jsTree简单使用说明（适用于做权限）

   <div id="using_json"></div>
<input type="button" value="保存权限" class="btn btn-primary" id="saveper"/>

    <script type="text/javascript">
        $(document).ready(function() {

            $('#using_json').jstree({
                "plugins": ["checkbox"],
                'checkbox': { "keep_selected_style": false, "tie_selection": true },
                'core': {
                    "multiple": true,
                    "animation": 0,
                    'data': @Html.Raw(ViewBag.aaa.ToString())
                       

                }

            });

            $("#saveper").click(function() {
                var ouList = $('#using_json').jstree('get_selected');

                $.ajax({
                    type: 'POST',
                    url: "/Role/DistributionPer",
                    dataType: 'json',
                    data: { "idlist": ouList.toString(), "roleId": @ViewBag.Id },
                    success: function(data) {
                        AjaxCallBack(data);
                    }
                });

            });

        });
    </script>

树形结构MODEL

    public class PerTreeView
    {
        public string text { get; set; }
        public string id { get; set; }
        public string icon { get; set; }
        public List<PerTreeView> children { get; set; }

        public State state { get; set; }
    }

权限树形结构初始化控制器

        public ActionResult DistributionPer(int id)
        {
            ViewBag.Id = id;                 
            var perIdList = APIClient.AdminService.GetNodeIdListByRoleId(id);
            var a=GetPerTreeView(Permission.Where(s => s.Level != 0).ToList(), Permission, perIdList.Value.ToList());
            var js=new JavaScriptSerializer();
            ViewBag.aaa=js.Serialize(a);
            return View();
        }

初始化JSON方法state=true时表示选中

    private List<PerTreeView> GetPerTreeView(List<Permission> permission, List<Permission> permissionAll,List<int> idlist)
        {
            var treeViewList=new List<PerTreeView>();

            foreach (var item in permission)
            {
                var treeView = new PerTreeView {text = item.Name,id = item.Id.ToString()};
                
                if (permissionAll.Count(s => s.ParentId == item.Id) <= 0)
                {
                    
                    treeView.icon = "";
                    
                        if (idlist.Contains(item.Id))
                    {
                        treeView.state = new State()
                        {
                            selected = "true"

                        };
                    }

                }
                else
                {
                                     
                    treeView.children = GetPerTreeView(permissionAll.Where(s => s.ParentId == item.Id).ToList(), permissionAll, idlist);
                }
                treeViewList.Add(treeView);
            }
            return treeViewList;
        }

更新权限控制器

        [HttpPost]

        public JsonResult DistributionPer(int roleId, string idlist)
        {
            if (string.IsNullOrWhiteSpace(idlist))
            {
                return Json(new AjaxViewModel()
                {
                    Code = AjaxCode.Error,
                    Msg = "未选择权限"
                });
            }
            
            var listId = idlist.Split(',').Select(item => item.ConvertToInt32()).ToList();
            //排除之选一个的情况         
            if (listId.Count() <= 1)
            {
                return Json(new AjaxViewModel()
                {
                    Code = AjaxCode.Error,
                    Msg = "未选择权限"
                });
            }
            var parIdList= listId.Select(item =>
            {
                var firstOrDefault = Permission.FirstOrDefault(s => s.Id == item);
                return firstOrDefault?.ParentId ?? 0;
            }).ToList();
            listId.AddRange(parIdList.Distinct());
            

            var obj=APIClient.AdminService.UpdateRule(roleId, listId.ToArray());
            if (obj.Code != 200)
            {
                return Json(new AjaxViewModel()
                {
                    Code = AjaxCode.Error,
                    Msg = "服务器内部错误"
                });
            }
            return Json(new AjaxViewModel()
            {
                Code = AjaxCode.Ok,
                Msg = "修改完成",
                ReturnUrl = "/role/index"
            });

        }