java.io.IOException: el desafío de autenticación recibido es nulo
Necesito obtener un código de respuesta, pero es una excepción IOException. ¡No sé cuál es el problema!
<code> try { url = new URL(urlBuilder.toString()); conn = (HttpURLConnection) url.openConnection(); conn.setDoInput(true); conn.setConnectTimeout(TIME_OUT); conn.setRequestMethod(METHOD_GET); conn.setRequestProperty("accept", "*/*"); conn.connect(); int responseCode = conn.getResponseCode(); //throw IOException:Received authentication challenge is null if (responseCode == HTTP_OK) { inStream = conn.getInputStream(); response = getResponse(inStream); } else { response = "response code:"+responseCode; } } catch (Exception e) { throw e; } finally { conn.disconnect(); } return response; } </code>
La excepción IOException es:
<code>05-03 20:14:01.577: WARN/System.err(1515): java.io.IOException: Received authentication challenge is null 05-03 20:14:01.596: WARN/System.err(1515): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.doRequestInternal(HttpURLConnectionImpl.java:1694) 05-03 20:14:01.577: INFO/QQWeiBo(1515): Received authentication challenge is null 05-03 20:14:01.577: WARN/System.err(1515): java.io.IOException: Received authentication challenge is null 05-03 20:14:01.577: WARN/System.err(1515): java.io.IOException: Received authentication challenge is null 05-03 20:14:01.596: WARN/System.err(1515): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.doRequestInternal(HttpURLConnectionImpl.java:1694) 05-03 20:14:01.596: WARN/System.err(1515): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.doRequest(HttpURLConnectionImpl.java:1649) 05-03 20:14:01.596: WARN/System.err(1515): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:1374) 05-03 20:14:01.596: WARN/System.err(1515): at com.szy.weibo.service.SyncHttp.httpGet(SyncHttp.java:72) 05-03 20:14:01.596: WARN/System.err(1515): at com.szy.weibo.service.Weibo.getRequestToken(Weibo.java:45) 05-03 20:14:01.606: WARN/System.err(1515): at com.szy.weibo.MainActivity.startWebView(MainActivity.java:95) 05-03 20:14:01.606: WARN/System.err(1515): at com.szy.weibo.MainActivity.authorization(MainActivity.java:83) 05-03 20:14:01.606: WARN/System.err(1515): at com.szy.weibo.MainActivity$1.onClick(MainActivity.java:71) 05-03 20:14:01.606: WARN/System.err(1515): at android.view.View.performClick(View.java:2408) 05-03 20:14:01.596: WARN/System.err(1515): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.doRequestInternal(HttpURLConnectionImpl.java:1694) 05-03 20:14:01.596: WARN/System.err(1515): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.doRequest(HttpURLConnectionImpl.java:1649) 05-03 20:14:01.596: WARN/System.err(1515): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:1374) 05-03 20:14:01.596: WARN/System.err(1515): at com.szy.weibo.service.SyncHttp.httpGet(SyncHttp.java:72) 05-03 20:14:01.596: WARN/System.err(1515): at com.szy.weibo.service.Weibo.getRequestToken(Weibo.java:45) 05-03 20:14:01.606: WARN/System.err(1515): at com.szy.weibo.MainActivity.startWebView(MainActivity.java:95) 05-03 20:14:01.606: WARN/System.err(1515): at com.szy.weibo.MainActivity.authorization(MainActivity.java:83) 05-03 20:14:01.606: WARN/System.err(1515): at com.szy.weibo.MainActivity$1.onClick(MainActivity.java:71) 05-03 20:14:01.606: WARN/System.err(1515): at android.view.View.performClick(View.java:2408) 05-03 20:14:01.596: WARN/System.err(1515): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.doRequest(HttpURLConnectionImpl.java:1649) 05-03 20:14:01.596: WARN/System.err(1515): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:1374) 05-03 20:14:01.596: WARN/System.err(1515): at com.szy.weibo.service.SyncHttp.httpGet(SyncHttp.java:72) 05-03 20:14:01.596: WARN/System.err(1515): at com.szy.weibo.service.Weibo.getRequestToken(Weibo.java:45) 05-03 20:14:01.606: WARN/System.err(1515): at com.szy.weibo.MainActivity.startWebView(MainActivity.java:95) 05-03 20:14:01.606: WARN/System.err(1515): at com.szy.weibo.MainActivity.authorization(MainActivity.java:83) 05-03 20:14:01.606: WARN/System.err(1515): at com.szy.weibo.MainActivity$1.onClick(MainActivity.java:71) 05-03 20:14:01.606: WARN/System.err(1515): at android.view.View.performClick(View.java:2408) 05-03 20:14:01.606: WARN/System.err(1515): at android.view.View$PerformClick.run(View.java:8816) 05-03 20:14:01.616: WARN/System.err(1515): at android.os.Handler.handleCallback(Handler.java:587) 05-03 20:14:01.627: WARN/System.err(1515): at android.os.Handler.dispatchMessage(Handler.java:92) 05-03 20:14:01.627: WARN/System.err(1515): at android.os.Looper.loop(Looper.java:123) 05-03 20:14:01.627: WARN/System.err(1515): at android.app.ActivityThread.main(ActivityThread.java:4627) 05-03 20:14:01.627: WARN/System.err(1515): at java.lang.reflect.Method.invokeNative(Native Method) 05-03 20:14:01.606: WARN/System.err(1515): at android.view.View$PerformClick.run(View.java:8816) 05-03 20:14:01.616: WARN/System.err(1515): at android.os.Handler.handleCallback(Handler.java:587) 05-03 20:14:01.627: WARN/System.err(1515): at android.os.Handler.dispatchMessage(Handler.java:92) 05-03 20:14:01.627: WARN/System.err(1515): at android.os.Looper.loop(Looper.java:123) 05-03 20:14:01.627: WARN/System.err(1515): at android.app.ActivityThread.main(ActivityThread.java:4627) 05-03 20:14:01.627: WARN/System.err(1515): at java.lang.reflect.Method.invokeNative(Native Method) 05-03 20:14:01.627: WARN/System.err(1515): at java.lang.reflect.Method.invoke(Method.java:521) 05-03 20:14:01.647: WARN/System.err(1515): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 05-03 20:14:01.647: WARN/System.err(1515): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 05-03 20:14:01.647: WARN/System.err(1515): at dalvik.system.NativeStart.main(Native Method) 05-03 20:14:01.606: WARN/System.err(1515): at android.view.View$PerformClick.run(View.java:8816) 05-03 20:14:01.616: WARN/System.err(1515): at android.os.Handler.handleCallback(Handler.java:587) 05-03 20:14:01.627: WARN/System.err(1515): at android.os.Handler.dispatchMessage(Handler.java:92) 05-03 20:14:01.627: WARN/System.err(1515): at android.os.Looper.loop(Looper.java:123) 05-03 20:14:01.627: WARN/System.err(1515): at android.app.ActivityThread.main(ActivityThread.java:4627) 05-03 20:14:01.627: WARN/System.err(1515): at java.lang.reflect.Method.invokeNative(Native Method) 05-03 20:14:01.627: WARN/System.err(1515): at java.lang.reflect.Method.invoke(Method.java:521) 05-03 20:14:01.647: WARN/System.err(1515): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 05-03 20:14:01.647: WARN/System.err(1515): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 05-03 20:14:01.647: WARN/System.err(1515): at dalvik.system.NativeStart.main(Native Method) 05-03 20:14:01.627: WARN/System.err(1515): at java.lang.reflect.Method.invoke(Method.java:521) 05-03 20:14:01.647: WARN/System.err(1515): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 05-03 20:14:01.647: WARN/System.err(1515): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 05-03 20:14:01.647: WARN/System.err(1515): at dalvik.system.NativeStart.main(Native Method) </code>