Ajax getJson跨域訪問

查詢了一下jquery的文檔，再看了一下網上的資料，自己試驗了一下，已經通過，代碼如下：

client js 代碼：

<script type="text/javascript">
    function test() {
    varurl = "http://yourip/your_dir/your_action.action?id=1&jsoncallback=?";
        $.getJSON(
            url,
            function (Json) {
                alert(Json.UserID);
                alert(Json.UserName);
        });
    }
</script>

server action 代碼：

 

public void Test(){
        HttpServletResponse Response = ServletActionContext.getResponse();
        HttpServletRequest Request = ServletActionContext.getRequest();
        String jsoncallback = Request.getParameter("jsoncallback");
        String id = Request.getParameter("id");
        System.out.println(id + " @ " + jsoncallback);
        if (jsoncallback != null)
        {
            jsoncallback= (jsoncallback +"({\"UserID\":\"1234567890\",\"UserName\":\"admin\"})");
       }
        try {
            PrintWriter out = Response.getWriter();
            out.flush();
            out.println(jsoncallback);
            out.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }