最近本人在玩抖音睡，看到好看的视频想保存下载分享，所以无聊自己写了个脚本，仅供参考学习，请勿用于商业用途！
java版： 
  1. public class DYDecode {
  2.  
  3. 	public static String urlAnalysisMethod(String url) {
  4. 		try {
  5. 			if (isContainChinese(url)) {
  6. 				url = cuthttpschinese(url);
  7. 			}
  8. 			if (url.length() < 40) {
  9. 				url = getURI(url);
  10. 			}
  11. 			return url;
  12. 		} catch (Exception e) {
  13. 			e.printStackTrace();
  14. 			return null;
  15. 		}
  16. 	}
  18. 	public static String NewUrlDecode(String url) {
  19. 		Document doc = null;
  20. 		try {
  21. 			doc = Jsoup.connect(url).timeout(5000).get();
  23. 		} catch (Exception e) {
  24. 			e.printStackTrace();
  25. 		}
  26. 		// System.out.println(doc.data());
  27. 		Elements elem = doc.getElementsByTag("script");
  28. 		String url1 = elem.toString();
  29. 		int start = url1.indexOf("playAddr");
  30. 		url1 = url1.substring(start);
  31. 		int end = url1.indexOf("\",");
  32. 		return url1.substring(11, end).replaceAll("playwm", "play");
  33. 	}
  35. 	// 获取封面，项目要用到
  36. 	public static String getCover(String url) {
  37. 		Document doc = null;
  38. 		try {
  39. 			doc = Jsoup.connect(url).timeout(5000).get();
  41. 		} catch (Exception e) {
  42. 			e.printStackTrace();
  43. 		}
  44. 		Elements elem = doc.getElementsByTag("script");
  45. 		String url1 = elem.toString();
  46. 		int start = url1.indexOf("cover");
  47. 		String str = url1.substring(start);
  48. 		int end = str.indexOf("}");
  49. 		return str.substring(8, end).replaceAll("\"", "");
  50. 	}
  52. 	/**
  53. 	 * @param url
  54. 	 * @return
  55. 	 */
  56. 	// 获取真实地址
  57. 	public static String getURI(String url) {
  58. 		HttpClient httpClient = new DefaultHttpClient();
  59. 		HttpContext httpContext = new BasicHttpContext();
  60. 		HttpGet httpGet = new HttpGet(url);
  61. 		try {
  62. 			// 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
  63. 			HttpResponse response = httpClient.execute(httpGet, httpContext);
  64. 			// 获取重定向之后的主机地址信息
  65. 			HttpHost targetHost = (HttpHost) httpContext.getAttribute(ExecutionContext.HTTP_TARGET_HOST);
  66. 			// 获取实际的请求对象的URI,即重定向之后的地址
  67. 			HttpUriRequest realRequest = (HttpUriRequest) httpContext.getAttribute(ExecutionContext.HTTP_REQUEST);
  68. 			return (HttpHost) httpContext.getAttribute(ExecutionContext.HTTP_TARGET_HOST)
  69. 					+ ((HttpUriRequest) httpContext.getAttribute(ExecutionContext.HTTP_REQUEST)).getURI().toString();
  70. 		} catch (Exception e) {
  71. 			e.printStackTrace();
  72. 			return null;
  73. 		} finally {
  74. 			httpClient.getConnectionManager().shutdown();
  75. 		}
  76. 	}
  78. 	/**
  79. 	 * @param str
  80. 	 * @return
  81. 	 */
  82. 	// 检查是否有中文
  83. 	public static boolean isContainChinese(String str) {
  84. 		Pattern p = Pattern.compile("[\u4e00-\u9fa5]");
  85. 		Matcher m = p.matcher(str);
  86. 		if (m.find()) {
  87. 			return true;
  88. 		}
  89. 		return false;
  90. 	}
  92. 	/**
  93. 	 * 
  94. 	 * @param str
  95. 	 * @return
  96. 	 */
  97. 	// 截取到http开始的字段
  98. 	public static String cuthttpschinese(String str) {
  99. 		int start = str.indexOf("http");
  100. 		return str.substring(start);
  101. 	}
  102. }
想要成品源码的朋友请联系我，谢谢。