Android：尝试HttpURLConnection.getOutputStream（）时抛出SocketException
这是我的第一个android程序，它是一个修改过的hello世界。 我在MAC上的模拟器上运行它。 我尝试与.NET Web服务进行通信，但它在connection.getOutputStream()给出了exception。 我可以从模拟器访问该站点。 任何帮助表示赞赏:)
URL url = new URL("http://192.168.3.47/service.asmx"); HttpURLConnection connection = (HttpURLConnection)url.openConnection(); connection.setRequestMethod("POST"); connection.setRequestProperty("Content-Type", "application/soap+xml; charset=utf-8"); connection.setUseCaches(false); connection.setDoInput(true); connection.setDoOutput(true); String soapRequest = String.format(getText(R.string.ws_listemain_ds_new).toString(), city, keyword); connection.setRequestProperty("Content-Length", Integer.toString(soapRequest.getBytes("UTF-8").length)); //Send request OutputStreamWriter owr = new OutputStreamWriter(connection.getOutputStream(), "UTF-8");
03-02 15:51:26.950: WARN/System.err(618): java.net.SocketException: Permission denied 03-02 15:51:26.978: WARN/System.err(618): at org.apache.harmony.luni.platform.OSNetworkSystem.socket(Native Method) 03-02 15:51:26.988: WARN/System.err(618): at dalvik.system.BlockGuard$WrappedNetworkSystem.socket(BlockGuard.java:335) 03-02 15:51:27.009: WARN/System.err(618): at org.apache.harmony.luni.net.PlainSocketImpl.create(PlainSocketImpl.java:216) 03-02 15:51:27.018: WARN/System.err(618): at java.net.Socket.checkOpenAndCreate(Socket.java:802) 03-02 15:51:27.037: WARN/System.err(618): at java.net.Socket.connect(Socket.java:948) 03-02 15:51:27.048: WARN/System.err(618): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection.(HttpConnection.java:75) 03-02 15:51:27.067: WARN/System.err(618): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection.(HttpConnection.java:48) 03-02 15:51:27.079: WARN/System.err(618): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection$Address.connect(HttpConnection.java:322) 03-02 15:51:27.139: WARN/System.err(618): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnectionPool.get(HttpConnectionPool.java:89) 03-02 15:51:27.158: WARN/System.err(618): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getHttpConnection(HttpURLConnectionImpl.java:285) 03-02 15:51:27.167: WARN/System.err(618): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.makeConnection(HttpURLConnectionImpl.java:267) 03-02 15:51:27.187: WARN/System.err(618): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:205) 03-02 15:51:27.197: WARN/System.err(618): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:614) 03-02 15:51:27.217: WARN/System.err(618): at gyozo.HelloWorld.HelloActivity.onClick(HelloActivity.java:55) 03-02 15:51:27.269: WARN/System.err(618): at android.view.View.performClick(View.java:2485) 03-02 15:51:27.311: WARN/System.err(618): at android.view.View$PerformClick.run(View.java:9080) 03-02 15:51:27.327: WARN/System.err(618): at android.os.Handler.handleCallback(Handler.java:587) 03-02 15:51:27.347: WARN/System.err(618): at android.os.Handler.dispatchMessage(Handler.java:92) 03-02 15:51:27.367: WARN/System.err(618): at android.os.Looper.loop(Looper.java:123) 03-02 15:51:27.447: WARN/System.err(618): at android.app.ActivityThread.main(ActivityThread.java:3683) 03-02 15:51:27.457: WARN/System.err(618): at java.lang.reflect.Method.invokeNative(Native Method) 03-02 15:51:27.519: WARN/System.err(618): at java.lang.reflect.Method.invoke(Method.java:507) 03-02 15:51:27.527: WARN/System.err(618): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 03-02 15:51:27.547: WARN/System.err(618): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 03-02 15:51:27.547: WARN/System.err(618): at dalvik.system.NativeStart.main(Native Method)
尝试在AndroidManifest.xml上添加“internet”权限：