我想使用Symfony2的DOMCrawler从页面中提取数据。这是我想要从中获取数据的页面:http://kovv.mavari.be/kalender.aspx
但是我想在帖子后点击'zoek'(下拉列表中没有参数),这就是我想要的页面!现在我有:$html = file_get_contents("http://kovv.mavari.be/kalender.aspx");
但显然它会在没有帖子的情况下加载第一页。有没有办法我可以用帖子加载页面?或者我是否需要先将页面保存到本地驱动器?
更新
这是我现在的代码:
$post = http_build_query(array(
'ctl00$ContentPlaceHolder1$ddlGeslacht' => 'Heren',
'ctl00$ContentPlaceHolder1$ddlReeks' => '',
'ctl00_ContentPlaceHolder1_ddlDatum' => ''
));
$options= array('http' => array(
'method' => 'POST',
'header' => 'Content-type: application/x-www-form-urlencoded',
'content' => $post
));
$context = stream_context_create($options);
$html = file_get_contents('http://kovv.mavari.be/kalender.aspx', false, $context);
但是html仍然没有改变,它仍然是没有帖子的第一页..
更新2:这就是我现在所拥有的:
$url = "http://kovv.mavari.be/kalender.aspx";
$regs=array();
$cookies = '../src/VolleyScout/VolleyScoutBundle/Resources/doc/cookie.txt';
// regular expressions to parse out the special ASP.NET
// values for __VIEWSTATE and __EVENTVALIDATION
$regexViewstate = '/__VIEWSTATE\" value=\"(.*)\"/i';
$regexEventVal = '/__EVENTVALIDATION\" value=\"(.*)\"/i';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
$data=curl_exec($ch);
$viewstate = $this->regexExtract($data,$regexViewstate,$regs,1);
$eventval = $this->regexExtract($data, $regexEventVal,$regs,1);
$postData = '__VIEWSTATE='.rawurlencode($viewstate)
.'&__EVENTVALIDATION='.rawurlencode($eventval)
.'&ctl00_ContentPlaceHolder1_ddlGeslacht=Heren'
.'&ctl00$ContentPlaceHolder1$ddlReeks'
.'&ctl00_ContentPlaceHolder1_ddlDatum'
.'&ctl00$ContentPlaceHolder1$btnZoek:zoek'
;
curl_setOpt($ch, CURLOPT_POST, TRUE);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookies);
curl_setOpt($ch, CURLOPT_POST, FALSE);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookies);
$data = curl_exec($ch);
echo $data;
curl_close($ch);
但是我仍然没有帖子得到这个页面,我错过了什么?
答案 0 :(得分:2)
您必须使用file_get_contents的上下文参数并传递stream context object来发送帖子请求。
$post = http_build_query(array(
'ctl00$ContentPlaceHolder1$ddlGeslacht' => '...',
'ctl00$ContentPlaceHolder1$ddlReeks' => '...',
// ...
));
$options= array('http' => array(
'method' => 'POST',
'header' => 'Content-type: application/x-www-form-urlencoded',
'content' => $post
));
$context = stream_context_create($options);
file_get_contents('http://kovv.mavari.be/kalender.aspx', false, $context);