java抖音视频解析（去水印）

博主第二篇文章，转载请说明出处，有问题请提出来，和博主一起讨论(抖音分享地址更改)

1.真正解析水印并不是解析（理解误区）

2.拿到视频地址后解析出原始地址（有软件可以做到模糊水印，但是只能模糊，真真去掉是

有些许困难的，需要对视频一秒一秒取帧处理，博主实力有限，做不到）

博主喜欢用代码来表示自己所说的，废话不多说，附代码，大家观摩

package com.test.douyin;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.protocol.ExecutionContext;
import org.apache.http.protocol.HttpContext;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.select.Elements;

/**
 * tips：导入jsoup包
 * 《特别注意！！！！！》
 * 这里用的是jdk8，如果运行直接报错，先换一下jdk再试试，有后面的同学已经遇到了
 * 
 * @author hedong
 */
@SuppressWarnings("all")
public class DYDecode {

    public static void main(String[] args) {
		String url = "http://v.douyin.com/dwGThr/";// 解析的网址，长短链接都可以
		String playAddr = getURI(NewUrlDecode(urlAnalysisMethod(url))).trim();// 有空白符
		String cover = getCover(urlAnalysisMethod(url)).trim();// 有空白符
		DecodeVideo dv = new DecodeVideo();
		dv.setPlayAddr(playAddr);
		dv.setCover(cover);
		System.out.println(dv);

		/*
		 * tips:最后得到的结果 DecodeVideo
		 * [cover=https://p3.pstatp.com/large/86920013ac9cb67fe09a.jpg,
		 * playAddr=http://v3-dy-z.ixigua.com/d153fa2e0d25730c9a6ffa949e228598/5b2b4b7e/
		 * video/m/2203826b87d19034f608c53f014a2f5ece01157576f0000077573318095/]
		 */ }

	public static String urlAnalysisMethod(String url) {
		try {
			if (isContainChinese(url)) {
				url = cuthttpschinese(url);
			}
			if (url.length() < 40) {
				url = getURI(url);
			}
			return url;
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}

	public static String NewUrlDecode(String url) {
		Document doc = null;
		try {
			doc = Jsoup.connect(url).timeout(5000).get();

		} catch (Exception e) {
			e.printStackTrace();
		}
		// System.out.println(doc.data());
		Elements elem = doc.getElementsByTag("script");
		String url1 = elem.toString();
		int start = url1.indexOf("playAddr");
		url1 = url1.substring(start);
		int end = url1.indexOf("\",");
		return url1.substring(11, end).replaceAll("playwm", "play");
	}

	// 获取封面，项目要用到
	public static String getCover(String url) {
		Document doc = null;
		try {
			doc = Jsoup.connect(url).timeout(5000).get();

		} catch (Exception e) {
			e.printStackTrace();
		}
		Elements elem = doc.getElementsByTag("script");
		String url1 = elem.toString();
		int start = url1.indexOf("cover");
		String str = url1.substring(start);
		int end = str.indexOf("}");
		return str.substring(8, end).replaceAll("\"", "");
	}

	/**
	 * @param url
	 * @return
	 */
	// 获取真实地址
	public static String getURI(String url) {
		HttpClient httpClient = new DefaultHttpClient();
		HttpContext httpContext = new BasicHttpContext();
		HttpGet httpGet = new HttpGet(url);
		try {
			// 将HttpContext对象作为参数传给execute()方法,则HttpClient会把请求响应交互过程中的状态信息存储在HttpContext中
			HttpResponse response = httpClient.execute(httpGet, httpContext);
			// 获取重定向之后的主机地址信息
			HttpHost targetHost = (HttpHost) httpContext.getAttribute(ExecutionContext.HTTP_TARGET_HOST);
			// 获取实际的请求对象的URI,即重定向之后的地址
			HttpUriRequest realRequest = (HttpUriRequest) httpContext.getAttribute(ExecutionContext.HTTP_REQUEST);
			return (HttpHost) httpContext.getAttribute(ExecutionContext.HTTP_TARGET_HOST)
					+ ((HttpUriRequest) httpContext.getAttribute(ExecutionContext.HTTP_REQUEST)).getURI().toString();
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		} finally {
			httpClient.getConnectionManager().shutdown();
		}
	}

	/**
	 * @param str
	 * @return
	 */
	// 检查是否有中文
	public static boolean isContainChinese(String str) {
		Pattern p = Pattern.compile("[\u4e00-\u9fa5]");
		Matcher m = p.matcher(str);
		if (m.find()) {
			return true;
		}
		return false;
	}

	/**
	 * 
	 * @param str
	 * @return
	 */
	// 截取到http开始的字段
	public static String cuthttpschinese(String str) {
		int start = str.indexOf("http");
		return str.substring(start);
	}
	
}

package com.test.viodedecode;
/**
 * @author hedong
 */
public class DecodeVideo {
	
	private String cover;
	private String playAddr;
	public String getCover() {
		return cover;
	}
	public void setCover(String cover) {
		this.cover = cover;
	}
	public String getPlayAddr() {
		return playAddr;
	}
	public void setPlayAddr(String playAddr) {
		this.playAddr = playAddr;
	}
	@Override
	public String toString() {
		return "DecodeVideo [cover=" + cover + ", playAddr=" + playAddr + "]";
	}
	
 
}

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