Java 改造ayui表格组件实现多重排序

//构造器
, Class = function (options) {
    var that = this;
    that.index = ++table.index;
    that.mutlSort = false;
    that.sortCols = []; // 组合排序列集合
    that.config = $.extend({}, that.config, table.config, options);
    that.render();
};

 //排序
th.on('click', function (e) {
    var othis = $(this)
    , options = that.config
    , elemSort = othis.find(ELEM_SORT)
    , nowType = elemSort.attr('lay-sort')
    , field = othis.data('field')
    , type;

    if (!elemSort[0] || resizing === 1) return resizing = 2;

    if (nowType === 'asc') {
        type = 'desc';
    }
        // Fix# 排序只有 desc 和 asc 两种模式
        //else if (nowType === 'desc') {
        //    type = null;
        //}
    else {
        type = 'asc';
    }

    var sorts = JSON.parse(JSON.stringify(that.sortCols));
    if (e.shiftKey) {
        // 加入组合排序
        var inArray = false;
        for (var i = 0; i < sorts.length; i++) {
            if (sorts[i].field == field) {
                sorts[i].type = type;
                inArray = true;
                break;
            }
        }
        if (!inArray)
            sorts.push({ field: field, type: type });

    } else if (e.ctrlKey) {
        // 从组合排序移除
        for (var i = 0; i < sorts.length; i++) {
            if (sorts[i].field == field) {
                sorts.splice(i, 1);
                break;
            }
        }
    }
    else {
        // 单列排序
        sorts = [{ field: field, type: type }];
    }
    // 单列排序配置
    if (!options.multiSort)
        sorts = [{ field: field, type: type }];
    that.sort(sorts, null, true);

}).find(ELEM_SORT + ' .layui-edge ').on('click', function (e) {
    var othis = $(this)
    , index = othis.index()
    , field = othis.parents('th').eq(0).data('field');
    // 阻止事件冒泡
    layui.stope(e);
    if (index === 0) {
        that.sort([{ field: field, type: 'asc' }], null, true);
    } else {
        that.sort([{ field: field, type: 'desc' }], null, true);
    }
});

//数据排序
Class.prototype.sort = function (sorts, pull, formEvent) {

    var that = this
    , res = {}
    , options = that.config
    , filter = options.elem.attr('lay-filter')
    , data = table.cache[that.key], thisData;

    // 如果欲执行的排序已在状态中，则不执行渲染
    if (sorts.length == that.sortCols.length) {
        var sorted = true;
        for (var i = 0; i < sorts.length; i++) {
            if (sorts[i].field != that.sortCols[i].field || sorts[i].type != that.sortCols[i].type) {
                sorted = false;
                break;
            }
        }

        if (sorted) return;
    }

    that.layHeader.find('th').each(function (i, item) {
        // 清除其它标题排序状态
        $(item).find(ELEM_SORT).removeAttr('lay-sort');

        var field = $(item).data('field');
        var cols = $.grep(sorts, function (obj) { return obj.field === field });
        if (cols.length > 0) {
            $(item).find(ELEM_SORT).attr('lay-sort', cols[0].type || null);
        }
    });

    delete that.sortCols;
    that.sortCols = sorts;

    //默认为前端自动排序。如果否，则需自主排序（通常为服务端处理好排序）
    if (options.autoSort && sorts) {

        var clone = JSON.parse(JSON.stringify(data || []));
        clone.sort(function (dataRow1, dataRow2) {
            for (var i = 0, l = sorts.length; i < l; i++) {
                var field = sorts[i].field;
                var sign = sorts[i].type === 'asc' ? 1 : -1;
                var value1 = dataRow1[field], value2 = dataRow2[field];
                var result = (value1 == value2 ? 0 : (value1 > value2 ? 1 : -1)) * sign;
                if (result != 0) {
                    return result;
                }
            }
            return 0;
        });
        thisData = clone;
    }

    // 输出表格数据
    if (options.autoSort || !formEvent) {
        res[options.response.dataName] = thisData || data;
        that.renderData(res, that.page, that.count, true);
    }

    if (formEvent)
        layui.event.call(that, MOD_NAME, 'sort(' + filter + ')', sorts);
};
　　同时修改源码大概 686 行：

//获得数据
Class.prototype.pullData = function (curr) {
    var that = this
    , options = that.config
    , request = options.request
    , response = options.response
    , sort = function () {
        if (typeof options.initSort === 'object') {
            //that.sort(options.initSort.field, options.initSort.type);
            that.sort(options.initSort);
        }
    };
	// 此处略...
}

// 监听列排序
var layAttribute = self._$element.attr('lay-filter');
layui.table.on('sort(' + layAttribute + ')', function (obj) {
    // 过滤条件
    var sortFilter = $.extend({}, kom.toJS(self.loadCondition || {}));
    // 过滤条件+排序字段（注意这里是传递的是数组）
    sortFilter.sorts = $.map(obj, elem => {
        return {
            fieldName: elem.field,
            order: elem.type
        };
    });

    // 再一次自定义过滤条件
    if (self.options.parseFilter)
        sortFilter = self.options.parseFilter.call(self, sortFilter);

    // 更新 table 组件配置
    self.options.where = sortFilter;
    self.table.config.where = sortFilter;
    self.table.inst.config.where = sortFilter;
    // 排序说明
    self.options.initSort = obj;
    self.table.config.initSort = obj;
    self.table.inst.config.initSort = obj;

    // 加载数据
    self.table.inst.pullData(self.table.inst.page);
});


// 后端代码
public async Task<PagedList<Log>> GetPagedList([FromUri]Paging paging, [FromUri]Log condition, [FromUri]Sort[] sorts)
{
    return await svc.GetPagedList(paging, condition, sorts);
}