Android编程学习：通过http请求与Apache通信（完整版）

post_datas.php[php]

<？php
@header（"content-type:text/html; charset=gb2312"）;
echo $_REQUEST["user"];
echo $_REQUEST["passwd"];
echo $_REQUEST["para"];
？>

Mini2440Activity.java[java]

package sg131971.mini2440;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import Android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class Mini2440Activity extends Activity {
public class myButtonListener implements OnClickListener {
private HttpResponse response;
private String tmpString;
public void onClick（View arg0） {
// TODO Auto-generated method stub
HttpClient httpclient = new DefaultHttpClient（）;
HttpPost httppost = new HttpPost（"http://192.168.1.123/post_datas.php"）;
try {
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>（3）;
nameValuePairs.add（new BasicNameValuePair（"user", "root"））;
nameValuePairs.add（new BasicNameValuePair（"passwd","shiguang"））;
nameValuePairs.add（new BasicNameValuePair（"para","58402F01"））;
httppost.setEntity（new UrlEncodedFormEntity（nameValuePairs））;
response = httpclient.execute（httppost）;
tmpString = EntityUtils.toString（response.getEntity（））;
System.out.print（tmpString）;
} catch （ClientProtocolException e） {
// TODO Auto-generated catch block
e.printStackTrace（）;
} catch （IOException e） {
// TODO Auto-generated catch block
e.printStackTrace（）;
}
}
}
private Button myButton;
/** Called when the activity is first created. */
@Override
public void onCreate（Bundle savedInstanceState） {
super.onCreate（savedInstanceState）;
setContentView（R.layout.main）;
myButton = （Button） findViewById（R.id.myButton）;
myButton.setOnClickListener（new myButtonListener（））;
}
}

main.xml [html]

<？xml version="1.0" encoding="utf-8"？>
<AbsoluteLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<Button android:id="@+id/myButton"
android:text="@string/myButton"
android:layout_height="wrap_content"
android:layout_width="91dp"
android:layout_x="126dp"
android:layout_y="70dp"
></Button>
</AbsoluteLayout>

AndroidManifest.xml [html]

<？xml version="1.0" encoding="utf-8"？>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="sg131971.mini2440"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="4" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.INTERNET" />
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".Mini2440Activity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</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]

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

仿真结果：