Loopj Async HTTP 库有一个奇怪的问题。我有时会使用 GET 或 POST 获得响应,有时响应会在很长一段时间后出现,有时响应根本不会出现。仅在使用 wifi 时才会发生这种情况。我在很多项目中都使用了 loopj,这些项目在 wifi 上都可以正常工作,但在这个项目中却不行。当我使用我的移动数据 3G 连接时,总是会有响应。我已经覆盖了 onFaliure 方法,这是当服务器没有响应时得到的:
E/statusCode(31980): 0
E/headers(31980): null
E/Throwable(31980): org.apache.http.conn.ConnectTimeoutException: Connect to .. timed out
E/errorResponse(31980): null
异常也会打印在 logcat 上:
04-16 10:58:18.795: W/System.err(31980): org.apache.http.conn.ConnectTimeoutException: Connect to .. timed out
04-16 10:58:18.795: W/System.err(31980): at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:121)
04-16 10:58:18.795: W/System.err(31980): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:144)
04-16 10:58:18.795: W/System.err(31980): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
04-16 10:58:18.795: W/System.err(31980): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
04-16 10:58:18.795: W/System.err(31980): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
04-16 10:58:18.795: W/System.err(31980): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:670)
04-16 10:58:18.800: W/System.err(31980): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:509)
04-16 10:58:18.800: W/System.err(31980): at com.loopj.android.http.AsyncHttpRequest.makeRequest(AsyncHttpRequest.java:74)
04-16 10:58:18.800: W/System.err(31980): at com.loopj.android.http.AsyncHttpRequest.makeRequestWithRetries(AsyncHttpRequest.java:91)
04-16 10:58:18.800: W/System.err(31980): at com.loopj.android.http.AsyncHttpRequest.run(AsyncHttpRequest.java:54)
04-16 10:58:18.800: W/System.err(31980): at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:390)
04-16 10:58:18.800: W/System.err(31980): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
04-16 10:58:18.800: W/System.err(31980): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
04-16 10:58:18.800: W/System.err(31980): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
04-16 10:58:18.800: W/System.err(31980): at java.lang.Thread.run(Thread.java:841)
04-16 10:58:18.800: V/JsonHttpResponseHandler(31980): response body is null, calling onFailure(Throwable, JSONObject)
如果可以显示一些解决方案,我将不胜感激。