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POSEVERE: Exception starting filter struts2 java.lang.ClassNotFoundException: org.apache.struts2.dispatcher.FilterDispatcher
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I am trying to make a small login application in struts 2. My web.xml: <pre class="lang-xml prettyprint-override"><code><?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"> <display-name>StrutsPrj</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> <welcome-file-list> <welcome-file>Login.jsp</welcome-file> </welcome-file-list> </web-app> </code></pre> Struts.xml: <pre><code><struts> <package name="default" extends="struts-default" namespace="/"> <action name="login" method="execute" class="struts2.LoginAction"> <result name="success">Welcome.jsp</result> <result name="error">Login.jsp</result> </action> </package> </struts> </code></pre> login.jsp: <pre class="lang-html prettyprint-override"><code><%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <%@ taglib prefix="s" uri="/struts-tags"%> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>Login Screen - Struts 2</title> </head> <body> <s:actionerror /> <s:form action="login.action" method="post"> <s:textfield name="username" value="UserName" size="20" /> <s:password name="password" value="Password" size="20" /> <s:submit method="execute" value="Login" align="center" /> </s:form> </body> </html> </code></pre> Welcome.jsp: <pre><code><%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <%@ taglib prefix="s" uri="/struts-tags"%> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>Welcome Screen - Struts 2</title> </head> <body> <h2>Congrates, <s:property value="username" />...!</h2> </body> </html> </code></pre> LoginAction.java: <pre class="lang-java prettyprint-override"><code>package struts2; public class LoginAction { private String username; private String password; public String execute() { if (this.username.equals("admin") && this.password.equals("admin123")) { return "success"; } else { return "error"; } } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } } </code></pre> And i have added these libraries to my project: <ul> <li>commons-logging-1.0.4.jar</li> <li>struts2-core-2.1.8.1.jar</li> <li>ognl-2.6.11.jar</li> <li>xwork-2.1.0.jar</li> <li>freemarker-2.3.9.jar</li> </ul> When I try to run this on Tomcat 6 I got following error: <pre class="lang-none prettyprint-override"><code>Mar 10, 2011 1:17:59 PM org.apache.catalina.core.AprLifecycleListener init INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Java\jre6\bin;.;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:/Java/jre6/bin/client;C:/Java/jre6/bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Java\jdk1.5\bin\;C:\Program Files\TortoiseSVN\bin;C:\Program Files\Liquid Technologies\Liquid XML Studio 2009\XmlDataBinder7\Redist7\cpp\win32\bin;C:\Program Files\QuickTime\QTSystem\;C:\Program Files\MySQL\MySQL Server 5.0\bin Mar 10, 2011 1:17:59 PM org.apache.tomcat.util.digester.SetPropertiesRule begin WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:newPrj' did not find a matching property. Mar 10, 2011 1:17:59 PM org.apache.tomcat.util.digester.SetPropertiesRule begin WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context/Loader} Setting property 'useSystemClassLoaderAsParent' to 'false' did not find a matching property. Mar 10, 2011 1:17:59 PM org.apache.tomcat.util.digester.SetPropertiesRule begin WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:StrutsPrj' did not find a matching property. Mar 10, 2011 1:17:59 PM org.apache.tomcat.util.digester.SetPropertiesRule begin WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context/Loader} Setting property 'useSystemClassLoaderAsParent' to 'false' did not find a matching property. Mar 10, 2011 1:18:00 PM org.apache.coyote.http11.Http11Protocol init INFO: Initializing Coyote HTTP/1.1 on http-8080 Mar 10, 2011 1:18:00 PM org.apache.catalina.startup.Catalina load INFO: Initialization processed in 2037 ms Mar 10, 2011 1:18:00 PM org.apache.catalina.core.StandardService start INFO: Starting service Catalina Mar 10, 2011 1:18:00 PM org.apache.catalina.core.StandardEngine start INFO: Starting Servlet Engine: Apache Tomcat/6.0.32 Mar 10, 2011 1:18:01 PM org.apache.catalina.core.StandardContext filterStart SEVERE: Exception starting filter struts2 java.lang.ClassNotFoundException: org.apache.struts2.dispatcher.FilterDispatcher at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526) at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:269) at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422) at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115) at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4071) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4725) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053) at org.apache.catalina.core.StandardHost.start(StandardHost.java:840) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463) at org.apache.catalina.core.StandardService.start(StandardService.java:525) at org.apache.catalina.core.StandardServer.start(StandardServer.java:754) at org.apache.catalina.startup.Catalina.start(Catalina.java:595) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414) Mar 10, 2011 1:18:01 PM org.apache.catalina.core.StandardContext start SEVERE: Error filterStart Mar 10, 2011 1:18:01 PM org.apache.catalina.core.StandardContext start SEVERE: Context [/StrutsPrj] startup failed due to previous errors Mar 10, 2011 1:18:01 PM org.apache.coyote.http11.Http11Protocol start INFO: Starting Coyote HTTP/1.1 on http-8080 Mar 10, 2011 1:18:01 PM org.apache.jk.common.ChannelSocket init INFO: JK: ajp13 listening on /0.0.0.0:8009 Mar 10, 2011 1:18:01 PM org.apache.jk.server.JkMain start INFO: Jk running ID=0 time=0/97 config=null Mar 10, 2011 1:18:01 PM org.apache.catalina.startup.Catalina start INFO: Server startup in 1756 ms </code></pre>
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SEVERE: Exception starting filter struts2 java.lang.ClassNotFoundException: org.apache.struts2.dispatcher.FilterDispatcher
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1. COI guess its a jar file version conflict problem.If you are following any online example then check your jar versions with that example.
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