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Java程序自动下载谷歌音乐歌词

二.11, 2012 in JAVA

1顶一下近期写了一个android音乐播放器,但是苦于找不到可以自动下载歌词的网站。网上搜的那个已经不能用了。这时候想起可以调用百度或者谷歌的接口来搜索歌词，由于谷歌刚刚推出了谷歌音乐，于是我就想着去尝试下。进入谷歌音乐的主页，然后随便输了首歌去搜索，跳转至歌曲搜索。发现真的有歌词，可惜歌词不是嵌套在网页里的，并且打开歌词网页的地址里包含的是歌词的id，这可这么半呢...[阅读全文]

顶一下

近期写了一个android音乐播放器,但是苦于找不到可以自动下载歌词的网站。网上搜的那个已经不能用了。这时候想起可以调用百度或者谷歌的接口来搜索歌词，由于谷歌刚刚推出了谷歌音乐，于是我就想着去尝试下。

进入谷歌音乐的主页，然后随便输了首歌去搜索，跳转至歌曲搜索。发现真的有歌词，可惜歌词不是嵌套在网页里的，并且打开歌词网页的地址里包含的是歌词的id，这可这么半呢？

于是我就去搜索页面寻找歌曲的id,果然在html源代码中找到了歌曲的id,然后我就用这个id拼接在歌词网址的字符串中，最后顺利地进入了歌词页面。

不过歌词页面中的信息很少，连歌词都是从别的地方读取过来的，html源代码中也没有歌词相应的地址。还好，在页面的框架信息中我看到了歌词的地址，在浏览器输入后就可以直接下载，并且下载后的文件就是歌曲的歌词，不含其他信息。

这样就有思路了：

1.接收参数为歌曲名和歌手（这样可以准确的定位歌词文件），然后把参数拼接在查询字符串后面，进行歌词页面的查询。

2.获取歌词页面的html源代码并进行解析，获取歌曲的id

3.将歌曲的id拼接在歌词框架页面地址的后面，获取歌词框架页面的html源代码

4.解析框架页面的源代码，获取歌词下载地址。

5.下载歌词并保存至文件。

需要注意的是：

1.谷歌音乐的歌曲、歌手都不是很多，有些歌曲可能搜索不到歌词，甚至谷歌就没有收录这些歌曲。

2.谷歌服务器不稳定，歌词可能会下载失败，原因大家都懂得。

3.下载的歌词默认放在工程目录下，可以自行修改歌词位置。

4.谷歌音乐页面编码都是UTF-8的，不需要考虑乱码的问题。

PS：本程序仅仅是抛砖引玉,具体怎么使用就看大家的了。

下面上代码：

工具类

[java]

<pre name=”code” class=”java”>package com.zyc.download_lrc;
/**
* Get lrc from google music
* Version 1.00
* @author zyc
* 2012.2.2
*/

/*
* Step:
* 1.Input music’s name and artist,use google music search engine
* The url like ”http://www.google.cn/music/search?q=name+artist”
* 2.Get music id,the id is starts with ”http://g.top100.cn/16667639/html/lyrics.html?id”
* and id is after
* 3.Use id to get lrc framework html,find download lrc url
* 4.download lrc
* 5.write lrc to file
*
* NOTICE:google work may abnormal,you known
*/

import java.io.BufferedReader;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.SocketTimeoutException;
import java.net.URL;
import java.net.URLConnection;

public class DownloadGoogleLrcTool {
 /*music info start,but can’t get id from this,because the music has no lrc*/
 private final static String ID_HEAD_FLAG = ”<!–freemusic”;
 /*google music engine search head*/
 private final static String SEARCH_ENGINE_HEAD = ”http://www.google.cn/music/search?q=”;
 /*google music lrc by id head*/
 private final static String SEARCH_ID_URL_HEAD = ”http://www.google.cn/music/top100/lyrics?id=”;
 /*google music id flag*/
 private final static String SEARCH_ID_FLAG = ”http://g.top100.cn/16667639/html/lyrics.html?id”;
 /*google music download url flag*/
 private final static String SEARCH_LRC_DOWNLOAD_URL_FLAG = ”http://lyric.top100.cn/”;
 /*”%3D” means ”=”*/
 private final static String SEARCH_HTML_EQUAL = ”%3D”;
 private final static String END_FLAG = ”\\”;
 private final static String LRC_SUFFIX = ”.lrc”;
 private final static String LINE_END = ”\n”;
 /*google music can’t connect return code”*/
 private final static String GOOGLE_SB_RETURN_CODE = ”502″;
 /*error message,you know”*/
 private final static String GOOGLE_SB_MESSAGE = ”google抽风中…你懂的\n请稍后再试”;
 private final static String SPACE = ” ”;
 /*”%20″ means ” ”*/
 private final static String HTML_SPACE = ”%20″;
 private final static String HTML_URL_HEAD = ”http://”;
 /*id is letter and number”*/
 private final static String ID_MATCH = ”^[A-Za-z0-9]+{1}quot;;
 /*download message*/
 private final static String CANNOT_FIND_LEC_MESSAGE = ”无法找到歌词”;
 private final static String FAIL_MESSAGE = ”下载歌曲 %s-%s 歌词失败！\n原因：”;
 private final static String SUCCESS_MESSAGE = ”下载歌曲 %s-%s 歌词成功！\n歌词位置: %s\n”;
 private final static String DOWNLOADING_MESSAGE = ”正在下载歌曲 %s-%s 歌词…\n”;
 /*time out message*/
 private final static String DOWNLOADING_CONNECT_TIME_OUT = ”connect timed out”;
 private final static String DOWNLOADING_CONNECT_TIME_OUT_MESSAGE = ”连接超时，请检查网络配置”;
 private final static String DOWNLOADING_UNKNOWN_MESSAGE = ”未知”;
 /*set timeout = 5s*/
 private final static long CONNECT_TIME_OUT = 5000;
 /*set http proxy,if don’t use http proxy,set it false*/
 private final static boolean USE_HTTP_PROXY = true;
 private final static String FAIL_WRITE_FILE_MESSAGE = ”写入文件失败!”;

    public static void downloadLrcFromGoogle(String name,String artist){
        try {
            System.out.printf(DOWNLOADING_MESSAGE,name,artist);
            /*get lrc*/
            String lrc = downloadLrc(name,artist);
            if(lrc != null){
                /*write lrc to file*/
                String fileName = name + LRC_SUFFIX;
                File file = new File(fileName);
                writeToFile(file, lrc);
                System.out.printf(SUCCESS_MESSAGE, name,artist,file.getAbsoluteFile());
            }
            else
                System.out.println(CANNOT_FIND_LEC_MESSAGE);
        } catch (Exception e) {
            System.out.printf(FAIL_MESSAGE, name,artist);
            if(e.getMessage().contains(GOOGLE_SB_RETURN_CODE))
                System.out.println(GOOGLE_SB_MESSAGE);
            else if(e.getMessage().contains(DOWNLOADING_CONNECT_TIME_OUT)){
                System.out.println(DOWNLOADING_CONNECT_TIME_OUT_MESSAGE);
            }
            else {
                System.out.println(DOWNLOADING_UNKNOWN_MESSAGE);
            }
            //e.printStackTrace();
        }
    }

    private static void init(){
        System.setProperty(“sun.net.client.defaultConnectTimeout”, String.valueOf(CONNECT_TIME_OUT));
        if(USE_HTTP_PROXY){
            //add http proxy setting here

}
}

    private static String downloadLrc(String name,String artist) throws IOException,SocketTimeoutException{
        init();
        /*replace ” ” to ”%2d”*/
        name = name.replaceAll(SPACE, HTML_SPACE);
        artist = artist.replaceAll(SPACE, HTML_SPACE);
        String id = getSongId(name, artist);
        /*can’t find id return null”*/
        if(id == null || !id.matches(ID_MATCH)){
            return null;
        }
        String path = getLrcDownloadUrl(id);
        String lrc = null;
        /*if path isn’t start with ”http”//” ignore*/
        if(path.startsWith(HTML_URL_HEAD))
            lrc = doDownloadLrc(path);
        return lrc;
    }

private static String getSongId(String name,String artist) throws IOException{
 String source = readHtml(SEARCH_ENGINE_HEAD + name + ”+” + artist);
 name = name.replaceAll(HTML_SPACE, SPACE);
 String match01 = ”\”>” + name + ””;
 String match02 = null;
 if(name.contains(SPACE)){
 /*set first letter upper*/
 String[] array = name.split(SPACE);
 for (int i = 0;i < array.length;i++) {
 char firstChar = array[i].charAt(0);
 if(firstChar >= ’a' && firstChar <= ’z'){
 array[i] = array[i].replace(firstChar, (char) (firstChar - 32));//set upper
 }
 }
 String newName = ”";
 for (int i = 0;i < array.length;i++) {
 if(i < array.length - 1)
 newName += array[i] + SPACE;
 else
 newName += array[i];
 }
 match02 = ”\”>” + newName + ””;
 }
 if(!source.contains(match01) && match02 != null && !source.contains(match02)){
 /*may other music return*/
 return null;
 }
 int first = source.indexOf(ID_HEAD_FLAG);
 if(first == -1){
 /*no music id*/
 return null;
 }
 int last = source.indexOf(ID_HEAD_FLAG,first + ID_HEAD_FLAG.length());
 if(last != -1){
 /*ignore only a music id,if have some choose first one*/
 source = source.substring(first,last);
 }
 /*find id*/
 int start = source.indexOf(SEARCH_ID_FLAG);
 int mid = source.indexOf(SEARCH_HTML_EQUAL, start);
 int end = source.indexOf(END_FLAG,mid);
 if(start == -1 || mid == -1 || end == -1){
 //can’t find id
 return null;
 }
 String id = source.substring(mid + HTML_SPACE.length(), end);
 return id;
 }

    private static String getLrcDownloadUrl(String id) throws IOException{
        /*set music lrc html url with id*/
        String source = readHtml(SEARCH_ID_URL_HEAD + id);
        int start = source.indexOf(SEARCH_LRC_DOWNLOAD_URL_FLAG);
        int end = source.indexOf(LRC_SUFFIX,start);
        String urlString = source.substring(start, end + LRC_SUFFIX.length());
        return urlString;
    }

    private static String doDownloadLrc(String path) throws IOException{
        /*download lrc*/
        return readHtml(path);
    }

    private static String readHtml(String urlPath) throws IOException{
        /*use google music search engine*/
        URL url = new URL(urlPath);
        /*connect and get html */
        URLConnection conn = url.openConnection();
        BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
        String line = null;
        StringBuilder stringBuilder = new StringBuilder();
        while ((line = reader.readLine()) != null) {
            stringBuilder.append(line + LINE_END);
        }
        return stringBuilder.toString();
    }

    private static void writeToFile(File file,String buffer) throws IOException{
        /*write to file,file name is music’s name + ”.lrc”*/
        FileWriter writer = new FileWriter(file, false);
        try {
            writer.write(buffer);
        } catch (Exception e) {
            System.out.println(FAIL_WRITE_FILE_MESSAGE);
        }finally{
            writer.close();
        }
    }
}

测试类

[java]

<pre name=”code” class=”java”>package com.zyc.download_lrc;

public class DownloadTest {

    public static void main(String[] args) {
        //only for test
        String name = ”决战斗室”;
        String artist = ”潘玮柏”;
        downloadMusicLrc(name, artist);
    }

    static void downloadMusicLrc(String name,String artist){
        DownloadGoogleLrcTool.downloadLrcFromGoogle(name, artist);
    }

}

测试结果：

正在下载歌曲决战斗室-潘玮柏歌词…
下载歌曲决战斗室-潘玮柏歌词成功！
歌词位置: /project/DownLoadLrc/决战斗室.lrc

歌词如下：

[ti:决战斗室]
[ar:潘玮柏]
[al:高手]
[00:05.00]
[01:20.44][00:16.69]克制不住心跳加速
[01:22.27][00:18.67]太兴奋追求战斗我才满足
[01:24.25][00:20.47]角落处全神贯注
[01:26.25][00:22.57]眼神冰冷像只危险老虎
[01:28.23][00:24.58]拳头蹦带无法束缚
[01:30.25][00:26.55]脉膊跳动的强度快忍不住
[01:32.22][00:28.51]灯在闪人群在喊
[01:34.19][00:30.48]抬起头我完全不屑一顾
[01:36.21][00:32.60]Noboby gonna stop me
[01:38.21][00:34.57]沉默中聆听自己
[01:40.07][00:36.54]Noboby gonna front me
[01:42.23][00:38.51]相信自己绝不会逃避
[01:44.25][00:40.55]Noboby gonna touch me
[01:46.19][00:42.48]呐喊声全场淹没
[01:48.12][00:44.41]推开门走出自我
[01:50.06][00:46.22]This is my life my soul
[02:44.39][02:28.08][01:52.15][00:48.47]紧握灵魂的手
[02:45.75][02:29.93][01:54.03][00:50.35]最后一刻战斗
[02:47.86][02:31.96][01:56.10][00:52.38]黑暗恐惧之中
[02:50.61][02:33.71][01:57.84][00:54.19]决战斗室只剩你我
[02:51.86][02:35.86][02:00.09][00:56.38]倒数的计时钟
[02:53.77][02:37.90][02:02.00][00:58.30]胜利才终结转动
[02:57.37][02:41.51][02:05.59][01:01.84]我闭上眼我站在斗室中
[02:59.29][02:43.35][02:07.50][01:03.94]只剩下Oh oh

然后就可以放进手机同步播放了！

搞定！！！

PHP下载远程文件类(支持断点续传)

二.24, 2010 in PHP

1顶一下1.功能:支持断点续传的下载,能计算传输率,能控制传输率简易使用方法: $object = new httpdownload(); $object->set_byfile($file)%N#H#%;//服务器文件名,包括路径 $object->filename = $filename;//下载另存为的文件名 $object->download(); 3.源文件: <? class httpdownload { var $data = null; var $data_len = 0; var $dat...[阅读全文]

顶一下

1.功能:支持断点续传的下载,能计算传输率,能控制传输率

简易使用方法:

$object = new httpdownload();
$object->set_byfile($file)%N#H#%;//服务器文件名,包括路径
$object->filename = $filename;//下载另存为的文件名
$object->download();

3.源文件:

<?
 class httpdownload {
 var $data = null;
 var $data_len = 0;
 var $data_mod = 0;
 var $data_type = 0;
 var $data_section = 0; //section download
 var $sentSize=0;
 var $handler = array(‘auth’ => null);
 var $use_resume = true;
 var $use_autoexit = false;
 var $use_auth = false;
 var $filename = null;
 var $mime = null;
 var $bufsize = 2048;
 var $seek_start = 0;
 var $seek_end = -1;
 var $totalsizeref = 0;
 var $bandwidth = 0;
 var $speed = 0;
 function initialize() {
 global $HTTP_SERVER_VARS;
 if ($this->use_auth) //use authentication {
 if (!$this->_auth()) //no authentication {
 header(‘WWW-Authenticate: Basic realm=”Please enter your username and password”‘);
 header(‘HTTP/1.0 401 Unauthorized’);
 header(‘status: 401 Unauthorized’);
 if ($this->use_autoexit) exit();
 return false;
 }
 }
 if ($this->mime == null) $this->mime = “application/octet-stream”; //default mime
 if (isset($_SERVER['HTTP_RANGE']) || isset($HTTP_SERVER_VARS['HTTP_RANGE'])) {
 if (isset($HTTP_SERVER_VARS['HTTP_RANGE'])) $seek_range = substr($HTTP_SERVER_VARS['HTTP_RANGE'] , strlen(‘bytes=’));
 else $seek_range = substr($_SERVER['HTTP_RANGE'] , strlen(‘bytes=’));
 $range = explode(‘-’,$seek_range);
 if ($range[0] > 0) {
 $this->seek_start = intval($range[0]);
 }
 if ($range[1] > 0) $this->seek_end = intval($range[1]);
 else $this->seek_end = -1;
 if (!$this->use_resume) {
 $this->seek_start = 0;
 //header(“HTTP/1.0 404 Bad Request”);
 //header(“Status: 400 Bad Request”);
 //exit;
 //return false;
 } else {
 $this->data_section = 1;
 }
 } else {
 $this->seek_start = 0;
 $this->seek_end = -1;
 }
 $this->sentSize=0;
 return true;
}
function header($size,$seek_start=null,$seek_end=null) {
 header(‘Content-type: ‘ . $this->mime);
 header(‘Content-Disposition: attachment; filename=”‘ . $this->filename . ‘”‘);
 header(‘Last-Modified: ‘ . date(‘D, d M Y H:i:s \G\M\T’ , $this->data_mod));
 if ($this->data_section && $this->use_resume) {
 header(“HTTP/1.0 206 Partial Content”);
 header(“Status: 206 Partial Content”);
 header(‘Accept-Ranges: bytes’);
 header(“Content-Range: bytes $seek_start-$seek_end/$size”);
 header(“Content-Length: ” . ($seek_end – $seek_start + 1));
 } else {
 header(“Content-Length: $size”);
 }
}
function download_ex($size) {
 if (!$this->initialize()) return false;
 ignore_user_abort(true);
 //Use seek end here
 if ($this->seek_start > ($size – 1)) $this->seek_start = 0;
 if ($this->seek_end <= 0) $this->seek_end = $size – 1;
 $this->header($size,$seek,$this->seek_end);
 $this->data_mod = time();
 return true;
}
function download() {
 if (!$this->initialize()) return false;
 try {
 error_log(“begin download\n”, 3,”/usr/local/www/apache22/LOGS/apache22_php.err”);
 $seek = $this->seek_start;
 $speed = $this->speed;
 $bufsize = $this->bufsize;
 $packet = 1;
 //do some clean up
 @ob_end_clean();
 $old_status = ignore_user_abort(true);
 @set_time_limit(0);
 $this->bandwidth = 0;
 $size = $this->data_len;
 if ($this->data_type == 0) //download from a file {
 $size = filesize($this->data);
 if ($seek > ($size – 1)) $seek = 0;
 if ($this->filename == null) $this->filename = basename($this->data);
 $res = fopen($this->data,’rb’);
 if ($seek) fseek($res , $seek);
 if ($this->seek_end < $seek) $this->seek_end = $size – 1;
 $this->header($size,$seek,$this->seek_end); //always use the last seek
 $size = $this->seek_end – $seek + 1;
 while (!(connection_aborted() || connection_status() == 1) && $size > 0) {
 if ($size < $bufsize) {
 echo fread($res , $size);
 $this->bandwidth += $size;
 $this->sentSize+=$size;
 } else {
 echo fread($res , $bufsize);
 $this->bandwidth += $bufsize;
 $this->sentSize+=$bufsize;
 }
 $size -= $bufsize;
 flush();
 if ($speed > 0 && ($this->bandwidth > $speed*$packet*1024)) {
 sleep(1);
 $packet++;
 }
 }
 fclose($res);
 }
 elseif ($this->data_type == 1) //download from a string
 {
 if ($seek > ($size – 1)) $seek = 0;
 if ($this->seek_end < $seek) $this->seek_end = $this->data_len – 1;
 $this->data = substr($this->data , $seek , $this->seek_end – $seek + 1);
 if ($this->filename == null) $this->filename = time();
 $size = strlen($this->data);
 $this->header($this->data_len,$seek,$this->seek_end);
 while (!connection_aborted() && $size > 0) {
 if ($size < $bufsize) {
 $this->bandwidth += $size;
 $this->sentSize+=$size;
 } else {
 $this->bandwidth += $bufsize;
 $this->sentSize+=$bufsize;
 }
 echo substr($this->data , 0 , $bufsize);
 $this->data = substr($this->data , $bufsize);
 $size -= $bufsize;
 flush();
 if ($speed > 0 && ($this->bandwidth > $speed*$packet*1024)) {
 sleep(1);
 $packet++;
 }
 }
 } else if ($this->data_type == 2) {
 //just send a redirect header
 header(‘location: ‘ . $this->data);
 }
 if($this->totalsizeref==$this->sentSize )error_log(“end download\n”, 3,”/usr/local/www/apache22/LOGS/apache22_php.err”);
 else error_log(“download is canceled\n”, 3,”/usr/local/www/apache22/LOGS/apache22_php.err”);
 if ($this->use_autoexit) exit();
 //restore old status
 ignore_user_abort($old_status);
 set_time_limit(ini_get(“max_execution_time”));
}
catch(Exception $e) {
 error_log(“cancel download\n”.$e, 3,”/usr/local/www/apache22/LOGS/apache22_php.err”);
}
 return true;
}
function set_byfile($dir) {
 if (is_readable($dir) && is_file($dir)) {
 $this->data_len = 0;
 $this->data = $dir;
 $this->data_type = 0;
 $this->data_mod = filemtime($dir);
 $this->totalsizeref = filesize($dir);
 return true;
 } else return false;
}
function set_bydata($data) {
 if ($data == ”) return false;
 $this->data = $data;
 $this->data_len = strlen($data);
 $this->data_type = 1;
 $this->data_mod = time();
 return true;
}
function set_byurl($data) {
 $this->data = $data;
 $this->data_len = 0;
 $this->data_type = 2;
 return true;
}
function set_lastmodtime($time) {
 $time = intval($time);
 if ($time <= 0) $time = time();
 $this->data_mod = $time;
}
function _auth() {
 if (!isset($_SERVER['PHP_AUTH_USER'])) return false;
 if (isset($this->handler['auth']) && function_exists($this->handler['auth'])) {
 return $this->handler['auth'](‘auth’ , $_SERVER['PHP_AUTH_USER'],$_SERVER['PHP_AUTH_PW']);
 } else return true; //you must use a handler
 }
}
?>

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Entries Tagged ‘下载’

Java程序自动下载谷歌音乐歌词

PHP下载远程文件类(支持断点续传)

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