javascript 如何在外部网站上提交表单并获取生成的 HTML？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/11030307/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to submit form on an external website and get generated HTML?
提问by sczdavos
I would like make a script using PHP (probably need JS) to send POST data to another webpage and get the result back.
我想使用 PHP（可能需要 JS）制作一个脚本，将 POST 数据发送到另一个网页并返回结果。
For example, Domain A will have a form with a textbox and submit button, and Domain B will have a script which will fill the textbox and press the submit button and return the generated HTML page.
例如，域 A 将有一个带有文本框和提交按钮的表单，域 B 将有一个脚本，该脚本将填充文本框并按下提交按钮并返回生成的 HTML 页面。
回答by ppsreejith
The following lines of code can be written on another php script,
下面几行代码可以写在另一个php脚本上，
//set POST variables
$url = 'the website from which you need data through post';
$fields = array(
//post parameters to be sent to the other website
'text'=>urlencode($_POST['text']), //the post request you send to this script from your domain.
);
//url-ify the data for the POST
foreach($fields as $key=>$value) { $fields_string .= $key.'='.$value.'&'; }
rtrim($fields_string,'&');
//open connection
$ch = curl_init();
//set the url, number of POST vars, POST data
curl_setopt($ch,CURLOPT_URL,$url);
curl_setopt($ch,CURLOPT_POST,count($fields));
curl_setopt($ch,CURLOPT_POSTFIELDS,$fields_string);
//execute post
$result = curl_exec($ch);
//close connection
curl_close($ch);
Now $result will contain the text received from the other website.
现在 $result 将包含从其他网站收到的文本。
回答by Bergi
With JS: for security reasons not. Read on Same origin policy.
用 JS：出于安全原因没有。阅读同源政策。
With PHP you can do what you want, including POSTing other servers. For example use CURL.
使用 PHP，您可以为所欲为，包括使用POST其他服务器。例如使用CURL。
回答by TimoSolo
--- Original 2012 Answer ---
--- 原始 2012 答案---
Use jquery; just load the page with a $.ajax() call. If you need to, you can use "jsonp" which works around the restrictions between calling pages from different domains.
使用jQuery；只需使用 $.ajax() 调用加载页面。如果需要，您可以使用“jsonp”来解决从不同域调用页面之间的限制。
The nice thing about using javascript is that you don't need any serverside languages.
使用 javascript 的好处是您不需要任何服务器端语言。
--- 2018 edit ---
--- 2018 编辑 ---
I realise now that you can't do a POST with jsonp (as it is essentially read-only) so this will only work if the website accepts the form as a GET (ie, the parameters in the URL). Otherwise, best to use Curl or similar as suggested in other answers.
我现在意识到你不能用 jsonp 做 POST（因为它本质上是只读的）所以这只有在网站接受表单作为 GET（即 URL 中的参数）时才有效。否则，最好按照其他答案中的建议使用 Curl 或类似方法。
