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Video.java
- package cn.itcast.domain;
-
- public class Video {
- private Integer id;
- private String title;
- private Integer time;
-
- public Video(){}
-
- public Video(Integer id, String title, Integer time) {
- this.id = id;
- this.title = title;
- this.time = time;
- }
- 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 getTime() {
- return time;
- }
- public void setTime(Integer time) {
- this.time = time;
- }
-
- }
StreamTool.java
- package cn.itcast.utils;
-
- import java.io.ByteArrayOutputStream;
- import java.io.InputStream;
-
- public class StreamTool {
-
- /**
- * 從輸入流中獲取數據
- * @param inStream 輸入流
- * @return
- * @throws Exception
- */
- public static byte[] readInputStream(InputStream inStream) throws Exception{
- ByteArrayOutputStream outStream = new ByteArrayOutputStream();
- byte[] buffer = new byte[1024];
- int len = 0;
- while( (len=inStream.read(buffer)) != -1 ){
- outStream.write(buffer, 0, len);
- }
- inStream.close();
- return outStream.toByteArray();
- }
- }
VideoService.java
- package cn.itcast.service;
-
- import java.io.InputStream;
- import java.net.HttpURLConnection;
- import java.net.URL;
- import java.util.ArrayList;
- import java.util.List;
-
- import org.json.JSONArray;
- import org.json.JSONObject;
- import org.xmlpull.v1.XmlPullParser;
-
- import Android.util.Xml;
-
- import cn.itcast.domain.Video;
- import cn.itcast.utils.StreamTool;
-
- public class VideoService {
- /**
- * 獲取最新的視頻資訊
- * @return
- * @throws Exception
- */
- public static List<Video> getLastVideos() throws Exception{
- String path = "http://192.168.1.100:8080/videoweb/video/list.do";
- URL url = new URL(path);
- HttpURLConnection conn = (HttpURLConnection)url.openConnection();
- conn.setReadTimeout(5*1000);
- conn.setRequestMethod("GET");
- InputStream inStream = conn.getInputStream();
- return parseXML(inStream);
- }
-
- public static List<Video> getJSONLastVideos() throws Exception{
- List<Video> videos = new ArrayList<Video>();
- String path = "http://192.168.1.100:8080/videoweb/video/list.do?format=json";
- URL url = new URL(path);
- HttpURLConnection conn = (HttpURLConnection)url.openConnection();
- conn.setReadTimeout(5*1000);
- conn.setRequestMethod("GET");
- InputStream inStream = conn.getInputStream();
- byte[] data = StreamTool.readInputStream(inStream);
- String json = new String(data);
- JSONArray array = new JSONArray(json);
- for(int i=0 ; i < array.length() ; i++){
- JSONObject item = array.getJSONObject(i);
- int id = item.getInt("id");
- String title = item.getString("title");
- int timelength = item.getInt("timelength");
- videos.add(new Video(id, title, timelength));
- }
- return videos;
- }
- /**
- * 解析服務器返回的協議,得到視頻資訊
- * @param inStream
- * @return
- * @throws Exception
- */
- private static List<Video> parseXML(InputStream inStream) throws Exception{
- List<Video> videos = null;
- Video video = null;
- XmlPullParser parser = Xml.newPullParser();
- parser.setInput(inStream, "UTF-8");
- int eventType = parser.getEventType();//產生第一個事件
- while(eventType!=XmlPullParser.END_DOCUMENT){//只要不是文檔結束事件
- switch (eventType) {
- case XmlPullParser.START_DOCUMENT:
- videos = new ArrayList<Video>();
- break;
-
- case XmlPullParser.START_TAG:
- String name = parser.getName();//獲取解析器當前指向的元素的名稱
- if("video".equals(name)){
- video = new Video();
- video.setId(new Integer(parser.getAttributeValue(0)));
- }
- if(video!=null){
- if("title".equals(name)){
- video.setTitle(parser.nextText());//獲取解析器當前指向元素的下一個文本節點的值
- }
- if("timelength".equals(name)){
- video.setTime(new Integer(parser.nextText()));
- }
- }
- break;
-
- case XmlPullParser.END_TAG:
- if("video".equals(parser.getName())){
- videos.add(video);
- video = null;
- }
- break;
- }
- eventType = parser.next();
- }
- return videos;
- }
- }
MainActivity.java
- package cn.itcast.videoclient;
-
- import java.util.ArrayList;
- import java.util.HashMap;
- import java.util.List;
-
- import cn.itcast.domain.Video;
- import cn.itcast.service.VideoService;
- import android.app.Activity;
- import android.os.Bundle;
- import android.util.Log;
- import android.widget.ListView;
- import android.widget.SimpleAdapter;
- import android.widget.Toast;
-
- public class MainActivity extends Activity {
- private ListView listView;
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
-
- listView = (ListView)this.findViewById(R.id.listView);
- try {
- List<Video> videos = VideoService.getJSONLastVideos();
- List<HashMap<String, Object>> data = new ArrayList<HashMap<String,Object>>();
- for(Video video : videos){
- HashMap<String, Object> item = new HashMap<String, Object>();
- item.put("id", video.getId());
- item.put("title", video.getTitle());
- item.put("timelength", "時長:"+ video.getTime());
- 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 (Exception e) {
- Toast.makeText(MainActivity.this, "獲取最新視頻資訊失敗", 1).show();
- Log.e("MainActivity", e.toString());
- }
- }
- }
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