Spring Boot 统一异常处理

Posted 2021-12-24 liuweiqc

1. DemoException, 自定义异常

@Getter
public class DemoException extends RuntimeException 

    private Integer code;

    public DemoException(ResultEnum resultEnum) 
        super(resultEnum.getMessage());
        this.code = resultEnum.getCode();
    

    public DemoException(Integer code, String message) 
        super(message);
        this.code = code;
    

1. DemoExceptionHandler, 异常处理器

@RestControllerAdvice
public class DemoExceptionHandler 

    @ResponseStatus(value = HttpStatus.OK)  // 返回给前端的http状态码
    @ExceptionHandler(value = DemoException.class)
    public ResultVo handlerSellException(DemoException e) 
        return ResultVoUtil.error(e.getCode(), e.getMessage());
    

1. ResultEnum, 异常信息枚举

@Getter
public enum ResultEnum implements CodeEnum
    PARAM_ERROR(1, "参数不正确"),
    TOKEN_ERROR(10, "token无效"),
    USER_NOT_EXIST(20, "用户不存在"),
    ;

    private Integer code;

    private String message;

    ResultEnum(Integer code, String message) 
        this.code = code;
        this.message = message;