怎樣實現android http-post方法

[html] view plaincopyprint?package com.hl; 
 
import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.InputStreamReader; 
import java.util.ArrayList; 
import java.util.HashMap; 
import java.util.Iterator; 
import java.util.Map; 
import java.util.Set; 
 
import org.apache.http.HttpEntity; 
import org.apache.http.HttpResponse; 
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 android.app.Activity; 
import android.os.Bundle; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.TextView; 
 
public class SimplePOST extends Activity { 
 private TextView show; 
 private EditText txt; 
 private Button btn; 
  
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.main); 
        show = (TextView)findViewById(R.id.show); 
        txt = (EditText)findViewById(R.id.txt); 
        btn = (Button)findViewById(R.id.btn); 
        btn.setOnClickListener(new OnClickListener() { 
    
   @Override 
   public void onClick(View v) { 
    dopost(txt.getText().toString()); 
     
   } 
  }); 
    } 
 
 private void dopost(String val){ 
     //封裝資料 
     Map<String, String> parmas = new HashMap<String, String>(); 
     parmas.put("name", val); 
     
     DefaultHttpClient client = new DefaultHttpClient();//http用戶端 
     HttpPost httpPost = new HttpPost("http://mhycoe.com/test/post.php"); 
     
     ArrayList<BasicNameValuePair> pairs = new ArrayList<BasicNameValuePair>(); 
     if(parmas != null){ 
         Set<String> keys = parmas.keySet(); 
         for(Iterator<String> i = keys.iterator(); i.hasNext();) { 
              String key = (String)i.next(); 
              pairs.add(new BasicNameValuePair(key, parmas.get(key))); 
         } 
    } 
     
  try { 
   UrlEncodedFormEntity p_entity = new UrlEncodedFormEntity(pairs, "utf-8"); 
         /* 
          *  將POST資料放入HTTP請求 
          */ 
         httpPost.setEntity(p_entity); 
         /* 
          *  發出實際的HTTP POST請求 
           */ 
         HttpResponse response = client.execute(httpPost); 
         HttpEntity entity = response.getEntity(); 
         InputStream content = entity.getContent(); 
   String returnConnection = convertStreamToString(content); 
         show.setText(returnConnection); 
  } catch (IllegalStateException e) { 
   e.printStackTrace(); 
  } catch (IOException e) { 
   e.printStackTrace(); 
  } 
     
 } 
 
  private String convertStreamToString(InputStream is) { 
   BufferedReader reader = new BufferedReader(new InputStreamReader(is)); 
         StringBuilder sb = new StringBuilder(); 
         String line = null; 
         try { 
              while ((line = reader.readLine()) != null) { 
                   sb.append(line); 
              } 
         } catch (IOException e) { 
              e.printStackTrace(); 
         } finally { 
              try { 
                   is.close(); 
              } catch (IOException e) { 
                   e.printStackTrace(); 
              } 
         } 
         return sb.toString(); 
 } 
} 

package com.hl;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
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 android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class SimplePOST extends Activity {
 private TextView show;
 private EditText txt;
 private Button btn;
 
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        show = (TextView)findViewById(R.id.show);
        txt = (EditText)findViewById(R.id.txt);
        btn = (Button)findViewById(R.id.btn);
        btn.setOnClickListener(new OnClickListener() {
  
   @Override
   public void onClick(View v) {
    dopost(txt.getText().toString());
   
   }
  });
    }

 private void dopost(String val){
     //封裝資料
     Map<String, String> parmas = new HashMap<String, String>();
     parmas.put("name", val);
   
     DefaultHttpClient client = new DefaultHttpClient();//http用戶端
     HttpPost httpPost = new HttpPost("http://mhycoe.com/test/post.php");
   
     ArrayList<BasicNameValuePair> pairs = new ArrayList<BasicNameValuePair>();
     if(parmas != null){
         Set<String> keys = parmas.keySet();
         for(Iterator<String> i = keys.iterator(); i.hasNext();) {
              String key = (String)i.next();
              pairs.add(new BasicNameValuePair(key, parmas.get(key)));
         }
    }
   
  try {
   UrlEncodedFormEntity p_entity = new UrlEncodedFormEntity(pairs, "utf-8");
         /*
          *  將POST資料放入HTTP請求
          */
         httpPost.setEntity(p_entity);
         /*
          *  發出實際的HTTP POST請求
           */
         HttpResponse response = client.execute(httpPost);
         HttpEntity entity = response.getEntity();
         InputStream content = entity.getContent();
   String returnConnection = convertStreamToString(content);
         show.setText(returnConnection);
  } catch (IllegalStateException e) {
   e.printStackTrace();
  } catch (IOException e) {
   e.printStackTrace();
  }
   
 }

  private String convertStreamToString(InputStream is) {
   BufferedReader reader = new BufferedReader(new InputStreamReader(is));
         StringBuilder sb = new StringBuilder();
         String line = null;
         try {
              while ((line = reader.readLine()) != null) {
                   sb.append(line);
              }
         } catch (IOException e) {
              e.printStackTrace();
         } finally {
              try {
                   is.close();
              } catch (IOException e) {
                   e.printStackTrace();
              }
         }
         return sb.toString();
 }
}