Question

我在尝试写入Google商店时收到了IOException

附加堆栈跟踪

java.io.IOException的在com.google.appengine.api.files.FileServiceImpl.translateException（FileServiceImpl.java:601）在com.google.appengine.api.files.FileServiceImpl.makeSyncCall（FileServiceImpl.java:574）在com.google.appengine.api.files.FileServiceImpl.create（FileServiceImpl.java:481）在com.google.appengine.api.files.FileServiceImpl.createNewGSFile（FileServiceImpl.java:151） at guestbook.StoreFileServlet.Insert（StoreFileServlet.java:106） at guestbook.StoreFileServlet.doPost（StoreFileServlet.java:76）在javax.servlet.http.HttpServlet.service（HttpServlet.java:637）在javax.servlet.http.HttpServlet.service（HttpServlet.java:717）在org.mortbay.jetty.servlet.ServletHolder.handle（ServletHolder.java:511）在org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter（ServletHandler.java:1166）在com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter（ParseBlobUploadFilter.java:102）在org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter（ServletHandler.java:1157）在com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter（SaveSessionFilter.java:35）在org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter（ServletHandler.java:1157）在com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter（TransactionCleanupFilter.java:43）在org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter（ServletHandler.java:1157）在org.mortbay.jetty.servlet.ServletHandler.handle（ServletHandler.java:388）在org.mortbay.jetty.security.SecurityHandler.handle（SecurityHandler.java:216）在org.mortbay.jetty.servlet.SessionHandler.handle（SessionHandler.java:182）在org.mortbay.jetty.handler.ContextHandler.handle（ContextHandler.java:765）在org.mortbay.jetty.webapp.WebAppContext.handle（WebAppContext.java:418）在com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle（AppVersionHandlerMap.java:249）在org.mortbay.jetty.handler.HandlerWrapper.handle（HandlerWrapper.java:152）在org.mortbay.jetty.Server.handle（Server.java:326）在org.mortbay.jetty.HttpConnection.handleRequest（HttpConnection.java:542） at org.mortbay.jetty.HttpConnection $ RequestHandler.headerComplete（HttpConnection.java:923）在com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable（RpcRequestParser.java:76）在org.mortbay.jetty.HttpConnection.handle（HttpConnection.java:404）在com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest（JettyServletEngineAdapter.java:135）在com.google.apphosting.runtime.JavaRuntime $ RequestRunnable.run（JavaRuntime.java:446）在com.google.tracing.TraceContext $ TraceContextRunnable.runInContext（TraceContext.java:449）在com.google.tracing.TraceContext $ TraceContextRunnable $ 1.run（TraceContext.java:455）在com.google.tracing.TraceContext.runInContext（TraceContext.java:695）在com.google.tracing.TraceContext $ AbstractTraceContextCallback.runInInheritedContextNoUnref（TraceContext.java:333）在com.google.tracing.TraceContext $ AbstractTraceContextCallback.runInInheritedContext（TraceContext.java:325）在com.google.tracing.TraceContext $ TraceContextRunnable.run（TraceContext.java:453）在com.google.apphosting.runtime.ThreadGroupPool $ PoolEntry.run（ThreadGroupPool.java:251）在java.lang.Thread.run（Thread.java:679）引起：com.google.apphosting.api.ApiProxy $ ApplicationException：ApplicationError：8：在java.lang.Thread.getStackTrace（Thread.java:1495）在com.google.apphosting.runtime.ApiProxyImpl.doSyncCall（ApiProxyImpl.java:237）在com.google.apphosting.runtime.ApiProxyImpl.access $ 000（ApiProxyImpl.java:68）在com.google.apphosting.runtime.ApiProxyImpl $ 1.run（ApiProxyImpl.java:182）在com.google.apphosting.runtime.ApiProxyImpl $ 1.run（ApiProxyImpl.java:180） at java.security.AccessController.doPrivileged（Native Method）在com.google.apphosting.runtime.ApiProxyImpl.makeSyncCall（ApiProxyImpl.java:180）在com.google.apphosting.runtime.ApiProxyImpl.makeSyncCall（ApiProxyImpl.java:68）在com.google.apphosting.api.ApiProxy.makeSyncCall（ApiProxy.java:101）在com.google.apphosting.api.ApiProxy.makeSyncCall（ApiProxy.java:50）在com.google.appengine.api.files.FileServiceImpl.makeSyncCall（FileServiceImpl.java:570） ......还有36个引起：com.google.apphosting.api.ApiProxy $ ApplicationException：ApplicationError：8：在com.google.apphosting.runtime.ApiProxyImpl $ AsyncApiFuture.failure（ApiProxyImpl.java:546）在com.google.net.rpc3.client.RpcStub $ RpcCallbackDispatcher $ 1.runInContext（RpcStub.java:788）在com.google.tracing.TraceContext $ TraceContextRunnable $ 1.run（TraceContext.java:455）在com.google.tracing.TraceContext.runInContext（TraceContext.java:695）在com.google.tracing.TraceContext $ AbstractTraceContextCallback.runInInheritedContextNoUnref（TraceContext.java:333）在com.google.tracing.TraceContext $ AbstractTraceContextCallback.runInInheritedContext（TraceContext.java:325）在com.google.tracing.TraceContext $ TraceContextRunnable.run（TraceContext.java:453）在com.google.net.rpc3.client.RpcStub $ RpcCallbackDispatcher.rpcFinished（RpcStub.java:828）在com.google.net.rpc3.client.RpcStub $ RpcCallbackDispatcher.failure（RpcStub.java:819）在com.google.net.rpc3.impl.client.RpcClientInternalContext.runCallbacks（RpcClientInternalContext.java:906）在com.google.net.rpc3.impl.client.RpcClientInternalContext.finishRpcAndNotifyApp(RpcClientInternalContext.java:809）在com.google.net.rpc3.impl.client.RpcNetChannel.afterFinishingActiveRpc(RpcNetChannel.java:1062）在com.google.net.rpc3.impl.client.RpcNetChannel.finishRpc(RpcNetChannel.java:908）在com.google.net.rpc3.impl.client.RpcNetChannel.handleResponse（RpcNetChannel.java:2265）在com.google.net.rpc3.impl.client.RpcNetChannel.messageReceived(RpcNetChannel.java:2077）在com.google.net.rpc3.impl.client.RpcNetChannel.access $ 2000（RpcNetChannel.java:147）在com.google.net.rpc3.impl.client.RpcNetChannel $ TransportCallback.receivedMessage（RpcNetChannel.java:3115）在com.google.net.rpc3.impl.client.RpcChannelTransportData $ TransportCallback.receivedMessage（RpcChannelTransportData.java:602）在com.google.net.rpc3.impl.wire.RpcBaseTransport.receivedMessage(RpcBaseTransport.java:420）在com.google.net.rpc3.impl.wire.RpcClientTcpTransport.parseOneMessage(RpcClientTcpTransport.java:773）在com.google.net.rpc3.impl.wire.RpcClientTcpTransport.parseMessages(RpcClientTcpTransport.java:651）在com.google.net.rpc3.impl.wire.RpcClientTcpTransport.access $ 100（RpcClientTcpTransport.java:38）在com.google.net.rpc3.impl.wire.RpcClientTcpTransport $ 1.dataReceived（RpcClientTcpTransport.java:293）在com.google.net.async3.SocketConnection.handleNetworkReadEvent（SocketConnection.java:843）在com.google.net.async3.SocketConnection.access $ 400（SocketConnection.java:40）在com.google.net.async3.SocketConnection $ NetworkReadHandlerImpl.run（SocketConnection.java:872）在com.google.net.eventmanager.AbstractFutureTask $ Sync.innerRun（AbstractFutureTask.java:260）在com.google.net.eventmanager.AbstractFutureTask.run（AbstractFutureTask.java:121）在com.google.net.eventmanager.EventManagerImpl.runTask（EventManagerImpl.java:576）在com.google.net.eventmanager.EventManagerImpl.internalRunWorkerLoop（EventManagerImpl.java:997）在com.google.net.eventmanager.EventManagerImpl.runWorkerLoop（EventManagerImpl.java:878）在com.google.net.eventmanager.WorkerThreadInfo.runWorkerLoop（WorkerThreadInfo.java:134）在com.google.net.eventmanager.EventManagerImpl $ WorkerThread.run（EventManagerImpl.java:1833）

代码如下

    FileService fileService = FileServiceFactory.getFileService();
    GSFileOptionsBuilder optionsBuilder = new GSFileOptionsBuilder()
      .setBucket("mybucket")
      .setKey(key)
      .setMimeType("text/html")
      .setAcl("public-read")
      .addUserMetadata("myfield1", "my field value");
    try {
        AppEngineFile writableFile = fileService.createNewGSFile(optionsBuilder.build());
        // Open a channel for writing
        boolean lockForWrite = false;
        FileWriteChannel writeChannel = fileService.openWriteChannel(writableFile, lockForWrite);
        PrintWriter out = new PrintWriter(Channels.newWriter(writeChannel, "UTF8"));
        out.println(value);
        out.close();
        writeChannel.closeFinally();
    } catch (IOException e) {
        // TODO Auto-generated catch block
    }

我正在使用App Engine SDK 1.6.4

由于

Answer 1

这已经解决了。这是典型的不耐烦的新手问题：）

我没有做的是将我的应用程序授权给Google云存储项目[我错过了]。

参见

的先决条件5

https://developers.google.com/appengine/docs/java/googlestorage/overview

Answer 2

我通过使用App Engine SDK 1.7而不是1.6.3.1（导致问题）解决了这个问题

我的代码没有任何变化。只需将App Engine SDK版本更改为1.7。

在servlet中调用createNewGSFile（）时发生IOException

2 个答案: