Android编程学习：通过http请求与Apache通信（完整版）

Android编程学习：通过http请求与Apache通信（完整版）

post_datas.php

[php]

1. <?php  
2. @header("content-type:text/html; charset=gb2312");  
3. echo $_REQUEST['user'];  
4. echo $_REQUEST['passwd'];  
5. echo $_REQUEST['para'];  
6. ?>   

Mini2440Activity.java

[java]

1. package sg131971.mini2440;  
2.   
3. import java.io.IOException;  
4. import java.util.ArrayList;  
5. import java.util.List;  
6.   
7. import org.apache.http.HttpResponse;  
8. import org.apache.http.NameValuePair;  
9. import org.apache.http.client.ClientProtocolException;  
10. import org.apache.http.client.HttpClient;  
11. import org.apache.http.client.entity.UrlEncodedFormEntity;  
12. import org.apache.http.client.methods.HttpPost;  
13. import org.apache.http.impl.client.DefaultHttpClient;  
14. import org.apache.http.message.BasicNameValuePair;  
15. import org.apache.http.util.EntityUtils;  
16.   
17. import Android.app.Activity;  
18. import android.os.Bundle;  
19. import android.view.View;  
20. import android.view.View.OnClickListener;  
21. import android.widget.Button;  
22.   
23. public class Mini2440Activity extends Activity {  
24.   
25.     public class myButtonListener implements OnClickListener {  
26.   
27.         private HttpResponse response;  
28.         private String tmpString;  
29.   
30.         public void onClick(View arg0) {  
31.             // TODO Auto-generated method stub   
32.             HttpClient httpclient = new DefaultHttpClient();  
33.             HttpPost httppost = new HttpPost("http://192.168.1.123/post_datas.php");  
34.   
35.             try {  
36.                 List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(3);  
37.                 nameValuePairs.add(new BasicNameValuePair("user", "root"));  
38.                 nameValuePairs.add(new BasicNameValuePair("passwd","shiguang"));  
39.                 nameValuePairs.add(new BasicNameValuePair("para","58402F01"));  
40.                 httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));  
41.   
42.                 response = httpclient.execute(httppost);  
43.                 tmpString = EntityUtils.toString(response.getEntity());  
44.                 System.out.print(tmpString);  
45.             } catch (ClientProtocolException e) {  
46.                 // TODO Auto-generated catch block   
47.                 e.printStackTrace();  
48.             } catch (IOException e) {  
49.                 // TODO Auto-generated catch block   
50.                 e.printStackTrace();  
51.             }  
52.         }  
53.     }  
54.   
55.     private Button myButton;  
56.   
57.     /** Called when the activity is first created. */  
58.     @Override  
59.     public void onCreate(Bundle savedInstanceState) {  
60.         super.onCreate(savedInstanceState);  
61.         setContentView(R.layout.main);  
62.   
63.         myButton = (Button) findViewById(R.id.myButton);  
64.         myButton.setOnClickListener(new myButtonListener());  
65.     }  
66. }  

main.xml

[html]

1. <?xml version="1.0" encoding="utf-8"?>  
2. <AbsoluteLayout xmlns:android="http://schemas.android.com/apk/res/android"  
3.     android:orientation="vertical"  
4.     android:layout_width="fill_parent"  
5.     android:layout_height="fill_parent"  
6.     >  
7.     <Button android:id="@+id/myButton"   
8.         android:text="@string/myButton"   
9.         android:layout_height="wrap_content"   
10.         android:layout_width="91dp"   
11.         android:layout_x="126dp"   
12.         android:layout_y="70dp"  
13.         ></Button>  
14. </AbsoluteLayout>  

AndroidManifest.xml [html]

1. <?xml version="1.0" encoding="utf-8"?>  
2. <manifest xmlns:android="http://schemas.android.com/apk/res/android"  
3.       package="sg131971.mini2440"  
4.       android:versionCode="1"  
5.       android:versionName="1.0">  
6.     <uses-sdk android:minSdkVersion="4" />  
7.     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>   
8.     <uses-permission android:name="android.permission.INTERNET" />   
9.     <application android:icon="@drawable/icon" android:label="@string/app_name">  
10.         <activity android:name=".Mini2440Activity"  
11.                   android:label="@string/app_name">  
12.             <intent-filter>  
13.                 <action android:name="android.intent.action.MAIN" />  
14.                 <category android:name="android.intent.category.LAUNCHER" />  
15.             </intent-filter>  
16.         </activity>  
17.   
18.     </application>  
19. </manifest>  

下面两行一定不能少，否则你的程序是不能使用网络的。

[html]

1. <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>   
2. <uses-permission android:name="android.permission.INTERNET" />  

仿真结果：