ztree在artdialog中加载，并默认选中及展开相应节点

var zNodes;
        $("#department").click(function () {
            var obj = $(this);
            //加载后，根据默认选中值设置文字
            var arr = [];
            var obm = obj.find("span");
            if (obm.length > 0) {
                for (var i = 0; i < obm.length; i++) {
                    arr.push(obm.eq(i).attr("data-id"));
                }
            }
            layer.load(5);
            $.ajax({
                dataType:"json",
                url:"/sysadmin/depart/GetDataForTree",
                data:{isLoadAll: false},
                complete:function(xtr,status){layer.closeAll("loading");},
                success:function(json){
                    if(json.Err==1){
                        art.dialog({title:"错误",content:json.Msg,lock:true,icon:"error"});
                    }else{
                        art.dialog({
                            title:"设置部门",
                            content:"<div><ul id=\"ztree\" class=\"ztree\"></ul></div>",
                            lock: true,
                            cancel:true,
                            ok:function(){
                                var ztree = $.fn.zTree.getZTreeObj("ztree");
                                var nodes = ztree.getCheckedNodes();
                                var sarr = [];
                                for (var i = 0; i < nodes.length; i++) {
                                    sarr.push("<span data-id=\"" + nodes[i].DepartId + "\">" + nodes[i].DepartName + "</span>");
                                }
                                obj.html(sarr.join("；"));
                            },
                            init: function () {
                                /*初始化ztree begin*/
                                this.zNodes = json.Data;
                                var setting = {
                                    view: {
                                        showIcon: false,
                                        dblClickExpand: false,
                                        selectedMulti: true//多选
                                    },
                                    check: {
                                        enable: true,
                                        nocheckInherit: true,
                                        //chkStyle: "checkbox",
                                        chkboxType: { "Y": "", "N": "" }
                                    },
                                    key: {
                                        name: "DepartName",
                                        id: "DepartId"
                                    },
                                    data: {
                                        simpleData: {
                                            enable: true,
                                            idKey: "DepartId",
                                            pIdKey: "ParentId"
                                        },
                                        key: {
                                            name: "DepartName"
                                        }
                                    },
                                    callback: {
                                        onMouseDown: function (event, treeId, treeNode) { },
                                        onClick: function (event, treeId, treeNode) { }
                                    }
                                };
                                $.fn.zTree.init($("#ztree"), setting, this.zNodes);
                                /*初始化ztree end*/
                                
                                var ztree = $.fn.zTree.getZTreeObj("ztree");
                                /*默认打开一级树 begin*/
                                var openTreeNode = ztree.getNodeByParam("DepartId", 1);
                                if (openTreeNode != undefined) {
                                    ztree.expandNode(openTreeNode,true);
                                }
                                /*默认打开一级树 end*/
                                if (arr.length > 0) {
                                    for (var i = 0; i < arr.length; i++) {
                                        for (var j = 0; j < this.zNodes.length; j++) {
                                            if (this.zNodes[j].DepartId == parseInt(arr[i])) {
                                                //设置勾选
                                                var ckedNode = ztree.getNodeByParam("DepartId", arr[i]);
                                                ztree.checkNode(ckedNode, true);
                                                //默认展开选中项的父结点
                                                ztree.expandNode(ckedNode.getParentNode(), true);
                                                break;
                                            }
                                        }
                                    }
                                }
                            }
                        });
                    }
                }
            });
        });