跨域发布带有json数据的请求

Question

我已经看了两天教程了，我真的不明白我的选择是什么。我有一台带HMI的机器，运行网络服务器（我不知道那是什么类型的网络服务器）。我可以通过json数据访问POST请求中的HMI标签值。rquest的例子看起来像这个

$( document ).ready(function() {      
    var data0 = {"getTags":["Start_dav","CutON","run_rot_actual"],"includeTagMetadata":true};     
    var json = JSON.stringify(data0 );
           $.ajax({
                url: "http://ipaddress/tagbatch",
                type: "POST",
                dataType: "json",
                data: json,

响应是json数据。

当然，问题出在跨领域政策上。我无法控制机器，也无法设置CORS。我读过关于proxy、iframe和yql解决方案的文章，但据我所知，我无法使用这些解决方案发送json数据。有没有办法用json跨域发送post请求？

感谢您对的帮助

Answer 1

我找到了一个解决方案。我正在使用php-ccurl发送请求。

这是工作代码：

$data = array("getTags" => array("Var1","Var2"), "includeTagMetadata" => false);                                                                    
$data_string = json_encode($data);
$agent= 'Mozilla/5.0 (Windows; U;Windows NT 5.1; ru; rv:1.8.0.9) Gecko/20061206 Firefox/1.5.0.9';
//open connection
$ch = curl_init();
$f = fopen('request.txt', 'w'); //writes headers to this file
//set the url, number of POST vars, POST data
curl_setopt($ch,CURLOPT_URL,"domainipaddress");
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST"); 
curl_setopt($ch,CURLOPT_POSTFIELDS,$data_string);
$tmpfname = dirname(__FILE__).'/cookie.txt'; //saves the cookie from server
curl_setopt($ch, CURLOPT_COOKIEJAR, $tmpfname);
curl_setopt($ch, CURLOPT_COOKIEFILE, $tmpfname);
curl_setopt($ch, CURLOPT_ENCODING, '');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER , false);
curl_setopt($ch, CURLOPT_USERAGENT, $agent);
curl_setopt( $ch, CURLOPT_AUTOREFERER, true );
curl_setopt( $ch,  CURLOPT_VERBOSE,  1 ); 
curl_setopt( $ch,  CURLOPT_STDERR,  $f );
curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, true );
curl_setopt($ch, CURLOPT_FORBID_REUSE, false);                                                                    
curl_setopt($ch, CURLOPT_HTTPHEADER, array(                                                                        
    'Content-Type: application/json',                                                                                
    'Content-Length: ' . strlen($data_string),
       'Connection: keep-alive',
       "Keep-Alive: 300"
    )                                                                       
);  
//execute post
$result = curl_exec($ch);
$headers = curl_getinfo($ch);
fclose($f);