springboot统一处理异常

增加业务异常处理类：

package com.example.demo.config;

import lombok.Data;

@Data
public class BizException  extends RuntimeException{
    protected Integer errorCode;
    protected String errorMsg;

    public BizException(){

    }

    public BizException(Integer errorCode, String errorMsg) {
        this.errorCode = errorCode;
        this.errorMsg = errorMsg;
    }
}

 

设置异常handler：

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46

package com.example.demo.config;   import lombok.Data; import org.springframework.web.bind.annotation.ControllerAdvice; import org.springframework.web.bind.annotation.ExceptionHandler; import org.springframework.web.bind.annotation.ResponseBody;   @Data class ErrorObj<T>{     //是否成功     private Boolean success;     //状态码     private Integer code;     //提示信息     private String msg;     //数据     private T data; } @ControllerAdvice public class GlobalExceptionHandler {     @ExceptionHandler(value =Exception.class)     @ResponseBody     public ErrorObj exceptionHandler(Exception e){         System.out.println("发生了一个运行时异常"+e);           ErrorObj errObj = new ErrorObj();         errObj.setSuccess(false);         errObj.setCode(1);         errObj.setMsg(e.getMessage());         errObj.setData("");         return errObj;     }       @ExceptionHandler(value =BizException.class)     @ResponseBody     public ErrorObj bizexceptionHandler(BizException e){         System.out.println("发生了一个业务异常"+e);           ErrorObj errObj = new ErrorObj();         errObj.setSuccess(false);         errObj.setCode(e.getErrorCode());         errObj.setMsg(e.getErrorMsg());         errObj.setData("");         return errObj;     } }

　　

测试：

    @RequestMapping("/hello")
    public void hello() throws BizException {
        throw new BizException(1, "我抛出了一个错误");
    }
    @RequestMapping("/zeroException")
    public Integer zeroException(){
        return 100/0;
    }

 

执行结果：

{"success":false,"code":1,"msg":"/ by zero","data":""}

{"success":false,"code":1,"msg":"我抛出了一个错误","data":""}

 

命令行输出：