以正方教务系统为例，用php模拟登陆抓取课表、空教室，抓取课表

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;

}

}

3，教务系统登陆页面的隐藏字段

举个栗子

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)

//登陆页面的隐藏字段

function getView(){

$url = 'http://jw.hzau.edu.cn/default2.aspx';

$result = curl_request($url);

$pattern = '//is';

preg_match_all($pattern, $result, $matches);

$res[0] = $matches[1][0];

return $res[0] ;

}

//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'];

}

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('/([\w\W]*?)/',$result,$out);

$table = $out[0][0]; //获取整个课表

preg_match_all('/([\w\W]*?)/',$table,$out);

$td = $out[1];

$length = count($td);

//获得课程列表

for ($i=0; $i < $length; $i++) {

$td[$i] = str_replace("

", "", $td[$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;

}

}

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('/