要的Andr​​oid RPC AppEngine上的Nullponter服务器 [英] Android to Appengine RPC Nullponter on server

问题描述

我有一个AppEngine上连接的Andorid项目，以使服务器和Android设备之间的RPC调用。当我正在呼叫的GWT客户端的一切完美的作品，但是当我从Android应用程序做呼叫服务器抛出这个空指针异常。我正在做一个Requestfactory RPC调用。 GAE 1.5.2版

I have a Appengine connected Andorid project, to enable RPC calls between the server and the Android device. When I'm doing calls on the GWT client everything works perfectly, but when I'm doing calls from the Android app the server throws this nullpointer exception. I'm making RPC calls with a Requestfactory. GAE version 1.5.2

[ERROR] Unexpected error
java.lang.NullPointerException
    at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:768)
    at com.google.web.bindery.requestfactory.server.ServiceLayerCache.getOrCache(ServiceLayerCache.java:225)
    at com.google.web.bindery.requestfactory.server.ServiceLayerCache.resolveRequestFactory(ServiceLayerCache.java:198)
    at com.google.web.bindery.requestfactory.server.SimpleRequestProcessor.process(SimpleRequestProcessor.java:203)
    at com.google.web.bindery.requestfactory.server.SimpleRequestProcessor.process(SimpleRequestProcessor.java:127)
    at com.google.web.bindery.requestfactory.server.RequestFactoryServlet.doPost(RequestFactoryServlet.java:133)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
    at com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:35)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:58)
    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$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.tools.development.BackendServersFilter.doFilter(BackendServersFilter.java:97)
    at org.mortbay.jetty.servlet.ServletHandler$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$ApiProxyHandler.handle(JettyContainerService.java:351)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at org.mortbay.jetty.Server.handle(Server.java:326)
    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
    at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:938)
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java: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)

现在的问题是，该堆栈跟踪不提供有关在我的code一些问题的任何信息。

The problem is that the stack trace doesn't provide any information about some issues in my code.

我想要做的是从Android客户端发送的例外AppEngine上服务器。所以这是Android的一侧code。

What I want to do is to send an Exception from the Android Client to the AppEngine Server. So that's the android side code.

new AsyncTask<Void, Void, Void>() {

            @Override
            protected Void doInBackground(Void... arg0) {
                MyRequestFactory factory = (MyRequestFactory) Util
                .getRequestFactory(context,
                        MyRequestFactory.class);
                ExceptionRequest request = factory.exceptionRequest();

                ExceptionProxy ep = request.create(ExceptionProxy.class);
                ep.setClassName(aThrowable.getClass().getSimpleName());
                ep.setRevision(1);
                ep.setVersionName("2.1.2");
                ep.setStack("");

                request.updateException(ep).fire();
                return null;
            }

        }.execute();

和抛出该异常（内部服务器错误）

And that throws this exception (Internal Server Error)

09-05 22:29:36.104: ERROR/AndroidRuntime(602): Caused by: java.lang.RuntimeException: Internal Server Error
09-05 22:29:36.104: ERROR/AndroidRuntime(602):     at com.google.web.bindery.requestfactory.shared.Receiver.onFailure(Receiver.java:44)
09-05 22:29:36.104: ERROR/AndroidRuntime(602):     at com.google.web.bindery.requestfactory.shared.impl.AbstractRequestContext.fail(AbstractRequestContext.java:677)
09-05 22:29:36.104: ERROR/AndroidRuntime(602):     ... 13 more

做RPC Web客户端上完美的作品，但在Android上一个我无法得到它的工作。

Doing RPC on the web client works perfectly but on the Android one I can't get it to work.

推荐答案

这是因为GAE的版本。它更新到1.6.1。

It's because of the version of the GAE. Update it to 1.6.1.

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