android http-post方法简单实现

package com.hl;

002

003	import java.io.BufferedReader;

004	import java.io.IOException;

005	import java.io.InputStream;

006	import java.io.InputStreamReader;

007	import java.util.ArrayList;

008	import java.util.HashMap;

009	import java.util.Iterator;

010	import java.util.Map;

011	import java.util.Set;

012

013	import org.apache.http.HttpEntity;

014	import org.apache.http.HttpResponse;

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

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

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

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

019

020	import android.app.Activity;

021	import android.os.Bundle;

022	import android.view.View;

023	import android.view.View.OnClickListener;

024	import android.widget.Button;

025	import android.widget.EditText;

026	import android.widget.TextView;

027

028	public class SimplePOST extends Activity {

029	private TextView show;

030	private EditText txt;

031	private Button btn;

032

033

@Override

034	public void 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(new OnClickListener() {

041

042

@Override

043	public void onClick(View v) {

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

045

046

}

047

});

048

}

049

050	private void 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(new BasicNameValuePair(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	private String convertStreamToString(InputStream is) {

090	BufferedReader reader = new BufferedReader(new InputStreamReader(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	return sb.toString();

107

}

108

}