【发布时间】：2015-12-09 16:41:21
【问题描述】：
我正在尝试将我的 android 应用程序与本地主机上的 couchbase 服务器连接起来 我已按如下方式初始化数据库和管理器： 初始化数据库后，我正在调用 startSync() 函数接受数据库类型的参数
public static final String DB_NAME = "firstdb";
public static final String TAG = "firstdb";private void helloCBL() {
Manager manager = null;
Database database = null;
try {
manager = new Manager(new AndroidContext(this), Manager.DEFAULT_OPTIONS);
database = manager.getDatabase(DB_NAME);
database.addChangeListener(this);
startSync(database);
} catch (Exception e) {
Log.e(TAG, "Error getting database", e);
return;
}
}
这是 startSync() 函数
protected void startSync(Database database) {
URL syncUrl;
try {
syncUrl = new URL("http://10.0.2.2:4984/firstdb");
} catch (MalformedURLException e) {
throw new RuntimeException(e);
}
Replication pullReplication = database.createPullReplication(syncUrl);
pullReplication.setContinuous(true);
Replication pushReplication = database.createPushReplication(syncUrl);
pushReplication.setContinuous(true);
pullReplication.addChangeListener(this);
pushReplication.addChangeListener(this);
// start both replications
pullReplication.start();
pushReplication.start();
}
但是我的 logcat 出现错误如下： 我对在 android 应用程序中使用 url 感到困惑
12-10 02:36:16.930 4556-4588/com.couchbase.examples.couchdbapp E/RemoteRequest: io exception. url: http://10.0.2.2:4984/firstdb/_local/2b7e37db76812fef1b8c7ca3d4b30b99e570ea6f
12-10 02:36:16.930 4556-4588/com.couchbase.examples.couchdbapp E/RemoteRequest: org.apache.http.conn.ConnectTimeoutException: Connect to /10.0.2.2:4984 timed out
12-10 02:36:16.930 4556-4588/com.couchbase.examples.couchdbapp E/RemoteRequest: at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:121)
12-10 02:36:16.930 4556-4588/com.couchbase.examples.couchdbapp E/RemoteRequest: at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:144)
12-10 02:36:16.930 4556-4588/com.couchbase.examples.couchdbapp E/RemoteRequest: at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
12-10 02:36:16.930 4556-4588/com.couchbase.examples.couchdbapp E/RemoteRequest: at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
12-10 02:36:16.930 4556-4588/com.couchbase.examples.couchdbapp E/RemoteRequest: at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
12-10 02:36:16.930 4556-4588/com.couchbase.examples.couchdbapp E/RemoteRequest: at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
12-10 02:36:16.930 4556-4588/com.couchbase.examples.couchdbapp E/RemoteRequest: at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
12-10 02:36:16.930 4556-4588/com.couchbase.examples.couchdbapp E/RemoteRequest: at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
12-10 02:36:16.930 4556-4588/com.couchbase.examples.couchdbapp E/RemoteRequest: at com.couchbase.lite.support.RemoteRequest.executeRequest(RemoteRequest.java:184)
12-10 02:36:16.930 4556-4588/com.couchbase.examples.couchdbapp E/RemoteRequest: at com.couchbase.lite.support.RemoteRequest.run(RemoteRequest.java:103)
12-10 02:36:16.930 4556-4588/com.couchbase.examples.couchdbapp E/RemoteRequest: at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:390)
12-10 02:36:16.930 4556-4588/com.couchbase.examples.couchdbapp E/RemoteRequest: at java.util.concurrent.FutureTask.run(FutureTask.java:234)
12-10 02:36:16.930 4556-4588/com.couchbase.examples.couchdbapp E/RemoteRequest: at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:153)
12-10 02:36:16.930 4556-4588/com.couchbase.examples.couchdbapp E/RemoteRequest: at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:267)
12-10 02:36:16.930 4556-4588/com.couchbase.examples.couchdbapp E/RemoteRequest: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
12-10 02:36:16.930 4556-4588/com.couchbase.examples.couchdbapp E/RemoteRequest: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
12-10 02:36:16.930 4556-4588/com.couchbase.examples.couchdbapp E/RemoteRequest: at java.lang.Thread.run(Thread.java:856)
当我在 android 设备上运行应用程序时会发生这些错误。当我运行我的 模拟器上的应用程序它没有显示任何错误，但给出了详细的消息
12-10 13:13:03.482 3718-3770/com.couchbase.examples.couchdbapp W/Sync: com.couchbase.lite.replicator.PullerInternal@3139637: Received invalid doc ID from _changes: {seq=1, id=_user/, changes=[{rev=}]}
【问题讨论】：
-
看起来像网络问题。根据您运行应用程序的方式，ip 192.168.1.6 可能无法访问。例如，如果您在默认模拟器中运行应用程序，则主机的 ip 为 10.0.2.2。
-
@LaurentDoguin 我没有在模拟器中运行我的应用程序，而是在 android 设备上运行它
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@LaurentDoguin 我对要在 android 应用程序中使用的 url 完全感到困惑
-
如果您的设备在同一个网络上，那么要使用的 URL 将来自托管同步网关的机器。
-
@LaurentDoguin 我试过了，效果很好，但是如果我想访问另一个网络中的机器同步网关怎么办？
标签： android synchronization couchbase couchbase-lite couchbase-sync-gateway