JDOM搭配HttpClient Post

今天要把Android上的某字串以XML的方式POST給Server，使用了JDOM(要先下載\並匯入.jar檔)將訊息建立成XML格式後存入字串變數，再以Post的方式給Server，如以下:

package com.fff;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
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.protocol.HTTP;
import org.apache.http.util.EntityUtils;
import org.jdom2.Document;
import org.jdom2.Element;
import org.jdom2.JDOMException;
import org.jdom2.output.XMLOutputter;




import android.app.Activity;
import android.os.Bundle;
import android.util.Log;


public class JOM_POST_Test1Activity extends Activity {
    /** Called when the activity is first created. */
 String aa="";
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        try {
          BuildXMLDoc();
        } catch (Exception e) {
            e.printStackTrace();
        }
        
 
        final  String TAG = "ApacheHttpClientTest";
     String response = "";
     

      String url = "http://10.40.204.137:8080/project/test";
      
      List params = new ArrayList();
      params.add(new BasicNameValuePair("id",aa));
      params.add(new BasicNameValuePair("name","kuka"));
      try
      {
       response = httpPost(url, params);
      } catch (Exception e)
      {
       e.printStackTrace();
      }
      Log.i(TAG, "####"+response);
 
        
    }
    public void BuildXMLDoc() throws IOException, JDOMException {
     List list = new ArrayList();
     List list2 = new ArrayList();
     list.add(0, "1111111111"); list2.add(0, "11,22,33,44,55");
     list.add(1, "2222222222"); list2.add(1, "11,22,33,44,55");
     list.add(2, "3333333333"); list2.add(2, "11,22,33,44,55");
        Element root = new Element("list");
      
        
        Document Doc = new Document(root);
        
        Element elements;


       XMLOutputter outputter = new XMLOutputter();
      
        
          for(小於list容量時)
          {
           elements= new Element("user");
           elements.setAttribute("id", "" + i);
           elements.addContent(new Element("_id").setText(list.get(i)));
           elements.addContent(new Element("oj_want").setText(list2.get(i)));
           root.addContent(elements);
           aa+= outputter.outputString(elements);
          }  

          System.out.println(aa);
  
       /*   
      //如要產生XML的檔案使用以下   
      XMLOutputter XMLOut = new XMLOutputter();    
      XMLOut.output(Doc, new FileOutputStream("user.xml"));
 */
    }
    public String httpPost(String url, List params) throws Exception
 {
  String response = null;
  HttpClient httpclient = new DefaultHttpClient();
  
  HttpPost httppost = new HttpPost(url);
  try 
  {    
  
   httppost.setEntity(new UrlEncodedFormEntity(params,HTTP.UTF_8));
   
   HttpResponse httpResponse = httpclient.execute(httppost);
   int statusCode = httpResponse.getStatusLine().getStatusCode();
   if(statusCode==HttpStatus.SC_OK)
   {     
  
    response = EntityUtils.toString(httpResponse.getEntity());
   }
   else
   {
    response = "錯誤"+statusCode;
   }
  }catch (Exception e)
  {
   e.printStackTrace();
  }
  return response;
 }
}