springboot创建统一异常拦截器全局处理 异常

1.创建Exception类   

public class MyException extends RuntimeException {
    private ErrorCodeEnum errorCode;

    public MyException(ErrorCodeEnum errorCode) {
        this.errorCode = errorCode;
    }

    public ErrorCodeEnum getErrorCode() {
        return errorCode;
    }

    public void setErrorCode(ErrorCodeEnum errorCode) {
        this.errorCode = errorCode;
    }
}

2.异常枚举类  

public enum ErrorCodeEnum {
    INCORRECT_PASSWORD(10001, "密码错误!"),
    INUSED_USER(10002, "账号错误!"),
    INCORRECT_MSG(10003, "验证码错误!"),

    ErrorCodeEnum(int code, String msg) {
        this.code = code;
        this.msg = msg;
    }

    private int code;
    private String msg;

    public int getCode() {
        return code;
    }

    public String getMsg() {
        return msg;
    }
}




3.全局异常处理类

@ControllerAdvice
public class MyExceptionHandler {
　　　//捕捉到的异常
    @ExceptionHandler(value = MyException.class)
    public ResponseEntity<Result> handleServiceException(MyException exception) {
        ErrorCodeEnum errorCode = exception.getErrorCode();
        return new ResponseEntity(new ResultUtil<String>().setError(errorCode.getCode(), errorCode.getMsg(), ""), HttpStatus.BAD_REQUEST);
    }
　　　　//其他异常
    @ExceptionHandler
    @ResponseStatus(value = HttpStatus.INTERNAL_SERVER_ERROR)
    public ResponseEntity<Result> hadleServerException(Exception exception) {
        exception.printStackTrace();
        HttpStatus httpStatus = HttpStatus.INTERNAL_SERVER_ERROR;
        String msg = "server error, please try again later";
        Class exceptionClazz = exception.getClass();
        if (Objects.equals(MissingServletRequestParameterException.class, exceptionClazz)) {
            msg = "incorrect parameter";
            httpStatus = HttpStatus.BAD_REQUEST;
        } else if (Objects.equals(HttpRequestMethodNotSupportedException.class, exceptionClazz)) {
            httpStatus = HttpStatus.BAD_REQUEST;
            msg = exception.getMessage();
        }
        return new ResponseEntity(new ResultUtil<String>().setError(httpStatus.value(), msg, ""), httpStatus);
    }
}