Question

我正在尝试使用servlet执行get请求，但是我遇到Communication Error（1001） - 处理连接时出错。

我的代码非常简单：

    Engine.getInstance().getRegisteredClients().clear();
    Engine.getInstance().getRegisteredClients().add(new HttpsClientHelper(null));

    ClientResource cr = new ClientResource(URI);
    cr.setRequestEntityBuffering(true);
    cr.setChallengeResponse(ChallengeScheme.HTTP_BASIC, 
            SensorUpdaterApp.getInstance().GOOGLE_ACCOUNT_EMAIL, 
            SensorUpdaterApp.getInstance().GOOGLE_ACCOUNT_TOKEN);
    DataTableResource resource = cr.wrap(DataTableResource.class);

    Long newId = null;
    try{
        newId = resource.createDataset();
    } catch(Exception e){ e.printStackTrace(); }

这是我在logcat中得到的堆栈跟踪：

08-16 13:21:24.221: I/org.restlet(11223): Starting the internal [HTTPS/1.1] client
    08-16 13:21:24.311: D/dalvikvm(11223): GC_FOR_MALLOC freed 9361 objects / 434480 bytes in 59ms
    08-16 13:21:24.391: D/dalvikvm(11223): GC_FOR_MALLOC freed 444 objects / 16384 bytes in 54ms
    08-16 13:21:24.471: D/dalvikvm(11223): GC_FOR_MALLOC freed 505 objects / 18800 bytes in 53ms
    08-16 13:21:24.561: D/dalvikvm(11223): GC_FOR_MALLOC freed 703 objects / 26368 bytes in 41ms
    08-16 13:21:24.631: D/dalvikvm(11223): GC_FOR_MALLOC freed 870 objects / 32216 bytes in 41ms
    08-16 13:21:24.911: D/dalvikvm(11223): GC_FOR_MALLOC freed 15029 objects / 968672 bytes in 46ms
    08-16 13:21:25.241: I/org.restlet(11223): A recoverable error was detected (1001), attempting again in 2000 ms.
    08-16 13:21:25.731: D/dalvikvm(11223): GC_FOR_MALLOC freed 24605 objects / 1514848 bytes in 60ms
    08-16 13:21:27.531: I/org.restlet(11223): A recoverable error was detected (1001), attempting again in 2000 ms.
    08-16 13:21:28.491: D/dalvikvm(11223): GC_FOR_MALLOC freed 33569 objects / 1502352 bytes in 78ms
    08-16 13:21:29.821: W/System.err(11223): Communication Error (1001) - Error while processing a connection
    08-16 13:21:29.821: W/System.err(11223):    at org.restlet.resource.ClientResource.doError(ClientResource.java:611)
    08-16 13:21:29.821: W/System.err(11223):    at org.restlet.engine.resource.ClientInvocationHandler.invoke(ClientInvocationHandler.java:236)
    08-16 13:21:29.821: W/System.err(11223):    at $Proxy5.createDataset(Native Method)
    08-16 13:21:29.821: W/System.err(11223):    at com.sensorupdater2.activities.main.CreateNewDatasetAsyncTask.doInBackground(CreateNewDatasetAsyncTask.java:38)
    08-16 13:21:29.821: W/System.err(11223):    at com.sensorupdater2.activities.main.CreateNewDatasetAsyncTask.doInBackground(CreateNewDatasetAsyncTask.java:1)
    08-16 13:21:29.821: W/System.err(11223):    at android.os.AsyncTask$2.call(AsyncTask.java:185)
    08-16 13:21:29.821: W/System.err(11223):    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
    08-16 13:21:29.831: W/System.err(11223):    at java.util.concurrent.FutureTask.run(FutureTask.java:137)
    08-16 13:21:29.831: W/System.err(11223):    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068)
    08-16 13:21:29.831: W/System.err(11223):    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561)
    08-16 13:21:29.831: W/System.err(11223):    at java.lang.Thread.run(Thread.java:1102)
    08-16 13:21:29.831: W/System.err(11223): Caused by: java.lang.NullPointerException
    08-16 13:21:29.831: W/System.err(11223):    at org.apache.harmony.xnet.provider.jsse.ClientSessionContext$HostAndPort.hashCode(ClientSessionContext.java:214)
    08-16 13:21:29.841: W/System.err(11223):    at java.util.HashMap.put(HashMap.java:393)
    08-16 13:21:29.841: W/System.err(11223):    at org.apache.harmony.xnet.provider.jsse.ClientSessionContext.putSession(ClientSessionContext.java:190)
    08-16 13:21:29.841: W/System.err(11223):    at org.apache.harmony.xnet.provider.jsse.ClientHandshakeImpl.unwrap(ClientHandshakeImpl.java:308)
    08-16 13:21:29.841: W/System.err(11223):    at org.apache.harmony.xnet.provider.jsse.SSLRecordProtocol.unwrap(SSLRecordProtocol.java:413)
    08-16 13:21:29.841: W/System.err(11223):    at org.apache.harmony.xnet.provider.jsse.SSLEngineImpl.unwrap(SSLEngineImpl.java:478)
    08-16 13:21:29.841: W/System.err(11223):    at javax.net.ssl.SSLEngine.unwrap(SSLEngine.java:383)
    08-16 13:21:29.841: W/System.err(11223):    at org.restlet.ext.ssl.internal.ReadableSslChannel.onDrain(ReadableSslChannel.java:114)
    08-16 13:21:29.841: W/System.err(11223):    at org.restlet.engine.io.Buffer.process(Buffer.java:553)
    08-16 13:21:29.841: W/System.err(11223):    at org.restlet.engine.io.Buffer.process(Buffer.java:668)
    08-16 13:21:29.841: W/System.err(11223):    at org.restlet.engine.io.ReadableBufferedChannel.read(ReadableBufferedChannel.java:172)
    08-16 13:21:29.841: W/System.err(11223):    at org.restlet.engine.io.Buffer.fill(Buffer.java:391)
    08-16 13:21:29.851: W/System.err(11223):    at org.restlet.engine.connector.InboundWay.onFill(InboundWay.java:278)
    08-16 13:21:29.851: W/System.err(11223):    at org.restlet.engine.io.Buffer.process(Buffer.java:597)
    08-16 13:21:29.851: W/System.err(11223):    at org.restlet.engine.io.Buffer.process(Buffer.java:668)
    08-16 13:21:29.851: W/System.err(11223):    at org.restlet.engine.connector.Way.processIoBuffer(Way.java:477)
    08-16 13:21:29.851: W/System.err(11223):    at org.restlet.engine.connector.InboundWay.processIoBuffer(InboundWay.java:353)
    08-16 13:21:29.851: W/System.err(11223):    at org.restlet.engine.connector.Way.onSelected(Way.java:430)
    08-16 13:21:29.851: W/System.err(11223):    at org.restlet.engine.connector.ConnectionController.controlConnections(ConnectionController.java:105)
    08-16 13:21:29.851: W/System.err(11223):    at org.restlet.engine.connector.ConnectionController.doRun(ConnectionController.java:156)
    08-16 13:21:29.851: W/System.err(11223):    at org.restlet.engine.connector.Controller.run(Controller.java:158)
    08-16 13:21:29.851: W/System.err(11223):    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
    08-16 13:21:29.851: W/System.err(11223):    ... 5 more
    08-16 13:21:31.181: D/dalvikvm(11223): GC_FOR_MALLOC freed 31659 objects / 1496144 bytes in 101ms
    08-16 13:21:31.181: I/org.restlet(11223): Stopping the internal[HTTPS/1.1] client

在我的libs目录中，我有：

gcm.jar
org.restlet.ext.httpclient.jar - 可能没用“
org.restlet.ext.net.jar - 可能没用“
org.restlet.ext.ssl.jar
org.restlet.jar

我用其他客户端测试了服务器，它似乎正常工作

有什么想法吗？

Answer 1

我发现只导入org.restlet.ext.net.HttpClientHelper同时使HTTPS和HTTP工作，所以你可能想尝试一下（但要小心 - 这种行为会根据导入的HttpClientHelper而改变。）

如果您故意想要使用org.restlet.ext.ssl.HttpsClientHelper，那么您还需要导入org.jsslutils_1.0库。如果你没有，那么连接只会永远超时（至少这是我在Android上使用Restlet 2.1.0进行测试时看到的）。

Restlet 2.1.0 download中的readme.txt显示了每个JAR的依赖关系。 org.restlet.ext.ssl依赖于jsslutils：

org.restlet.ext.ssl（Restlet Extension - SSL）
- org.jsslutils_1.0

仅供参考，Restlet下载还包括所有依赖库，因此您可以从那里获取它们。

以下是我在测试时发现的其他一些杂项：

确保导入并使用正确的连接器（当我导入`HttpClientHelper Eclipse时，我提供了4个不同的连接器）。 Restlet wiki连接器页面列出了可用的服务器和客户端连接器：
http://wiki.restlet.org/docs_1.1/13-restlet/27-restlet/37-restlet.html
当我尝试org.restlet.ext.httpclient.HttpClientHelper时，我认为我不需要为HTTP连接器导入所有依赖项（可能是因为我只使用客户端部分）。
确保所有JAR都来自相同的Restlet版本，否则您可能会遇到奇怪的错误。
如果您只导入org.restlet.ext.httpclient.HttpClientHelper连接器而不是HTTPS连接器，则会看到java.lang.IllegalStateException: Scheme 'https' not registered。

Android Restlet HTTPS - 通信错误（1001） - 处理连接时出错

1 个答案: