本文實例講述了C#遞歸讀取XML菜單數據的方法。分享給大家供大家參考。具體分析如下：
最近在研究一些關于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。
由于項目使用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：
<?xml version="1.0" encoding="utf-8"?>
<ZCSoft.Net xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<Applications>
<Application ID ="OA" Text="OA管理系統">
<Modules>
<Module ID="OA_System" Text="系統管理">
<Menus>
<Menu ID="OA_System_UserManager" Text="人員管理" URL="System/UserManager/UserManagerList.aspx"> </Menu>
<Menu ID="OA_System_RoleManager" Text="角色管理" URL="System/RoleManager/RoleManagerList.aspx"></Menu>
<Menu ID="OA_System_LoginLog" Text="登錄日志" URL="System/Log/LoginLogList.aspx"></Menu>
<Menu ID="OA_System_OperateLog" Text="操作日志" URL="System/Log/OperateLogList.aspx"></Menu>
</Menus>
</Module>
<Module ID="OA_TargetManage" Text="目標管理">
<Menus>
<Menu ID="OA_TargetManage_TargetSetup" Text="目標設定" URL="OA/TargetManage/TargetSetupList.aspx">
</Menu>
</Menus>
</Module>
</Modules>
</Application>
</ZCSoft.Net>
菜單的業務邏輯實體類：
public class MenuTreeSearchModel
{
//菜單ID
public string ItemCode { get; set; }
//菜單名稱
public string ItemName { get; set; }
//菜單顯示類型
public string ItemType { get; set; }
//排序
public int ItemOrder { get; set; }
//是否顯示
public bool Visible { get; set; }
//菜單鏈接
public string ItemUrl { get; set; }
//上級ID
public string ParentItem { get; set; }
//系統平臺ID
public string ApplicationCode { get; set; }
//系統平臺名稱
public string ApplicationName { get; set; }
//模塊ID
public string ModuleCode { get; set; }
//模塊名稱
public string ModuleName { get; set; }
}
遞歸方法，讀取每個模塊和模塊下的菜單：
protected void GetChildMenuList(XElement root, List<MenuTreeSearchModel> menuTreeList)
{
var firstNode = root.FirstNode as XElement;//讀取root節點內的第一個節點
if (null != firstNode)
{
//讀取root節點下面同級的所有節點
var appList =
from ele in root.Element(firstNode.Name.LocalName).Elements()
select ele;
bool thisVisible = true;//默認節點是可見的
XAttribute thisAttr = root.Attribute("Display");
if (null != thisAttr)//如果菜單的上級模塊有顯示屬性
{
string thisDisplay = thisAttr.Value;
thisVisible = thisDisplay.ToLower() == "false" ? false : true;
}
foreach (var application in appList)
{
//模塊Display屬性
XAttribute modAttr = application.Attribute("Display");
bool visible = true;
if (null != modAttr)
{
string display = application.Attribute("Display").Value;
visible = display.ToLower() == "false" ? false : true;
}
var nextNode = application.FirstNode as XElement;//該節點的下級節點
string itemType = "Folder";//目錄還是菜單
string itemUrl = null;//鏈接地址
string parentItem = null;//上一節點ID
string applicationCode = null;//平臺編碼
string applicationName = null;//平臺名稱
string moduleCode = null;//模塊編碼
string moduleName = null;//模塊名稱
if (application.Name.LocalName == "Application")
{
applicationCode = application.Attribute("ID").Value;
applicationName = application.Attribute("Text").Value;
}
if (application.Name.LocalName == "Module")
{
moduleCode = application.Attribute("ID").Value;
moduleName = application.Attribute("Text").Value;
applicationCode = root.Attribute("ID").Value;
applicationName = root.Attribute("Text").Value;
if (thisVisible) //如果該模塊的所屬平臺中的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
{
parentItem = root.Attribute("ID").Value;
}
}
if (application.Name.LocalName == "Menu")
{
itemType = "Menu";
itemUrl = application.Attribute("URL").Value;
moduleCode = root.Attribute("ID").Value;
moduleName = root.Attribute("Text").Value;
applicationCode = root.Parent.Parent.Attribute("ID").Value;
applicationName = root.Parent.Parent.Attribute("Text").Value;
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
{
parentItem = root.Attribute("ID").Value;
}
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
{
parentItem = root.Parent.Parent.Attribute("ID").Value;
}
}
MenuTreeSearchModel model = new MenuTreeSearchModel();
model.ItemCode = application.Attribute("ID").Value;
model.ItemName = application.Attribute("Text").Value;
model.ItemType = itemType;
model.ItemOrder = 0;
model.Visible = visible;
model.ItemUrl = itemUrl;
model.ParentItem = parentItem;
model.ApplicationCode = applicationCode;
model.ApplicationName = applicationName;
model.ModuleCode = moduleCode;
model.ModuleName = moduleName;
menuTreeList.Add(model);
if (null != nextNode)//如果還有下級節點
{
//調用遞歸
GetChildMenuList(application, menuTreeList);
}
}
}
}
從XML文檔讀?。?/p>
/// <summary>
/// 從XML文件讀取菜單節點
/// </summary>
/// <returns></returns>
public List<MenuTreeSearchModel> GetMenuTreeByReadXML()
{
List<MenuTreeSearchModel> list = new List<MenuTreeSearchModel>();
//讀取XML文檔路徑，這里我把XML放在網站的bin目錄里
string xmlPath = AppDomain.CurrentDomain.BaseDirectory + "Foundation.xml";
XElement root = XElement.Load(xmlPath);
var appList =
from ele in root.Element("Applications").Elements()
select ele;
//按系統平臺篩選
foreach (var application in appList)
{
MenuTreeSearchModel model = new MenuTreeSearchModel();
model.ItemCode = application.Attribute("ID").Value;
model.ItemName = application.Attribute("Text").Value;
model.ItemType = "Folder";
model.ItemOrder = 0;
model.Visible = true;
model.ItemUrl = null;
model.ParentItem = null;
model.ApplicationCode = application.Attribute("ID").Value;
model.ApplicationName = application.Attribute("Text").Value;
model.ModuleCode = null;
model.ModuleName = null;
list.Add(model);
//遞歸調用
GetChildMenuList(application, list);
}
return list;
}
以下是在調用服務契約方法時進行的實體類：
public class PublicUserMenuTreeData
{
//菜單ID
public string ItemCode { get; set; }
//菜單名稱
public string ItemName { get; set; }
//菜單顯示類型
public string ItemType { get; set; }
//排序
public int ItemOrder { get; set; }
//是否顯示
public bool Visible { get; set; }
//菜單鏈接
public string ItemUrl { get; set; }
//上級ID
public string ParentItem { get; set; }
//系統平臺ID
public string ApplicationCode { get; set; }
//系統平臺名稱
public string ApplicationName { get; set; }
//模塊ID
public string ModuleCode { get; set; }
//模塊名稱
public string ModuleName { get; set; }
//當前菜單下的菜單集合
public List<PublicUserMenuTreeData> UserMenuTreeDatas { set; get; }
}
實體轉換方法：
public PublicUserMenuTreeData TransferUserMenuTreeToPublicUserMenu(MenuTreeData userMenuTreeData)
{
PublicUserMenuTreeData pubUserMenuTreeData = new PublicUserMenuTreeData();
pubUserMenuTreeData.ItemCode = userMenuTreeData.ItemCode;
pubUserMenuTreeData.ItemName = userMenuTreeData.ItemName;
pubUserMenuTreeData.ItemType = userMenuTreeData.ItemType;
pubUserMenuTreeData.ItemOrder = userMenuTreeData.ItemOrder;
pubUserMenuTreeData.Visible = userMenuTreeData.Visible;
pubUserMenuTreeData.ItemUrl = userMenuTreeData.ItemUrl;
pubUserMenuTreeData.ParentItem = userMenuTreeData.ParentItem;
pubUserMenuTreeData.ApplicationCode = userMenuTreeData.ApplicationCode;
pubUserMenuTreeData.ApplicationName = userMenuTreeData.ApplicationName;
pubUserMenuTreeData.ModuleCode = userMenuTreeData.ModuleCode;
pubUserMenuTreeData.ModuleName = userMenuTreeData.ModuleName;
return pubUserMenuTreeData;
}
用戶權限菜單方法：
/// <summary>
/// 有用戶權限樹獲取共用的用戶菜單列表
/// </summary>
/// <param name="listAllUserMenu"></param>
/// <returns></returns>
public List<PublicUserMenuTreeData> GetPublicUserMenuFromUserMenuTreeData(List<MenuTreeData> listAllUserMenu)
{
List<PublicUserMenuTreeData> listPublicUserMenuTreeData = new List<PublicUserMenuTreeData>();
List<MenuTreeData> list = listAllUserMenu.FindAll(d => string.IsNullOrEmpty(d.ParentItem)).ToList();
foreach (var userMenuTreeData in list)
{
PublicUserMenuTreeData pubUserMenuTreeData = TransferUserMenuTreeToPublicUserMenu(userMenuTreeData);
pubUserMenuTreeData.UserMenuTreeDatas = GetChildData(pubUserMenuTreeData.ItemCode, listAllUserMenu);
listPublicUserMenuTreeData.Add(pubUserMenuTreeData);
}
return listPublicUserMenuTreeData;
}
public List<PublicUserMenuTreeData> GetChildData(string parentId, List<MenuTreeData> listUserMenuTreeData)
{
List<MenuTreeData> list = listUserMenuTreeData.FindAll(d => d.ParentItem == parentId).ToList();
if (list.Count > 0)
{
List<PublicUserMenuTreeData> listPublicUserMenuTreeData = new List<PublicUserMenuTreeData>();
foreach (var userMenuTreeData in list)
{
PublicUserMenuTreeData pubUserMenuTreeData = TransferUserMenuTreeToPublicUserMenu(userMenuTreeData);
pubUserMenuTreeData.UserMenuTreeDatas = GetChildData(pubUserMenuTreeData.ItemCode, listUserMenuTreeData);
listPublicUserMenuTreeData.Add(pubUserMenuTreeData);
}
return listPublicUserMenuTreeData;
}
return null;
}
系統菜單類：
/// <summary>
/// 系統菜單
/// </summary>
[DataContract()]
public class MenuTreeData
{
[DataMember()]
public string ItemCode { get; set; }
[DataMember()]
public string ItemName { get; set; }
[DataMember()]
public string ItemType { get; set; }
[DataMember()]
public int ItemOrder { get; set; }
[DataMember()]
public bool Visible { get; set; }
[DataMember()]
public string ItemUrl { get; set; }
[DataMember()]
public string ParentItem { get; set; }
[DataMember()]
public string ApplicationCode { get; set; }
[DataMember()]
public string ApplicationName { get; set; }
[DataMember()]
public string ModuleCode { get; set; }
[DataMember()]
public string ModuleName { get; set; }
}
后臺頁面加載Load代碼：
string menuData = string.Empty;
var treeList= GetMenuTreeList();
if (treeList!= null)
{
List<MenuTreeData> listAllUserMenu = treeList.FindAll(d => d.Visible).OrderBy(d => d.ItemOrder).ToList();
List<PublicUserMenuTreeData> listPublicUserMenuTreeData = GetPublicUserMenuFromUserMenuTreeData(listAllUserMenu);
menuData = JsonConvert.SerializeObject(listPublicUserMenuTreeData);
}
頁面加載腳本，這里使用Jquery：
var obj = menuData;
GetMenuInfo(obj);
function GetMenuInfo(obj) {
var str = "";
var objInfo = "";
if (obj) {
objInfo = obj.split("|");
if (objInfo[0] != "") {
var PublicUserMenuTreeData = JSON.parse(objInfo[0]);
for (var i = 0; i < PublicUserMenuTreeData.length; i++) {
str += ("<li>");
var tempmenu= PublicUserMenuTreeData[i];
if (tempmenu.ItemType && tempmenu.ItemType == "Menu") {
str += ("<a href='#' onclick='" + tempmenu.ItemCode + "()' id='" + tempmenu.ItemCode + "'>" + tempmenu.ItemName + "</a>");
str += ("<script> function " + tempmenu.ItemCode);
str += ("() { tabframe1.newTab({ title: '" + tempmenu.ItemName + "',");
if (tempmenu.ItemUrl.indexOf('?') != -1) {
str += ("src: '" + tempmenu.ItemUrl + "&applicationid=" + tempmenu.ApplicationCode + "&moduleid=" + tempmenu.ModuleCode + "',");
} else {
str += ("src: '" + tempmenu.ItemUrl + "?applicationid=" + tempmenu.ApplicationCode + "&moduleid=" + tempmenu.ModuleCode + "',");
}
str += (" id: 'oa-system-" + tempmenu.ItemCode + "',");
str += (" closable: true }); jQuery('#mainmenulist').hide(); return false; }<//script>");
} else {
str += ("<a href='#' id='" + PublicUserMenuTreeData[i].ItemCode + "'>" + PublicUserMenuTreeData[i].ItemName + "</a>");
}
if (PublicUserMenuTreeData[i].UserMenuTreeDatas) {
str += GetRecurrenceData(PublicUserMenuTreeData[i].UserMenuTreeDatas);
}
str += (" </li>");
}
}
}
function GetRecurrenceData(listPublicUserMenuTreeData) {
var str = "";
if (listPublicUserMenuTreeData && listPublicUserMenuTreeData.length>0) {
str += (" <ul>");
for (var j = 0; j < listPublicUserMenuTreeData.length; j++) {
str += ("<li class='divFontWeight'>");
if (listPublicUserMenuTreeData[j].ItemType && listPublicUserMenuTreeData[j].ItemType == "Menu") {
str += ("<a href='#' onclick='" + listPublicUserMenuTreeData[j].ItemCode + "()' id='" + listPublicUserMenuTreeData[j].ItemCode + "'>" + listPublicUserMenuTreeData[j].ItemName + "</a>");
str += ("<script> function " + listPublicUserMenuTreeData[j].ItemCode);
str += ("() { tabframe1.newTab({ title: '" + listPublicUserMenuTreeData[j].ItemName + "',");
if (listPublicUserMenuTreeData[j].ItemUrl.indexOf('?') != -1) {
str += ("src: '" + listPublicUserMenuTreeData[j].ItemUrl + "&applicationid=" + listPublicUserMenuTreeData[j].ApplicationCode + "&moduleid=" + listPublicUserMenuTreeData[j].ModuleCode + "',");
} else {
str += ("src: '" + listPublicUserMenuTreeData[j].ItemUrl + "?applicationid=" + listPublicUserMenuTreeData[j].ApplicationCode + "&moduleid=" + listPublicUserMenuTreeData[j].ModuleCode + "',");
}
str += (" id: 'oa-system-" + listPublicUserMenuTreeData[j].ItemCode + "',");
str += (" closable: true }); jQuery('#mainmenulist').hide(); return false; }<//script>");
} else {
str += ("<a href='#' id='" + listPublicUserMenuTreeData[j].ItemCode + "'>" + listPublicUserMenuTreeData[j].ItemName + "</a>");
}
var ListMenuDatas = listPublicUserMenuTreeData[j].UserMenuTreeDatas;
str += GetRecurrenceData(ListMenuDatas);
str += ("</li>");
}
str += (" </ul>");
}
return str;
}
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
希望本文所述對大家的C#程序設計有所幫助。
