android利用http请求xml

一、权限

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

二、实体domain

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;
}

}

三、编码

public class VideoService {
/**
* 获取最新的视频资讯
* @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);
}

/**
* 解析服务器返回的协议，得到视频资讯
* @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();//产生第一个事件
while(eventType!=XmlPullParser.END_DOCUMENT){//只要不是文档结束事件
switch (eventType) {
case XmlPullParser.START_DOCUMENT:
videos = new ArrayList<Video>();
break;

case XmlPullParser.START_TAG:
String name = parser.getName();//获取解析器当前指向的元素的名称
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());//获取解析器当前指向元素的下一个文本节点的值
}
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;
}
}

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