Jquery ajax提交表单多个参数的获取

var noticeId="${noticeId}";//用el表达式先取得 
var userIds = checkBoxValue(); //获取复选框的值 通过方法获取 
    var url = "${ctx}/stdd/notice/notice-email!sendEmail.action"; 
    alert(userIds); 
    $.messager.confirm('确认','您确定要:'+msg+' ？',function(r){ 
        if(r){ 
            $.ajax({ 
                type: "post", 
                url: url, 
                data: {"noticeId":noticeId,"userIds":userIds}, 
                beforeSend: function(XMLHttpRequest){ 
                    //ShowLoading(); 
                }, 
                success: function(data, textStatus){ 
                    var result = jQuery.parseJSON(data); 
                        if(result.isok=='T'){ 
                        $.messager.alert('结果', '操作成功'+result.msg, 'info');   
                        $("#mainForm").submit(); 
                    }else{ 
                        $.messager.alert('结果', '操作失败'+result.msg, 'info'); 
                    }                    
                }, 
                complete: function(XMLHttpRequest, textStatus){ 
                    //HideLoading(); 
                }, 
                error: function(){ 
                    //请求出错处理 
                } 
            });