如何从 url 获取 json 数据

Question

我期待了好几天。我做了一个休息应用程序。我通过 url 向它发送字符串数据，并从中获取响应 json 数据。当我在浏览器上写入 url 时，我成功地看到了 json 值：

网址：

http://mydomain.com:82/datasnap/rest/TServerMethods1/ReverseString/MEHMET?jsoncallback=？

返回 json ： {"result"：["TEMHEM"]}

我正在尝试像下面这样获取

$.getJSON( "http://mydomain.com:82/datasnap/rest/TServerMethods1/ReverseString/MEHMET?jsoncallback=?", function( data) {
       var dt= JSON.stringify(data);
       console.log(dt[0].result);
 });

but it give an error :

Uncaught SyntaxError: Unexpected token :

:82/datasnap/rest/TServerMethods1/ReverseString/MEHMET?jsoncallback=jQuery17109582267256919295_1392369668825&_=1392369670613:1

How can I solve this?

Answer 1

Some hints from my side:

You can double check your service with Firefox RestClient Plugin which supports also JSON.

Have a look at the http header for mime type also.

I have tested your code with the service url: http://ip.jsontest.com/ and the request was made without problem.

Another problem can be the console.log command:

Try to change this to something like

    console.log(data.result[0]);

或

    alert(data.result[0]);

为了调试东西，我使用Firebug（也是一个Firefox插件）。

祝你好运。

马丁