腾讯视频解析，Java实现

今天学到一个Android网络视频播放程序，但是不知道为什么找了很多个网站的URL都不能播放，用硕鼠找的很多冷门网站的视频也不能用。

所以就想是不是MediaPlayer播放视频的方法实在太OUT了，我想应该是的，但是网上找了个解析腾讯视频的代码（竟然还能用，而且还能解析最新的，看来中国的技术真的是敌不动我不动啊）：                                                                                                                                                                                                                                                                                                                                                                                                                 

package TX;

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

/**获取的网络视频地址无任何广告，为CDN最后返回的结果，可直接播放或下载。有些视频过大，CDN有分段处理，如果多段以“$”隔开。只对获取腾讯网络视频进行了整理，实际上各大网络视频获取方式都一样，只要分析下请求链接与参数，然后模拟请求整理成代码即可。*/
/** 解析腾讯视频 */
public class TX {
	public String getTencentMovieSource(String url) {
		String html = this.getHtml(url, true).replaceAll("    ", "");
		String vid = this.getValue(html, "vid:", 1, "\",", 0);
		String urlXml = "http://vv.video.qq.com/geturl?platform=1&otype=xml&vid="
				+ vid;
		if (urlXml.indexOf("|") == -1)
			return this.parseXmlSource(urlXml);
		else {
			String urls = "";
			String[] uls = urlXml.replace("|", "-").split("-");
			for (int i = 0; i < uls.length; i++) {
				String htmls = "http://vv.video.qq.com/geturl?platform=1&otype=xml&vid="
						+ uls[i];
				urls += this.parseXmlSource(htmls) + "$";
			}
			return urls.substring(0, urls.lastIndexOf("$"));
		}
	}

	private String parseXmlSource(String urlXml) {
		String videoXml = getHtml(urlXml, false);
		return getValue(videoXml, "", "");
	}

	private String getHtml(String url, boolean isformat) {
		System.out.println("Request URL:" + url);
		try {
			URL u = new URL(url);
			HttpURLConnection httpConn = (HttpURLConnection) u.openConnection();
			// 设置user agent确保系统与浏览器版本兼容
			HttpURLConnection.setFollowRedirects(true);
			httpConn.setRequestMethod("GET");
			httpConn.setRequestProperty(
					"User-Agent",
					"Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727)");
			InputStream is = u.openStream();
			int length = 0;
			ByteArrayOutputStream bos = new ByteArrayOutputStream();
			while ((length = is.read()) != -1) {
				bos.write(length);
			}
			if (isformat)
				return new String(bos.toByteArray(), "UTF-8").replace("\r", "")
						.replace("\n", "");
			else
				return new String(bos.toByteArray(), "UTF-8");
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}

	private String getValue(String html, String s1, String s2) {
		try {
			String subHtml = html.substring(html.indexOf(s1));
			subHtml = subHtml.substring(s1.length());
			int s2Len = subHtml.indexOf(s2);
			return String.valueOf(subHtml.substring(0, s2Len));
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}

	private String getValue(String html, String s1, int s1length, String s2,
			int s2length) {
		try {
			StringBuffer subHtml = new StringBuffer(html.substring(html
					.indexOf(s1)));
			return String.valueOf(subHtml.substring(s1.length() + s1length,
					subHtml.indexOf(s2) - s2length));
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}

	public static void main(String[] args) {
		String s = new TX()
				.getTencentMovieSource("http://v.qq.com/cover/8/8oec1592nwztc70.html?vid=b01973axj9x");
		System.out.println("视频源地址:" + s);
	}
}

成功的测试：