This isn't a GWT problem, its a GAE problem, and you are more likely to get
an answer on that forum. But from what I know ...
.. you can read files that are present in the war file, but you still cannot
read it as a File. Instead, you should read it from the classpath, like
this
this.getClass().getClassLoader().getResourceAsStream("filename.csv")
where filename.csv is in WEB-INF/classes folder
--Sri
On 2 June 2010 04:14, rahulmalviya <malviyarahul2...@gmail.com> wrote:
> Hi I tried to read a csv file in ServiceImpl class but i am getting
> access denied error. Please tell me how I can handle File IO in Google
> web application. I read through other posts related to my error but
> they say it is related to Google app engine and if i place file under /
> war/WEB-INF directory I can read a file. But still I get the same
> error.
>
> Error trace:
>
> SEVERE: [1275432232530000] javax.servlet.ServletContext log: Exception
> while dispatching incoming RPC call
> com.google.gwt.user.server.rpc.UnexpectedException: Service method
> 'public abstract java.util.List
> testFMIP.client.GreetingService.getFileData()' threw an unexpected
> exception: java.security.AccessControlException: access denied
> (java.io.FilePermission /war/WEB-INF/web.xml read)
> at
> com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:
> 378)
> at
> com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:
> 581)
> at
>
> com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:
> 188)
> at
>
> com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:
> 224)
> at
>
> com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:
> 62)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:713)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
> at
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
> 511)
> at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1166)
> at
>
> com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:
> 51)
> 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:
> 122)
> 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.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:
> 70)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:
> 152)
> at com.google.appengine.tools.development.JettyContainerService
> $ApiProxyHandler.handle(JettyContainerService.java:349)
> 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.content(HttpConnection.java:938)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
> 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)
> Caused by: java.security.AccessControlException: access denied
> (java.io.FilePermission /war/WEB-INF/web.xml read)
> at
>
> java.security.AccessControlContext.checkPermission(AccessControlContext.java:
> 323)
> at
> java.security.AccessController.checkPermission(AccessController.java:
> 546)
> at java.lang.SecurityManager.checkPermission(SecurityManager.java:
> 532)
> at com.google.appengine.tools.development.DevAppServerFactory
> $CustomSecurityManager.checkPermission(DevAppServerFactory.java:166)
> at java.lang.SecurityManager.checkRead(SecurityManager.java:871)
> at java.io.FileInputStream.<init>(FileInputStream.java:100)
> at java.io.FileInputStream.<init>(FileInputStream.java:66)
> at
> testFMIP.server.GreetingServiceImpl.getFileData(GreetingServiceImpl.java:
> 46)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
> 39)
> at
>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
> 25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
>
> com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:
> 100)
> at
> com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:
> 562)
> ... 30 more
>
> Jun 1, 2010 3:43:52 PM
> com.google.appengine.tools.development.ApiProxyLocalImpl log
> SEVERE: [1275432232552000] javax.servlet.ServletContext log: Exception
> while dispatching incoming RPC call
> com.google.gwt.user.server.rpc.UnexpectedException: Service method
> 'public abstract java.util.List
> testFMIP.client.GreetingService.getFileData()' threw an unexpected
> exception: java.security.AccessControlException: access denied
> (java.io.FilePermission /war/WEB-INF/web.xml read)
> at
> com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:
> 378)
> at
> com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:
> 581)
> at
>
> com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:
> 188)
> at
>
> com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:
> 224)
> at
>
> com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:
> 62)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:713)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
> at
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
> 511)
> at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1166)
> at
>
> com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:
> 51)
> 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:
> 122)
> 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.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:
> 70)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:
> 152)
> at com.google.appengine.tools.development.JettyContainerService
> $ApiProxyHandler.handle(JettyContainerService.java:349)
> 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.content(HttpConnection.java:938)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
> 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)
> Caused by: java.security.AccessControlException: access denied
> (java.io.FilePermission /war/WEB-INF/web.xml read)
> at
>
> java.security.AccessControlContext.checkPermission(AccessControlContext.java:
> 323)
> at
> java.security.AccessController.checkPermission(AccessController.java:
> 546)
> at java.lang.SecurityManager.checkPermission(SecurityManager.java:
> 532)
> at com.google.appengine.tools.development.DevAppServerFactory
> $CustomSecurityManager.checkPermission(DevAppServerFactory.java:166)
> at java.lang.SecurityManager.checkRead(SecurityManager.java:871)
> at java.io.FileInputStream.<init>(FileInputStream.java:100)
> at java.io.FileInputStream.<init>(FileInputStream.java:66)
> at
> testFMIP.server.GreetingServiceImpl.getFileData(GreetingServiceImpl.java:
> 46)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
> 39)
> at
>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
> 25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
>
> com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:
> 100)
> at
> com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:
> 562)
> ... 30 more
>
> Jun 1, 2010 3:43:53 PM
> com.google.appengine.tools.development.ApiProxyLocalImpl log
> SEVERE: [1275432233460000] javax.servlet.ServletContext log: Exception
> while dispatching incoming RPC call
> com.google.gwt.user.server.rpc.UnexpectedException: Service method
> 'public abstract java.util.List
> testFMIP.client.GreetingService.getFileData()' threw an unexpected
> exception: java.security.AccessControlException: access denied
> (java.io.FilePermission /war/WEB-INF/web.xml read)
> at
> com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:
> 378)
> at
> com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:
> 581)
> at
>
> com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:
> 188)
> at
>
> com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:
> 224)
> at
>
> com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:
> 62)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:713)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
> at
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
> 511)
> at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1166)
> at
>
> com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:
> 51)
> 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:
> 122)
> 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.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:
> 70)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:
> 152)
> at com.google.appengine.tools.development.JettyContainerService
> $ApiProxyHandler.handle(JettyContainerService.java:349)
> 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.content(HttpConnection.java:938)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
> 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)
> Caused by: java.security.AccessControlException: access denied
> (java.io.FilePermission /war/WEB-INF/web.xml read)
> at
>
> java.security.AccessControlContext.checkPermission(AccessControlContext.java:
> 323)
> at
> java.security.AccessController.checkPermission(AccessController.java:
> 546)
> at java.lang.SecurityManager.checkPermission(SecurityManager.java:
> 532)
> at com.google.appengine.tools.development.DevAppServerFactory
> $CustomSecurityManager.checkPermission(DevAppServerFactory.java:166)
> at java.lang.SecurityManager.checkRead(SecurityManager.java:871)
> at java.io.FileInputStream.<init>(FileInputStream.java:100)
> at java.io.FileInputStream.<init>(FileInputStream.java:66)
> at
> testFMIP.server.GreetingServiceImpl.getFileData(GreetingServiceImpl.java:
> 46)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
> 39)
> at
>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
> 25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
>
> com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:
> 100)
> at
> com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:
> 562)
> ... 30 more
>
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