Androidx学习笔记（34）---新闻客户端之获取新闻xml文件并解析

1、根据xml的结点定义JavaBean

<newslist>
<news>
<title>黑马52期就业快报</title>
<detail>热烈祝贺黑马52期平均薪水突破13k</detail>
<comment>15687</comment>
<image>http://192.168.1.100:8080/images/6.jpg</image>
</news>
<news>
<title>程序员因写代码太乱被杀害</title>
<detail>凶手是死者同事，维护死者代码时完全看不懂而痛下杀手</detail>
<comment>16359</comment>
<image>http://192.168.1.100:8080/images/7.jpg</image>
</news>
</newslist>

public class News {
	private String title;
	private String detail;
	private String comment;
	private String imageUrl;
	
	@Override
	public String toString() {
		return "News [title=" + title + ",detail=" + detail + ",comment="
				+ comment + ",imageUrl=" + imageUrl + "]";
	}
	public String getTitle() {
		return title;
	}
	public void setTitle(String title) {
		this.title = title;
	}
	public String getDetail() {
		return detail;
	}
	public void setDetail(String detail) {
		this.detail = detail;
	}
	public String getComment() {
		return comment;
	}
	public void setComment(String comment) {
		this.comment = comment;
	}
	public String getImageUrl() {
		return imageUrl;
	}
	public void setImageUrl(String imageUrl) {
		this.imageUrl = imageUrl;
	}
		
}

2 解析代码

public class MainActivity extends Activity {
	List<News> newsList;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		getNewsInfo();
	}

    //开辟子线程下载新闻
	private void getNewsInfo() {
		Thread t = new Thread(){
			@Override
			public void run() {
				String path = "http://192.168.13.13:8080/news.xml";
				try {
					URL url = new URL(path);
					HttpURLConnection conn = (HttpURLConnection) url.openConnection();
					conn.setRequestMethod("GET");
					conn.setConnectTimeout(5000);
					conn.setReadTimeout(5000);
					//发送http GET请求，获取相应码
					if(conn.getResponseCode() == 200){
						InputStream is = conn.getInputStream();
						//使用pull解析器，解析这个流
						parseNewsXml(is);
					}
				} catch (Exception e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		};
		t.start();
	}
	
	private void parseNewsXml(InputStream is) {
		XmlPullParser xp = Xml.newPullParser();
		try {
			xp.setInput(is,"utf-8");
			//对节点的事件类型进行判断，就可以知道当前节点是什么节点
			int type = xp.getEventType();
			News news = null;
			while(type != XmlPullParser.END_DOCUMENT){
				switch (type) {
				case XmlPullParser.START_TAG:
					if("newslist".equals(xp.getName())){
						newsList = new ArrayList<News>();
					}
					else if("news".equals(xp.getName())){
						news = new News();
					}
					else if("title".equals(xp.getName())){
						String title = xp.nextText();
						news.setTitle(title);
					}
					else if("detail".equals(xp.getName())){
						String detail = xp.nextText();
						news.setDetail(detail);
					}
					else if("comment".equals(xp.getName())){
						String comment = xp.nextText();
						news.setComment(comment);
					}
					else if("image".equals(xp.getName())){
						String image = xp.nextText();
						news.setImageUrl(image);
					}
					break;
				case XmlPullParser.END_TAG:
					if("news".equals(xp.getName())){
                        //把news对象放着到集合中去
						newsList.add(news);
					}
					break;
				}
				//解析完当前节点后，把指针移动至下一个节点，并返回它的事件类型
				type = xp.next();
			}
			
			//发消息，让主线程设置listview的适配器，如果消息不需要携带数据，可以发送空消息
			handler.sendEmptyMessage(1);
			
			//用于测试 查看数据是否获取正确
//			for (News n : newsList) {
//				System.out.println(n.toString());
//			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}

控制台输出效果

（编辑：李大同）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!