使用Javascript服务器端编码从Classic ASP返回JSONP [英] Return JSONP from Classic ASP with Javascript server side coding

问题描述

我正在从jquery调用经典的.asp页面以返回列表(使用JSONP).我想使用JSONP，因为通过Google翻译查看我的网站时，使用相同的来源政策会导致问题.我发现的所有解决方案的问题在于，它们假定asp页使用VBscript作为服务器端语言.我正在使用JavaScript作为ASP中的服务器端语言，以连接到数据库并返回结果.

I'm calling a classic .asp page from jquery to return a list (using JSONP). I want to use JSONP because of the same origin policy that causes problems when my website is viewed through google translate. The problem with all of the solutions I have found is that they assume the asp page is using VBscript as the server side language. I am using javascript as the server side language, in asp, to connect to a db and return results.

我尝试了几种仅返回500个服务器错误的方法.这是我的jquery调用:

I have tried a few different methods that have only returned 500 server errors. Here is my jquery call:

$.ajax({
  dataType: 'jsonp',
  url: 'website/page.asp',
 success: function () {
    alert(data);
  },
});

这是我的page.asp:

And this my page.asp:

<%@ language="Javascript" %>

<script language="javascript" runat="server" src='json2.js'></script>
<script language="javascript" runat="server">

var jsonValue = eval('('hello world')');
Response.Write(jsonValue);

</script>

我要做的就是创建一个简单的hello world JSONP调用，以便我可以开始对其进行修改，以包含正在执行的查询中的数据到数据库.有人有这个的简单版本吗?这可能吗?

All I want to do is create a simple hello world JSONP call so that I can start to modify it to include data from a query I am doing to a database. Does anyone have a simple version of this? Is this possible?

推荐答案

您的示例没有任何意义.首先，它具有无效的语法("hello world"是一个字符串，但未引用).其次，您想在asp代码中编码JSON，但是使用eval是解码JSON的一种(错误的)方法.我认为您可以使用Crockford的json2.js对您的对象进行编码，如下所示:

Your example makes no sense. First, it has invalid syntax ("hello world" is a string but it is not quoted). Secondly, you want to encode JSON in your asp code, but using eval would be a (wrong) way to decode JSON. Here is what I think you could do, using Crockford's json2.js to encode your object, like this:

var sourceObj = { "testkey" : "test value", "otherkey" : 5 };
var jsonstr = JSON.stringify(sourceObj);
Response.Write("yourjsonpCallbackName (" + jsonstr + ");");

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