Hi Guys,
Im trying to store and image with GWT to Google App engine, I'm using
the packages:
commons-codec-1.4.jar
commons-fileupload-1.2.1.jar
commons-io-1.4.jar
to get the widgets from the formPanel that I'm sending to the server
which contain the widgets FileUpload that has my image.
When I'm using this packages to recover the image and store it I've
the following error:
java.lang.NoClassDefFoundError: java.rmi.server.UID is a restricted
class. Please see the Google App Engine developer's guide for more
details.
at
com.google.apphosting.runtime.security.shared.stub.java.rmi.server.UID.<clinit>
(UID.java)
at org.apache.commons.fileupload.disk.DiskFileItem.<clinit>
(DiskFileItem.java:103)
at org.apache.commons.fileupload.disk.DiskFileItemFactory.createItem
(DiskFileItemFactory.java:196)
at org.apache.commons.fileupload.FileUploadBase.parseRequest
(FileUploadBase.java:358)
at
org.apache.commons.fileupload.servlet.ServletFileUpload.parseRequest
(ServletFileUpload.java:126)
at com.handizo.server.service.FileUploadAnnouncementServlet.doPost
(FileUploadAnnouncementServlet.java:37)
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:
487)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
(ServletHandler.java:1093)
at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter
(SaveSessionFilter.java:35)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
(ServletHandler.java:1084)
at
com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter
(TransactionCleanupFilter.java:43)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
(ServletHandler.java:1084)
at org.mortbay.jetty.servlet.ServletHandler.handle
(ServletHandler.java:360)
at org.mortbay.jetty.security.SecurityHandler.handle
(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle
(SessionHandler.java:181)
at org.mortbay.jetty.handler.ContextHandler.handle
(ContextHandler.java:712)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
405)
at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle
(AppVersionHandlerMap.java:238)
at org.mortbay.jetty.handler.HandlerWrapper.handle
(HandlerWrapper.java:139)
at org.mortbay.jetty.Server.handle(Server.java:313)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:
506)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete
(HttpConnection.java:830)
at com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable
(RpcRequestParser.java:76)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381)
at
com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest
(JettyServletEngineAdapter.java:139)
at com.google.apphosting.runtime.JavaRuntime.handleRequest
(JavaRuntime.java:239)
at com.google.apphosting.base.RuntimePb$EvaluationRuntime
$6.handleBlockingRequest(RuntimePb.java:5235)
at com.google.apphosting.base.RuntimePb$EvaluationRuntime
$6.handleBlockingRequest(RuntimePb.java:5233)
at com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest
(BlockingApplicationHandler.java:24)
at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:
363)
at com.google.net.rpc.impl.Server$2.run(Server.java:838)
at com.google.tracing.LocalTraceSpanRunnable.run
(LocalTraceSpanRunnable.java:56)
at com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan
(LocalTraceSpanBuilder.java:536)
at com.google.net.rpc.impl.Server.startRpc(Server.java:793)
at com.google.net.rpc.impl.Server.processRequest(Server.java:368)
at com.google.net.rpc.impl.ServerConnection.messageReceived
(ServerConnection.java:448)
at com.google.net.rpc.impl.RpcConnection.parseMessages
(RpcConnection.java:319)
at com.google.net.rpc.impl.RpcConnection.dataReceived
(RpcConnection.java:290)
at com.google.net.async.Connection.handleReadEvent(Connection.java:
466)
at com.google.net.async.EventDispatcher.processNetworkEvents
(EventDispatcher.java:759)
at com.google.net.async.EventDispatcher.internalLoop
(EventDispatcher.java:205)
at com.google.net.async.EventDispatcher.loop(EventDispatcher.java:
101)
at com.google.net.rpc.RpcService.runUntilServerShutdown
(RpcService.java:251)
at com.google.apphosting.runtime.JavaRuntime$RpcRunnable.run
(JavaRuntime.java:396)
at java.lang.Thread.run(Unknown Source)
This " java.rmi.server.UID" class is not in the jre class white list
of Google App Engine, this mean that I can't use these packages
because they need this class?
In that case how I can get the image from the GWT, concretely from a
PanelForm without using these classes??
This is my server code:
@SuppressWarnings("unchecked")
protected void doPost(HttpServletRequest req, HttpServletResponse
resp)
throws ServletException, IOException {
// Create a factory for disk-based file items and an upload
handler
DiskFileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
// Parse the request to retrieve the individual items
List<FileItem> items;
try {
items = upload.parseRequest(req);
} catch (FileUploadException e) {
throw new ServletException("File upload failed", e);
}
// handle the individual items appropriately
for (FileItem fileItem : items) {
}
}
Thanks in advance.
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