FileAccessException in Struts2 with Google AppEngine

[t0mkaka via StackOverflow]

I am trying to integrate struts2 with the google appengine. I am following the steps from the codeproject link here

The code compiles fine but when I access the localhost:8888 it throws the following FileAccessException

WARNING: /
java.security.AccessControlException: access denied ("java.io.FilePermission" "jar:file:\E:\AppEngineSampleProject\war\WEB-INF\lib\struts2-core-2.3.14.2.jar" "read")
at java.security.AccessControlContext.checkPermission(AccessControlContext.java:366)
at java.security.AccessController.checkPermission(AccessController.java:560)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
at com.google.appengine.tools.development.DevAppServerFactory$CustomSecurityManager.checkPermission(DevAppServerFactory.java:383)
at java.lang.SecurityManager.checkRead(SecurityManager.java:888)
at java.util.zip.ZipFile.<init>(ZipFile.java:205)
at java.util.zip.ZipFile.<init>(ZipFile.java:144)
at java.util.jar.JarFile.<init>(JarFile.java:153)
at java.util.jar.JarFile.<init>(JarFile.java:90)
at com.opensymphony.xwork2.util.fs.JarEntryRevision.needsReloading(JarEntryRevision.java:76)
at com.opensymphony.xwork2.util.fs.DefaultFileManager.fileNeedsReloading(DefaultFileManager.java:66)
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.needsReload(XmlConfigurationProvider.java:394)
at org.apache.struts2.config.StrutsXmlConfigurationProvider.needsReload(StrutsXmlConfigurationProvider.java:169)
at com.opensymphony.xwork2.config.ConfigurationManager.needReloadContainerProviders(ConfigurationManager.java:215)
at com.opensymphony.xwork2.config.ConfigurationManager.conditionalReload(ConfigurationManager.java:179)
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:73)
at org.apache.struts2.dispatcher.Dispatcher.getContainer(Dispatcher.java:942)
at org.apache.struts2.dispatcher.ng.PrepareOperations.createActionContext(PrepareOperations.java:77)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:78)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.api.socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:123)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:63)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectRequest(DevAppServerModulesFilter.java:368)
at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectModuleRequest(DevAppServerModulesFilter.java:351)
at com.google.appengine.tools.development.DevAppServerModulesFilter.doFilter(DevAppServerModulesFilter.java:116)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:97)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:485)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)

My struts.xml file is

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
    <constant name="struts.action.excludePattern" value="/_ah/.*"/>
    <constant name="struts.devMode" value="false" />
    <constant name="struts.configuration.xml.reoload" value="false"></constant>
    <package
      name="default"
      extends="struts-default">
        <default-action-ref name="index"/>
        <action name="index" class="org.hanbo.sample.HelloWorld">
                <result name="success">/jsp/HelloWorld.jsp</result>    
            </action>
        </package>
    </struts>

And my web.xml file is

<?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" version="2.5">

    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.hanbo.sample.GaePrepareAndExecuteFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <listener>
        <listener-class>com.struts2.gae.listener.OgnlListener</listener-class>
    </listener>
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
    </welcome-file-list>

</web-app>

I have already tried to put

<constant name="struts.devMode" value="false" />

but the exception is still there. Please help.

Please DO NOT REPLY directly to this email but go to StackOverflow:
http://stackoverflow.com/questions/18610967/fileaccessexception-in-struts2-with-google-appengine

[user1902288 via StackOverflow]

As a first step YOU COULD TRY this:

BUT BE AWARE ITS VERY UNSAFE AND JUST TO SEE IF IT IS THE REASON FOR YOUR CURRENT PROBLEM! MAY EVEN JUST TRY IT WHILE BEEING OFFLINE AND IMEDIATLY REMOVE IT AFTER THE TEST!

go to where your JRE is installed = {JRE_HOME} then go to this subfolder:

/lib/security/java.policy (e.g. {JRE_HOME}/lib/security/java.policy)

Inside this file add: grant { permission java.security.AllPermission; };

This will allow any programm executed with your JVM to do basicially ANYTHING!

So if it should work you know it has something to do with your java-permissions that you have to read about and configure according to your needs.

IN ANY CASE YOUR NEEDS WILL NEVER BE TO GRANT ABOVE GENERAL PERMISSION SO MAKE SURE TO NOT LEAVE THE ABOVE ENTRY IN YOUR java.policy FILES AFTER A QUICK CHECK IF ITS THAT!

Please DO NOT REPLY directly to this email but go to StackOverflow:

http://stackoverflow.com/questions/18610967/fileaccessexception-in-struts2-with-google-appengine/18611175#18611175

[Lukasz Lenart via StackOverflow]

I think the best option here is to implement your own version of FileManager and override messing methods, i.e. fileNeedsReloading() should always return false.

Check the docs: http://struts.apache.org/release/2.3.x/docs/webxml.html http://struts.apache.org/release/2.3.x/docs/plugins.html

Please DO NOT REPLY directly to this email but go to StackOverflow:

http://stackoverflow.com/questions/18610967/fileaccessexception-in-struts2-with-google-appengine/18630789#18630789