php – cURL将数据发布到asp.net页面
作者:互联网
我试图使用curl从php中调用asp.net页面中的__doPostback javascript函数.
我了解到这可以通过使用适当的参数向asp.net页面发布请求来完成.
所以在卷曲中,
>我发出get请求/只需使用file_get_contents来检索初始页面.
>从中,我提取__VIEWSTATE和__EVENTVALIDATION的值.
一切似乎都好.
现在,我知道我们需要使用带有__VIEWSTATE的cURL和其他所需参数来发布请求. (asp.net表单中的字段值)
我无法正确构造CURLOPT_POSTFIELDS.
例如,我正在尝试这个,
$postoptions1='__EVENTTARGET='.('ctl00$ContentPlaceHolder1$gRef').'&__EVENTARGUMENT='.('$2');
$postoptions2 = '&__VIEWSTATE='.urlencode($viewState) ;
$otherparams = '&ctl00$ContentPlaceHolder1$ddlName=Abc';
在使用setopt进行CURLOPT_POSTFIELDS之前,我正在做,
urlencode ($postoptions1.$postoptions2.$otherparams)
这不起作用.未显示提交结果,这意味着在我的帖子请求中找不到所需的参数__VIEWSTATE.
如果我更改参数的顺序并将__VIEWSTATE作为第一个参数,则会显示结果页面,但不会遵循其他参数值.
我认为我对参数进行编码的方式存在一些问题.
请告诉我如何构建对asp.net页面的post请求的参数.
谢谢.
–Edited–
这是完整的代码:
$resultsPerPage = ’10’ ;
$url =“www.example.com”; //网址已更改
$curl_connection = curl_init($url);
function sendCurl($curl_connection,$url,$params,$isPost = false){
//$post_string = $params;
$post_string = http_build_query($params);
//$post_string = build_query_string($params);
//$post_string = urlencode($params);
echo 'After Encode'.$post_string;
$cookie="/cookie.txt";
//set options
curl_setopt($curl_connection, CURLOPT_CONNECTTIMEOUT, 300);
curl_setopt($curl_connection, CURLOPT_USERAGENT,
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)");
curl_setopt($curl_connection, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl_connection, CURLOPT_HEADER, 0); // don't return headers
curl_setopt($curl_connection, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($curl_connection, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($curl_connection,CURLOPT_REFERER, $url);
if($isPost) {
curl_setopt ($curl_connection, CURLOPT_POST, true);
//set data to be posted
curl_setopt($curl_connection, CURLOPT_POSTFIELDS, $post_string);
curl_setopt($curl_connection,CURLOPT_COOKIEJAR,$cookie);
}
else {
curl_setopt($curl_connection,CURLOPT_COOKIEFILE,$cookie);
}
$response1 = curl_exec($curl_connection);
if($response1 === false)
{
echo 'Curl error: ' . curl_error($curl_connection);
}
else
{
echo 'Operation completed without any errors';
}
return $response1;
} **// First time, get request to asp.net page
$response1 = sendCurl($curl_connection,$url,”,false);
$VIEWSTATE = getVStateContent($响应1);
$eventValidation = getEventValidationContent($response1);
$simpleParams =’& __ VIEWSTATE =’.$viewState.’& ctl00 $ContentPlaceHolder1 $ddlManuf =& ctl00 $ContentPlaceHolder1 $ddlCrossType =& ctl00 $ContentPlaceHolder1 $ddlPageSize =’.$resultsPerPage.’& ctl00 $ContentPlaceHolder1 $btnSearch =搜索&安培; ctl00_ToolkitScriptManager1_HiddenField =安培; __ EVENTTARGET =安培; __ EVENTARGUMENT =’;
//第二篇文章 – 用于提交搜索表单
$response2 = sendCurl($curl_connection,$url,$simpleParams,true);
—- **
解决方法:
你想要的是http_build_query,它将数组格式化为正确的HTTP参数.
编辑:澄清这应该是什么样子:
$params = array(
'__EVENTTARGET' => 'ctl00$ContentPlaceHolder1$gRef',
'__EVENTARGUMENT' => '$2',
'__VIEWSTATE' => $viewState,
'ctl00$ContentPlaceHolder1$ddlName' => 'Abc'
);
curl_setopt($curlHandler, CURLOPT_POSTFIELDS, http_build_query($params));
另外,什么是ctl00 $ContentPlaceHolder1 $ddlName应该是什么?
标签:php,asp-net,curl,viewstate 来源: https://codeday.me/bug/20190710/1420262.html