springboot全局异常处理

package com.casaba.provider.config;

import com.casaba.provider.domain.vo.AjaxResult;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import javax.servlet.http.HttpServletRequest;
import javax.validation.ConstraintViolationException;

/**
 * @author junHong
 * @date 2022/11/3
 */
@Slf4j
@RestControllerAdvice
public class CommonExceptionHandler {
    /**
     * 请求方式错误异常处理
     * @param e
     * @param request
     * @return
     */
    @ExceptionHandler(HttpRequestMethodNotSupportedException.class)
    public AjaxResult<?> handleHttpRequestMethodNotSupported(HttpRequestMethodNotSupportedException e, HttpServletRequest request){
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',不支持'{}'请求", requestURI, e.getMethod());
        return AjaxResult.fail(e.getMessage());
    }
    
    /**
     * 单个参数验证异常处理
     * @param e
     * @return
     */
    @ExceptionHandler(value = {ConstraintViolationException.class})
    public AjaxResult<?> exceptionHandler(ConstraintViolationException e){
        return AjaxResult.fail(e.getMessage());
    }

    /**
     * 参数验证异常处理
     * @param e
     * @return
     */
    @ExceptionHandler(value = {MethodArgumentNotValidException.class})
    public AjaxResult<?> exceptionHandler(MethodArgumentNotValidException e){
        return AjaxResult.fail(e.getBindingResult().getFieldError().getDefaultMessage());
    }

    /**
     * 系统未知异常
     * @param e
     * @param request
     * @return
     */
    @ExceptionHandler(RuntimeException.class)
    public AjaxResult<?> handleRuntimeException(RuntimeException e, HttpServletRequest request)
    {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',发生未知异常.", requestURI, e);
        return AjaxResult.fail(e.getMessage());
    }

    /**
     * 系统异常
     * @param e
     * @param request
     * @return
     */
    @ExceptionHandler(Exception.class)
    public AjaxResult<?> handleException(Exception e, HttpServletRequest request)
    {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',发生系统异常.", requestURI, e);
        return AjaxResult.fail(e.getMessage());
    }
}