struts.xml的作用

struts.xml 为Struts 2的核心配置文件。struts.xml文件主要负责管理应用中的Action映射，以及该Action包含的Result定义等。
struts.xml中主要配置Struts项目的一些全局的属性，用户请求和响应Action之间的对应关系，以及配置Action中可能用到的参数，以及处理结果的返回页面。还包括各种拦截器的配置等。

 

例子：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
 <package name="default" extends="strongmvc-default">
  <!-- 基于jasperreport报表结果,jfreechart图表结果，增加jasper,chart -->
  <result-types>
      <result-type name="jasper" class="org.apache.struts2.views.jasperreports.JasperReportsResult"/>
      <result-type name="chart" class="org.apache.struts2.dispatcher.ChartResult">
       <param name="height">150</param>
       <param name="width">200</param>
      </result-type>
     </result-types>
  <!-- 基于paramsPrepareParamsStack,增加store interceptor --><!--
  <interceptors>
   <interceptor-stack name="DemoStack">
    <interceptor-ref name="StrongMVCStack" />
    <interceptor-ref name="defaultStack" />
    <interceptor-ref name="exceptionInterceptor">
     <param name="bundlePath">resource.Message</param>
    </interceptor-ref>
   </interceptor-stack>
  </interceptors>
  
  -->
  <interceptors>
   <interceptor-stack name="DemoStack">
    <!--<interceptor-ref name="StrongMVCStack" />
    <interceptor-ref name="defaultStack" />-->
    <interceptor-ref name="store">
        <param name="operationMode">AUTOMATIC</param>
      </interceptor-ref>
      <interceptor-ref name="paramsPrepareParamsStack" />
    <interceptor-ref name="exceptionInterceptor">
     <param name="bundlePath">com.strongit.uums.resource.Message</param>
    </interceptor-ref>
   </interceptor-stack>
  </interceptors>
  
  <default-interceptor-ref name="DemoStack" />
  <action name="basePrivil1" class="com.strongit.uums.privilmanage.BasePrivilAction">
         <!-- Chain to another namespace -->
         <result name="move" type="chain">
             <param name="actionName">basePrivil</param>
             <param name="method">priviltree</param>
         </result>
     </action>
     <action name="orgmanage1" class="com.strongit.uums.organisemanage.OrgmanageAction">
         <!-- Chain to another namespace -->
         <result name="move" type="chain">
             <param name="actionName">orgmanage</param>
             <param name="method">tree</param>
         </result>
     </action>
     <action name="baseGroup1" class="com.strongit.uums.usergroup.BaseGroupAction">
         <!-- Chain to another namespace -->
         <result name="move" type="chain">
             <param name="actionName">baseGroup</param>
             <param name="method">groupTree</param>
         </result>
     </action>
  <action name="report_*" class="com.strongit.workflow.workflowreport.WorkFlowReportAction" method="report">
   <result name="report" type="jasper">
    <param name="location">
     /WEB-INF/jsp/workflowreport/jasperfile/jasper_template.jasper
    </param>
    <param name="dataSource">processTypeDataList</param>
    <param name="format">{1}</param>
   </result>
   <result name="notdate" type="jasper">
    <param name="location">
     /WEB-INF/jsp/workflowreport/jasperfile/jasper_notdate.jasper
    </param>
    <param name="dataSource">processTypeDataList</param>
    <param name="format">{1}</param>
   </result>
  </action>
  <action name="chart" class="com.strongit.workflow.workflowreport.WorkFlowReportAction" method="chart">
   <result name="chart" type="chart">   
    <param name="width">650</param>
    <param name="height">370</param>
   </result>
  </action>
  
 </package>
</struts>