errorThrown) {
                    alert(errorThrown);
                }
            });
        });
        //数据库变更获取表名称补全提示
        $("#db_name").change(function () {
            //将数据通过ajax提交给获取db_name
            $.ajax({
                type: "get",
                url: "/instance/instance_resource/",
                dataType: "json",
                data: {
                    instance_name: $("#instance_name").val(),
                    db_name: $("#db_