实验步骤：

1、配置J2EE开发环境，并部署web应用viderweb，启动服务

2、打开浏览器访问网址

http://localhost:8080/videoweb/video/list.do

演示xml数据

3、创建android客户端工程，实现访问上面的网址并且将取得的xml数据进行解析并显示，如下图：

Android客户端代码

程序流程

资源

<resources>      <string name="app_name">视频资讯客户端</string>      <string name="error">网络连接失败</string>  </resources>

布局

main.xml

<?xml version="1.0" encoding="utf-8"?>  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"      android:layout_width="fill_parent"      android:layout_height="fill_parent"      android:orientation="vertical" >         <ListView          android:id="@+id/listView"          android:layout_width="fill_parent"          android:layout_height="fill_parent" />     </LinearLayout>

<?xml version="1.0" encoding="utf-8"?>  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"      android:layout_width="fill_parent"      android:layout_height="wrap_content"      android:orientation="horizontal" >         <TextView          android:id="@+id/title"          android:layout_width="250dip"          android:layout_height="wrap_content" />         <TextView          android:id="@+id/timelength"          android:layout_width="fill_parent"          android:layout_height="wrap_content" />     </LinearLayout>

item.xml

添加业务bean类Video

package cn.class3g.domain;     public class Video {      private Integer id;      private String title;      private Integer timelength;         public Video(Integer id, String title, Integer timelength) {         super();         this.id = id;         this.title = title;         this.timelength = timelength;      }      public Video() {  }      public Integer getId() {         return id;      }      public void setId(Integer id) {         this.id = id;      }      public String getTitle() {         return title;      }      public void setTitle(String title) {         this.title = title;      }      public Integer getTimelength() {         return timelength;      }      public void setTimelength(Integer timelength) {         this.timelength = timelength;      }      public String toString() {         return "Video [id=" + id + ", title=" + title + ", timelength="                + timelength + "]";      }  }

添加业务类VideoService类

publicclassVideoService{

    /**       * 从服务器获取最新的视频资讯       *       * @return       * @throws Throwable       */      public static List<Video> getLastVideos() throws Throwable {         String path =  "http://192.168.1.102:8080/videoweb/video/list.do";         URL url = new URL(path);         HttpURLConnection conn = (HttpURLConnection) url.openConnection();         conn.setConnectTimeout(5 * 1000);         conn.setRequestMethod("GET");         InputStream inStream = conn.getInputStream();         return parseXML(inStream);      }         private static List<Video> parseXML(InputStream inStream) throws Exception {         Video video = null;         List<Video> videos = null;         XmlPullParser pullParser = Xml.newPullParser();         pullParser.setInput(inStream, "UTF-8");                 int event = pullParser.getEventType();// 触发第一个事件                 while (event != XmlPullParser.END_DOCUMENT) {             switch (event) {             case XmlPullParser.START_DOCUMENT:                videos = new ArrayList<Video>();                break;             case XmlPullParser.START_TAG:                if ("video".equals(pullParser.getName())) {                    int id = new Integer(pullParser.getAttributeValue(0));                    video = new Video();                    video.setId(id);                }                if (video != null) {                    if ("title".equals(pullParser.getName())) {                       video.setTitle(pullParser.nextText());                    }                    if ("timelength".equals(pullParser.getName())) {                       video.setTimelength(new Integer(pullParser.nextText()));                    }                }                break;                case XmlPullParser.END_TAG:                if ("video".equals(pullParser.getName())) {                    videos.add(video);                    video = null;                }                break;             }             event = pullParser.next();         }         return videos;      }  }

Activity类MyVideoNewsActivity

public class MyVideoNewsActivity extends Activity {         public void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setContentView(R.layout.main);                   try {             List<Video> videos = VideoService.getLastVideos();//获取最新视频资讯             ListView listView = (ListView)this.findViewById(R.id.listView);             List<HashMap<String, Object>> data = new ArrayList<HashMap<String,Object>>();             for(Video video : videos){                HashMap<String, Object> item = new HashMap<String, Object>();                item.put("title", video.getTitle());                item.put("timelength", "时长:"+video.getTimelength());                item.put("id", video.getId());                data.add(item);             }             SimpleAdapter adapter = new SimpleAdapter(this, data, R.layout.item,                    new String[]{"title","timelength"}, new int[]{R.id.title, R.id.timelength});             listView.setAdapter(adapter);         } catch (Throwable e) {             Log.e("TAG", e.toString());             Toast.makeText(this, R.string.error, 1).show();         }         }  }

获取web服务器xml数据

实验步骤：

Android客户端代码

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