获取网络MP3真实地址

MP3网站的歌曲都采用了不同的加密方法，直接从页面的源文件中是找不到其 MP3的网址的。以下有两个public class都可独立运行，只要将其构造方法更名为main方法就可以了，同时还需要在给出的JAVA源代码中找到“//播放或下载代码...”这一行，将 其改为“Thread.sleep(1000)"延时，否则同一IP频繁的连接会遭服务器拒绝或引发服务器的防恶意搜索保护。

 

1.获取百度新歌MP3真实地址

　　百度新歌的网址是http://xinge.baidu.com/，打开该页面后用查看源文件，搜索“{sid:”，会看到这样的文本：

http://xinge.baidu.com/源文件片断

{sid:'468aecfeaabbd9467fb939a2e80da58a.mp3',al:'今 生无缘',ti:'一天爱一点',si:'易欣 孙莺',cp:'华友金信子 ',da:'2010-08-03',cv:'38d9e957d5bdfb788989f1eb12239d8f.jpg',lrc:'b118977f14893a70ab4652031dd1633d.txt',dl:'511',tl:'281394',ico:0}

其中：“sid:”后面是歌曲连接、“al:”后是唱片集、“ti:”后面是歌曲标题、“si:”后面是歌手。

• 读取“sid:”后面用一对单引号括起来的字符串，在前面加上 http://xinge.baidu.com/wgns/url/构成歌曲的链接，例如：http://xinge.baidu.com/wgns /url/468aecfeaabbd9467fb939a2e80da58a.mp3，这个链接是用于打开试听窗口的。
• 试听窗口查看不到源文件，那就编程打开这个歌曲链接的网址并解析其源文件。在用程序接收到的源文件只有一行，在这一行字符串前面加上http://xinge.baidu.com就是MP3的真实网址了，这个网址可用于播放或下载MP3。

源代码如下：

 /*
  * XingeBaidu.java - 获取'百度新歌'的MP3真实网址
  */
 package  jmp123.player;

 import  java.io.BufferedReader;
 import  java.io.InputStream;
 import  java.io.InputStreamReader;
 import  java.net.URL;
 import  java.net.HttpURLConnection;

 public   class  XingeBaidu {
     public  XingeBaidu() {
         String strLine;
         int  beginIndex, endIndex, idx;
         System.out.println("连接到百度新歌\n" );

         try  {
             URL url = new  URL( "http://xinge.baidu.com/" );
             HttpURLConnection objHttp = (HttpURLConnection) url.openConnection();
             objHttp.setRequestProperty("User-Agent" ,  "mozilla/5.0" );
             objHttp.setRequestProperty("Connection" ,  "Keep-Alive" );
             InputStream objIS = objHttp.getInputStream();
             BufferedReader objReader = new  BufferedReader( new  InputStreamReader(objIS));

             while  ((strLine = objReader.readLine()) !=  null ) {
                 if  ((beginIndex = strLine.indexOf( "{sid:" )) != - 1 ) {
                     if  ((idx = strLine.indexOf( "al:" )) != - 1
                             && (endIndex = strLine.indexOf("',ti" )) != - 1
                             && idx + 4  < endIndex)
                         System.out.printf("[唱片集:%s]  " ,strLine.substring(idx+ 4 ,endIndex));
                     if  ((idx = strLine.indexOf( "ti:" )) != - 1
                             && (endIndex = strLine.indexOf("',si" )) != - 1
                             && idx + 4  < endIndex)
                         System.out.printf("%s" , strLine.substring(idx +  4 ,endIndex));
                     if  ((idx = strLine.indexOf( "si:" )) != - 1
                             && (endIndex = strLine.indexOf("',cp" )) != - 1
                             && idx + 4  < endIndex)
                         System.out.printf("  [歌手:%s]" ,strLine.substring(idx+ 4 ,endIndex));
                     System.out.printf("\n" );

                     if  ((endIndex = strLine.indexOf( ".mp3" )) != - 1 ) {
                         strLine = strLine.substring(beginIndex + 6 , endIndex +  4 );
                         getMP3URL("http://xinge.baidu.com/wgns/url/"  + strLine);
                     }
                 }
             }
         } catch  (Exception e) {
             // e.printStackTrace();
         }
     }

     private   void  getMP3URL(String surl)  throws  Exception {
         String strLine;
         URL url = new  URL(surl);
         HttpURLConnection objHttp = (HttpURLConnection) url.openConnection();
         objHttp.setRequestProperty("User-Agent" ,  "mozilla/5.0" );

         InputStream objIS = objHttp.getInputStream();
         BufferedReader objReader = new  BufferedReader( new  InputStreamReader(objIS));

         if  ((strLine = objReader.readLine()) !=  null ) {
             strLine = "http://xinge.baidu.com"  + strLine;
             System.out.println(strLine); //打印查找到的MP3的真实网址
             //播放或下载的代码...
         }
         objHttp.disconnect();
         objHttp = null ;
         objReader.close();
         objReader = null ;
         url = null ;
     }
 }

/*
 * XingeBaidu.java - 获取'百度新歌'的MP3真实网址
 */
package jmp123.player;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.HttpURLConnection;

public class XingeBaidu {
	public XingeBaidu() {
		String strLine;
		int beginIndex, endIndex, idx;
		System.out.println("连接到百度新歌\n");

		try {
			URL url = new URL("http://xinge.baidu.com/");
			HttpURLConnection objHttp = (HttpURLConnection) url.openConnection();
			objHttp.setRequestProperty("User-Agent", "mozilla/5.0");
			objHttp.setRequestProperty("Connection", "Keep-Alive");
			InputStream objIS = objHttp.getInputStream();
			BufferedReader objReader = new BufferedReader(new InputStreamReader(objIS));

			while ((strLine = objReader.readLine()) != null) {
				if ((beginIndex = strLine.indexOf("{sid:")) != -1) {
					if ((idx = strLine.indexOf("al:")) != -1
							&& (endIndex = strLine.indexOf("',ti")) != -1
							&& idx + 4 < endIndex)
						System.out.printf("[唱片集:%s]  ",strLine.substring(idx+4,endIndex));
					if ((idx = strLine.indexOf("ti:")) != -1
							&& (endIndex = strLine.indexOf("',si")) != -1
							&& idx + 4 < endIndex)
						System.out.printf("%s", strLine.substring(idx + 4,endIndex));
					if ((idx = strLine.indexOf("si:")) != -1
							&& (endIndex = strLine.indexOf("',cp")) != -1
							&& idx + 4 < endIndex)
						System.out.printf("  [歌手:%s]",strLine.substring(idx+4,endIndex));
					System.out.printf("\n");

					if ((endIndex = strLine.indexOf(".mp3")) != -1) {
						strLine = strLine.substring(beginIndex + 6, endIndex + 4);
						getMP3URL("http://xinge.baidu.com/wgns/url/" + strLine);
					}
				}
			}
		} catch (Exception e) {
			// e.printStackTrace();
		}
	}

	private void getMP3URL(String surl) throws Exception {
		String strLine;
		URL url = new URL(surl);
		HttpURLConnection objHttp = (HttpURLConnection) url.openConnection();
		objHttp.setRequestProperty("User-Agent", "mozilla/5.0");

		InputStream objIS = objHttp.getInputStream();
		BufferedReader objReader = new BufferedReader(new InputStreamReader(objIS));

		if ((strLine = objReader.readLine()) != null) {
			strLine = "http://xinge.baidu.com" + strLine;
			System.out.println(strLine); //打印查找到的MP3的真实网址
			//播放或下载的代码...
		}
		objHttp.disconnect();
		objHttp = null;
		objReader.close();
		objReader = null;
		url = null;
	}
}

 

2.获取搜狗新歌Top100的MP3真实网址

　　用上面的方法不能获取搜狗新歌100的MP3真实网址，原因可能是其服务 器有更严格的限制，防止用上面的方法去恶意搜索。前两天调试代码时连接上去，接收到的页面源文件中提示输入验证码，所以就不能用程序去解析其MP3网址 了，晕，接连两天都不行，不知道是前两天调试程序连接频繁搜的太猛了还是别的什么原因，触发了网站的防恶意搜索保护。

http://music.sogou.com/song/newtop_1.html源文件片断

 

　　源代码如下，自己对比一下，就能琢磨出与第一种方法有什么不同了。总的步骤是一样的，仍是两步：

• 连接到http://music.sogou.com/song/newtop_1.html从接收到的数据流中查找到歌曲链接。打开这个页面的源文件，查找到window.open(，它后面用一对单引号括起来的内容就是歌曲的链接，这个链接是用于打开试听窗口的。
• 用程序连接到这个歌曲链接，从接收到的数据流中查找以http://开头、以.mp3结尾的字符串，这个字符串就是MP3的真实网址。

 /*
  * SogouNewTop.java - 获取'搜狗音乐新歌TOP100'的MP3真实网址
  */
 package  jmp123.player;

 import  java.io.IOException;
 import  java.io.PrintWriter;
 import  java.io.BufferedReader;
 import  java.io.InputStreamReader;
 import  java.net.Socket;

 /**
  * 创建、发送HTTP请求头
  */
 class  MySocket {
     private  String strReferer;
     private  Socket socket;
     private  PrintWriter pwOut;
     BufferedReader brIn;

     public  MySocket(String strReferer) {
         this .strReferer = strReferer;
     }

     public   void  create(String surl) {
         int  beginIndex, endIndex, iPort =  80 ;
         String strHost = surl.substring(7 );
         endIndex = strHost.indexOf("/" );
         String strPath = strHost.substring(endIndex);
         strHost = strHost.substring(0 , endIndex);
         if ( (beginIndex = strHost.indexOf( ":" )) != - 1 ) {
             if (endIndex - beginIndex >  1 )
                 iPort = Integer.parseInt(strHost.substring(beginIndex+1 , endIndex));
             strHost = strHost.substring(0 , beginIndex);
         }

         try  {
             socket = new  Socket(strHost, iPort);
             pwOut = new  PrintWriter(socket.getOutputStream(),  true );

             // 构建HTTP请求头
             pwOut.println("GET "  + strPath +  " HTTP/1.1" );
             pwOut.println("Host:"  + strHost);
             pwOut.println("Referer:"  + strReferer);
             pwOut.println("Accept:*/*" );
             pwOut.println("User-Agent:Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322)" );
             pwOut.println("Connection: Keep-Alive" );
             pwOut.println();

             // 调用socket.getInputStream方法时才发送HTTP请求头
             brIn = new  BufferedReader( new  InputStreamReader(socket.getInputStream()));
         } catch  (IOException e) {
             System.out.println("创建套接字/输入流错误。" );
             System.exit(1 );
         }
     }

     public  BufferedReader getBufferedReader() {
         return  brIn;
     }

     public   void  close() {
         try  {
             brIn.close();
             pwOut.close();
             socket.close();
         } catch  (IOException e) {
             System.out.println("关闭套接字错误。" );
             System.exit(1 );
         }
     }
 }

 /**
  * 解析搜狗音乐新歌TOP100页面获取MP3真实网址。
  */
 public   class  SogouNewTop {
     private   static   final  String strReferer =  "http://music.sogou.com/song/newtop_1.html" ;
     private  MySocket htmlSocket =  new  MySocket(strReferer);
     private  MySocket urlSocket =  new  MySocket(strReferer);

     /*
      * 查找页面的歌曲链接
      */
     public  SogouNewTop()  throws  Exception {
         System.out.println("连接到搜狗音乐新歌TOP100\n" );
         String strline = "" ;
         htmlSocket.create(strReferer);
         BufferedReader brIn = htmlSocket.getBufferedReader();
         int  beginIndex, endIndex;

         while  ((strline = brIn.readLine()) !=  null ) {
             // 1.查找歌曲名(可省略)
             if  ((beginIndex = strline.indexOf( "consume=phb_song" )) != - 1  ) {
                 strline = strline.substring(beginIndex);
                 if  ((beginIndex = strline.indexOf( ">" )) != - 1
                         && (endIndex = strline.indexOf("<" )) != - 1 ) {
                     strline = strline.substring(beginIndex+1 , endIndex);
                     System.out.println("[歌曲名] "  + strline);
                 }
                 continue ;
             }

             // 2.查找歌曲链接
             if  ((beginIndex = strline.indexOf( "οnclick=\"window.open(" )) != - 1
                     && (beginIndex = strline.indexOf("http://mp3.sogou.com/down.so" )) != - 1
                     && (endIndex = strline.indexOf("'," )) != - 1 ) {
                 strline = strline.substring(beginIndex, endIndex);
                 getMP3URL(strline);
             }
         }
         htmlSocket.close();
     }

     /**
      * 分析歌曲链接找到其真实网址
      */
     private   void  getMP3URL(String surl)  throws  Exception {
         String strline = "" ;
         urlSocket.create(surl);
         BufferedReader brIn = urlSocket.getBufferedReader();
         int  beginIndex, endIndex;

         while  ((strline = brIn.readLine()) !=  null ) {
             if  ((beginIndex = strline.indexOf( "http://" )) != - 1
                     && (endIndex = strline.indexOf(".mp3" )) != - 1 ) {
                 strline = strline.substring(beginIndex, endIndex + 4 );
                 System.out.println(strline);    //打印MP3的真实地址
                 //播放或下载的代码放这......;
                 break ;
             }
         }

         urlSocket.close();
     }
 }

/*
 * SogouNewTop.java - 获取'搜狗音乐新歌TOP100'的MP3真实网址
 */
package jmp123.player;

import java.io.IOException;
import java.io.PrintWriter;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.Socket;

/**
 * 创建、发送HTTP请求头
 */
class MySocket {
	private String strReferer;
	private Socket socket;
	private PrintWriter pwOut;
	BufferedReader brIn;

	public MySocket(String strReferer) {
		this.strReferer = strReferer;
	}

	public void create(String surl) {
		int beginIndex, endIndex, iPort = 80;
		String strHost = surl.substring(7);
		endIndex = strHost.indexOf("/");
		String strPath = strHost.substring(endIndex);
		strHost = strHost.substring(0, endIndex);
		if( (beginIndex = strHost.indexOf(":")) != -1) {
			if(endIndex - beginIndex > 1)
				iPort = Integer.parseInt(strHost.substring(beginIndex+1, endIndex));
			strHost = strHost.substring(0, beginIndex);
		}

		try {
			socket = new Socket(strHost, iPort);
			pwOut = new PrintWriter(socket.getOutputStream(), true);

			// 构建HTTP请求头
			pwOut.println("GET " + strPath + " HTTP/1.1");
			pwOut.println("Host:" + strHost);
			pwOut.println("Referer:" + strReferer);
			pwOut.println("Accept:*/*");
			pwOut.println("User-Agent:Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322)");
			pwOut.println("Connection: Keep-Alive");
			pwOut.println();

			// 调用socket.getInputStream方法时才发送HTTP请求头
			brIn = new BufferedReader(new InputStreamReader(socket.getInputStream()));
		} catch (IOException e) {
			System.out.println("创建套接字/输入流错误。");
			System.exit(1);
		}
	}

	public BufferedReader getBufferedReader() {
		return brIn;
	}
	
	public void close() {
		try {
			brIn.close();
			pwOut.close();
			socket.close();
		} catch (IOException e) {
			System.out.println("关闭套接字错误。");
			System.exit(1);
		}
	}
}

/**
 * 解析搜狗音乐新歌TOP100页面获取MP3真实网址。
 */
public class SogouNewTop {
	private static final String strReferer = "http://music.sogou.com/song/newtop_1.html";
	private MySocket htmlSocket = new MySocket(strReferer);
	private MySocket urlSocket = new MySocket(strReferer);

	/*
	 * 查找页面的歌曲链接
	 */
	public SogouNewTop() throws Exception {
		System.out.println("连接到搜狗音乐新歌TOP100\n");
		String strline = "";
		htmlSocket.create(strReferer);
		BufferedReader brIn = htmlSocket.getBufferedReader();
		int beginIndex, endIndex;

		while ((strline = brIn.readLine()) != null) {
			// 1.查找歌曲名(可省略)
			if ((beginIndex = strline.indexOf("consume=phb_song")) != -1 ) {
				strline = strline.substring(beginIndex);
				if ((beginIndex = strline.indexOf(">")) != -1
						&& (endIndex = strline.indexOf("<")) != -1) {
					strline = strline.substring(beginIndex+1, endIndex);
					System.out.println("[歌曲名] " + strline);
				}
				continue;
			}

			// 2.查找歌曲链接
			if ((beginIndex = strline.indexOf("οnclick=\"window.open(")) != -1
					&& (beginIndex = strline.indexOf("http://mp3.sogou.com/down.so")) != -1
					&& (endIndex = strline.indexOf("',")) != -1) {
				strline = strline.substring(beginIndex, endIndex);
				getMP3URL(strline);
			}
		}
		htmlSocket.close();
	}

	/**
	 * 分析歌曲链接找到其真实网址
	 */
	private void getMP3URL(String surl) throws Exception {
		String strline = "";
		urlSocket.create(surl);
		BufferedReader brIn = urlSocket.getBufferedReader();
		int beginIndex, endIndex;

		while ((strline = brIn.readLine()) != null) {
			if ((beginIndex = strline.indexOf("http://")) != -1
					&& (endIndex = strline.indexOf(".mp3")) != -1) {
				strline = strline.substring(beginIndex, endIndex + 4);
				System.out.println(strline);	//打印MP3的真实地址
				//播放或下载的代码放这......;
				break;
			}
		}

		urlSocket.close();
	}
}

 

　　MP3网站的加密方法经常变更，到目前为止这种方法可用，不能保证一直可用。应用示例到http://jmp123.sf.net/ 下载最新的程序（zip压缩包），程序用法见其中的readme.txt。