如何使用cURL将POST数据传递到JSON服务器

Question

更新：我正在抓取的网站为我提供了另一种获取所需数据的方式，因此我不再有这个问题。不过，我仍然对教育方面的解决方案感兴趣。

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我想使用cURL通过POST将数据传递给JSON服务器。

我不知道如何格式化cURL的变量。

这不起作用（返回null）：

define('POSTVARS', 'json='.urlencode('{"cid":"2623","strQuery":"","strValues":"undefined","currentPage":"0","pageSize":"-1","pageSort":"-1","countryId":"2","maxResultCount":""}')); 

也没有这个

define('POSTVARS', "json=%7B'cid'%3A'2623'%2C%20'strQuery'%3A''%2C%20'strValues'%3A'undefined'%2C%20'currentPage'%3A'0'%2C%20'pageSize'%3A'-1'%2C'pageSort'%3A'-1'%2C'countryId'%3A'2'%2C'maxResultCount'%3A''%7D="); 

按Post JSON using Curl我设置的标头

curl_setopt($ch, CURLOPT_HTTPHEADERS,array('Content-Type: application/json')); 

我的脚本作品对于常规的POST变量，但不是当我尝试将数据传递给JSON服务器时，我想知道是否我的数据格式不正确，或者必须提供其他附加参数。

我尝试的完整代码（格式如下一种破，我粘贴了完整的脚本这里https://docs.google.com/document/d/1hokE6-oMtcs3MBgPUzPwJvZIWNABc3XjOO2IzbpxDF4/edit?hl=en&authkey=CKXcnv8C）：

 

function get_url($url, $javascript_loop = 0, $timeout = 5) { $cookie = tempnam ("/tmp", "CURLCOOKIE"); $ch = curl_init(POSTURL); curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20041001 Firefox/0.10.1"); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie); curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); curl_setopt($ch, CURLOPT_ENCODING, ""); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_AUTOREFERER, true); curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); # required for https urls curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout); curl_setopt($ch, CURLOPT_TIMEOUT, $timeout); curl_setopt($ch, CURLOPT_MAXREDIRS, 10);
 

$postvars=<<<HEREDOC 
{'cid':'2623', 'strQuery':"", 'strValues':'undefined', 'currentPage':'0', 'pageSize':'-1','pageSort':'-1','countryId':'2','maxResultCount':''} 
 

HEREDOC;
 

curl_setopt($ch, CURLOPT_POST  ,1); 
curl_setopt($ch, CURLOPT_POSTFIELDS ,$postvars); 
curl_setopt($ch, CURLOPT_HEADER  ,0); // DO NOT RETURN HTTP HEADERS 

$arr = array(); 
array_push($arr, 'Content-Type: application/json; charset=utf-8'); 
curl_setopt($ch, CURLOPT_HTTPHEADER, $arr); 

$content = curl_exec($ch); 
$response = curl_getinfo($ch); 
curl_close ($ch); 

if ($response['http_code'] == 301 || $response['http_code'] == 302) 
{ 
    ini_set("user_agent", "Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20041001 Firefox/0.10.1"); 

    if ($headers = get_headers($response['url'])) 
    { 
     foreach($headers as $value) 
     { 
      if (substr(strtolower($value), 0, 9) == "location:") 
       return get_url(trim(substr($value, 9, strlen($value)))); 
     } 
    } 
} 

if ( (preg_match("/>[[:space:]]+window\.location\.replace\('(.*)'\)/i", $content, $value) || preg_match("/>[[:space:]]+window\.location\=\"(.*)\"/i", $content, $value)) && 
     $javascript_loop < 5 
) 
{ 
    return get_url($value[1], $javascript_loop+1); 
} 
else 
{ 
    return array($content, $response); 
} 
 

}
 

//设置网址 $ URL = “http://us.asos.com/services/srvWebCategory.asmx/GetWebCategories”;
 

$ output = get_url（$ url）;
 

print_r（$ output）;
 

Answer 1

尝试CURLOPT_HTTPHEADER代替CURLOPT_HTTPHEADERS。我选择了another StackOverflow thread后面的错字，直到someone helped me才找到。