spring设置全局异常处理器

时间：2021-08-14 21:25:31

1.spring设置全局异常,它的原理是向上捕获

spring.xml配置

   <!--自定义全局异常处理器-->

    <bean id="globalExceptionResolver" class="com.data.controller.exception.GlobalExceptionResolver"/>
import com.data.service.email.EmailMessage;

import com.data.utils.constant.AliasConstant;

import javax.annotation.Resource;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Controller;

import org.springframework.web.servlet.HandlerExceptionResolver;

import org.springframework.web.servlet.ModelAndView;

@Controller

public class GlobalExceptionResolver implements HandlerExceptionResolver {

    @Resource

    EmailMessage emailMessage;

    /**

     * 进行全局异常过滤并处理

     *

     * @param request  action 请求

     * @param response 服务器响应

     * @param handler  发生错误的事件句柄

     * @param ex       异常情况

     * @return 视图&对象

     */

    @Override

    public ModelAndView resolveException(HttpServletRequest request,

                                         HttpServletResponse response,

                                         Object handler, Exception ex) {

        //使用StringBuilder提搞GC回收效率，降低垃圾回收开销

        StringBuilder content = new StringBuilder("<++>AllInOne-busWeb抓捕到异常具体内容信息:<++> \t\n");

        String userId = (String) request.getSession().getAttribute(AliasConstant.UserId);

        content.append("造成该异常的用户userID为：   " + userId + "  \t\n");

        content.append("爆出异常的类型为：  " + ex.getClass() + "   \t\n");

        content.append("异常发生的位置为：     " + handler + "   \t\n");

        content.append("造成的原因:      " + ex.getMessage() + "     \t\n");

        content.append("造成的详细原因为：\t\n\n");

        StackTraceElement[] trace = ex.getStackTrace();

        for (StackTraceElement traceElement : trace)

            content.append("at\t  " + traceElement + "\t\n");

        return null;

    }

}

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