引用:http://www.2cto.com/kf/201112/114551.html
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.2cto.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。
