2.系统设置网站配置网站信息配置

程序流程：/Admin/Admin/SiteOption/SiteInfo.aspx页面初始化，调用Common类中的Cinfig.cs中对应方法，加载xml文件，修改按钮提交后，调用对应方法保存xml。主要代码如下。

 Config.cs类主体代码：

public class Config
    {
        /// <summary>
        /// 获取指定文件的指定节点值
        /// </summary>
        /// <param name="fileName">文件名</param>
        /// <param name="tarGet">节点名</param>
        /// <returns>节点值</returns>
        public static string GetConfig(string fileName, string tarGet)
        {
            XmlDocument xdoc = new XmlDocument();
            string _tmp = String.Empty;
            try
            {
                xdoc.Load(HttpContext.Current.Server.MapPath("~/App_Data/" + fileName));
                XmlElement root = xdoc.DocumentElement;
                XmlNodeList elemList = root.GetElementsByTagName(tarGet);
                _tmp = elemList[0].InnerText;
            }
            catch (System.IO.FileNotFoundException)
            {
                HttpContext.Current.Server.Transfer("~/Error.aspx?error=" + HttpContext.Current.Server.UrlEncode("配置文件" + fileName + "丢失，请检查系统！"));
            }
            catch (XmlException)
            {
                HttpContext.Current.Server.Transfer("~/Error.aspx?error=" + HttpContext.Current.Server.UrlEncode("配置文件" + fileName + "损坏，请联系管理员修复！"));
            }
            catch (Exception ex)
            {
                HttpContext.Current.Server.Transfer("~/Error.aspx?error=" + HttpContext.Current.Server.UrlEncode(ex.Message));
            }
            return _tmp;
        }

        /// <summary>
        /// 设置指定文件的指定节点值
        /// </summary>
        /// <param name="fileName">文件名</param>
        /// <param name="tarGet">节点名</param>
        /// <param name="val">节点值</param>
        public static void SetConfig(string fileName, string tarGet, string val)
        {
            XmlDocument xdoc = new XmlDocument();
            try
            {
                xdoc.Load(HttpContext.Current.Server.MapPath("~/App_Data/" + fileName));
                XmlElement root = xdoc.DocumentElement;
                XmlNodeList elemList = root.GetElementsByTagName(tarGet);
                elemList[0].InnerText = val;
            }
            catch (Exception ex)
            {
                HttpContext.Current.Server.Transfer("~/Error.aspx?error=" + HttpContext.Current.Server.UrlEncode(ex.Message));
            }
        }

        /// <summary>
        /// 加载(返回)一个指定名称的XML文件
        /// </summary>
        /// <param name="fileName">XML文件名</param>
        /// <returns>XML文件</returns>
        public static XmlDocument GetXML(string fileName)
        {
            XmlDocument xdoc = new XmlDocument();
            xdoc.Load(HttpContext.Current.Server.MapPath("~/App_Data/" + fileName));
            return xdoc;
        }

        /// <summary>
        /// 保存一个指定的XML文件到App_Data目录
        /// </summary>
        /// <param name="fileName">XML文件名</param>
        /// <param name="xdoc"></param>
        public static void SaveXML(XmlDocument xdoc,string fileName)
        {
            try
            {
                xdoc.Save(HttpContext.Current.Server.MapPath("~/App_Data/" + fileName));
            }
            catch (Exception ex)
            {
                HttpContext.Current.Server.Transfer("~/Error.aspx?error=" + HttpContext.Current.Server.UrlEncode(ex.Message));
            }
        }
    }

/Admin/Admin/SiteOption/SiteInfo.aspx 主体代码：

public partial class SiteInfo : EasyFastCMS.Common.BasePage
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                LoadInfo();
            }
        }

        private void LoadInfo()
        {
            XmlDocument xdoc = Common.Config.GetXML("SiteInfo.xml");
            XmlElement root = xdoc.DocumentElement;
            this.Admin_Admin_SiteOption_SiteInfo_txtSiteName.Text = root.GetElementsByTagName("SiteName")[0].InnerText;
            this.Admin_Admin_SiteOption_SiteInfo_txtSiteTitle.Text = root.GetElementsByTagName("SiteTitle")[0].InnerText;
            this.Admin_Admin_SiteOption_SiteInfo_txtSiteUrl.Text = root.GetElementsByTagName("SiteUrl")[0].InnerText;
            this.Admin_Admin_SiteOption_SiteInfo_txtLogo.Text = root.GetElementsByTagName("Logo")[0].InnerText;
            this.Admin_Admin_SiteOption_SiteInfo_txtBanner.Text = root.GetElementsByTagName("Banner")[0].InnerText;
            this.Admin_Admin_SiteOption_SiteInfo_txtSiteManage.Text = root.GetElementsByTagName("SiteManage")[0].InnerText;
            this.Admin_Admin_SiteOption_SiteInfo_txtManageEmail.Text = root.GetElementsByTagName("ManageEmail")[0].InnerText;
            this.Admin_Admin_SiteOption_SiteInfo_txtCopyRight.Text = root.GetElementsByTagName("CopyRight")[0].InnerText;
            this.Admin_Admin_SiteOption_SiteInfo_txtKeyWrods.Text = root.GetElementsByTagName("KeyWords")[0].InnerText;
            this.Admin_Admin_SiteOption_SiteInfo_txtDescription.Text = root.GetElementsByTagName("Description")[0].InnerText;
        }

        protected void Admin_Admin_SiteOption_SiteInfo_btnSubmit_Click(object sender, EventArgs e)
        {
            XmlDocument xdoc = Common.Config.GetXML("SiteInfo.xml");
            XmlElement root = xdoc.DocumentElement;
            root.GetElementsByTagName("SiteName")[0].InnerText = this.Admin_Admin_SiteOption_SiteInfo_txtSiteName.Text;
            root.GetElementsByTagName("SiteTitle")[0].InnerText = this.Admin_Admin_SiteOption_SiteInfo_txtSiteTitle.Text;
            root.GetElementsByTagName("SiteUrl")[0].InnerText = this.Admin_Admin_SiteOption_SiteInfo_txtSiteUrl.Text;
            root.GetElementsByTagName("Logo")[0].InnerText = this.Admin_Admin_SiteOption_SiteInfo_txtLogo.Text;
            root.GetElementsByTagName("Banner")[0].InnerText = this.Admin_Admin_SiteOption_SiteInfo_txtBanner.Text;
            root.GetElementsByTagName("SiteManage")[0].InnerText = this.Admin_Admin_SiteOption_SiteInfo_txtSiteManage.Text;
            root.GetElementsByTagName("ManageEmail")[0].InnerText = this.Admin_Admin_SiteOption_SiteInfo_txtManageEmail.Text;
            root.GetElementsByTagName("CopyRight")[0].InnerText = this.Admin_Admin_SiteOption_SiteInfo_txtCopyRight.Text;
            root.GetElementsByTagName("KeyWords")[0].InnerText = this.Admin_Admin_SiteOption_SiteInfo_txtKeyWrods.Text;
            root.GetElementsByTagName("Description")[0].InnerText = this.Admin_Admin_SiteOption_SiteInfo_txtDescription.Text;
            Common.Config.SaveXML(xdoc, "SiteInfo.xml");
            ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "", "<script language=\"javascript\">alert(\"修改成功！\");</script>", false);
        }
    }

关键点分析：

　　public partial class SiteInfo : EasyFastCMS.Common.BasePage 页面继承的基类由默认的System.Web.UI.Page变成自定义的EasyFastCMS.Common.BasePage 在B/S结构的编程中，在每一个页面我们都要去进行一些初始化的检查工作，例如检测Seesion是否过期，检测是否有对应的权限等。但是，如果再每个页面的Load方法中都去检测，那么将造成大量的冗余代码。给程序的维护和开发带来很大负担。所以在B/S结构中，一般需要编写一个默认的基类。再该基类中进行这些判断。BasePage.cs的主要代码如下：

/// <summary>
    /// 页面基类
    /// </summary>
    public class BasePage : System.Web.UI.Page
    {
        protected override void OnInit(EventArgs e)
        {
            base.OnInit(e);
            this.Load += new System.EventHandler(this.Page_Load);

        }

        protected override void OnLoad(EventArgs e)
        {
            //if (Session.Count < 4)
            //{
            //    Response.Redirect("~/Error.aspx?msg=" + HttpUtility.UrlEncode("登录过期，请重新登录！"));
            //}
            base.OnLoad(e);
        }

        #region 权限检查
        /// <summary>
        /// 页面访问权限ID。
        /// </summary>
        public virtual int PermissionID
        {
            get { return -1; }
        }

        //public AccountsPrincipal CurrentPrincipal
        //{
        //    get
        //    {
        //        if (Context.User.Identity.IsAuthenticated)
        //        {
        //            AccountsPrincipal user = new AccountsPrincipal(Context.User.Identity.Name);
        //            return user;
        //        }
        //        return null;
        //    }
        //}

        #endregion

        #region 页面事件
        private void Page_Load(object sender, System.EventArgs e)
        {

            //string loginPage = ConfigurationManager.AppSettings.Get("LoginPage");//登录页地址
            //if (Context.User.Identity.IsAuthenticated)
            //{
            //    //AccountsPrincipal user = new AccountsPrincipal(Context.User.Identity.Name);
            //    if(Session["UserName"].ToString()!="Administrator")
            //    {
            //        if ((PermissionID != -1) && (!user.HasPermissionID(PermissionID)))
            //        {
            //            Response.Clear();
            //            Response.Write("<script defer>window.alert('您没有权限进入本页！');history.back();</script>");
            //            Response.End();
            //        }
            //    }

            //}
            //else
            //{
            //    FormsAuthentication.SignOut();
            //    Session.Clear();
            //    Session.Abandon();
            //    Response.Redirect("~/Error.aspx?msg=" + HttpUtility.UrlEncode("登录过期，请重新登录！")");
            //}
        }
        #endregion
    }

下节我们编写系统设置-网站配置-网站参数配置。

本节代码下载地址：http://bbs.easyfast.cn/Code/thread-4-1-1.aspx

求助：博客园是否可以上传附件？自己维护一个论坛挺累的，呵呵。