android http-post方法简单实现

package com.hl;

002 

003import java.io.BufferedReader;

004import java.io.IOException;

005import java.io.InputStream;

006import java.io.InputStreamReader;

007import java.util.ArrayList;

008import java.util.HashMap;

009import java.util.Iterator;

010import java.util.Map;

011import java.util.Set;

012 

013import org.apache.http.HttpEntity;

014import org.apache.http.HttpResponse;

015import org.apache.http.client.entity.UrlEncodedFormEntity;

016import org.apache.http.client.methods.HttpPost;

017import org.apache.http.impl.client.DefaultHttpClient;

018import org.apache.http.message.BasicNameValuePair;

019 

020import android.app.Activity;

021import android.os.Bundle;

022import android.view.View;

023import android.view.View.OnClickListener;

024import android.widget.Button;

025import android.widget.EditText;

026import android.widget.TextView;

027 

028public classSimplePOST extends Activity {

029 privateTextView show;

030 privateEditText txt;

031 privateButton btn;

032  

033    @Override

034    publicvoid onCreate(Bundle savedInstanceState) {

035        super.onCreate(savedInstanceState);

036        setContentView(R.layout.main);

037        show = (TextView)findViewById(R.id.show);

038        txt = (EditText)findViewById(R.id.txt);

039        btn = (Button)findViewById(R.id.btn);

040        btn.setOnClickListener(newOnClickListener() {

041    

042   @Override

043   publicvoid onClick(View v) {

044    dopost(txt.getText().toString());

045     

046   }

047  });

048    }

049 

050 privatevoid dopost(String val){

051     //封装数据

052     Map<String, String> parmas =new HashMap<String, String>();

053     parmas.put("name", val);

054     

055     DefaultHttpClient client =new DefaultHttpClient();//http客户端

056     HttpPost httpPost =new HttpPost("http://mhycoe.com/test/post.php");

057     

058     ArrayList<BasicNameValuePair> pairs =new ArrayList<BasicNameValuePair>();

059     if(parmas !=null){

060         Set<String> keys = parmas.keySet();

061         for(Iterator<String> i = keys.iterator(); i.hasNext();) {

062              String key = (String)i.next();

063              pairs.add(newBasicNameValuePair(key, parmas.get(key)));

064         }

065    }

066     

067  try{

068   UrlEncodedFormEntity p_entity =new UrlEncodedFormEntity(pairs,"utf-8");

069         /*

070          *  将POST数据放入HTTP请求

071          */

072         httpPost.setEntity(p_entity);

073         /*

074          *  发出实际的HTTP POST请求

075           */

076         HttpResponse response = client.execute(httpPost);

077         HttpEntity entity = response.getEntity();

078         InputStream content = entity.getContent();

079   String returnConnection = convertStreamToString(content);

080         show.setText(returnConnection);

081  } catch(IllegalStateException e) {

082   e.printStackTrace();

083  } catch(IOException e) {

084   e.printStackTrace();

085  }

086     

087 }

088 

089  privateString convertStreamToString(InputStream is) {

090   BufferedReader reader =new BufferedReader(newInputStreamReader(is));

091         StringBuilder sb =new StringBuilder();

092         String line =null;

093         try{

094              while((line = reader.readLine()) != null) {

095                   sb.append(line);

096              }

097         } catch (IOException e) {

098              e.printStackTrace();

099         } finally {

100              try{

101                   is.close();

102              }catch (IOException e) {

103                   e.printStackTrace();

104              }

105         }

106         returnsb.toString();

107 }

108}