Android 实现Post向服务器提交数据



	 

	Android 实现Post向服务器提交数据

	 熟悉web编程的都很了解get和post这两种传递表单数据的方法。

	 这里不具体介绍get和post的区别，如需了解请参考：http://www.zzzyk.com/kf/201112/114558.html

	 所谓的get传递数据也是我们最常见的一种，如http://127.0.0.1/index.php?param=androidyue,这种方式直接显示在url中，因此很不安全，

	 而使用post传递数据则不会直接暴露出来，相对来说更加安全一些。post传递也需要key和value。

	 以下是android程序示例代码：

	 

	package com.google.code.cakedroid.demo;

	 

	 

	 

	 

	 import java.util.ArrayList;

	 import java.util.List;

	 

	 

	 import org.apache.http.HttpResponse;

	 import org.apache.http.NameValuePair;

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

	 import org.apache.http.client.methods.HttpEntityEnclosingRequestBase;

	 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 com.google.code.cakedroid.R;

	 

	 

	 import android.app.Activity;

	 import android.os.Bundle;

	 import android.view.View;

	 import android.widget.Button;

	 import android.widget.TextView;

	 

	 

	 public class PostMethodDemoActivity extends Activity{

	     //declare the variables

	     private TextView tvResult;

	     private Button btnClick;

	     

	     @Override

	     protected void onCreate(Bundle savedInstanceState) {

	         super.onCreate(savedInstanceState);

	         setContentView(R.layout.main);

	         this.initViews();

	     }

	     

	     /*

	      * initialize necessary views

	      */

	     private void initViews(){

	         this.initButtons();

	         this.initTextViews();

	     }

	     

	     /*

	      * initialize necessary textviews

	      */

	     private void initTextViews(){

	         this.tvResult=(TextView)this.findViewById(R.id.tvResult);

	     }

	     

	     /*

	      * initialize necessary buttons

	      */

	     private void initButtons(){

	         this.btnClick=(Button)this.findViewById(R.id.btnClick);

	         this.btnClick.setOnClickListener(new View.OnClickListener() {

	             

	             @Override

	             public void onClick(View arg0) {

	                 // TODO Auto-generated method stub

	                 postData();

	             }

	         });

	     }

	     

	     /*

	      * post data to remote host

	      */

	     private void postData(){

	         String destUrl="http://10.0.2.2/form_handler.php";

	         //instantiate HttpPost object from the url address

	         HttpEntityEnclosingRequestBase httpRequest =new HttpPost(destUrl);

	         //the post name and value must be used as NameValuePair

	         List <NameValuePair> params=new ArrayList<NameValuePair>();

	         params.add(new BasicNameValuePair("param","I have posted you the data"));

	         try{

	          httpRequest.setEntity(new UrlEncodedFormEntity(params,HTTP.UTF_8));

	          //execute the post and get the response from servers

	          HttpResponse httpResponse=new DefaultHttpClient().execute(httpRequest);

	           

	          if(httpResponse.getStatusLine().getStatusCode()==200){

	           //get the result

	           String strResult=EntityUtils.toString(httpResponse.getEntity());

	           tvResult.setText(strResult);

	          }else{

	           tvResult.setText("Error Response"+httpResponse.getStatusLine().toString());

	          }

	         }catch(Exception e){

	             System.out.println("error occurs");

	         }

	     }

	 }

	 

	 

	服务器断php代码：

	 

	<?php

	     if(isset($_POST['param'])){

	         echo $_POST['param'].'  I received the data';

	     }

	 ?>

	 

	 

	注意：如果如需正常访问，请在manifest.xml中添加internet访问权限。

	 

	摘自BossDarcy的专栏

补充：移动开发 , Android ,