抓取“华强电子网”供应商程序 

  1 <?php
  2 /** 
  3 * 抓取“华强电子网”供应商主程序 
  4 * author Lee. 
  5 * Last modify $Date: 2012-2-2 12:55:35 $ 
  6 */
  7 require_once './config.inc.php';
  8 class huaqiang {
  9     private $key; // 型号
 10     private $pageNum; // 页码
 11     
 12     /**
 13      * 入口程序
 14      */
 15     public function go($key) {
 16         $this->key = $key;
 17         if ($this->checkIsExistsData()) {
 18             $this->pageNum = $this->getPageNum();
 19             $this->getInfo();
 20         }
 21     }
 22     
 23     /**
 24      * 获取页面内容
 25      * @param Number $page
 26      * @return string
 27      */
 28     private function getContent($page=1) {
 29         $re = file_get_contents($this->getUrl($this->key, $page));
 30         return $re;
 31     }
 32     
 33     /**
 34      * 检查第一页是否有数据
 35      * @return 有返回 true；无返回 false
 36      */
 37     private function checkIsExistsData() {
 38         if (stristr($this->getContent(), '<span class="s_curr g_vm">1</span>')) {
 39             return true;
 40         } else {
 41             return false;
 42         }
 43     }
 44     
 45     /**
 46      * 获取供应商 url 链接数组
 47      * @return ArrayObject
 48      */
 49     private function getInfo() {
 50         if ($this->pageNum==1) { # 处理只有一页的情况
 51             $arr = $this->shopAddContact($this->shopUrlMatchReArr($this->getContent()));
 52             # 循环抓取信息
 53             foreach ($arr as $k=>$v) {
 54                 $infoArr = $this->getInfoByShopUrl($v);
 55                 if ($this->execAdd($infoArr)) echo 'Add Success!!';
 56                 $this->sleep();
 57             }
 58             $this->sleep();
 59         } elseif ($this->pageNum>1) { # 多页
 60             for ($i=1; $i<=$this->pageNum; $i++) {
 61                 $arr = $this->shopAddContact($this->shopUrlMatchReArr($this->getContent($i)));
 62                 # 循环抓取信息
 63                 foreach ($arr as $k=>$v) {
 64                     $infoArr = $this->getInfoByShopUrl($v);
 65                     if ($this->execAdd($infoArr)) echo 'Add Success!!';
 66                     $this->sleep();
 67                 }
 68                 $this->sleep();
 69             }
 70         }    
 71     }
 72     
 73     /**
 74      * 执行添加数据库
 75      * @param array $infoArr
 76      * @return Number 是否添加成功
 77      */
 78     private function execAdd($infoArr) {
 79         $m = new Model();
 80         if (!$m->isExists('huaqiang', "company='{$infoArr['company']}'")) {
 81             $num = $m->insert('huaqiang', array('company','mobile','phone','fax','region','address','website','zip','email','qq','msn','market','shopUrl'), array($infoArr['company'],$infoArr['mobile'],$infoArr['phone'],$infoArr['fax'],$infoArr['region'],$infoArr['address'],$infoArr['website'],$infoArr['zip'],$infoArr['email'],$infoArr['qq'],$infoArr['msn'],$infoArr['market'],$infoArr['shopUrl']));
 82         }
 83         return $num;
 84     }
 85     
 86     /**
 87      * 抓取信息
 88      * @param $url 
 89      * @return ArrayObject
 90      */
 91     private function getInfoByShopUrl($url) {
 92         $re = $mobileRe = $faxRe = $marketRe = $msnRe = $zipRe = $urlRe = $emailRe = $qqRe = $this->getUrlInfo($url);
 93         preg_match_all('/<li class=\"g\_fl tit\">公司名称：<\/li><li class="g_fl cont">(.+)<\/li>.+<li class="g_fl tit">电话：<\/li><li class=\"g\_fl cont\">(.+)<\/li>.+<li class=\"g\_fl tit\">所在地区：<\/li><li class=\"g\_fl cont\">(.+)<\/li>.+<li class=\"g\_fl tit\">详细地址：<\/li><li class=\"g\_fl cont\">(.+)<\/li>.+<li class=\"g\_fl tit\">QQ：<\/li><li class=\"g\_fl cont\">(.+)<\/li>/Usi', $re, $shopArr);
 94         preg_match_all('/<li class=\"g\_fl tit\">手机：<\/li><li class=\"g\_fl cont\">(.*)<\/li>/Usi', $mobileRe, $mobileArr);
 95         preg_match_all('/<li class=\"g\_fl tit\">传真：<\/li><li class=\"g\_fl cont\">(.*)<\/li>/Usi', $faxRe, $faxArr);
 96         preg_match_all('/<li class=\"g\_fl tit\">网址：<\/li><li class=\"g\_fl cont\">(.*)<\/li>/Usi', $urlRe, $urlArr);
 97         preg_match_all('/<li class=\"g\_fl tit\">MSN：<\/li><li class=\"g\_fl cont\">(.*)<\/li>/Usi', $msnRe, $msnArr);
 98         preg_match_all('/<li class=\"g\_fl tit\">邮政编码：<\/li><li class=\"g\_fl cont\">(.*)<\/li>/Usi', $zipRe, $zipArr);
 99         preg_match_all('/<li class=\"g\_fl tit\">所属电子市场：<\/li><li class=\"g\_fl cont\">(.*)<\/li>/Usi', $marketRe, $marketArr);
100         preg_match_all('/<li class=\"g\_fl tit\">电子邮箱：<\/li><li class=\"g\_fl cont cor\">(.*)<\/li>/Usi', $emailRe, $emailArr);
101         preg_match_all('/<li class=\"g\_fl tit\">QQ：<\/li><li class=\"g\_fl cont\">(.*)<\/li>/Usi', $qqRe, $qqArr);
102         $infoArr = array(
103             'company'=>trim($shopArr[1][0]),
104             'mobile'=>empty($mobileArr[1][0]) ? '' : $mobileArr[1][0],
105             'phone'=>$this->stripPhoneTags(trim($shopArr[2][0])),
106             'fax'=>empty($faxArr[1][0]) ? '' : $faxArr[1][0],
107             'region'=>trim($shopArr[3][0]),
108             'address'=>trim($shopArr[4][0]),
109             'zip'=>empty($zipArr[1][0]) ? '' : $zipArr[1][0],
110             'email'=>empty($emailArr[1][0]) ? '' : $emailArr[1][0],
111             'qq'=>empty($qqArr[1][0]) ? '' : $qqArr[1][0],
112             'msn'=>empty($msnArr[1][0]) ? '' : $msnArr[1][0],
113             'market'=>empty($marketArr[1][0]) ? '' : $marketArr[1][0],
114             'website'=>empty($urlArr[1][0]) ? '' : $this->stripATags($urlArr[1][0]),
115             'shopUrl'=>$url
116         );
117         return $infoArr;
118     }
119     
120     /**
121      * 供应商店铺链接添加 contact.html
122      * @param array $arr
123      * @return string     
124      */
125     private function shopAddContact($arr) {
126         foreach ($arr as $k=>$v) {
127             $arr[$k] = $v . '/contact.html';
128         }
129         return $arr;
130     }
131     
132     /**
133      * 去掉网址的 A 标签
134      * @param string $site
135      * @return string
136      */
137     private function stripATags($site) {
138         $site = preg_replace('/<a.+>(.+)<\/a>/', '\1', $site);
139         return $site;
140     }
141     
142     /**
143      * 去掉手机多余标签
144      * @param string $phone
145      * @return string
146      */
147     private function stripPhoneTags($phone) {
148         $phone = str_replace('<span>', '', $phone);
149         $phone = str_replace('</span>', ' ', $phone);
150         $phone = str_replace('<br />', '', $phone);
151         return $phone;
152     }
153     
154     /**
155      * 根据页面获取供应商 url 数组
156      * @param string $re
157      * @return ArrayObject
158      */
159     private function shopUrlMatchReArr($re) {
160         preg_match_all('/<li class="col3"><a class=\"company\" target=\"\_blank\" href=\"(.+)\" value=\".+\">.+<\/a>/Usi', $re, $arr);
161         $arr = array_unique($arr[1]);
162         return $arr;
163     }
164     
165     /**
166      * 获取页码
167      * @return Number
168      */
169     private function getPageNum() {
170         $i = 1;
171         while (true) {
172             $re = $this->getContent($i);
173             if (stristr($re, '<span class="g_vm s_f0f s_f0f1"  title="下一页">')) break;
174             $i++;
175             $this->sleep();
176         }
177         return $i;
178     }
179     
180     /**
181      * 获取 URL 链接
182      * @param string $str
183      * @param int $page 页码
184      * @return string
185      */
186     private function getUrl($str, $page=1) {
187         return "http://www.hqew.com/ic/{$str}_____0_00_0_{$page}.html";
188     }
189     
190     /**
191      * 获取页面内容
192      * @param string $url
193      * @return string
194      */
195     private function getUrlInfo($url) {
196         $re = file_get_contents($url);
197         return $re;
198     }
199     
200     /**
201      * 休眠时间，默认5秒
202      */
203     private function sleep($seconds=5) {
204         sleep($seconds);    
205     }
206 }
207 /**
208  * 使用方法：1、先实例化一个类；2、调用 go($param) 方法，$param 为型号
209  * 程序运行思路：根据“华强电子网”的IC搜索功能，输入型号进行搜索，然后抓取供应商信息
210  */
211 /**
212  * 数据库结构
213  * 
214 CREATE TABLE `huaqiang` (
215     `id` mediumint(8) unsigned NOT NULL auto_increment,
216     `company` varchar(500) NOT NULL,
217     `mobile` varchar(500) NOT NULL,
218     `phone` varchar(500) NOT NULL,
219     `fax` varchar(500) NOT NULL,
220     `region` varchar(500) NOT NULL,
221     `address` varchar(500) NOT NULL,
222     `website` varchar(200) NOT NULL,
223     `zip` varchar(100) NOT NULL,
224     `email` varchar(500) NOT NULL,
225     `qq` varchar(200) NOT NULL,
226     `msn` varchar(200) NOT NULL,
227     `market` varchar(500) NOT NULL,
228     `shopUrl` varchar(200) NOT NULL,
229     PRIMARY KEY  (`id`)
230 ) ENGINE=InnoDB DEFAULT CHARSET=utf8
231  */
232 $c = new huaqiang();
233 $arr = array_unique(array('MAX3232', 'AML8613', 'MT6225A', 'OM8373PS/N3/A', 'PT7313', 'MAX8212ESA', 'TL431', 'S3C2440', 'TMS320F2812PGFA', 'PCM1704', 'AN6717', 'CA3162E', 'CA3161E', 'LM393N', 'DS18B20', 'SHT10', 'AML8613', 'AN6717', 'LM393N', 'CA3161E', 'CA3162E', 'PCM1704', 'STK392-040', 'K1667', 'MAX232', 'STM32F103', 'LM358'));
234 foreach ($arr as $v) {
235     $c->go($v);
236 }
237 ?>

posted @ 2012-08-19 21:33  小2010  阅读(447)  评论(0)  编辑  收藏  举报