springBoot 自定义异常_soringboot 自定义exception

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