The requested resource is not available on Tomcat

Question

I'm trying to get a Struts tutorial working but I am coming up against the following error when I try to run the file in Tomcat.

The requested resource () is not available.

Tomcat Log Output:

Aug 29, 2012 9:55:37 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:\Program Files\Java\jre7\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\GTK2-Runtime\bin;c:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static;.
Aug 29, 2012 9:55:37 PM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:StrutsExample1' did not find a matching property.
Aug 29, 2012 9:55:37 PM org.apache.coyote.http11.Http11Protocol init
INFO: Initializing Coyote HTTP/1.1 on http-8080
Aug 29, 2012 9:55:37 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 1367 ms
Aug 29, 2012 9:55:37 PM org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
Aug 29, 2012 9:55:37 PM org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/6.0.35
Aug 29, 2012 9:55:38 PM org.apache.coyote.http11.Http11Protocol start
INFO: Starting Coyote HTTP/1.1 on http-8080
Aug 29, 2012 9:55:39 PM org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
Aug 29, 2012 9:55:39 PM org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/56  config=null
Aug 29, 2012 9:55:39 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 1468 ms

My web.xml file:

<?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>StrutsExample1</display-name>

  <servlet>
    <servlet-name>action</servlet-name>
    <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
    <init-param>
      <param-name>config</param-name>
      <param-value>/WEB-INF/struts-config.xml</param-value>
    </init-param>
    <load-on-startup>2</load-on-startup>
 </servlet>

  <servlet-mapping>
    <servlet-name>action</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>

  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

struts-config.xml:

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts-config PUBLIC
          "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN"
          "http://struts.apache.org/dtds/struts-config_1_3.dtd">

<struts-config>

    <form-beans>
        <form-bean name="helloWorldForm" type="com.vaannila.form.HelloWorldForm"/>
    </form-beans>

    <global-forwards>
        <forward name="helloWorld" path="/helloWorld.do"/>
    </global-forwards>

    <action-mappings>
        <action path="/helloWorld" type="com.vaannila.action.HelloWorldAction" name="helloWorldForm">
            <forward name="success" path="/helloWorld.jsp" />
        </action>
    </action-mappings>

</struts-config>

I'm running Tomcat as a plug-in for Eclipse.

Answer 1

The servlet mapping is *.do only mapped resources by extension. The message

The requested resource () is not available

shows that resource path is empty. The requested resource is web application root.

Even if you have welcome file index.jsp it might not be loaded by the Tomacat. It might also doesn't exist.

If you are using Struts framework you should not access JSP directly, and to access Struts action you should specify valid URL that is mapped to the action. I.e. http://localhost:8080/StrutsExample1/helloworld.do.