springBoot 自定义异常

柔光的暖阳◎ 2024-04-18 17:06 76阅读 0赞

1、异常实体类+错误code

public class ErrorInfo<T> {
    
        public static final Integer OK = 0;
        public static final Integer ERROR = 100;
    
        private Integer code;
        private String messge;
        private String url;
        private T data;
    
        public Integer getCode() {
            return code;
        }
    
        public void setCode(Integer code) {
            this.code = code;
        }
    
        public String getMessge() {
            return messge;
        }
    
        public void setMessge(String messge) {
            this.messge = messge;
        }
    
        public String getUrl() {
            return url;
        }
    
        public void setUrl(String url) {
            this.url = url;
        }
    
        public T getData() {
            return data;
        }
    
        public void setData(T data) {
            this.data = data;
        }
    }

2、自定义异常类

public class MyException extends Exception{
    
        public MyException(String message){
            super(message);
        }
    }

3、全局异常捕获

@ControllerAdvice
    public class GlobalExceptionHandler {
    
        @ExceptionHandler(value = MyException.class)
        @ResponseBody
        public ErrorInfo<String> jsonErrorHandler(HttpServletRequest req,MyException e){
            ErrorInfo<String> errorInfo = new ErrorInfo<>();
            errorInfo.setCode(ErrorInfo.ERROR);
            errorInfo.setMessge("show error infomation");
            errorInfo.setUrl("www.baidu.com");
            errorInfo.setData(req.getRequestURI().toString());
            return errorInfo;
        }
    }

4、具体使用

@RequestMapping(value = "/errorJson",method = RequestMethod.GET)
        public String errorJson() throws MyException {
            throw new MyException("自定义异常！");
        }

5、访问localhost:8080/errorJson