CODEWITHSUNDEEP
androidhttphttpclienthttprequesthttpresponse
Lukap
Lukap

Reputation: 31963

HttpClient fails at execute method

It must be some idiotic thing that I am doing but I could not get it what is the problem...

My code snippet

try {
    HttpClient client = new DefaultHttpClient();
    HttpGet request = new HttpGet("http://somehost/WS2/Upload.aspx?one=valueGoesHere");
    client.execute(request);//it fails at this line
} catch (Exception e) {

and in my manifest I have internet access permission

from console

W/System.err( 4210): java.net.UnknownHostException: somehost
W/System.err( 4210):    at java.net.InetAddress.lookupHostByName(InetAddress.java:513)
W/System.err( 4210):    at java.net.InetAddress.getAllByNameImpl(InetAddress.java:278)
W/System.err( 4210):    at java.net.InetAddress.getAllByName(InetAddress.java:242)
W/System.err( 4210):    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:136)
W/System.err( 4210):    at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
W/System.err( 4210):    at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
W/System.err( 4210):    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:348)
W/System.err( 4210):    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
W/System.err( 4210):    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
W/System.err( 4210):    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
W/System.err( 4210):    at com.temp.services.httpclient.HttpGetDemo.onCreate(HttpGetDemo.java:29)
W/System.err( 4210):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1069)
W/System.err( 4210):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2751)
W/System.err( 4210):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2803)
W/System.err( 4210):    at android.app.ActivityThread.access$2300(ActivityThread.java:135)
W/System.err( 4210):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2136)
W/System.err( 4210):    at android.os.Handler.dispatchMessage(Handler.java:99)
W/System.err( 4210):    at android.os.Looper.loop(Looper.java:144)
W/System.err( 4210):    at android.app.ActivityThread.main(ActivityThread.java:4937)
W/System.err( 4210):    at java.lang.reflect.Method.invokeNative(Native Method)
W/System.err( 4210):    at java.lang.reflect.Method.invoke(Method.java:521)
W/System.err( 4210):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
W/System.err( 4210):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
W/System.err( 4210):    at dalvik.system.NativeStart.main(Native Method)
I/ActivityManager(  120): Displayed activity com.temp.services/.httpclient.HttpGetDemo: 119 ms (total 304 ms)

Upvotes: 1

Views: 11596

Answers (7)

Yi Feng Xie
Yi Feng Xie

Reputation: 5017

Try to add the following before your http request code

StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);

Upvotes: 4

Ido
Ido

Reputation: 213

You should make sure your are not running on your main thread, check if you get this exception: android.os.NetworkOnMainThreadException

Upvotes: 1

Joe Plante
Joe Plante

Reputation: 11

Don't forget to declare the INTERNET permission in the Android manifest:

<uses-permission android:name="android.permission.INTERNET"/>

Upvotes: 1

Mathieu de Brito
Mathieu de Brito

Reputation: 2696

ok, What about trying this :

URL uri = new URL(rootUri);
HttpURLConnection connection = (HttpURLConnection) uri.openConnection();
connection.setRequestMethod("GET");
connection.setDoInput(true);
connection.connect();

Upvotes: 0

Arun Badole
Arun Badole

Reputation: 11097

The Problem is with URL.As it shows in Log Exception is 

java.net.UnknownHostException: somehost

Try with your true URL.

& BTW www.google.com works fine

Upvotes: 0

Reno
Reno

Reputation: 33792

Assuming that the URL is a valid one, I suggest that you should call : 

try {
    InetAddress address = InetAddress.getByName(url);

    } catch (UnknownHostException e) {
        e.printStackTrace();
    }

This is DNS pre-fetching so that your device can resolve it URl to an IP address.

Although this isn't enough for it to guarantee to work. What actually worked for me is a retrying mechanism. Give it some good old F5 F5 F5 F5 till the website responds :D

Upvotes: 0

Mathieu de Brito
Mathieu de Brito

Reputation: 2696

Do you execute this request in the emulator or on an android device ? if it's on the emulator, maybe the internet connection is not shared with it.

If it's on an android device, seems you don't have internet access ( not the permission, just the access )

Upvotes: 0

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