是這樣的,之前買車送的垃圾記錄儀不能用了,這兩天狠心買了好點(diǎn)的記錄儀,帶導(dǎo)航、音樂、藍(lán)牙、4G等功能,尋思,既然有這些功能就利用起來,用4G聽歌有點(diǎn)奢侈,就準(zhǔn)備去酷狗下點(diǎn)歌聽,居然都是需要辦會員才能下載,而且vip一月只能下載300首,我這么窮又這么摳怎么可能沖會員,于是百度搜了下怎么免費(fèi)下載,都是python爬取,雖然也會一點(diǎn),但是電腦上沒安裝python,再安裝再研究感覺有點(diǎn)費(fèi)勁,于是就花了半小時(shí)做了這個(gè)爬蟲,技術(shù)一般,只記錄分析實(shí)現(xiàn)過程,大牛請繞行。其中用到了一些庫,包括:jsoup、HttpClient、net.sf.json大家可以自行去下載jar包
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1、分析是否能獲得TOP500歌單
首先,打開酷狗首頁查看酷狗TOP500,說好的500首,怎么就只有22首呢,
是真的只讓看這些還是能找到其余的呢,于是我就看了下這TOP500的鏈接
https://www.kugou.com/yy/rank/home/1-8888.html?from=rank
可以看的出home后邊有個(gè)1,難道這是代表第一頁的意思?于是我就把1改成2,進(jìn)入,果然進(jìn)入了第二頁,至此可以知道我們可以在網(wǎng)頁里獲取這500首的歌單。
2.分析找到真正的mp3下載地址(這個(gè)有點(diǎn)繞)
點(diǎn)一個(gè)歌曲進(jìn)入播放頁面,使用谷歌瀏覽器的控制臺的Elements,搜一下mp3,很輕松就定位到了MP3的位置,
但是使用java訪問的時(shí)候爬取的html里卻沒有該mp3的文件地址,那么這肯定是在該頁面的位置使用了js來加載mp3,那么刷新下網(wǎng)頁,看網(wǎng)頁加載了哪些東西,加載的東西有點(diǎn)多,著重看一下js、php的請求,主要是看里面有沒有mp3的地址,分析細(xì)節(jié)就不用說了,
最終我在列表的
https://wwwapi.kugou.com/yy/index.php?r=play/getdata&callback=jQuery191027067069941080546_1546235744250&hash=667939C6E784265D541DEEE65AE4F2F8&album_id=0&_=1546235744251
這個(gè)請求里發(fā)現(xiàn)了mp3的完整地址,
"play_url": "http:\/\/fs.w.kugou.com\/201812311325\/dcf5b6449160903c6ee48035e11434bb\/G128\/M08\/02\/09\/IIcBAFrZqf2ANOadADn94ubOmaU995.mp3",
那這個(gè)js是怎么判斷是哪首歌的呢,那么只可能是hash這個(gè)參數(shù)來決定歌曲的,然后到播放頁面里找到這個(gè)hash的位置,是在下面的js里
var dataFromSmarty = [{"hash":"667939C6E784265D541DEEE65AE4F2F8","timelength":"237051","audio_name":"\u767d\u5c0f\u767d - \u6700\u7f8e\u5a5a\u793c","author_name":"\u767d\u5c0f\u767d","song_name":"\u6700\u7f8e\u5a5a\u793c","album_id":0}],//當(dāng)前頁面歌曲信息 playType = "search_single";//當(dāng)前播放 </script>
在去java爬取該網(wǎng)頁,查看能否爬到這個(gè)hash,果然,爬取的html里有這段js,到現(xiàn)在mp3的地址也找到了,歌單也找到了,那么下一步就用程序?qū)崿F(xiàn)就可以了。
3.java實(shí)現(xiàn)爬取酷狗mp3
先看一下爬取結(jié)果
找到了資源,程序?qū)崿F(xiàn)就好說了,其中使用到了自己寫的幾個(gè)工具類,自己整理點(diǎn)自己的工具類還是有好處的,以后遇到什么問題就沒必要重新寫了,直接拿來用就可以了。沒什么好說的了,下面直接貼出源碼
SpiderKugou.java
package com.bing.spider; import java.io.IOException; import java.util.regex.Matcher; import java.util.regex.Pattern; import org.jsoup.nodes.Document; import org.jsoup.nodes.Element; import org.jsoup.select.Elements; import com.bing.download.FileDownload; import com.bing.html.HtmlManage; import com.bing.http.HttpGetConnect; import net.sf.json.JSONObject; public class SpiderKugou { public static String filePath = "F:/music/"; public static String mp3 = "https://wwwapi.kugou.com/yy/index.php?r=play/getdata&callback=jQuery191027067069941080546_1546235744250&" + "hash=HASH&album_id=0&_=TIME"; public static String LINK = "https://www.kugou.com/yy/rank/home/PAGE-8888.html?from=rank"; //"https://www.kugou.com/yy/rank/home/PAGE-23784.html?from=rank"; public static void main(String[] args) throws IOException { for(int i = 1 ; i < 23 ; i++){ String url = LINK.replace("PAGE", i + ""); getTitle(url); //download("https://www.kugou.com/song/mfy6je5.html"); } } public static String getTitle(String url) throws IOException{ HttpGetConnect connect = new HttpGetConnect(); String content = connect.connect(url, "utf-8"); HtmlManage html = new HtmlManage(); Document doc = html.manage(content); Element ele = doc.getElementsByClass("pc_temp_songlist").get(0); Elements eles = ele.getElementsByTag("li"); for(int i = 0 ; i < eles.size() ; i++){ Element item = eles.get(i); String title = item.attr("title").trim(); String link = item.getElementsByTag("a").first().attr("href"); download(link,title); } return null; } public static String download(String url,String name) throws IOException{ String hash = ""; HttpGetConnect connect = new HttpGetConnect(); String content = connect.connect(url, "utf-8"); HtmlManage html = new HtmlManage(); String regEx = "\"hash\":\"[0-9A-Z]+\""; // 編譯正則表達(dá)式 Pattern pattern = Pattern.compile(regEx); Matcher matcher = pattern.matcher(content); if (matcher.find()) { hash = matcher.group(); hash = hash.replace("\"hash\":\"", ""); hash = hash.replace("\"", ""); } String item = mp3.replace("HASH", hash); item = item.replace("TIME", System.currentTimeMillis() + ""); System.out.println(item); String mp = connect.connect(item, "utf-8"); mp = mp.substring(mp.indexOf("(") + 1, mp.length() - 3); JSONObject json = JSONObject.fromObject(mp); String playUrl = json.getJSONObject("data").getString("play_url"); System.out.print(playUrl + " == "); FileDownload down = new FileDownload(); down.download(playUrl, filePath + name + ".mp3"); System.out.println(name + "下載完成"); return playUrl; } }
HttpGetConnect.java
package com.bing.http; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.security.NoSuchAlgorithmException; import java.security.cert.CertificateException; import java.security.cert.X509Certificate; import javax.net.ssl.SSLContext; import javax.net.ssl.TrustManager; import javax.net.ssl.X509TrustManager; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.http.HttpEntity; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.HttpClient; import org.apache.http.client.ResponseHandler; import org.apache.http.client.config.RequestConfig; import org.apache.http.client.methods.CloseableHttpResponse; import org.apache.http.client.methods.HttpGet; import org.apache.http.conn.ClientConnectionManager; import org.apache.http.conn.scheme.Scheme; import org.apache.http.conn.scheme.SchemeRegistry; import org.apache.http.conn.ssl.SSLSocketFactory; import org.apache.http.impl.client.BasicResponseHandler; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.impl.client.HttpClients; import org.apache.http.impl.conn.BasicHttpClientConnectionManager; import org.apache.http.params.HttpParams; /** * @說明: * @author: gaoll * @CreateTime:2014-11-13 * @ModifyTime:2014-11-13 */ public class HttpGetConnect { /** * 獲取html內(nèi)容 * @param url * @param charsetName UTF-8、GB2312 * @return * @throws IOException */ public static String connect(String url,String charsetName) throws IOException{ BasicHttpClientConnectionManager connManager = new BasicHttpClientConnectionManager(); CloseableHttpClient httpclient = HttpClients.custom() .setConnectionManager(connManager) .build(); String content = ""; try{ HttpGet httpget = new HttpGet(url); RequestConfig requestConfig = RequestConfig.custom() .setSocketTimeout(5000) .setConnectTimeout(50000) .setConnectionRequestTimeout(50000) .build(); httpget.setConfig(requestConfig); httpget.setHeader("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8"); httpget.setHeader("Accept-Encoding", "gzip,deflate,sdch"); httpget.setHeader("Accept-Language", "zh-CN,zh;q=0.8"); httpget.setHeader("Connection", "keep-alive"); httpget.setHeader("Upgrade-Insecure-Requests", "1"); httpget.setHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36"); //httpget.setHeader("Hosts", "www.oschina.net"); httpget.setHeader("cache-control", "max-age=0"); CloseableHttpResponse response = httpclient.execute(httpget); int status = response.getStatusLine().getStatusCode(); if (status >= 200 && status < 300) { HttpEntity entity = response.getEntity(); InputStream instream = entity.getContent(); BufferedReader br = new BufferedReader(new InputStreamReader(instream,charsetName)); StringBuffer sbf = new StringBuffer(); String line = null; while ((line = br.readLine()) != null){ sbf.append(line + "\n"); } br.close(); content = sbf.toString(); } else { content = ""; } }catch(Exception e){ e.printStackTrace(); }finally{ httpclient.close(); } //log.info("content is " + content); return content; } private static Log log = LogFactory.getLog(HttpGetConnect.class); }
HtmlManage.java
package com.bing.html; import java.io.IOException; import java.util.ArrayList; import java.util.List; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.jsoup.Jsoup; import org.jsoup.nodes.Document; import org.jsoup.nodes.Element; import org.jsoup.select.Elements; import com.bing.http.HttpGetConnect; /** * @說明: * @author: gaoll * @CreateTime:2014-11-13 * @ModifyTime:2014-11-13 */ public class HtmlManage { public Document manage(String html){ Document doc = Jsoup.parse(html); return doc; } public Document manageDirect(String url) throws IOException{ Document doc = Jsoup.connect( url ).get(); return doc; } public List<String> manageHtmlTag(Document doc,String tag ){ List<String> list = new ArrayList<String>(); Elements elements = doc.getElementsByTag(tag); for(int i = 0; i < elements.size() ; i++){ String str = elements.get(i).html(); list.add(str); } return list; } public List<String> manageHtmlClass(Document doc,String clas ){ List<String> list = new ArrayList<String>(); Elements elements = doc.getElementsByClass(clas); for(int i = 0; i < elements.size() ; i++){ String str = elements.get(i).html(); list.add(str); } return list; } public List<String> manageHtmlKey(Document doc,String key,String value ){ List<String> list = new ArrayList<String>(); Elements elements = doc.getElementsByAttributeValue(key, value); for(int i = 0; i < elements.size() ; i++){ String str = elements.get(i).html(); list.add(str); } return list; } private static Log log = LogFactory.getLog(HtmlManage.class); }
FileDownload.java
package com.bing.download; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileOutputStream; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.http.client.config.RequestConfig; import org.apache.http.client.methods.CloseableHttpResponse; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; /** * @說明: * @author: gaoll * @CreateTime:2014-11-20 * @ModifyTime:2014-11-20 */ public class FileDownload { /** * 文件下載 * @param url 鏈接地址 * @param path 要保存的路徑及文件名 * @return */ public static boolean download(String url,String path){ boolean flag = false; CloseableHttpClient httpclient = HttpClients.createDefault(); RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(2000) .setConnectTimeout(2000).build(); HttpGet get = new HttpGet(url); get.setConfig(requestConfig); BufferedInputStream in = null; BufferedOutputStream out = null; try{ for(int i=0;i<3;i++){ CloseableHttpResponse result = httpclient.execute(get); System.out.println(result.getStatusLine()); if(result.getStatusLine().getStatusCode() == 200){ in = new BufferedInputStream(result.getEntity().getContent()); File file = new File(path); out = new BufferedOutputStream(new FileOutputStream(file)); byte[] buffer = new byte[1024]; int len = -1; while((len = in.read(buffer,0,1024)) > -1){ out.write(buffer,0,len); } flag = true; break; }else if(result.getStatusLine().getStatusCode() == 500){ continue ; } } }catch(Exception e){ e.printStackTrace(); flag = false; }finally{ get.releaseConnection(); try{ if(in != null){ in.close(); } if(out != null){ out.close(); } }catch(Exception e){ e.printStackTrace(); flag = false; } } return flag; } private static Log log = LogFactory.getLog(FileDownload.class); }
到這就結(jié)束了,有可能有些代碼沒貼全,主要代碼已經(jīng)差不多,應(yīng)該可以跑起來,多多指教。
以上就是本文的全部內(nèi)容,希望對大家的學(xué)習(xí)有所幫助,也希望大家多多支持創(chuàng)新互聯(lián)。
當(dāng)前名稱:java爬取并下載酷狗TOP500歌曲的方法
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