Android解析本地服务器的XML文件

刚刚接触Android，这两天学习了一下pull解析本地服务器。

首先要注意的有几点是

1：本地服务器的配置（这里不详细说明），如果输入http://localhost/data.xml能显示那就可以了

2：记得给配置文件xml 添加上权限<uses-permission android:name="android.permission.INTERNET"></uses-permission>

3：如果使用的是真机调试那么，必须要使手机与pc机处在同一个局域网，不然是访问不了的，或者你讲自己的服务器放到外网的服务器上。

4：这里解析的地址要写成 http://10.0.2.2/data.xml，不能写成27.0.0.1或者localhost。

首先看看data.xml文件

<apps><app><id>1</id><name>Helen</name><version>1.0</version></app><app><id>22</id><name>Bob</name><version>2.0</version></app></apps>

很简单的一个数据文件。

然后是布局文件

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context=".RequestHttpURLConMainActivity" >    <Button        android:id="@+id/BTN_REQ_ID"         android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="send Request"/>        <ScrollView         android:layout_width="match_parent"        android:layout_height="match_parent">                <TextView            android:id="@+id/TEV_ID"            android:layout_width="match_parent"            android:layout_height="wrap_content"/>            </ScrollView>    </LinearLayout>

下面是java文件

package com.example.requesthttpurlcon;import java.io.BufferedReader;import java.io.InputStream;import java.io.InputStreamReader;import java.io.StringReader;import java.net.HttpURLConnection;import java.net.URL;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.client.HttpClient;import org.apache.http.client.methods.HttpGet;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.util.EntityUtils;import org.xmlpull.v1.XmlPullParser;import org.xmlpull.v1.XmlPullParserFactory;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.util.Log;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.TextView;import android.widget.Toast;public class RequestHttpURLConMainActivity extends Activity implements OnClickListener{ public static final int SHOW_RESPONSE = 0 ;private Button btn ;private TextView tview ;private Handler handler = new Handler(){public void handleMessage(Message msg){switch (msg.what) {case SHOW_RESPONSE:String response = (String) msg.obj ;tview.setText(response) ;break;default:break;}}} ;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_request_http_urlcon_main);                btn = (Button) findViewById(R.id.BTN_REQ_ID) ;        tview = (TextView) findViewById(R.id.TEV_ID);        btn.setOnClickListener(this) ;            }  @Overridepublic void onClick(View arg0) {// TODO Auto-generated method stubif(arg0.getId() == R.id.BTN_REQ_ID){SendRequestWithClinet() ;Log.i("a","1") ;Toast.makeText(RequestHttpURLConMainActivity.this, "yaaoul", Toast.LENGTH_LONG).show() ;}}private void SendRequestWithClinet(){new Thread(new Runnable() {@Overridepublic void run() {// TODO Auto-generated method stubtry {Log.i("a","2") ;HttpClient httpClient = new DefaultHttpClient() ;HttpGet httpGet = new HttpGet("http://10.0.2.2:80/data.xml") ;HttpResponse httpResponse = httpClient.execute(httpGet) ;if(httpResponse.getStatusLine().getStatusCode()==200){HttpEntity entity = httpResponse.getEntity() ;String response = EntityUtils.toString(entity,"utf-8") ;paresXml(response) ;/*Message message = new Message() ;message.what = SHOW_RESPONSE ;message.obj = response.toString() ;handler.sendMessage(message) ;*/Log.i("aaaaaaa",response) ;}} catch (Exception e) {// TODO: handle exceptione.printStackTrace() ;}}}).start();}private void paresXml(String xmlData) {// TODO Auto-generated method stub//Toast.makeText(GetXmlWithPullMainActivity.this, "22", Toast.LENGTH_LONG).show() ;try {Log.i("a","3") ;XmlPullParserFactory factory = XmlPullParserFactory.newInstance() ;XmlPullParser xmlPullParser = factory.newPullParser() ;xmlPullParser.setInput(new StringReader(xmlData)) ;int eventType = xmlPullParser.getEventType() ;String id = "" ;String name = "" ;String version = "" ;while(eventType !=XmlPullParser.END_DOCUMENT){String nodeName = xmlPullParser.getName() ;switch (eventType) {case XmlPullParser.START_TAG:{if("name".equals(nodeName)){name = xmlPullParser.nextText() ;}else if("id".equals(nodeName)){id = xmlPullParser.nextText() ;}else if("version".equals(nodeName)){version = xmlPullParser.nextText() ;}break;}case XmlPullParser.END_TAG:{if("app".equals(nodeName)){Log.d("MainActivit","id is" + id) ;Log.d("MainActivit","name is" + name) ;Log.d("MainActivit","version is" + version) ;}break ;}default:{Log.i("a","meiyou") ;break;}}eventType = xmlPullParser.next() ;}} catch (Exception e) {// TODO: handle exceptione.printStackTrace() ;}}}

运行成功后，会在LogCat界面打出结果。