从JavaScript加载来自API的JSON数据 [英] loading JSON data from an API from javascript

问题描述

我需要使用一个web api，它位于这里
http://46.253.202.174:8080/ws-api/v1/rest/zdata/codesByJurAndUsage?jur=Boston,%20MA&usg=barber

i need to consume a web api, which is located here http://46.253.202.174:8080/ws-api/v1/rest/zdata/codesByJurAndUsage?jur=Boston,%20MA&usg=barber

我没有关于如何实现或访问API代码的任何细节，我只是想尝试使用API​​，我可以看到JSON如果我在浏览器中输入网址，则返回数据，但是当我尝试使用$ .getJSON调用API时，它会给我一个访问被拒绝错误。我理解这是一个跨域问题。我还尝试了一些其他的东西，比如jsonp数据类型，没有成功。我的问题是，如果我能够在浏览器中看到结果，我不应该从脚本中获得结果，或者它不一定是真的吗？
其次，有没有其他办法，如果我迄今为止尝试的事情都不成功。

I don't have any details of how it is implemented or access to the code of the API, I'm just trying to consuming the API, I can see the JSON return data if i type the url in the browser, but when i'm trying to call the API using $.getJSON, it gave me an access denied error. I understand that its a cross domain issue. I also tried a few other things, like jsonp data type, with no success. My question is, if i am able to see the results in a browser, shouldn't i be able to get the results from the scripts, or its no necessarily true? Secondly, is there any other way, if the things i have tried so far was not successful.

谢谢

推荐答案

你是对的，你不会是由于，可以通过 $。getJSON 加载此数据同源政策限制。您需要通过JSONP加载它，或者，如果该服务不支持JSONP（它看起来不是这样），则通过代理加载它。几个选项：

You are correct, you won't be able to load this data via $.getJSON due to the Same Origin Policy restrictions. You'll need to load it via JSONP, or, if the service doesn't support JSONP (which it looks like it doesn't), via a proxy. A couple of options:

• 您可以通过PHP或其他服务器端语言在自己的服务器上设置代理。这将允许您从您自己的服务器请求数据，绕过同源限制。您可以为此目的查看简单PHP代理等项目。

您可以使用 YQL作为代理 - 它通过Yahoo!的服务器发送数据，然后你可以通过JSONP加载它。将此技术应用于jQuery是本文中讨论的。

You can use YQL as a proxy - this sends the data through Yahoo!'s servers and then you can load it via JSONP. Applying this technique with jQuery is discussed in this article.

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