showmessage.cs

企业内部的短信交流管理平台。 设计详细

using System;
using System.Xml;

namespace Com.SMS.SMSUI.AjaxMake
{
	/// <summary>
	/// ShowMessage 的摘要说明。
	/// </summary>
	public class ShowMessage :System.Web.IHttpHandler,System.Web.SessionState.IRequiresSessionState
	{
		#region IHttpHandler 成员

		public void ProcessRequest(System.Web.HttpContext context)
		{
			int id=Convert.ToInt32(context.Request["msgid"]);
			int length=Convert.ToInt32(System.Configuration.ConfigurationSettings.AppSettings["cacheLen"]);
			int ulen=Convert.ToInt32(System.Configuration.ConfigurationSettings.AppSettings["userLen"]);
			Entity.User us=(Entity.User)context.Session["User"];
			if(us.UserId==0)
			{
				context.Response.Redirect("Login.aspx",false);
			}
			try
			{
				ChatContent.MessagesDataTable mdt=Core.Logic.GetCacheContent().Messages;
				while (mdt.Count > length)
				{
					mdt[0].Delete();
					mdt.AcceptChanges();
				}
				ChatContent.MessagesDataTable mdta=Core.Logic.GetCacheContent().Messages;
				ChatContent.MessagesRow[] rows= mdta.Select("msgId>"+id+" and (Reciver='所有人' or Reciver='"+us.UserName+"' or Sender='"+us.UserName+"')") as ChatContent.MessagesRow[];
//				while (rows.Length > ulen)
//				{
//					rows[0].Delete();
//				}

				XmlDocument xdoc=new XmlDocument();
				xdoc.LoadXml("<?xml version=\"1.0\" encoding=\"gb2312\" ?><msgs></msgs>");
				for(int i=0;i<rows.Length;i++)
				{
					XmlElement 	xemsg=xdoc.CreateElement("msg");

					XmlElement xmlId=xdoc.CreateElement("msgId");
					xmlId.AppendChild(xdoc.CreateTextNode(rows[i].msgId.ToString()));

					XmlElement xmlSender=xdoc.CreateElement("msgSender");
					xmlSender.AppendChild(xdoc.CreateTextNode(rows[i].Sender));

					XmlElement xmlContent=xdoc.CreateElement("msgContent");
					xmlContent.AppendChild(xdoc.CreateTextNode(rows[i].Content));

					XmlElement xmlRecive=xdoc.CreateElement("msgRecive");
					xmlRecive.AppendChild(xdoc.CreateTextNode(rows[i].Reciver));

					XmlElement xmlTime=xdoc.CreateElement("msgTime");
					xmlTime.AppendChild(xdoc.CreateTextNode(rows[i].sendTime.ToString()));

					xemsg.AppendChild(xmlId);
					xemsg.AppendChild(xmlSender);
					xemsg.AppendChild(xmlContent);
					xemsg.AppendChild(xmlRecive);
					xemsg.AppendChild(xmlTime);

					xdoc.DocumentElement.AppendChild(xemsg);
				}

				context.Response.ContentType="text/xml";
				xdoc.Save(context.Response.OutputStream);
			}
			catch(Exception ex)
			{
				Exception ee=ex;
			}
		}

		public bool IsReusable
		{
			get
			{
				// TODO:  添加 ShowMessage.IsReusable getter 实现
				return false;
			}
		}

		#endregion
	}
}