android http-post方法简单实现

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import

java.io.BufferedReader;

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import

java.io.IOException;

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import

java.io.InputStream;

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import

java.io.InputStreamReader;

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import

java.util.ArrayList;

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import

java.util.HashMap;

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import

java.util.Iterator;

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import

java.util.Map;

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import

java.util.Set;

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import

org.apache.http.HttpEntity;

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import

org.apache.http.HttpResponse;

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import

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

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import

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

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import

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

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import

org.apache.http.message.BasicNameValuePair;

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import

android.app.Activity;

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import

android.os.Bundle;

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import

android.view.View;

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import

android.view.View.OnClickListener;

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import

android.widget.Button;

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import

android.widget.EditText;

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import

android.widget.TextView;

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public

class

SimplePOST

extends

Activity{

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private

TextViewshow;

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private

EditTexttxt;

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private

Buttonbtn;

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@Override

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public

void

onCreate(BundlesavedInstanceState){

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super

.onCreate(savedInstanceState);

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setContentView(R.layout.main);

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

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

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

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btn.setOnClickListener(

new

OnClickListener(){

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@Override

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public

void

onClick(Viewv){

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

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}

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});

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}

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private

void

dopost(Stringval){

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//封装数据

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Map<String,String>parmas=

new

HashMap<String,String>();

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parmas.put(

"name"

,val);

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DefaultHttpClientclient=

new

DefaultHttpClient();

//http客户端

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HttpPosthttpPost=

new

HttpPost(

"http://mhycoe.com/test/post.php"

);

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ArrayList<BasicNameValuePair>pairs=

new

ArrayList<BasicNameValuePair>();

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if

(parmas!=

null

){

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

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for

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

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Stringkey=(String)i.next();

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pairs.add(

new

BasicNameValuePair(key,parmas.get(key)));

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}

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}

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try

{

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UrlEncodedFormEntityp_entity=

new

UrlEncodedFormEntity(pairs,

"utf-8"

);

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/*

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*将POST数据放入HTTP请求

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*/

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httpPost.setEntity(p_entity);

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/*

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*发出实际的HTTPPOST请求

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*/

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HttpResponseresponse=client.execute(httpPost);

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HttpEntityentity=response.getEntity();

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InputStreamcontent=entity.getContent();

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StringreturnConnection=convertStreamToString(content);

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show.setText(returnConnection);

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}

catch

(IllegalStateExceptione){

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e.printStackTrace();

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}

catch

(IOExceptione){

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e.printStackTrace();

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}

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}

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private

StringconvertStreamToString(InputStreamis){

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BufferedReaderreader=

new

BufferedReader(

new

InputStreamReader(is));

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StringBuildersb=

new

StringBuilder();

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Stringline=

null

;

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try

{

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while

((line=reader.readLine())!=

null

){

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sb.append(line);

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}

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}

catch

(IOExceptione){

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e.printStackTrace();

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}

finally

{

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try

{

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is.close();

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}

catch

(IOExceptione){

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e.printStackTrace();

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}

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}

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return

sb.toString();

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}

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}