我正在尝试使用curl（通过PHP）抓取搜索表单。我认为一切都是正确的，或者接近正确的，但事实似乎并非如此。为了提供一点背景知识，我尝试从搜索表单中收集（或抓取）数据，用户在其中插入日期范围，然后提交搜索。结果将显示在搜索输入下方。该页面正在使用 AJAX/JavaScript 加载数据。
当我运行 PHP 脚本时，我什么也没得到。我添加了
print_r这是我的脚本。欢迎所有建议。
<?php
class Scraper {
// Class constructor method
function __construct() {
$this->useragent = 'Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3';
$handle = fopen('cookie.txt', 'w') or exit('Unable to create or open cookie.txt file.'."\n"); // Opening or creating cookie file
fclose($handle); // Closing cookie file
$this->cookie = 'cookie.txt'; // Setting a cookie file to store cookie
$this->timeout = 30; // Setting connection timeout in seconds
}
// Method to search and scrape search details
public function scrapePersons($searchString = '') {
$searchUrl = 'https://virre.prh.fi/novus/publishedEntriesSearch';
$postValues = array(
'businessId' => '',
'startDate' => '07072016',
'endDate' => '08072016',
'registrationTypeCode' => 'kltu.U',
'_todayRegistered' => 'on',
'domicileCode' => '091',
'_domicileCode' => '1',
'_eventId_search' => 'Search',
'execution' => 'e2s1',
'_defaultEventId' => '',
);
$search = $this->curlPostFields($searchUrl, $postValues);
return $search;
}
// Method to make a POST request using form fields
public function curlPostFields($postUrl, $postValues) {
$_ch = curl_init(); // Initialising cURL session
// Setting cURL options
curl_setopt($_ch, CURLOPT_SSL_VERIFYPEER, FALSE); // Prevent cURL from verifying SSL certificate
curl_setopt($_ch, CURLOPT_FAILONERROR, TRUE); // Script should fail silently on error
curl_setopt($_ch, CURLOPT_COOKIESESSION, TRUE); // Use cookies
curl_setopt($_ch, CURLOPT_FOLLOWLOCATION, TRUE); // Follow Location: headers
curl_setopt($_ch, CURLOPT_RETURNTRANSFER, TRUE); // Returning transfer as a string
curl_setopt($_ch, CURLOPT_COOKIEFILE, $this->cookie); // Setting cookiefile
curl_setopt($_ch, CURLOPT_COOKIEJAR, $this->cookie); // Setting cookiejar
curl_setopt($_ch, CURLOPT_USERAGENT, $this->useragent); // Setting useragent
curl_setopt($_ch, CURLOPT_URL, $postUrl); // Setting URL to POST to
curl_setopt($_ch, CURLOPT_CONNECTTIMEOUT, $this->timeout); // Connection timeout
curl_setopt($_ch, CURLOPT_TIMEOUT, $this->timeout); // Request timeout
curl_setopt($_ch, CURLOPT_POST, TRUE); // Setting method as POST
curl_setopt($_ch, CURLOPT_POSTFIELDS, $postValues); // Setting POST fields (array)
$results = curl_exec($_ch); // Executing cURL session
curl_close($_ch); // Closing cURL session
return $results;
}
// Class destructor method
function __destruct() {
// Empty
}
}
$testScrape = new Scraper(); // Instantiating new object
$data = json_decode($testScrape->scrapePersons()); // Scraping people records
print_r($data);
?>
首先我会检查以确保您可以这样做。
假设您是这样，问题是您收到了一个安全检查表单，如果您使用浏览器，该表单会由于 javascript onload 表单提交而自动提交，您需要复制此表单才能使其正常工作。
我得到的输出如下。
<html>
<head>
<title>Security Check</title></head>
<body onLoad="document.security_check_form.submit()">
<form name="security_check_form" action="j_security_check" method="POST">
<input type="hidden" value="prhanonymous" name="j_username"/>
<input type="hidden" value="*=AQICr82J28VvM2ljVarKvWv3LuibH7WPDyc8EVKuXdfytXrEv/o/MzMP3KfIEq+1Wda1ICP/pDLJQqniyBaRXTXnJGJCJhi2gVIoM0e+rwGEczxoah2+PsKOEnSI6A9j2MQO6/Q4i/vaXHVA7gfjjH7qvz0Fc+Pr7fPiBtJt+2YF3YghUN39cFhoK2O8mjRwTKORojRwcguq74B8Ttd0xyUlYld68t/mplsWv5npwMfT/wfv2XMidoVmB5k/p2rp3XbwlnHpJI3gJJcb5VV58M7frCB0vricZYv3xrKuco6qpMlX9wJeCqrhrMotY0+lisAvmEDIR3YpobE=" name="j_password"/>
</form>
</body>
</html>