谁能帮我解释一下下面这个struts配置文件么？完全看不懂啊。

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谁能帮我解释一下下面这个struts配置文件么？完全看不懂啊。0

<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
	<!-- Constants -->
	<include file="struts-config-*.xml"></include>
	<constant name="struts.devMode" value="false" />
	<constant name="struts.i18n.encoding" value="UTF-8" />
	<constant name="struts.action.extension" value="html" />
	<constant name="struts.objectFactory" value="spring" />
	<constant name="struts.custom.i18n.resources" value="ApplicationResources,errors" />
	<constant name="struts.multipart.maxSize" value="10485760" />
	<constant name="struts.ui.theme" value="css_xhtml" />
	<constant name="struts.codebehind.pathPrefix" value="/WEB-INF/pages/" />
	<constant name="struts.enable.SlashesInActionNames" value="true" />
	<constant name="struts.convention.action.disableScanning" value="true" />

	<!-- Configuration for the default package. -->
	<package name="default" extends="struts-default">
		<interceptors>
			<!-- Interceptor to handle allowing only admins to certain actions -->
			<interceptor name="adminOnly" class="adminInterceptor" />
				<!--Copied from struts-default.xml and changed validation exclude
				methods
			-->
			<interceptor-stack name="defaultStack">
				<interceptor-ref name="exception" />
				<interceptor-ref name="alias" />
				<interceptor-ref name="servletConfig" />
				<interceptor-ref name="prepare" />
				<interceptor-ref name="i18n" />
				<interceptor-ref name="chain" />
				<interceptor-ref name="debugging" />
				<interceptor-ref name="profiling" />
				<interceptor-ref name="scopedModelDriven" />
				<interceptor-ref name="modelDriven" />
				<interceptor-ref name="fileUpload" />
				<interceptor-ref name="checkbox" />
				<interceptor-ref name="staticParams" />
				<interceptor-ref name="params">
					<param name="excludeParams">dojo\..*</param>
				</interceptor-ref>
				<interceptor-ref name="conversionError" />
				<interceptor-ref name="validation">
					<param name="excludeMethods">cancel,execute,delete,edit,list</param>
				</interceptor-ref>
				<interceptor-ref name="workflow">
					<param name="excludeMethods">input,back,cancel,browse</param>
				</interceptor-ref>
			</interceptor-stack>
			<interceptor-stack name="fileUploadStack">
				<interceptor-ref name="fileUpload" />
				<interceptor-ref name="defaultStack" />
			</interceptor-stack>
			<interceptor-stack name="adminCheck">
				<interceptor-ref name="defaultStack" />
				<interceptor-ref name="adminOnly" />
			</interceptor-stack>
		</interceptors>

		<global-results>
			<result name="mainMenu" type="redirectAction">index</result>
			<result name="dataAccessFailure">/WEB-INF/pages/dataAccessFailure.jsp</result>
		</global-results>

		<global-exception-mappings>
			<exception-mapping exception="org.springframework.dao.DataAccessException"
				result="dataAccessFailure" />
		</global-exception-mappings>

		<action name="mainMenu">
			<result name="success">/WEB-INF/pages/index.jsp</result>
		</action>

		<action name="signup" class="signupAction">
			<result name="cancel" type="redirect">/</result>
			<result name="input">/WEB-INF/pages/signup.jsp</result>
			<result name="success" type="chain">saveSignup</result>
		</action>

		<action name="saveSignup" class="signupAction" method="save">
			<result name="input">/WEB-INF/pages/signup.jsp</result>
			<result name="success" type="redirectAction">/mainMenu</result>
		</action>

		<action name="editUser" class="userAction" method="edit">
			<interceptor-ref name="adminCheck" />
			<result name="success">/WEB-INF/pages/userForm.jsp</result>
			<result name="input">/WEB-INF/pages/admin/userList.jsp</result>
		</action>

		<action name="editProfile" class="userAction" method="edit">
			<result name="success">/WEB-INF/pages/userForm.jsp</result>
			<result name="error">/WEB-INF/pages/mainMenu.jsp</result>
		</action>

		<action name="saveUser" class="userAction" method="save">
			<result name="cancel" type="redirectAction">admin/users</result>
			<result name="input">/WEB-INF/pages/userForm.jsp</result>
			<result name="success" type="redirectAction">admin/users</result>
		</action>

		<action name="queryTargetUsers" class="com.asb.oas.webapp.action.UserAction"
			method="queryUser">
			<result name="success" type="stream">
				<param name="contentCharSet">GBK</param>
			</result>
		</action>

		<!--
			action name="uploadFile"
			class="com.asb.oas.webapp.action.FileUploadAction"> <interceptor-ref
			name="fileUploadStack" /> <result
			name="input">/WEB-INF/pages/uploadForm.jsp</result> <result
			name="success">/WEB-INF/pages/uploadDisplay.jsp</result> <result
			name="cancel" type="redirectAction">mainMenu</result> </action
		-->

		<action name="passwordHint" class="passwordHintAction">
			<result name="input">/</result>
			<result name="success">/</result>
		</action>

		<action name="index" class="signupAction" method="index">
			<result>/WEB-INF/pages/index.jsp</result>
		</action>

这是从别人的项目里贴过来的，我自己的项目的struts完全没这么复杂啊.谁帮我解释一下，或者指条明路。