Struts2全局异常 全局结果的配置

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd"><struts>    <package name="excpackage" extends="struts-default" abstract="true">        <!-- 全局返回 -->        <global-results>            <result name="err1">                err1.jsp            </result>            <result name="err2">                err2.jsp            </result>        </global-results>        <!-- 全局异常映射 -->        <global-exception-mappings>            <exception-mapping result="err2" exception="java.lang.Exception"/>        </global-exception-mappings>    </package></struts>