Android网络连接保持session测试

package com.wyb;

import org.apache.http.Header;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;


public class TestConnection extends Activity {
	private Button  btn ;
	private String sessionid = "";
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        btn =(Button) findViewById(R.id.button1);
        btn.setOnClickListener(new OnClickListener() {
			public void onClick(View v) {
				try {
					String url = "http://192.168.1.100:8080/WP001/ModuleAction!test.action";
					HttpGet httpRequest = new HttpGet(url);  
			        //取得HttpClient对象  
		            HttpClient httpclient = new DefaultHttpClient();  
		            //请求HttpClient，取得HttpResponse  
		            if(!"".equals(sessionid)){
		            	httpRequest.setHeader("Cookie", sessionid);
		            }
		            HttpResponse httpResponse = httpclient.execute(httpRequest);  
		            //请求成功  
		            if (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK)  
		            {  
		            	Header[] headers = httpResponse.getHeaders("set-cookie");
		            	 for (int i = 0; i < headers.length; i++) {
		            		Log.e("sessionid", ""+headers.length);
			            	Log.e("sessionid", headers[i].getValue());
			            	String value =headers[i].getValue();
			            	sessionid = value.substring(0, value.indexOf(";"));
		            	}
		            	Toast.makeText(TestConnection.this, "连接成功", Toast.LENGTH_SHORT);
		            }  
		            else 
		            {  
		            	Toast.makeText(TestConnection.this, "连接失败", Toast.LENGTH_SHORT);
		            }  
				} catch (Exception e) {
				}

	        } 
		});
    }
}