使用JQuery从另一个网站获取HTML：可能？法律？ [英] Using JQuery to get the HTML from another website: Possible? Legal?

问题描述

我尝试从不在同一个网域的网页取得HTML程式码。 HTML文本被解析&总结了HTML代码来自该页面上的食谱（食谱名称，主要成分，步骤数量）。

然后用户可以点击链接&请访问该网域之外的网页以查看食谱。

我知道Same-Origin-Policy，但这适用于从网页获取HTML代码国外域外？我想象它与获取XML完全相同，所以这是合法&允许不是吗？

我可以从国内域外的域中获取HTML文本/代码吗？ p>

使用Javascript& JQuery，这个想法是限制服务器请求的数量，通过使用户对每个配方和设备执行请求，在客户端解析HTML。这将停止服务器端瓶颈&也意味着我不必经过服务器&

$

b $ b

解决方案

您无法使用任何AJAX库来完成这些工作。浏览器的跨网域政策不允许您这样做。

但您可以使用php（或任何其他服务器端语言）和AJAX。创建如下的php脚本：

 <？php 
 $ url = $ _ POST ['url']; 
 if（$ url！=）
 echo file_get_contents（$ url）; 
？> 
  

让我们说脚本的名字是 fetch.php 。
现在你可以从你的jQuery代码到这个 fetch.php 的AJAX调用，它会为你获取HTML代码。

I am trying to get HTML code from a webpage that is not in the same domain. The html text is parsed & summarises a recipe(recipe name, main ingredients, no. of steps) found on that page the HTML code was from.

The user can then click the link & go to that webpage outside the domain to view the recipe.

I'm aware of the Same-Origin-Policy, but does that apply to getting HTML code from a webpage outside the domestic domain? I imagine its exactly the same as getting XML, so this is legal & allowed isn't it?

Is there a way I can get the HTML text/code from a domain outside my domestic domain?

Using Javascript & JQuery, the idea is to limit the amount of server requests & storage by having the user perform requests for each recipe & parsing the HTML on the client side. This stops server side bottlenecks & also means I dont have to go through the server & delete old outdated recipe summarisations.

I'm open to Solutions/Suggestions in any programming language or API or etc.

解决方案

What you are trying to do can't be done using any AJAX library. Browsers' cross-domain policy won't allow you to do this.

But you can do this with a combination of php (or any other server-side language) and AJAX. Create a php script like this:

<?php
    $url=$_POST['url'];
    if($url!="")
        echo file_get_contents($url);
?>

Let us say the script's name is fetch.php. Now you can throw an AJAX call from your jQuery code to this fetch.php and it will fetch the HTML code for you.

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