Example for Restful web service authentication

dray · by **dray** » Wed Feb 16, 2011 11:11 am

Hi,
anyone help me how to POST authentication details to a restful web service and to get response from it.
I have to post Username, IsAuthenticated(ie. true or false), Password.Also explain the url encoding method too.
I have shown my code below.I am a Beginner in Android.

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Using java Syntax Highlighting

public class LoginActivity extends Activity
{
        String Username;
        String Password;
        String IsAuthenticated;
        String answer;
        
        @Override
         public void onCreate(Bundle savedInstanceState) {
               super.onCreate(savedInstanceState);
               setContentView(R.layout.main);
                        try {
                                POST(Username,Password,IsAuthenticated);
                        } catch (Exception e) {
                                e.printStackTrace();
                        }
          }
 
         
         public String POST(String Username, String IsAuthenticated, String Password) {
                 String Returned = null;
              HttpClient httpclient = new DefaultHttpClient();
              HttpPost httppost = new HttpPost("http://.................../Authenticate");
              
              try {
                 List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
                 // Your DATA
                 nameValuePairs.add(new BasicNameValuePair("UserName", "username"));
                 nameValuePairs.add(new BasicNameValuePair("IsAuthenticated", "false"));
                 nameValuePairs.add(new BasicNameValuePair("Password", "password"));
 
                 httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs, HTTP.UTF_8));
                 HttpResponse response = httpclient.execute(httppost);
                 HttpEntity resEntity = response.getEntity();
                 Returned = EntityUtils.toString(resEntity);
               
                System.out.println(Returned);
                 Toast.makeText(this, Returned, Toast.LENGTH_LONG).show();
              } catch (ClientProtocolException e) {
                 Toast.makeText(this, "There was an issue Try again later", Toast.LENGTH_LONG).show();
              } catch (IOException e) {
                 Toast.makeText(this, "There was an IO issue Try again later", Toast.LENGTH_LONG).show();
                 e.printStackTrace();
              }
              
              return Returned;
           }
}
Parsed in 0.036 seconds,  using GeSHi 1.0.8.4

Also I have got this error message.

: My Error Msg; error.tif (114.48 KiB) Viewed 3490 times

Thanks
DRAY

dray · by **dray** » Mon Feb 21, 2011 5:48 am

Hi all.
Finally I have successfully got the response from the web service.
I have posted my code below.

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package login.sample;
import java.io.IOException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.message.BasicHeader;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;
import android.app.Activity;
import android.os.Bundle;
import android.widget.Toast;
 
public class LoginActivity extends Activity
{
        String Returned;
        @Override
         public void onCreate(Bundle savedInstanceState) {
               super.onCreate(savedInstanceState);
               setContentView(R.layout.main);
                
              try {
                  HttpClient httpclient = new DefaultHttpClient();
                  HttpPost post = new HttpPost("http://Your url here/");
                  StringEntity str = new StringEntity("Your xml code");
                  str.setContentType("application/xml; charset=utf-8");
                  str.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE,"application/xml; charset=utf-8"));
                  post.setEntity(str);
                  HttpResponse response = httpclient.execute(post);
                  HttpEntity entity = response.getEntity();
                  Returned = EntityUtils.toString(entity);
                  Toast.makeText(this, Returned, Toast.LENGTH_LONG).show();
                } catch ( IOException ioe ) {
                 ioe.printStackTrace();
                }
              }
}
 
Parsed in 0.036 seconds,  using GeSHi 1.0.8.4

Hope this will helps you.

-DRAY-

darawalee · by **darawalee** » Mon Aug 08, 2011 5:36 pm

million thank!!!

James Andrew · by **James Andrew** » Tue Aug 09, 2011 8:48 am

Thanks for posting your code here, Dray. I have also struggled from similar kind of problem.

jhogue · by **jhogue** » Wed Aug 10, 2011 12:01 am

Thanks for the example

Example for Restful web service authentication

Example for Restful web service authentication

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