全局异常处理

1. GlobalExceptionHandler 

package com.vipsoft.web.boot.exception;

import com.vipsoft.web.boot.utils.Result;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.validation.BindException;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.validation.ObjectError;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.util.List;

/**
 * 全局异常处理器
 */
@RestControllerAdvice
public class GlobalExceptionHandler {

    private static final Logger logger = LoggerFactory.getLogger(GlobalExceptionHandler.class);

    /**
     * 处理自定义异常
     */
    @ExceptionHandler(CustomException.class)
    public Result handleException(CustomException e) {
        // 打印异常信息
        logger.error("### 异常信息:{} ###", e.getMessage());
        return new Result(e.getCode(), e.getMessage());
    }

    /**
     * 参数错误异常
     */
    @ExceptionHandler({MethodArgumentNotValidException.class, BindException.class})
    public Result handleException(Exception e) {

        if (e instanceof MethodArgumentNotValidException) {
            MethodArgumentNotValidException validException = (MethodArgumentNotValidException) e;
            BindingResult result = validException.getBindingResult();
            StringBuffer errorMsg = new StringBuffer();
            if (result.hasErrors()) {
                List<ObjectError> errors = result.getAllErrors();
                errors.forEach(p -> {
                    FieldError fieldError = (FieldError) p;
                    errorMsg.append(fieldError.getDefaultMessage()).append(",");
                    logger.error("### 请求参数错误：{" + fieldError.getObjectName() + "},field{" + fieldError.getField() + "},errorMessage{" + fieldError.getDefaultMessage() + "}");
                });
            }
        } else if (e instanceof BindException) {
            BindException bindException = (BindException) e;
            if (bindException.hasErrors()) {
                logger.error("### 请求参数错误: {}", bindException.getAllErrors());
            }
        }
        return new Result(10001, "参数无效");
    }

    /**
     * 处理所有不可知的异常
     */
    @ExceptionHandler(Exception.class)
    public Result handleOtherException(Exception e) {
        //打印异常堆栈信息
        e.printStackTrace();
        // 打印异常信息
        logger.error("### 不可知的异常:{} ###", e.getMessage());
        return new Result(40001, "系统内部错误");
    }

}

2.CustomException

package com.vipsoft.web.boot.exception;

public class CustomException extends RuntimeException {
    private static final long serialVersionUID = 1L;

    private int code;
    private String msg;

    public CustomException(String msg) {
        super(msg);
        this.code = 500;
        this.msg = msg;
    }

    public CustomException(String msg, Throwable e) {
        super(msg, e);
        this.msg = msg;
    }

    public CustomException(int code, String msg) {
        super(msg);
        this.code = code;
        this.msg = msg;
    }

    public CustomException(int code, String msg, Throwable e) {
        super(msg, e);
        this.code = code;
        this.msg = msg;
    }

    public int getCode() {
        return code;
    }

    public void setCode(int code) {
        this.code = code;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }


}

可以结合：DevOps 运维提醒 钉钉群通知，做些预警通知