jquery Jsonp的使用

  <script type="text/javascript">
       $(function(){
            $.ajax({
                url:"test",
                jsonpCallback: "showPrice",
                jsonp: "callback",
                dataType: "jsonp",
                data: {
                   q: "select title,abstract,url from search.news where query=\"cat\"",
                   format: "json"
                 },
                success: function(data) {
                      alert(data.name);
                },
                 error:function(){
                     alert("s");
                 }
            });

        });

    </script>

test servlet

/**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String name = request.getParameter("callback");
        request.getParameter("q");
        System.out.println(name);
        response.getWriter().write(name+"({name:\"bai\"})");
    }

在写回的时候格式最好是callback({   })这种格式 ，否则接受时出粗到error，具体原理以后慢慢参详