C# 遞歸讀取XML菜單數據

本文轉載自查看原文 2014-11-08 22:10 2256 遞歸/ Jquery/ XML讀取

在博客園注冊了有4年了，很遺憾至今仍未發表過博客，趁周末有空發表第一篇博客。小生不才，在此獻丑了！

最近在研究一些關於C#的一些技術，縱觀之前的開發項目的經驗，做系統時顯示系統菜單的功能總是喜歡把數據寫在數據庫表，然后直接讀取加載到菜單樹上顯示。

現在想把菜單數據都放在XML里，然后遞歸讀取XML。

由於項目使用WCF，實體類使用了兩個，一個是業務邏輯層中的實體，一個是調用業務邏輯層遞歸方法后進行數據實體的轉換，XML讀取方法寫在業務邏輯層中。

思路：1.先讀取XML里所有的菜單 2.根據用戶的權限顯示所屬用戶的菜單加載到頁面上

XML數據如下：

 1   <?xml version="1.0" encoding="utf-8"?>
 2   <ZCSoft.Net xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
 3    <Applications>
 4       <Application ID ="OA" Text="OA管理系統">
 5         <Modules>
 6           <Module ID="OA_System" Text="系統管理">
 7             <Menus>
 8          　　　<Menu ID="OA_System_UserManager" Text="人員管理" URL="System/UserManager/UserManagerList.aspx"> </Menu>
 9               <Menu ID="OA_System_RoleManager" Text="角色管理" URL="System/RoleManager/RoleManagerList.aspx"></Menu>
10               <Menu ID="OA_System_LoginLog" Text="登錄日志" URL="System/Log/LoginLogList.aspx"></Menu>
11           　　<Menu ID="OA_System_OperateLog" Text="操作日志" URL="System/Log/OperateLogList.aspx"></Menu>
12             </Menus>
13           </Module>
14   
15           <Module ID="OA_TargetManage" Text="目標管理">
16             <Menus>
17               <Menu ID="OA_TargetManage_TargetSetup" Text="目標設定" URL="OA/TargetManage/TargetSetupList.aspx">
18               </Menu>
19             </Menus>
20           </Module>
21         </Modules>
22       </Application>
23  </ZCSoft.Net>

View Code

菜單的業務邏輯實體類：

 1 public class MenuTreeSearchModel
 2     {
 3     //菜單ID
 4         public string ItemCode { get; set; }
 5 
 6     //菜單名稱
 7         public string ItemName { get; set; }
 8 
 9     //菜單顯示類型
10         public string ItemType { get; set; }
11 
12     //排序
13         public int ItemOrder { get; set; }
14 
15     //是否顯示
16         public bool Visible { get; set; }
17 
18     //菜單鏈接
19         public string ItemUrl { get; set; }
20 
21     //上級ID
22         public string ParentItem { get; set; }
23 
24     //系統平台ID
25         public string ApplicationCode { get; set; }
26 
27     //系統平台名稱
28         public string ApplicationName { get; set; }
29 
30     //模塊ID
31         public string ModuleCode { get; set; }
32 
33     //模塊名稱
34         public string ModuleName { get; set; }
35     }

View Code

遞歸方法，讀取每個模塊和模塊下的菜單：

 1 protected void GetChildMenuList(XElement root, List<MenuTreeSearchModel> menuTreeList)
 2         {
 3             var firstNode = root.FirstNode as XElement;//讀取root節點內的第一個節點
 4             if (null != firstNode)
 5             {
 6         //讀取root節點下面同級的所有節點
 7                 var appList =
 8                         from ele in root.Element(firstNode.Name.LocalName).Elements()
 9                         select ele;
10 
11                 bool thisVisible = true;//默認節點是可見的
12                 XAttribute thisAttr = root.Attribute("Display");
13                 if (null != thisAttr)//如果菜單的上級模塊有顯示屬性
14                 {
15                     string thisDisplay = thisAttr.Value;
16                     thisVisible = thisDisplay.ToLower() == "false" ? false : true;
17                 }
18 
19                 foreach (var application in appList)
20                 {
21                     //模塊Display屬性
22                     XAttribute modAttr = application.Attribute("Display");
23                     bool visible = true;
24                     if (null != modAttr)
25                     {
26                         string display = application.Attribute("Display").Value;
27                         visible = display.ToLower() == "false" ? false : true;
28                     }
29                     var nextNode = application.FirstNode as XElement;//該節點的下級節點
30                    
31                     string itemType = "Folder";//目錄還是菜單
32                     string itemUrl = null;//鏈接地址
33                     string parentItem = null;//上一節點ID
34                     string applicationCode = null;//平台編碼
35                     string applicationName = null;//平台名稱
36                     string moduleCode = null;//模塊編碼
37                     string moduleName = null;//模塊名稱
38 
39                     if (application.Name.LocalName == "Application")
40                     {
41                         applicationCode = application.Attribute("ID").Value;
42                         applicationName = application.Attribute("Text").Value;
43                     }
44 
45                     if (application.Name.LocalName == "Module")
46                     {
47                         moduleCode = application.Attribute("ID").Value;
48                         moduleName = application.Attribute("Text").Value;
49                         applicationCode = root.Attribute("ID").Value;
50                         applicationName = root.Attribute("Text").Value;
51 
52                         if (thisVisible) //如果該模塊的所屬平台中的Display屬性設置為可見true（注意：沒有設置則默認為可見），則模塊的上級為Application的ID
53                         {
54                             parentItem = root.Attribute("ID").Value;
55                         }
56                     }
57 
58                     if (application.Name.LocalName == "Menu")
59                     {
60                         itemType = "Menu";
61                         itemUrl = application.Attribute("URL").Value;
62                         moduleCode = root.Attribute("ID").Value;
63                         moduleName = root.Attribute("Text").Value;
64                         applicationCode = root.Parent.Parent.Attribute("ID").Value;
65                         applicationName = root.Parent.Parent.Attribute("Text").Value;
66 
67                         if (thisVisible) //如果該菜單的所屬模塊中的Display屬性設置為可見true（注意：沒有設置則默認為可見），則菜單的上級為Module的ID
68                         {
69                             parentItem = root.Attribute("ID").Value;
70                         }
71                         else//如果該菜單的所屬模塊中的Display屬性設置為不可見false，則菜單的上級為Application的ID
72                         {
73                             parentItem = root.Parent.Parent.Attribute("ID").Value;
74                         }
75                     }
76 
77                     MenuTreeSearchModel model = new MenuTreeSearchModel();
78                     model.ItemCode = application.Attribute("ID").Value;
79                     model.ItemName = application.Attribute("Text").Value;
80                     model.ItemType = itemType;
81                     model.ItemOrder = 0;
82                     model.Visible = visible;
83                     model.ItemUrl = itemUrl;
84                     model.ParentItem = parentItem;
85                     model.ApplicationCode = applicationCode;
86                     model.ApplicationName = applicationName;
87                     model.ModuleCode = moduleCode;
88                     model.ModuleName = moduleName;
89                     menuTreeList.Add(model);
90 
91                     if (null != nextNode)//如果還有下級節點
92                     {
93              　　　　　　　　//調用遞歸
94                          GetChildMenuList(application, menuTreeList);
95                     }
96                 }
97             }
98         }

View Code

從XML文檔讀取：

 1 /// <summary>
 2         /// 從XML文件讀取菜單節點
 3         /// </summary>
 4         /// <returns></returns>
 5         public List<MenuTreeSearchModel> GetMenuTreeByReadXML()
 6         {
 7             List<MenuTreeSearchModel> list = new List<MenuTreeSearchModel>();
 8         //讀取XML文檔路徑，這里我把XML放在網站的bin目錄里
 9             string xmlPath = AppDomain.CurrentDomain.BaseDirectory + "Foundation.xml";
10             XElement root = XElement.Load(xmlPath);
11             var appList =
12                         from ele in root.Element("Applications").Elements()
13                         select ele;
14         //按系統平台篩選
15             foreach (var application in appList)
16             {
17                 MenuTreeSearchModel model = new MenuTreeSearchModel();
18                 model.ItemCode = application.Attribute("ID").Value;
19                 model.ItemName = application.Attribute("Text").Value;
20                 model.ItemType = "Folder";
21                 model.ItemOrder = 0;
22                 model.Visible = true;
23                 model.ItemUrl = null;
24                 model.ParentItem = null;
25                 model.ApplicationCode = application.Attribute("ID").Value;
26                 model.ApplicationName = application.Attribute("Text").Value;
27                 model.ModuleCode = null;
28                 model.ModuleName = null;
29                 list.Add(model);
30 
31         //遞歸調用
32                 GetChildMenuList(application, list);
33                 
34             }
35 
36             return list;
37         }

View Code

以下是在調用服務契約方法時進行的實體類：

 1 public class PublicUserMenuTreeData
 2     {  
 3 //菜單ID
 4         public string ItemCode { get; set; }
 5 
 6     //菜單名稱
 7         public string ItemName { get; set; }
 8 
 9     //菜單顯示類型
10         public string ItemType { get; set; }
11 
12     //排序
13         public int ItemOrder { get; set; }
14 
15     //是否顯示
16         public bool Visible { get; set; }
17 
18     //菜單鏈接
19         public string ItemUrl { get; set; }
20 
21     //上級ID
22         public string ParentItem { get; set; }
23 
24     //系統平台ID
25         public string ApplicationCode { get; set; }
26 
27     //系統平台名稱
28         public string ApplicationName { get; set; }
29 
30     //模塊ID
31         public string ModuleCode { get; set; }
32 
33     //模塊名稱
34         public string ModuleName { get; set; }
35     //當前菜單下的菜單集合
36     public List<PublicUserMenuTreeData> UserMenuTreeDatas { set; get; }
37     }

View Code

實體轉換方法：

 1 public PublicUserMenuTreeData TransferUserMenuTreeToPublicUserMenu(MenuTreeData userMenuTreeData)
 2         {
 3             PublicUserMenuTreeData pubUserMenuTreeData = new PublicUserMenuTreeData();
 4             pubUserMenuTreeData.ItemCode = userMenuTreeData.ItemCode;
 5             pubUserMenuTreeData.ItemName = userMenuTreeData.ItemName;
 6             pubUserMenuTreeData.ItemType = userMenuTreeData.ItemType;
 7             pubUserMenuTreeData.ItemOrder = userMenuTreeData.ItemOrder;
 8             pubUserMenuTreeData.Visible = userMenuTreeData.Visible;
 9             pubUserMenuTreeData.ItemUrl = userMenuTreeData.ItemUrl;
10             pubUserMenuTreeData.ParentItem = userMenuTreeData.ParentItem;
11             pubUserMenuTreeData.ApplicationCode = userMenuTreeData.ApplicationCode;
12             pubUserMenuTreeData.ApplicationName = userMenuTreeData.ApplicationName;
13             pubUserMenuTreeData.ModuleCode = userMenuTreeData.ModuleCode;
14             pubUserMenuTreeData.ModuleName = userMenuTreeData.ModuleName;
15             return pubUserMenuTreeData;
16         }

View Code

用戶權限菜單方法：

 1 /// <summary>
 2         /// 有用戶權限樹獲取共用的用戶菜單列表
 3         /// </summary>
 4         /// <param name="listAllUserMenu"></param>
 5         /// <returns></returns>
 6         public List<PublicUserMenuTreeData> GetPublicUserMenuFromUserMenuTreeData(List<MenuTreeData> listAllUserMenu)
 7         {
 8             List<PublicUserMenuTreeData> listPublicUserMenuTreeData = new List<PublicUserMenuTreeData>();
 9             List<MenuTreeData> list = listAllUserMenu.FindAll(d => string.IsNullOrEmpty(d.ParentItem)).ToList();
10             foreach (var userMenuTreeData in list)
11             {
12                 PublicUserMenuTreeData pubUserMenuTreeData = TransferUserMenuTreeToPublicUserMenu(userMenuTreeData);
13                 pubUserMenuTreeData.UserMenuTreeDatas = GetChildData(pubUserMenuTreeData.ItemCode, listAllUserMenu);
14                 listPublicUserMenuTreeData.Add(pubUserMenuTreeData);
15             }
16             return listPublicUserMenuTreeData;
17         }
18         public List<PublicUserMenuTreeData> GetChildData(string parentId, List<MenuTreeData> listUserMenuTreeData)
19         {
20 
21             List<MenuTreeData> list = listUserMenuTreeData.FindAll(d => d.ParentItem == parentId).ToList();
22             if (list.Count > 0)
23             {
24                 List<PublicUserMenuTreeData> listPublicUserMenuTreeData = new List<PublicUserMenuTreeData>();
25                 foreach (var userMenuTreeData in list)
26                 {
27                     PublicUserMenuTreeData pubUserMenuTreeData = TransferUserMenuTreeToPublicUserMenu(userMenuTreeData);
28                     pubUserMenuTreeData.UserMenuTreeDatas = GetChildData(pubUserMenuTreeData.ItemCode, listUserMenuTreeData);
29                     listPublicUserMenuTreeData.Add(pubUserMenuTreeData);
30                 }
31                 return listPublicUserMenuTreeData;
32             }
33             return null;
34         }

View Code

系統菜單類：

 1 /// <summary>
 2     /// 系統菜單
 3     /// </summary>
 4     [DataContract()]
 5     public class MenuTreeData 
 6     {
 7 
 8         [DataMember()]
 9         public string ItemCode { get; set; }
10 
11         [DataMember()]
12         public string ItemName { get; set; }
13 
14         [DataMember()]
15         public string ItemType { get; set; }
16 
17         [DataMember()]
18         public int ItemOrder { get; set; }
19 
20         [DataMember()]
21         public bool Visible { get; set; }
22 
23         [DataMember()]
24         public string ItemUrl { get; set; }
25 
26         [DataMember()]
27         public string ParentItem { get; set; }
28 
29         [DataMember()]
30         public string ApplicationCode { get; set; }
31 
32         [DataMember()]
33         public string ApplicationName { get; set; }
34 
35         [DataMember()]
36         public string ModuleCode { get; set; }
37 
38         [DataMember()]
39         public string ModuleName { get; set; }
40 
41     }

View Code

后台頁面加載Load代碼：

1 string menuData = string.Empty;
2  
3 var treeList= GetMenuTreeList();
4     if (treeList!= null)
5 {
6          List<MenuTreeData> listAllUserMenu = treeList.FindAll(d => d.Visible).OrderBy(d => d.ItemOrder).ToList();
7          List<PublicUserMenuTreeData> listPublicUserMenuTreeData = GetPublicUserMenuFromUserMenuTreeData(listAllUserMenu);
8           menuData = JsonConvert.SerializeObject(listPublicUserMenuTreeData);
9 }

View Code

頁面加載腳本，這里使用Jquery：

 1 var obj = menuData;
 2 GetMenuInfo(obj);
 3  function GetMenuInfo(obj) {
 4             var str = "";
 5            
 6             var objInfo = "";
 7             if (obj) {
 8                 objInfo = obj.split("|");
 9                 if (objInfo[0] != "") {
10                     var PublicUserMenuTreeData = JSON.parse(objInfo[0]);
11                     for (var i = 0; i < PublicUserMenuTreeData.length; i++) {
12                         str += ("<li>");
13                         var tempmenu= PublicUserMenuTreeData[i];
14                         if (tempmenu.ItemType && tempmenu.ItemType == "Menu") {
15                             str += ("<a href='#' onclick='" + tempmenu.ItemCode + "()' id='" + tempmenu.ItemCode + "'>" + tempmenu.ItemName + "</a>");
16                             str += ("<script> function " + tempmenu.ItemCode);
17                             str += ("() { tabframe1.newTab({ title: '" + tempmenu.ItemName + "',");
18                             if (tempmenu.ItemUrl.indexOf('?') != -1) {
19                                 str += ("src: '" + tempmenu.ItemUrl + "&applicationid=" + tempmenu.ApplicationCode + "&moduleid=" + tempmenu.ModuleCode + "',");
20                             } else {
21                                 str += ("src: '" + tempmenu.ItemUrl + "?applicationid=" + tempmenu.ApplicationCode + "&moduleid=" + tempmenu.ModuleCode + "',");
22                             }
23 
24                             str += ("  id: 'oa-system-" + tempmenu.ItemCode + "',");
25                             str += ("  closable: true  }); jQuery('#mainmenulist').hide();  return false; }<\/script>");
26                         } else {
27                             str += ("<a href='#' id='" + PublicUserMenuTreeData[i].ItemCode + "'>" + PublicUserMenuTreeData[i].ItemName + "</a>");
28                         }
29 
30                         if (PublicUserMenuTreeData[i].UserMenuTreeDatas) {
31                             str += GetRecurrenceData(PublicUserMenuTreeData[i].UserMenuTreeDatas);
32                         }
33 
34                         str += (" </li>");
35                     }
36 
37 
38                 }
39             }
40 
41 function GetRecurrenceData(listPublicUserMenuTreeData) {
42             var str = "";
43             if (listPublicUserMenuTreeData && listPublicUserMenuTreeData.length>0) {
44                 str += (" <ul>");
45                 for (var j = 0; j < listPublicUserMenuTreeData.length; j++) {
46                     str += ("<li class='divFontWeight'>");
47                     if (listPublicUserMenuTreeData[j].ItemType && listPublicUserMenuTreeData[j].ItemType == "Menu") {
48                         str += ("<a href='#' onclick='" + listPublicUserMenuTreeData[j].ItemCode + "()' id='" + listPublicUserMenuTreeData[j].ItemCode + "'>" + listPublicUserMenuTreeData[j].ItemName + "</a>");
49                         str += ("<script> function " + listPublicUserMenuTreeData[j].ItemCode);
50                         str += ("() { tabframe1.newTab({ title: '" + listPublicUserMenuTreeData[j].ItemName + "',");
51                         if (listPublicUserMenuTreeData[j].ItemUrl.indexOf('?') != -1) {
52                             str += ("src: '" + listPublicUserMenuTreeData[j].ItemUrl + "&applicationid=" + listPublicUserMenuTreeData[j].ApplicationCode + "&moduleid=" + listPublicUserMenuTreeData[j].ModuleCode + "',");
53                         } else {
54                             str += ("src: '" + listPublicUserMenuTreeData[j].ItemUrl + "?applicationid=" + listPublicUserMenuTreeData[j].ApplicationCode + "&moduleid=" + listPublicUserMenuTreeData[j].ModuleCode + "',");
55                         }
56 
57                         str += ("  id: 'oa-system-" + listPublicUserMenuTreeData[j].ItemCode + "',");
58                         str += ("  closable: true  }); jQuery('#mainmenulist').hide();  return false; }<\/script>");
59                     } else {
60                         str += ("<a href='#' id='" + listPublicUserMenuTreeData[j].ItemCode + "'>" + listPublicUserMenuTreeData[j].ItemName + "</a>");
61                     }
62 
63 
64                     var ListMenuDatas = listPublicUserMenuTreeData[j].UserMenuTreeDatas;
65                     str += GetRecurrenceData(ListMenuDatas);
66 
67                     str += ("</li>");
68                 }
69                 str += (" </ul>");
70             }
71             return str;
72         }

View Code

效果圖：

這里補充一下：菜單中如果在模塊Module里設置屬性Display="false"，則模塊不顯示出來，可是模塊下的菜單可顯示出來。

itemType=“Folder”顯示類型是目錄，itemType=“Menu”顯示類型是菜單

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