android platforms HttpGet and HttpPost request instances

  • 2020-05-30 21:02:52
  • OfStack

An example of http communication using the HttpGet() method in HttpClient:


/**  
 *description : Android HttpGet()  
 *authour:YanEr ・ Gates  
 *website:https://www.ofstack.com
 */ 
package me.gogogoog;  
import java.io.IOException;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
public class MyHttpGetActivity extends Activity{
 /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState){  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.result);

        TextView resultText = (TextView) this.findViewById(R.id.resultText);          
        String username="username";  
        String password="password";  
        String httpUrl = "http://192.168.1.90:8080/AndroidLogin/loginAction.do?method=login&username="+username+"&password="+password;    
        // create httpRequest object  
        HttpGet httpRequest = new HttpGet(httpUrl);
  try
  {
   // achieve HttpClient object 
   HttpClient httpclient = new DefaultHttpClient();
   // request HttpClient , HttpResponse
   HttpResponse httpResponse = httpclient.execute(httpRequest);
   // The request is successful 
   if (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK)
   {
    // Gets the returned string 
    String strResult = EntityUtils.toString(httpResponse.getEntity());
    resultText.setText(strResult);
   }
   else
   {
    resultText.setText(" Request error !");
   }
  }
  catch (ClientProtocolException e)
  {
   resultText.setText(e.getMessage().toString());
  }
  catch (IOException e)
  {
   resultText.setText(e.getMessage().toString());
  }
  catch (Exception e)
  {
   resultText.setText(e.getMessage().toString());
  }   
    }
}

An example of http communication using the HttpPost() method in HttpClient:
/**  
*description : Android HttpPost()  
*authour:YanEr ・ Gates  
*website:https://www.ofstack.com
*/ 
package me.gogogoog;  
import java.io.IOException;  
import java.util.ArrayList;  
import java.util.List;  
import org.apache.http.HttpEntity;  
import org.apache.http.HttpResponse;  
import org.apache.http.HttpStatus;  
import org.apache.http.NameValuePair;  
import org.apache.http.client.ClientProtocolException;  
import org.apache.http.client.HttpClient;  
import org.apache.http.client.entity.UrlEncodedFormEntity;  
import org.apache.http.client.methods.HttpPost;  
import org.apache.http.impl.client.DefaultHttpClient;  
import org.apache.http.message.BasicNameValuePair;  
import org.apache.http.util.EntityUtils;  
import android.app.Activity;  
import android.widget.TextView;  

public class ResultActivity extends Activity{  
    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState){  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.result);  
        TextView resultText = (TextView) this.findViewById(R.id.resultText);                  
        String username="username";  
        String password="password";  
        String httpUrl = "http://192.168.1.90:8080/AndroidLogin/loginAction.do?method=login";  
        // create httpRequest object   
        HttpPost httpRequest = new HttpPost(httpUrl);  

        List<NameValuePair> params = new ArrayList<NameValuePair>();  
        params.add(new BasicNameValuePair("username", username));  
        params.add(new BasicNameValuePair("password", password));  
        try{  
            // Set character set   
            HttpEntity httpentity = new UrlEncodedFormEntity(params, "gb2312");  
            // request httpRequest  
            httpRequest.setEntity(httpentity);  
            // Get the default HttpClient  
            HttpClient httpclient = new DefaultHttpClient();  
            // achieve HttpResponse  
            HttpResponse httpResponse = httpclient.execute(httpRequest);  
            //HttpStatus.SC_OK Means the connection was successful   
            if (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK){  
                // Gets the returned string   
                String strResult = EntityUtils.toString(httpResponse.getEntity());  
                resultText.setText(strResult);  
            }else{  
                resultText.setText(" Request error !");  
            }  
        }catch (ClientProtocolException e){  
            resultText.setText(e.getMessage().toString());  
        } catch (IOException e){  
            resultText.setText(e.getMessage().toString());  
        }catch (Exception e){  
            resultText.setText(e.getMessage().toString());  
        }   
    }  
} 


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