资源下载 - 从此开始!

下载我_精品源码软件教程资源网

您的位置:首页 > 建站教程 > 网站开发 > PHP教程 > 正文

PHPCrawl爬虫库实现抓取酷狗歌单的方法示例

2017-12-23 04:38 来源:www.xiazaiwo.net 编辑:admin

本文实例讲述了PHPCrawl爬虫库实现抓取酷狗歌单的方法。分享给大家供大家参考,具体如下:

本人看了网络爬虫相关的视频后,手痒痒,想爬点什么。最近Facebook上表情包大战很激烈,就想着把所有表情包都爬下来,却一时没有找到合适的VPN,因此把酷狗最近一月精选歌曲和简单介绍抓取到本地。代码写得有点乱,自己不是很满意,并不想放上来丢人现眼。不过转念一想,这好歹是自己第一次爬虫,于是...就有了如下不堪入目的代码~~~(由于抓取的数据量较小,所以没有考虑多进程什么的,不过我看了一下PHPCrawl的文档,发现PHPCrawl库已经把我能想到的功能都封装好了,实现起来很方便)

<?php
header("Content-type:text/html;charset=utf-8");
// It may take a whils to crawl a site ...
set_time_limit(10000);
include("libs/PHPCrawler.class.php");
class MyCrawler extends PHPCrawler {
  function handleDocumentInfo($DocInfo) {
    // Just detect linebreak for output ("\n" in CLI-mode, otherwise "<br>").
    if (PHP_SAPI == "cli") $lb = "\n";
    else $lb = "<br />";
    $url = $DocInfo->url;
    $pat = "/http:\/\/www\.kugou\.com\/yy\/special\/single\/\d+\.html/";
    if(preg_match($pat,$url) > 0){
    $this->parseSonglist($DocInfo);
    }
    flush();
  }
  public function parseSonglist($DocInfo){
    $content = $DocInfo->content;
    $songlistArr = array();
    $songlistArr['raw_url'] = $DocInfo->url;
    //解析歌曲介绍
    $matches = array();
    $pat = "/<span>名称:<\/span>([^(<br)]+)<br/";
    $ret = preg_match($pat,$content,$matches);
    if($ret>0){
      $songlistArr['title'] = $matches[1];
    }else{
      $songlistArr['title'] = '';
    }
    //解析歌曲
    $pat = "/<a title=\"([^\"]+)\" hidefocus=\"/";
    $matches = array();
    preg_match_all($pat,$content,$matches);
    $songlistArr['songs'] = array();
    for($i = 0;$i < count($matches[0]);$i++){
      $song_title = $matches[1][$i];
      array_push($songlistArr['songs'],array('title'=>$song_title));
    }
    echo "<pre>";
    print_r($songlistArr);
    echo "</pre>";
    }
  }
$crawler = new MyCrawler();
// URL to crawl
$start_url="http://www.kugou.com/yy/special/index/1-0-2.html";
$crawler->setURL($start_url);
// Only receive content of files with content-type "text/html"
$crawler->addContentTypeReceiveRule("#text/html#");
//链接扩展
$crawler->addURLFollowRule("#http://www\.kugou\.com/yy/special/single/\d+\.html$# i");
$crawler->addURLFollowRule("#http://www.kugou\.com/yy/special/index/\d+-\d+-2\.html$# i");
// Store and send cookie-data like a browser does
$crawler->enableCookieHandling(true);
// Set the traffic-limit to 1 MB(1000 * 1024) (in bytes,
// for testing we dont want to "suck" the whole site)
//爬取大小无限制
$crawler->setTrafficLimit(0);
// Thats enough, now here we go
$crawler->go();
// At the end, after the process is finished, we print a short
// report (see method getProcessReport() for more information)
$report = $crawler->getProcessReport();
if (PHP_SAPI == "cli") $lb = "\n";
else $lb = "<br />";
echo "Summary:".$lb;
echo "Links followed: ".$report->links_followed.$lb;
echo "Documents received: ".$report->files_received.$lb;
echo "Bytes received: ".$report->bytes_received." bytes".$lb;
echo "Process runtime: ".$report->process_runtime." sec".$lb; 
?>

PS:这里再为大家提供2款非常方便的正则表达式工具供大家参考使用:

JavaScript正则表达式在线测试工具:
http://tools.jb51.net/regex/javascript

正则表达式在线生成工具:
http://tools.jb51.net/regex/create_reg

更多关于PHP相关内容感兴趣的读者可查看本站专题:《php正则表达式用法总结》、《PHP数组(Array)操作技巧大全》、《PHP基本语法入门教程》、《PHP运算与运算符用法总结》、《php面向对象程序设计入门教程》、《PHP网络编程技巧总结》、《php字符串(string)用法总结》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总

希望本文所述对大家PHP程序设计有所帮助。

打赏一下,我们会为大家提供更多优质资源!

相关文章,95%的人会看!{有内幕、有真相...}

看过本文的人还看过

关闭

微信扫一扫

站长微信账号