function sending(){

    $.ajax({

        type : "get",//jsonp只能get

        async:true,

        url : "/webcontext/jsonptest.do",//##test1

        dataType : "jsonp",

        data:{"name":"bobo","age":"18"},

        jsonp: "callback",//服务端用于接收callback调用的function名的参数

        jsonpCallback:"jsonpCallback",//callback的function名称

        beforeSend: function () {

        },

        success : function(json){

            $("#result").text(json.respInfo);

        },

        complete: function () {

        },

        error: function (data) {

            console.info("error: " + data.responseText);

            return;

        }

    });

}

public void doPost(HttpServletRequest request, HttpServletResponse response) {

    PrintWriter pw = null;

    String jsonpCallback = request.getParameter("callback");

    String result = jsonpCallback + "(" + "{\"errorCode\":\"0000\",\"respInfo\":\"task is run...\"}" + ")";

    pw.write(result);

    pw.flush();

    pw.close();

}