FileNotFoundException when calling webservice

Question

Hello I got past my initial problem. I'm a total android noob, this is my first app. I'm testing this on the Android emulator. I try to connect to a .NET webservice at http://192.168.3.47/service.asmx. I get a FileNotFoundException. But it IS there, the url is correct. How can I make him see that?

03-03 11:23:49.741: WARN/System.err(455): java.io.FileNotFoundException: http://192.168.3.47/service.asmx
03-03 11:23:49.751: WARN/System.err(455):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:521)
03-03 11:23:49.801: WARN/System.err(455):     at gyozo.HelloWorld.HelloActivity.onClick(HelloActivity.java:62)
03-03 11:23:49.831: WARN/System.err(455):     at android.view.View.performClick(View.java:2485)
03-03 11:23:49.851: WARN/System.err(455):     at android.view.View$PerformClick.run(View.java:9080)
03-03 11:23:49.871: WARN/System.err(455):     at android.os.Handler.handleCallback(Handler.java:587)
03-03 11:23:49.910: WARN/System.err(455):     at android.os.Handler.dispatchMessage(Handler.java:92)
03-03 11:23:49.940: WARN/System.err(455):     at android.os.Looper.loop(Looper.java:123)
03-03 11:23:49.950: WARN/System.err(455):     at android.app.ActivityThread.main(ActivityThread.java:3683)
03-03 11:23:50.010: WARN/System.err(455):     at java.lang.reflect.Method.invokeNative(Native Method)
03-03 11:23:50.050: WARN/System.err(455):     at java.lang.reflect.Method.invoke(Method.java:507)
03-03 11:23:50.070: WARN/System.err(455):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
03-03 11:23:50.090: WARN/System.err(455):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
03-03 11:23:50.110: WARN/System.err(455):     at dalvik.system.NativeStart.main(Native Method)

This happens here: InputStream is = connection.getInputStream();

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");

owr.write(soapRequest);
owr.flush();
owr.close();

//Get Response  
InputStream is = connection.getInputStream();

Answer 1

The HttpURLConnection class is misleading in that it will throw a FileNotFoundException for any HTTP error code of 400 or above.

So it's not necessarily an incorrect URL (404) it could be 400 (bad request), 403 (forbidden), 500 (internal server error) or something else.

Use the getResponseCode method to get a more precise indication of the problem.