我有問題,使用的是Android類HttpURLConnection的我的方法是這樣的:HttpURLConnection的致命錯誤
public InputStream test() {
URL url = null;
try {
url = new URL("http://www.android.com/");
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
HttpURLConnection urlConnection = null;
try {
urlConnection = (HttpURLConnection) url.openConnection();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
InputStream in= null;
try {
in = new BufferedInputStream(urlConnection.getInputStream());
}catch(IOException e){
e.printStackTrace();
}
finally {
urlConnection.disconnect();
}
return in;
}
當我執行這種方法的android產生此異常:
05-03 15:15: 19.116:W/System.err(1085):android.os.NetworkOnMainThreadException 05-03 15:15:19.116:W/System.err(1085):在android.os.StrictMode $ AndroidBlockGuardPolicy.onNetwork(StrictMode.java: 1099) 05-03 15:15:19.116:W/System.err(1085):at java.net.InetAddress.lookupHostByName( InetAddress.java:391) 05-03 15:15:19.116:W/System.err(1085):at java.net.InetAddress.getAllByNameImpl(InetAddress.java:242) 05-03 15:15:19.116: W/System.err(1085):在java.net.InetAddress.getAllByName(InetAddress.java:220) 05-03 15:15:19.126:W/System.err(1085):在libcore.net.http。 HttpConnection。(HttpConnection.java:71) 05-03 15:15:19.126:W/System.err(1085):at libcore.net.http.HttpConnection。(HttpConnection.java:50) 05-03 15: 15:19.126:W/System.err(1085):at libcore.net.http.HttpConnection $ Address.connect(HttpConnection.java:351) 05-03 15:15:19.126:W/System.err(1085) :在libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:86) 05-03 15:15:19.126:W/System.err(1085):在libcore.net.http.HttpConnection.connect(HttpConnection。 java:128) 05-03 15:15:19.126:W/System.err(1085):at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:308) 05-03 15:15:19.126:W/System。 err(1085):在libcore.net.http.HttpEngine.connect(HttpEngine.java:303) 05-03 15:15:19.126:W/System.err(1085):位於libcore.net.http.HttpEngine。 sendSocketRequest(HttpEngine.java:282) 05-03 15:15:19.126:W/System.err(1085):at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:232) 05-03 15: 15:19.126:W/System.err(1085):at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:273) 05-03 15:15:19.136:W/System.err(1085):at libcore.net.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:168) 05-03 15:15:19.136:W/System.err(1085):at com.BertacchiMazzoni.HTTPClient.HttpClientTutorial.tes t(HttpClientTutorial.java:35) 05-03 15:15:19.136:W/System.err(1085):at com.BertacchiMazzoni.HTTPClient.HTTPClientActivity.onCreate(HTTPClientActivity.java:18) 05-03 15: 15:19.136:W/System.err(1085):在android.app.Activity.performCreate(Activity.java:4465) 05-03 15:15:19.136:W/System.err(1085):在android。 app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049) 05-03 15:15:19.136:W/System.err(1085):at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920) 05-03 15:15:19.136:W/System.err(1085):at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981) 05-03 15:15:19.136:W/System.err(1085):at android.app.ActivityThread.access $ 600(ActivityThread.java:123) 05-03 15:15:19.136:W/System.err(1085):at android .app.ActivityThread $ H.handleMessage(ActivityThread.java:1147) 05-03 15:15:19.146:W/System.err(1085):at android.os.Handler.dispatchMessage(Handler.java:99) 05-03 15:15:19.146:W/System.err(1085):at android.os.Looper.loop(Looper.java:137) 05-03 15:15:19.146:W/System.err(1085 ):at android.app.ActivityThread.main(ActivityThread.java:4424) 05-03 15:15:19.146:W/System.err(1085):at java.lang.reflect.Method.invokeNative(Native Method) W/System.err(1085):at java.lang.reflect.Method.invoke(Method.java:511) 05-03 15:15:19.146:W/System。 err(1085):at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:784) 05-03 15:15:19.146:W/System.err(1085):at com.android。 internal.os.ZygoteInit.main(ZygoteInit。Java的:551) 05-03 15:15:19.146:W/System.err的(1085):在dalvik.system.NativeStart.main(本機方法)
我能解決這個問題呢?錯誤在哪裏?
非常感謝! 關心!
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