODY_NOT_MATCH);
}
@ExceptionHandler(value =HttpRequestMethodNotSupportedException.class)
@ResponseBody
public ResultBody exceptionHandler(HttpServletRequest req, HttpRequestMethodNotSupportedException e){
logger.error(“发生请求方法不支持异常！原因是:”,e);
return ResultBody.error(CommonEnum.REQUEST_METHOD_SUPPORT_ERROR);
}
@ExceptionHandler(value =Exception.class)
@ResponseBody
public ResultBody exceptionHandler(HttpServletRequest req, Exception e){
logger.error(“未知异常！原因是:”,e);
return ResultBody.error(CommonEnum.INTERNAL_SERVER_ERROR);
}
}
这里可以手动配置自己想抓取的异常以及处理返回码。
接着写个Controller来模拟一下异常抛出，抓取，使用统一返回码，UserController.java:
@RestController
@RequestMapping("/user")
public class UserController {
@GetMapping("/test")
public boolean test() {
System.out.println(“开始…”);
//这里故意造成一个异常，并且不进行处理
Integer.parseInt(“abc123”);
return true;
}
@GetMapping("/testNull")
public boolean testNull() {
System.out.println(“开始…”);
//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;
}
@PostMapping("/testBizException")
public boolean testBizException() {
System.out.println(“开始…”);
//如果姓名为空就手动抛出一个自定义的异常！
String userName=null;
if(userName==null){
