Android中使用Post请求的方法

package com.justsy.url;import java.io.IOException;import java.util.ArrayList;import java.util.List;import org.apache.http.HttpResponse;import org.apache.http.NameValuePair;import org.apache.http.client.ClientProtocolException;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.protocol.HTTP;import org.apache.http.util.EntityUtils;import android.app.Activity;import android.os.Bundle;public class HttpURLActivity extends Activity {  @Override  public void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    System.out.println("start url...");    String url = "http://192.168.2.112:8080/JustsyApp/Applet";    // 第一步，创建HttpPost对象    HttpPost httpPost = new HttpPost(url);    // 设置HTTP POST请求参数必须用NameValuePair对象    List<NameValuePair> params = new ArrayList<NameValuePair>();    params.add(new BasicNameValuePair("action", "downloadAndroidApp"));    params.add(new BasicNameValuePair("packageId", "89dcb664-50a7-4bf2-aeed-49c08af6a58a"));    params.add(new BasicNameValuePair("uuid", "test_ok1"));    HttpResponse httpResponse = null;    try {      // 设置httpPost请求参数      httpPost.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));      httpResponse = new DefaultHttpClient().execute(httpPost);      //System.out.println(httpResponse.getStatusLine().getStatusCode());      if (httpResponse.getStatusLine().getStatusCode() == 200) {        // 第三步，使用getEntity方法活得返回结果        String result = EntityUtils.toString(httpResponse.getEntity());        System.out.println("result:" + result);        T.displayToast(HttpURLActivity.this, "result:" + result);      }    } catch (ClientProtocolException e) {      e.printStackTrace();    } catch (IOException e) {      e.printStackTrace();    }    System.out.println("end url...");    setContentView(R.layout.main);  }}

String path = "http://192.168.2.115:8080/android-web-server/httpConnectServlet.do?PackageID=89dcb664-50a7-4bf2-aeed-49c08af6a58a";URL url = new URL(path);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setRequestMethod("POST");conn.setConnectTimeout(5000);System.out.println(conn.getResponseCode());