Tree构建

后端构建一颗树，返回前端，如下所示。

[
    {
        "Guid": "0ada72a1-0c29-4a49-80f2-adeeae4409bd",
        "id": 1,
        "text": "苏泊尔",
        "children": [
            {
                "Guid": "27be157d-46c1-476d-abb0-3b08cf9a55a5",
                "id": 3,
                "text": "车间一一",
                "children": []
            },
            {
                "Guid": "0e107c67-5933-4cec-bd05-b1c4ffff7f9d",
                "id": 2,
                "text": "车间二",
                "children": [
                    {
                        "Guid": "d3bf0d47-98e7-4dd7-aac5-ab0aeb7a6486",
                        "id": 5,
                        "text": "A2班组",
                        "children": []
                    },
                    {
                        "Guid": "2ada1f14-186d-4726-9740-ee752363b2fc",
                        "id": 4,
                        "text": "A!班组",
                        "children": []
                    }
                ]
            }
        ]
    }
]

这里我通过递归方法将树输出。

/// <summary>
        /// 递归构建树
        /// </summary>
        /// <param name="sid">父id</param>
        /// <returns></returns>
        List<DepartmentNodeModel> Tree(int sid)
        {
            List<Departments> departmentsList = DepartmentsData.QueryDepartments(d => d.Supdeptid == sid);
            List<DepartmentNodeModel> departmentNodeTree = new List<DepartmentNodeModel>();

            foreach (Departments d in departmentsList)
            {
                DepartmentNodeModel departmentNode = new DepartmentNodeModel();
                departmentNode.Guid = d.ID;
                departmentNode.id = d.Deptid;
                departmentNode.text = d.Deptname;
                departmentNode.children = Tree(d.Deptid);
                departmentNodeTree.Add(departmentNode);
            }

            return departmentNodeTree;
        }

        /// <summary>
        /// 获取部门树
        /// </summary>
        /// <returns></returns>
        [HttpGet, Route("GetDepartmentsTree")]
        public List<DepartmentNodeModel> GetDepartmentsTree()
        {
            //LIST => TREE
            List<DepartmentNodeModel> departmentNodeTree = Tree(-1);
            return departmentNodeTree;
        }

能在项目中用到递归还是蛮兴奋的，哈哈