Json, Jsonp

Sonp is simply a hack to allow web apps to retrieve data across domains. It could is said that it violates the same Origin Policy (SOP).

The the-it works is by using Javascript to insert a "script" element into your page. Therefore, you need a callback function. If you didn ' t

There is one, your Javascript would have no-to access the JSON object. But by using JSONP, your Javascript code can call the callback

function. So you must specify the callback name. So your function might look like this:

private static String getJSONPObject(String callback, String s) throws JSONException {    return callback + "(" + new JSONObject(s) + ")";}

JSON format:

{    "message": "Get Succeeded",    "state": "1",    "result": {"name": "Workgroup 1", "id": 1, "description": "11"}}

JSONP format:

Callback ({    "message": "Get Succeeded",    "state": "1",    "result": {"name": "Workgroup 1", "id": 1, "description": "11"}})

Jquery插件：
https://github.com/congmo/jquery-jsonp

Json, Jsonp