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) {}        } });    }}
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