快捷導(dǎo)航

.NET之后臺用戶權(quán)限管理實現(xiàn)

更新時間：2013年02月22日 16:46:24 作者：

在功能性比較強大的后臺管理網(wǎng)站處于各種角度考慮多有應(yīng)用權(quán)限管理功能。以公司內(nèi)部管理系統(tǒng)為例，管理員根據(jù)不同員工所在不同部門賦予其不同權(quán)限，或者根據(jù)上下級隸屬關(guān)系實現(xiàn)“金字塔”管理。本文內(nèi)容有不盡不實之處懇請指正。

序：在功能性比較強大的后臺管理網(wǎng)站處于各種角度考慮多有應(yīng)用權(quán)限管理功能。以公司內(nèi)部管理系統(tǒng)為例，管理員根據(jù)不同員工所在不同部門賦予其不同權(quán)限，或者根據(jù)上下級隸屬關(guān)系實現(xiàn)“金字塔”管理。本文內(nèi)容有不盡不實之處懇請指正。

正文：
如下效果圖是否令某用戶具備相應(yīng)權(quán)限用checkbox狀態(tài)區(qū)別存儲。

(一)儲存
這里的權(quán)限功能（類別）名稱和權(quán)限模塊（具體）名稱均是手動輸入數(shù)據(jù)庫，不可增刪改查。本例將某權(quán)限模塊作為最基本元素，是否具備該權(quán)限用1或0表示，進(jìn)而將當(dāng)前用戶所有權(quán)限鏈接組成二進(jìn)制字符串儲存在數(shù)據(jù)庫中。如示例代碼1.1

（二）讀取如示例代碼1.2

（三）前臺代碼如下

復(fù)制代碼代碼如下:

//利用js添加逗號和豎線，通過hidden傳值

<body>

</body>

復(fù)制代碼代碼如下:

示例代碼1.2
 /// <summary>
         /// 綁定所有模塊分類
         /// </summary>
         private void BindAllModule()
         {
             StringBuilder sb = new StringBuilder();
             sb.Append("<table class=\"AddRole\" width=\"100%\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\">");
             Bll_User_Module mbll = new Bll_User_Module();
             IList<User_Model.Model_User_Module> list = mbll.GetAllList();//得到泛型集合
              string moduleidstr = "";
              for (int i = 0; i < list.Count; i++)
              {
                  sb.Append("<tr><th style=\"width: 100px; height: 36px;\">");
                  sb.Append(list[i].ModuleName);
                  sb.Append("</th>");
                  sb.Append("<td>");
                  sb.Append("{" + list[i].ID + "}");
                  sb.Append("</td></tr>");
                  moduleidstr += list[i].ID.ToString() + ",";
              }
              sb.Append("</table>");

              if (Request.QueryString["nid"] != null)
              {
                  //修改
                  BLL_User_Role mrbll = new BLL_User_Role();

                  User_Model.Model_User_Role mrmodel = mrbll.GetModel(Convert.ToInt32(Request.QueryString["nid"]));
                  string RoleActions = mrmodel.RoleAction;
                  BindAllFunction(moduleidstr, sb, RoleActions);
              }
              else
              {
                  //新增
                  BindAllFunction(moduleidstr, sb, "");
              }
         }
         /// <summary>
         /// 綁定每個模塊中的各個功能選項
         /// </summary>
         /// <param name="moduleidstr">模塊數(shù)</param>
         /// <param name="sb">html表格</param>
         /// <param name="RoleActions">權(quán)限二進(jìn)制字符串</param>
         private void BindAllFunction(string moduleidstr, StringBuilder sb, string RoleActions)
         {
             Bll_User_Function bll = new Bll_User_Function();
             IList<User_Model.Model_User_Function> list = bll.GetAllList();//功能表泛型集合
             moduleidstr = moduleidstr.TrimEnd(',');//用逗號間隔功能模塊數(shù)
             string[] str = moduleidstr.Split(',');//移除逗號，以數(shù)組形式保存
             for (int i = 0; i < str.Length; i++)//循環(huán)數(shù)組
             {
                 StringBuilder funsb = new StringBuilder();
                 for (int j = 0; j < list.Count; j++)
                 {
                     if (list[j].ModuleNo == Convert.ToInt32(str[i]))
                     {
                         if (RoleActions == "")
                         {
                             //新增
                             funsb.Append("<input id=\"" + list[j].FuncNo.ToString() + "\" type=\"checkbox\" checked=\"checked\" value=\"" + list[j].FuncNo.ToString() + "\" />");
                             funsb.Append(list[j].FuncName + "&nbsp;&nbsp;");
                         }
                         else
                         {
                             //修改
                             if (RoleActions.Length >= list[j].FuncNo)
                             {
                                 //FuncNO代表當(dāng)前權(quán)限位于二進(jìn)制字符索引值
                                 if (RoleActions.Substring(list[j].FuncNo - 1, 1) == "1")//截取權(quán)限二進(jìn)制字符串并判斷其狀態(tài)
                                 {
                                     //選中狀態(tài)
                                     funsb.Append("<input id=\"" + list[j].FuncNo.ToString() + "\" type=\"checkbox\" checked=\"checked\" value=\"" + list[j].FuncNo.ToString() + "\" />");
                                     funsb.Append(list[j].FuncName + "&nbsp;&nbsp;");
                                 }
                                 else
                                 {
                                     //非選中狀態(tài)
                                     funsb.Append("<input id=\"" + list[j].FuncNo.ToString() + "\" type=\"checkbox\" value=\"" + list[j].FuncNo.ToString() + "\" />");
                                     funsb.Append(list[j].FuncName + "&nbsp;&nbsp;");
                                 }
                             }
                             else
                             {
                                 funsb.Append("<input id=\"" + list[j].FuncNo.ToString() + "\" type=\"checkbox\" value=\"" + list[j].FuncNo.ToString() + "\" />");
                                 funsb.Append(list[j].FuncName + "&nbsp;&nbsp;");
                             }
                         }
                     }
                 }
                 //替換功能項
                 sb.Replace("{" + str[i] + "}", funsb.ToString());
             }
             LiteralRole.Text = sb.ToString();      
         }

 // 保存（更新）事件
 protected void Submit_Click(object sender, EventArgs e)
 {
 string cbstr = Hidden1.Value;//獲取前臺hidden傳值，如 “1,true|2,true|3,false|4,true”形式

 ........

 }

復(fù)制代碼代碼如下:

示例代碼1.1 
 /// <summary>
         /// 生成角色二進(jìn)制字符串
         /// </summary>
         /// <param name="str"></param>
         /// <returns>二進(jìn)制序列</returns>
         private string GenerateRoleAction(string str)
         {
            //虛擬表構(gòu)建兩列存儲權(quán)限序列號及其狀態(tài)
             DataTable dt = new DataTable();
             DataColumn col1 = new DataColumn("funno", typeof(int));
             dt.Columns.Add(col1);
             DataColumn col2 = new DataColumn("flag");
             dt.Columns.Add(col2);

             string[] strarray = str.TrimEnd('|').Split('|');//截取任意兩個二進(jìn)制元素之間豎線
             for (int i = 0; i < strarray.Length; i++)
             {
                 DataRow dr = dt.NewRow();
                 dr[0] = strarray[i].Split(',')[0];//權(quán)限序列號
                 dr[1] = strarray[i].Split(',')[1];//權(quán)限狀態(tài)，用true和false區(qū)別記錄
                 dt.Rows.Add(dr);
             }

             dt.DefaultView.Sort = "funno asc";
             DataTable dttemp = dt.DefaultView.ToTable();
             //將狀態(tài)列轉(zhuǎn)換為二進(jìn)制字符
             string s = "";
             for (int j = 0; j < dttemp.Rows.Count; j++)
             {
                 if (dttemp.Rows[j]["flag"].ToString().ToLower() == "true")
                 {
                     s += "1";//選中狀態(tài)（true，即具備該權(quán)限）用1表示
                 }
                 else
                 {
                     s += "0";//非選中狀態(tài)（false，即不具備該權(quán)限）用0表示
                 }
             }
             return s;//返回象征權(quán)限的二進(jìn)制字符串
         }