以正方教务系统替例,用php模拟登陆抓取课表、空教室

WBOY
Release: 2016-06-13 12:19:58
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以正方教务系统为例,用php模拟登陆抓取课表、空教室

  课程格子和超级课程表这两个应用,想必大学生都很熟悉,使用自己的学号和教务系统的密码,就可以将自己的课表导入,随时随地都可以在手机上查看。

  其实稍微了解一点php的话,我们也可以做一个类似这样的web 应用。

  1,解决掉验证码

    其实这是正方的一个小bug,当我们进入登陆界面时,浏览器会去请求服务器,服务器会生成一个验证码图片。如果我们不去请求这个图片,那么正方后台也不会生成相应的        验证码,于是这样我们就有了可乘之机,让我高兴会儿~这时,我们在不填写验证码的情况下,可以很流畅的进入。大家可以在自己的电脑上禁止访问验证码的地址,然后试试这        是不是真的~当然,这只对正方有效。

  2,php 的curl 模拟登陆

    这里直接贴一个脚本之家对 curl 的讲解吧 http://www.jb51.net/article/51299.htm

    接下来就是相关代码了,相信很多人和我一样,只喜欢看例子,对于长篇大论的讲解,转头就走……不过这个习惯还是不好……废话不多说!

    

//模拟登陆	function curl_request($url,$post='',$cookie='', $returnCookie=0){	        $curl = curl_init();	        curl_setopt($curl, CURLOPT_URL, $url);	        curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/6.0)');	        curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1);	        curl_setopt($curl, CURLOPT_AUTOREFERER, 1);	        curl_setopt($curl, CURLOPT_REFERER, "这里一定要换成教务系统登陆的url"); //填写教务系统url	        if($post) {	            curl_setopt($curl, CURLOPT_POST, 1);	            curl_setopt($curl, CURLOPT_POSTFIELDS, http_build_query($post));	        }	        if($cookie) {	            curl_setopt($curl, CURLOPT_COOKIE, $cookie);	        }	        curl_setopt($curl, CURLOPT_HEADER, $returnCookie);	        curl_setopt($curl, CURLOPT_TIMEOUT, 20);	        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);	        $data = curl_exec($curl);	        if (curl_errno($curl)) {	            return curl_error($curl);	        }	        curl_close($curl);	        if($returnCookie){	            list($header, $body) = explode("\r\n\r\n", $data, 2);	            preg_match_all("/Set\-Cookie:([^;]*);/", $header, $matches);	            $info['cookie']  = substr($matches[1][0], 1);	            $info['content'] = $body;	            return $info;	        }else{	            return $data;	        }    }
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  3,教务系统登陆页面的隐藏字段

    举个栗子

    

    <input type="hidden" name="__VIEWSTATE" value="dDwyODE2NTM0OTg7Oz61eIbnKVojBioGYtg2vsy2SklwiA==">
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    这些东西在登陆的时候也是需要带上的,顺便贴出函数,顺便暴漏了博主的学校……皇家种地大学(主要是正则表达式的运用)

    

    <br />  //登陆页面的隐藏字段<br />  function getView(){	    $url = 'http://jw.hzau.edu.cn/default2.aspx';	    $result = curl_request($url);	    $pattern = '/<input type="hidden" name="__VIEWSTATE" value="(.*?)" \/>/is';	    preg_match_all($pattern, $result, $matches);	    $res[0] = $matches[1][0];	         	    return $res[0] ;	}
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  //返回教室查询页面的隐藏值
  private function getViewJs($cookie,$xh){
    $url = "http://jw.hzau.edu.cn/xxjsjy.aspx?xh={$xh}";
    $result = curl_request($url,'',$cookie);
    $pattern = '//is';
    preg_match_all($pattern, $result, $matches);
    $res[0] = $matches[1][0];
    return $res[0] ;
  }

  4,cookie 的获取

    

function login($xh,$pwd){	    $url = 'http://jw.hzau.edu.cn/default2.aspx';	    $post['__VIEWSTATE'] = $this->getView();	    $post['txtUserName'] = $xh; //填写学号	    $post['TextBox2'] = $pwd;  //填写密码	    $post['txtSecretCode'] = '';	    $post['lbLanguage'] = '';	    $post['hidPdrs'] = '';	    $post['hidsc'] = '';	    $post['RadioButtonList1'] = iconv('utf-8', 'gb2312', '学生');	    $post['Button1'] = iconv('utf-8', 'gb2312', '登录');	    $result = curl_request($url,$post,'', 1);	    return $result['cookie'];	}
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  5,让我们来试试查课表的功能,格式有点乱额,大家凑合着看,我把课表转成了一个二维关联数组

    

//返回课表字符串private function classresult($xh,$pwd){    	date_default_timezone_set("PRC"); //时区设置    	$classList = "";//声明课表变量    	$cookie = $this->login($xh,$pwd);    	$view = $this->getViewJs($cookie,$xh);//验证密码是否正确    	//如果密码正确        if (!empty($view)) {        	$url = "http://jw.hzau.edu.cn/xskbcx.aspx?xh={$xh}";	        $result = curl_request($url,'',$cookie);  //保存的cookies			preg_match_all('/<table id="Table1"[\w\W]*?>([\w\W]*?)<\/table>/',$result,$out);	        $table = $out[0][0]; //获取整个课表	        preg_match_all('/<td [\w\W]*?>([\w\W]*?)<\/td>/',$table,$out);	        $td = $out[1];	        $length = count($td);	    	//获得课程列表	    	for ($i=0; $i < $length; $i++) { 	    		$td[$i] = str_replace("<br>", "", $td[$i]);	    		$reg = "/{(.*)}/";	    		    		if (!preg_match_all($reg, $td[$i], $matches)) {	    			unset($td[$i]);	    		}			}			$td = array_values($td); //将课程列表数组重新索引			$tdLength = count($td);			for ($i=0; $i < $tdLength; $i++) { 				$td[$i] = iconv('GB2312','UTF-8',$td[$i]);			}			//将课表转换成数组形式			function converttoTable($table){				$list = array(					'sun' => array(						'1,2' => '',						'3,4' => '',						'5,6' => '',						'7,8' => '',						'9,10' => ''					),					'mon' => array(						'1,2' => '',						'3,4' => '',						'5,6' => '',						'7,8' => '',						'9,10' => ''					),					'tues' => array(						'1,2' => '',						'3,4' => '',						'5,6' => '',						'7,8' => '',						'9,10' => ''					),					'wed' => array(						'1,2' => '',						'3,4' => '',						'5,6' => '',						'7,8' => '',						'9,10' => ''					),					'thur' => array(						'1,2' => '',						'3,4' => '',						'5,6' => '',						'7,8' => '',						'9,10' => ''					),					'fri' => array(						'1,2' => '',						'3,4' => '',						'5,6' => '',						'7,8' => '',						'9,10' => ''					),					'sat' => array(						'1,2' => '',						'3,4' => '',						'5,6' => '',						'7,8' => '',						'9,10' => ''					)				);				$week = array("sun"=>"周日","mon"=>"周一","tues"=>"周二","wed"=>"周三","thur"=>"周四","fri"=>"周五","sat"=>"周六");				$order = array('1,2','3,4','5,6','7,8','9,10');				foreach ($table as $key => $value) {					$class = $value;					foreach ($week as $key => $weekDay) {						$pos = strpos($class,$weekDay);						// echo $pos;						if ($pos) {							$weekArrayDay = $key; //获取list数组中的第一维key 							foreach ($order as $key => $orderClass) {								$pos = strpos($class,$orderClass);								if ($pos) {									$weekArrayOrder = $orderClass; //获取该课程是第几节									break;								}							}							break;						}					}					$list[$weekArrayDay][$weekArrayOrder] = $class;				}				return $list;			}								//调用函数			return converttoTable($td);        }else{        	return 0;        }	}
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  6,再试试查询空教室的功能

    

//空教室查询结果	public function roomresult(){		$xh = ""; //设置学号		$pwd = "";  //学号对应的密码		$cookie = $this->login($xh,$pwd);        $url = "http://jw.hzau.edu.cn/xs_main.aspx?xh={$xh}";        $result = curl_request($url,'',$cookie);  //保存的cookies        $url="http://jw.hzau.edu.cn/xxjsjy.aspx?xh={$xh}";        $post['Button2'] = iconv('utf-8', 'gb2312', '空教室查询');        $post['__EVENTARGUMENT']='';        $post['__EVENTTARGET']='';        $post['__VIEWSTATE'] = $this->getViewJs($cookie,$xh);        $post['ddlDsz'] = iconv('utf-8', 'gb2312', '单');        $post['ddlSyXn'] = '2014-2015'; //学年        $post['ddlSyxq'] = '1';         $post['jslb'] = '';        $post['xiaoq'] = '';        $post['kssj']=$_GET['start'];  //提交的开始查询时间          $post['sjd']=$_GET['class'];//提交的课程节次        $post['xn']='2014-2015';//所在学年        $post['xq']='2';//所在学期        $post['xqj']='6';//当天星期几        $post['dpDataGrid1:txtPageSize']=90;//每页显示条数        $result = curl_request($url,$post,$cookie,0);				preg_match_all('/<span[^>]+>[^>]+span>/',$result,$out);        $tip = iconv('gb2312', 'utf-8', $out[0][3]);//获取页面前部的提示内容        preg_match_all('/<table[\w\W]*?>([\w\W]*?)<\/table>/',$result,$out);        $table = iconv('gb2312', 'utf-8', $out[0][0]); //获取查询列表				$this->load->view("classroom",array('tip'=>$tip,'table'=>$table));    }
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  总结起来就是这些了,每个学校的教务系统都不尽相同,这时我们可以借助火狐浏览器的 firebug 抓包,看看到底提交了哪些东西。如果不成功,要看看自己该提交的东西post 上去了没有,如果再不成功,额……可以联系我 [email protected]

  就这些了,赶快去试试吧!

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