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。
