Ajax获取前台页面值，可是后台调试显示为null

你这样截个取不到值的界面没用，去浏览器F12 network里面看下这个请求有没有把参数传过来

你可以试试用下面这种写法

$.ajax({
        type : "POST",
        url : "CloneCampaign",
        data : {
            batchId:batchId,
            Address:senderNo,
            campaignType:campaignType,
            messageType:messageType,
            pageName:'campaign'
        },
        dataType : "json",
        success : function(data) {
            if (data.result==true) {
                location.href = data.path;
            } else {
                var msg = "Clone failed, please try again.";
                alertErrorBox(msg,"");
            }
        },
        error : function(jqXHR, exception) {
            alertErrorBox("System Busy, Please try again.","");
        }
    });