给定treeData,根据关键字进行过滤：显示父级元素；如果节点被选中，那它的子节点也全部被选中

//参数为需要进行过滤的tree和模糊查询关键字
function searchDataSet(value) {
    //获取tree数据
    var treeData = new Array();
    var newTreeData = new Array();
    $.ajax({
        url: '/core/dataset/getTree/',
        method: 'get',
        async: false,
        success: function (data) {
            treeData = data;
        }
    });

    //将数据进行过滤
    if (treeData) {
        newTreeData = getNewTreeData(treeData, value);
    }

    //给tree加载新数据
    $("#businessTree").epaitree({
        loadFilter: function (data) {
            if (value) {
                return newTreeData;
            } else {
                return data;
            }
        }

    });
}

function getNewTreeData(treeData, value) {
    if (!treeData) {
        return null;
    }
    var newTreeData = new Array();
    var node = null;
    var children = null;
    var text = "";
    for (var i = 0; i < treeData.length; i++) {//多个根节点开始遍历
        node = treeData[i];
        if (node.children) {
            children = node.children;
        }
        text = node.name;
        if (text.indexOf(value) > -1) {
            newTreeData.push(node);
            continue;
        } else {
            if (children) {
                var newNodes = getNewTreeData(node.children, value);
                if (newNodes.length > 0) {
                    node.children = newNodes;
                    newTreeData.push(node);
                }
            }
        }

    }
    return newTreeData;
}