【struts2】生手求解页面跳转_Java Web开发

【struts2】新手求解页面跳转
我的struts.xml


<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
	"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
	"http://struts.apache.org/dtds/struts-2.3.dtd">

<struts>
	
    <!-- <constant name="struts.enable.DynamicMethodInvocation" value="false" /> -->
    <constant name="struts.devMode" value="true" />
	<constant name="struts.ognl.allowStaticMethodAccess" value="true"></constant>
	<include file="/com/bisxt/struts2/ognl/ognl.xml"></include>
	
</struts>

我的ognl.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
	"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
	"http://struts.apache.org/dtds/struts-2.3.dtd">
	
<struts>
	
	<package name="ognl" extends="struts=default">
		
		<action name="ognl" class="com.bjsxt.struts2.ognl.OgnlAction">
			<result>/ognl.jsp</result>
		</action>
		
	</package>

</struts>

我的index.jsp

<?xml version="1.0" encoding="GB2312" ?>
<%@ page language="java" contentType="text/html; charset=GB2312" pageEncoding="GB2312"%>
<%@ taglib uri="/struts-tags" prefix="s" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
	<meta http-equiv="Content-Type" content="text/html charset=GB2312" />
	<title>OGNL表达式语言学习</title>
</head>
<body>
	访问属性
		<s:form action="ognl">  
            <s:textfield label="请输入名称" key="username"/> 
            <s:textfield label="请输入名称" key="password"/>  
            <s:submit />  
        </s:form> 
        
        <li><a href="<s:url action="ognl" />">ognl</a> </li>
</body>
</html>

ognl.jsp

<?xml version="1.0" encoding="GB2312" ?>
<%@ page language="java" contentType="text/html; charset=GB2312" pageEncoding="GB2312"%>
<%@ taglib uri="/struts-tags" prefix="s" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
	<meta http-equiv="Content-Type" content="text/html charset=GB2312" />
	<title>OGNL表达式语言学习</title>
</head>
<body>
	<ol>
		<li>访问值栈中的action的普通属性:username=<s:property value="username" /></li>
		<li>访问值栈中的对象的普通属性(get set方法):<s:property value="user.age" /></li>
		<li>访问值栈中的对象的普通属性(get set方法):<s:property value="cat.friend.name" /> </li> 
		<li>访问值栈中的对象的普通方法:<s:property value="password.length()" /> </li>
		<li>访问值栈中的对象的普通方法:<s:property value="cat.miaomiao()" /> </li>  
		<li>访问值栈中action的普通方法:<s:property value="m()" /> </li>  
		<hr/>
		<li>访问静态方法：<s:property value="@com.bjsxt.struts2.ognl.S@s()" /> </li>
		<li>访问静态属性：<s:property value="@com.bjsxt.struts2.ognl.S@STR" /> </li>
		<li>访问Math静态方法：<s:property value="@@max(2, 3)" /> </li>
		<hr/>
		<!--<li></li>
		<li>访问容器的大小：<s:property value="" /> </li>
		<hr />
		<li>投影：<s:property value="users.(?#this.age == 1).{age}" /> </li>
		<li>投影：<s:property value="users.(^#this.age > 1).{age}" /> </li>
		<li>投影：<s:property value="users.($#this.age > 1).{age}" /> </li>
		<li>投影：<s:property value="users.($#this.age > 1).{age} == null" /> </li>
		<hr />
		<li>[]:<s:property value="[0]" /> </li>
		 -->
	</ol>
	
	<s:debug></s:debug>
</body>
</html>

我也页面跳转的时候，一点击那个超链接，的时候无法跳转到ognl.jsp页面
There is no Action mapped for namespace [/] and action name [ognl] associated with context path [/struts2OGNL]. - [unknown location]

    com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:185)
    org.apache.struts2.impl.StrutsActionProxy.prepare(StrutsActionProxy.java:63)
    org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:37)
    com.opensymphony.xwork2.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:58)
    org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:552)
    org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
    org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)
    org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
    org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
    org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
    org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
    org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
    org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
    org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:833)
    org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:639)
    org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1285)
    java.lang.Thread.run(Thread.java:619)


------解决思路----------------------
<action name="ognl" class="com.bjsxt.struts2.ognl.OgnlAction" method="方法">

楼主你的OgnlAction里是默认execute()方法?
不是的话要指定
------解决思路----------------------
在struts配置文件中加一个 namespace=“/"
这样：
<package name="ognl" namespace=“/" extends="struts=default">