��获取db_name
            $.ajax({
                type: "get",
                url: "/instance/instance_resource/",
                dataType: "json",
                data: {
                    instance_name: $("#instance_name").val(),
                    db_name: $("#db_name").val(),
                    resource_type: "table"
                },
                complete: function () {
                },
                success: function (data) {
                    if (data.status === 0) {
              