I already posted this in "NullPointerException in TilesException using Tiles
with Struts 2" thread.
Does anyone got the same problem when using Tiles 2 with Struts 2
My jsps are simple (don't use tiles tags). I am using tiles just as a
forward result type.
You can look at my configuration given below
1. tiles.xml-------------------------------------------------------------
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE tiles-definitions PUBLIC
"-//Apache Software Foundation//DTD Tiles Configuration 2.0//EN"
"http://jakarta.apache.org/struts/dtds/tiles-config_2_0.dtd";>
<tiles-definitions>
<definition name="login.page" path="/login/Login.jsp"/>
<definition name="home.page" path="/login/Home.jsp"/>
</tiles-definitions>
2. strus.xml-------------------------------------------------------------
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd";>
<struts>
<package name="login" namespace="/login" extends="tiles-default">
<action name="Welcome" class="login.ShowLogin">
<result name="showLogin" type="tiles">login.page</result>
</action>
<action name="Login" class="login.Login">
<result type="tiles">home.page</result>
<result name="invalidLogin" type="tiles">login.page</result>
</action>
</package>
</struts>
3. Login.jsp-------------------------------------------------------------
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title>Login</title>
</head>
<body>
<s:form action="Login">
<s:textfield label="User Name" name="username"/>
<s:password label="Password" name="password" />
<s:submit/>
</s:form>
</body>
</html>
4. Home.jsp-------------------------------------------------------------
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title>Welcome</title>
<link href="<s:url value='/css/tutorial.css'/>" rel="stylesheet"
type="text/css"/>
</head>
<body>
<h3>Languages</h3>
<ul>
<li>
<s:url id="url" action="HelloWorld">
<s:param name="request_locale">en</s:param>
</s:url>
<s:a href="%{url}">English</s:a>
</li>
<li>
<s:url id="url" action="HelloWorld">
<s:param name="request_locale">es</s:param>
</s:url>
<s:a href="%{url}">Espanol</s:a>
</li>
</ul>
</body>
</html>
5. web.xml---------------------------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_9" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd";>
<display-name>Sample Struts2 Application</display-name>
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<context-param>
<param-name>org.apache.tiles.DEFINITION_CONFIG</param-name>
<param-value>\WEB-INF\tiles.xml</param-value>
</context-param>
<listener>
<listener-class>org.apache.struts2.tiles.StrutsTilesListener</listener-class
>
</listener>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
</web-app>
I get following error when I access this application
http://localhost:8080/SampleStruts2/login/Welcome.action
20:11:40,827 ERROR [BasicTilesContainer] Error rendering tile
java.lang.NullPointerException
at
org.apache.struts2.tiles.StrutsTilesRequestContext.include(StrutsTilesReques
tContext.java:94)
at
org.apache.struts2.tiles.StrutsTilesRequestContext.dispatch(StrutsTilesReque
stContext.java:83)
at
org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:39
5)
at
org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:34
5)
at
org.apache.struts2.views.tiles.TilesResult.doExecute(TilesResult.java:104)
at
org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSuppor
t.java:178)
.............and much more................
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