getJSON和无效标签 [英] getJSON and invalid label

问题描述

我正在尝试从URL获取json数据.网址在FF中正常运行.我正在尝试这样的代码

$.getJSON("http://testsite.com/1234/?callback=?", function(data){   
        //here i am getting invalid label error**
    }
);

当我尝试不使用callback =时?我正在获取空数据

$.getJSON("http://testsite.com/1234/", function(data){   
            //here i am data = ""
        }
    );

出了什么问题?

解决方案

您似乎从中获取的网站不支持JSONP，并且使用以下URL:

http://testsite.com/1234/?callback=?

正在尝试使用 JSONP ，但是服务器返回简单的JSON响应(未包装在函数中).

使用此URL:

http://testsite.com/1234/

它根本没有尝试JSONP，并且被同源政策所阻止. /p>

---

要从远程域中获取数据，它需要支持JSONP，以便可以通过GET请求进行抓取，因此您需要为该域添加支持，或者通过自己的请求代理该请求.

I am trying to get json data from a url. Url is working ok in FF. I am trying code like this

$.getJSON("http://testsite.com/1234/?callback=?", function(data){   
        //here i am getting invalid label error**
    }
);

When i am trying without callback=? i am getting empty data

$.getJSON("http://testsite.com/1234/", function(data){   
            //here i am data = ""
        }
    );

Whats going wrong?

解决方案

It looks like the site you're fetching from doesn't support JSONP, with this URL:

http://testsite.com/1234/?callback=?

It's trying to use JSONP, but the server is returning a plain JSON response (not wrapped in a function).

With this URL:

http://testsite.com/1234/

It's not trying JSONP at all, and being blocked by the same-origin policy.

---

To fetch data from a remote domain, it needs to support JSONP so it can be grabbed with a GET request, so you'll need to either add support to that domain, or proxy the request through your own.

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