生成树形结构的json字符串代码.
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框架是使用EF6.0.可以针对返回的值使用Newtonsoft.Json.dll(百度搜一下)来对返回的值序列化为json字符串,如果对以下值那就是使用JsonConvert.SerializeObject(functionTree),啥都不说,上实例代码
/// <summary> /// init tree /// </summary> /// <returns></returns> public List<FunctionInfoMapping> LoadTree() { List<FunctionInfoMapping> listTree = InitTree(); return listTree; //return JsonConvert.SerializeObject(list); } /// <summary> /// init tree find top menu /// </summary> /// <returns></returns> private List<FunctionInfoMapping> InitTree() { RightsContext rightContext = new RightsContext(); var treeList = (from a in db.FunctionInfoes join b in db.FunctionInfoes on a.ParentId equals b.FunctionId select new FunctionInfoMapping { ID=a.FunctionId, Title=a.FunctionName, FunctionType=a.FunctionType, ParentId=b.FunctionId, ParentName=b.FunctionName, FunctionPath=a.FunctionPath, Description=a.Description, SortId=a.SortId, }).Union (from a in db.FunctionInfoes where a.ParentId == -1 select new FunctionInfoMapping { ID = a.FunctionId, Title = a.FunctionName, FunctionType = a.FunctionType, ParentId = -1, ParentName = "", FunctionPath = a.FunctionPath, Description = a.Description, SortId = a.SortId, }); var newTree = treeList.Union(treeList); //List<FunctionInfoMapping> reeList= treeList.ToList<FunctionInfoMapping>() List < FunctionInfoMapping > rootNode = new List<FunctionInfoMapping>(); foreach (var plist in newTree.Where(t => t.ParentId == -1)) { FunctionInfoMapping node = new FunctionInfoMapping(); node.ID = plist.ID; node.Title = plist.Title; node.FunctionType = plist.FunctionType; node.ParentId = plist.ParentId; node.ParentName = plist.ParentName; node.FunctionPath = plist.FunctionPath; node.Description = plist.Description; node.SortId =plist.SortId; node.Nodes = CreateChildTree(newTree.AsQueryable<FunctionInfoMapping>(), node); rootNode.Add(node); } return rootNode; } /// <summary> /// recursive /// </summary> /// <param name="TreeList"></param> /// <param name="jt"></param> /// <returns></returns> private List<FunctionInfoMapping> CreateChildTree(IQueryable<FunctionInfoMapping> TreeList, FunctionInfoMapping parentId) { int keyid = parentId.ID;//root id List<FunctionInfoMapping> nodeList = new List<FunctionInfoMapping>(); var children = TreeList.Where(t => t.ParentId == keyid); foreach (var chl in children) { FunctionInfoMapping node = new FunctionInfoMapping(); node.ID = chl.ID; node.Title = chl.Title; node.FunctionType = chl.FunctionType; node.ParentId = chl.ParentId; node.ParentName = chl.ParentName; node.FunctionPath = chl.FunctionPath; node.Description = chl.Description; node.SortId = chl.SortId; node.Nodes = CreateChildTree(TreeList, node); nodeList.Add(node); } return nodeList; }
返回的结构如下
[
{
"id": 2,
"title": "Fundamental",
"functiontype": 1,
"parentId": -1,
"parentname": "",
"functionpath": "/html/Fundamental",
"description": "fundamental menu link",
"sortid": 0,
"nodes": []
},
{
"id": 3,
"title": "Auth Manager",
"functiontype": 1,
"parentId": -1,
"parentname": "",
"functionpath": "/Html/Auth",
"description": " auth manager link ",
"sortid": 0,
"nodes": [
{
"id": 4,
"title": "Role Manager",
"functiontype": 2,
"parentId": 3,
"parentname": "Auth Manager",
"functionpath": "/Html/Auth/roles.html",
"description": " roles manager page ",
"sortid": 0,
"nodes": [
{
"id": 10,
"title": "Add Role",
"functiontype": 3,
"parentId": 4,
"parentname": "Role Manager",
"functionpath": null,
"description": null,
"sortid": 0,
"nodes": []
},
{
"id": 12,
"title": "Delete role",
"functiontype": 3,
"parentId": 4,
"parentname": "Role Manager",
"functionpath": null,
"description": null,
"sortid": 0,
"nodes": []
}
]
},
{
"id": 5,
"title": "Page Manager",
"functiontype": 2,
"parentId": 3,
"parentname": "Auth Manager",
"functionpath": "/Html/Auth/pages.html",
"description": "pages permission manager page",
"sortid": 0,
"nodes": []
}
]
}
]
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