从千千静听的歌词服务器查询音乐的 LRC 歌词

最近要搞这个，百度一下，发现有 php 版本的代码，搞来翻译一下。

1. package org.iscripts.services;
   
2. 
   
3. import java.io.IOException;
   
4. import java.io.StringReader;
   
5. import java.io.UnsupportedEncodingException;
   
6. 
   
7. import org.dom4j.Document;
   
8. import org.dom4j.DocumentException;
   
9. import org.dom4j.Element;
   
10. import org.dom4j.Node;
    
11. import org.dom4j.io.SAXReader;
    
12. import org.iscripts.common.net.HttpGet;
    
13. 
    
14. /**
    
15. * @author 林俊海(ialvin.cn) 广东·普宁·里湖
    
16. */
    
17. public class LrcGet {
    
18.   public static void main(String[] args) throws Exception {
    
19.     System.out.println(query("你把爱情给了谁", "王强"));
    
20.   }
    
21. 
    
22.   public static String query(String title, String artist)
    
23.       throws DocumentException, NumberFormatException, IOException {
    
24.     String URL = "http://ttlrcct.qianqian.com/dll/lyricsvr.dll?sh?Artist={ar}&Title={ti}&Flags=0";
    
25.     URL = URL.replace("{ar}", encode(artist))
    
26.         .replace("{ti}", encode(title));
    
27.     String result = "";
    
28.     try {
    
29.       result = HttpGet.get(URL);
    
30.     } catch (Exception e) {
    
31.       e.printStackTrace();
    
32.     }
    
33.     // 需要 dom4j-1.6.1.jar , 使用可参考 dom4j 手册
    
34.     Document doc = new SAXReader().read(new StringReader(result));
    
35.     // XML中可能包含多个匹配结果，我们只取一个
    
36.     Node n = doc.selectSingleNode("/result/lrc");
    
37.     if (n == null)
    
38.       return null;
    
39.     Element e = (Element) n;
    
40.     result = e.attributeValue("id");
    
41.     artist = e.attributeValue("artist");
    
42.     title = e.attributeValue("title");
    
43. 
    
44.     URL = "http://ttlrcct2.qianqian.com/dll/lyricsvr.dll?dl?Id={id}&Code={code}";
    
45.     URL = URL.replace("{id}", result).replace("{code}",
    
46.         verifyCode(artist, title, Integer.parseInt(result, 10)));
    
47.     return HttpGet.get(URL);
    
48.   }
    
49. 
    
50.   public static String verifyCode(String artist, String title, int lrcId)
    
51.       throws UnsupportedEncodingException {
    
52.     byte[] bytes = (artist + title).getBytes("UTF-8");
    
53.     int[] song = new int[bytes.length];
    
54.     for (int i = 0; i < bytes.length; i++)
    
55.       song[i] = bytes[i] & 0xff;
    
56.     int intVal1 = 0, intVal2 = 0, intVal3 = 0;
    
57.     intVal1 = (lrcId & 0xFF00) >> 8;
    
58.     if ((lrcId & 0xFF0000) == 0) {
    
59.       intVal3 = 0xFF & ~intVal1;
    
60.     } else {
    
61.       intVal3 = 0xFF & ((lrcId & 0x00FF0000) >> 16);
    
62.     }
    
63.     intVal3 = intVal3 | ((0xFF & lrcId) << 8);
    
64.     intVal3 = intVal3 << 8;
    
65.     intVal3 = intVal3 | (0xFF & intVal1);
    
66.     intVal3 = intVal3 << 8;
    
67.     if ((lrcId & 0xFF000000) == 0) {
    
68.       intVal3 = intVal3 | (0xFF & (~lrcId));
    
69.     } else {
    
70.       intVal3 = intVal3 | (0xFF & (lrcId >> 24));
    
71.     }
    
72.     int uBound = bytes.length - 1;
    
73.     while (uBound >= 0) {
    
74.       int c = song[uBound];
    
75.       if (c >= 0x80)
    
76.         c = c - 0x100;
    
77.       intVal1 = c + intVal2;
    
78.       intVal2 = intVal2 << (uBound % 2 + 4);
    
79.       intVal2 = intVal1 + intVal2;
    
80.       uBound -= 1;
    
81.     }
    
82.     uBound = 0;
    
83.     intVal1 = 0;
    
84.     while (uBound <= bytes.length - 1) {
    
85.       int c = song[uBound];
    
86.       if (c >= 128)
    
87.         c = c - 256;
    
88.       int intVal4 = c + intVal1;
    
89.       intVal1 = intVal1 << (uBound % 2 + 3);
    
90.       intVal1 = intVal1 + intVal4;
    
91.       uBound += 1;
    
92.     }
    
93.     int intVal5 = intVal2 ^ intVal3;
    
94.     intVal5 = intVal5 + (intVal1 | lrcId);
    
95.     intVal5 = intVal5 * (intVal1 | intVal3);
    
96.     intVal5 = intVal5 * (intVal2 ^ lrcId);
    
97.     return String.valueOf(intVal5);
    
98.   }
    
99. 
    
100.   private static String encode(String value) {
     
101.     if (value == null)
     
102.       value = "";
     
103.     value = value.replace(" ", "").replace("'", "").toLowerCase();
     
104.     byte[] bytes = null;
     
105.     try {
     
106.       bytes = value.getBytes("UTF-16LE");
     
107.     } catch (UnsupportedEncodingException e) {
     
108.       e.printStackTrace();
     
109.       bytes = value.getBytes();
     
110.     }
     
111.     return stringify(bytes);
     
112.   }
     
113. 
     
114.   final private static char[] digit = { '0', '1', '2', '3', '4', '5', '6',
     
115.       '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
     
116. 
     
117.   private static String stringify(byte[] bytes) {
     
118.     char[] str = new char[2];
     
119.     StringBuilder builder = new StringBuilder();
     
120.     for (byte byteValue : bytes) {
     
121.       str[0] = digit[(byteValue >>> 4) & 0X0F];
     
122.       str[1] = digit[byteValue & 0X0F];
     
123.       builder.append(str);
     
124.     }
     
125.     return builder.toString();
     
126.   }
     
127. }

复制代码

其中 HttpGet.get(.....)  方法是 HTTP 抓取的功能，参考：
http://www.iscripts.org/bbs/viewthread.php?tid=84

ASP 版的千千静听 LRC 歌词查询 请点这里