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asp简单的ajax留言板(采用三层模式)_ajax教程

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好久没有写过asp了,这回写个留言板还真觉得有点难度,竞然写了整整一天,哈哈.
就只有留言其它的都什么也没写,采用三层结构(不知道算不算,本来对三层的概念很糊涂)


演示www.zj55.com的留言板,希望各位大哥大姐如果发现有漏洞的话请在这里告诉我,千万不要黑我的网站,在这里小弟先谢过了.


index.asp
<%@ codepage=65001%>
<%
option explicit
%>
<% Response.Charset=”utf-8″%>
<% Session.CodePage=65001 %>
<!– #include file=”AccHelper.asp” –>
<!– #include file=”Common.asp”–>
<!– #include file=”DAL_Guest.asp” –>
<!– #include file=”MOD_Guest.asp” –>
<!– #include file=”BLL_Guest.asp” –>
<%
 Dim mybll
 Dim myList
 Set mybll = new BLL_Guest
 Select Case Request(“tCMD”)
  Case “SAVE”
   mybll.Insert()
  Case “DEL”
   mybll.Delete()
 End Select
 myList = mybll.FindByPage()
%>
<h2>客户留言</h2>
<p>
<form name=”subForm” id=”subForm”>
 <textarea id=”con” name=”con” cols=”56″ rows=”6″ wrap=”VIRTUAL”></textarea>
 <input type=”button” name=”submit” value=”提交留言” onclick=”$(guest/index.asp?tCMD=SAVE&content=+escape(this.form.con.value))” />
</form>
</p>
<%=myList%>


BLL_Guest.asp
<%
 /// <summary>
 /// 摘要说明。
 /// </summary>
 Class BLL_Guest


  Private mycom,mymod,mydal


  Private LI,UL


  Private DEL
 
  获取信息
  Public Sub GetGuest()


   mydal.GetGuest(Id)


  End Sub


  新增信息
  Public Sub Insert()
  
   mymod.Content = Request(“content”)
   mymod.re = Request(“Re”)
   mymod.Addtime = Now()
   mymod.Ip = request.servervariables(“HTTP_X_FORWARDED_FOR”)
   If len(mymod.Ip)<=0 Then mymod.Ip = request.servervariables(“REMOTE_ADDR”)


   Call mydal.Insert(mymod)


  End Sub


  更新信息
  Public Sub Update()


   Call mydal.Update(mymod)


  End Sub


  删除信息
  Public Sub Delete()


   mydal.Delete(Request(“Id”))


  End Sub


  查找信息
  Public Function FindByPage()


   Dim PageSize,CurrentPage,WhereValue,OrderValue,RecordCount
   Dim objRS
   Dim tmp1,tmp2,tmp3,parms,i
   Dim tCMD
   tCMD = Request(“tCMD”)
   PageSize = “8”
   CurrentPage = Request(“PageNo”)
   If Len(CurrentPage)<=0 Then
    CurrentPage=1
   End If
   WhereValue = “”
   OrderValue = “Id”
   Set objRS = mydal.FindByPage(PageSize,CurrentPage-1,WhereValue,OrderValue)
   i = 1
   RecordCount = mydal.Count(WhereValue)
   Do While Not objRS.EOF
    If tCMD=”DEL” Then
     DEL = “<a href=””?tCMD=DEL&Id=”&objRS(“Id”)&”””>删除</a>”
    Else
     DEL = “”
    End If
    parms=Array(i,objRS(“content”),objRS(“ip”),objRS(“addtime”),DEL)
    tmp1 = tmp1 & mycom.Format(LI,parms)
    objRs.Movenext
    i = i + 1
   Loop
   tmp3 = mycom.Page(PageSize,CurrentPage,RecordCount,”guest/index.asp?tCMD=LIST”)
   parms=Array(tmp1,tmp3)
   tmp2 = tmp2 & mycom.Format(UL,parms)


   FindByPage = tmp2


  End Function


  Private Sub Class_Initialize()


   LI = “<li><span>{0}</span> <span>{1}</span><br /><span>作者:{2}</span> <span>{3}</span> <span>{4}</span></li>” & vbCrLf
   UL = “<UL>{0}<li>{1}</li></UL>”
   DEL = “”


   Set mycom = new Common
   set mymod = new MOD_Guest
   set mydal = new DAL_Guest


  End Sub


  Private Sub Class_Terminate()


   Set mycom = Nothing
   Set mymod = Nothing
   set mydal = Nothing


  End Sub


 End Class
%>


DAL_Guest.asp
<%
 /// <summary>
 /// 摘要说明。
 /// </summary>
 Class DAL_Guest
 
  Private SQL_01
  Private SQL_02
  Private SQL_03
  Private SQL_04
  Private SQL_05
  Private SQL_06
  Private SQL_07


  Private mycom,myacc,mymod


  /// <summary>
  /// 获得信息
  /// </summary>
  /// <param name=”Id”>判断字段</param>
  /// <returns>信息体</returns>
  Public Function GetGuest(Id)


   Dim parms,SQL,objRS
   parms = Array(Id)
   SQL  = mycom.Format(SQL_01,parms)
   Set objRS = myacc.ExecuteReader(myacc.CONN_STRING,SQL)
   If  Not objRS.EOF then
    Call mymod.SetVar(objRs(“Id”),objRs(“Content”),objRs(“Re”),objRs(“Addtime”),objRs(“Ip”))
    Set GetGuest = mymod
   Else
    GetGuest = Null
   End If
  
  End Function


  /// <summary>
  /// 插入信息
  /// </summary>
  /// <param name=””>信息体</param>
  Public Sub Insert(vmod)


   Dim parms,SQL
   parms = Array(vmod.Content,vmod.Re,vmod.Addtime,vmod.Ip)
   SQL  = mycom.Format(SQL_02,parms)
   Call myacc.ExecuteReader(myacc.CONN_STRING,SQL)


  End Sub


  /// <summary>
  /// 更新信息
  /// </summary>
  /// <param name=””>信息体</param>
  Public Sub Update(vmod)
  
   Dim parms,SQL
   parms = Array(vmod.Id,vmod.Content,vmod.Re,vmod.Addtime,vmod.Ip)
   SQL  = mycom.Format(SQL_03,parms)
   Call myacc.ExecuteReader(myacc.CONN_STRING,SQL)


  End Sub


  /// <summary>
  /// 删除信息
  /// </summary>
  /// <param name=””>信息体</param>
  Public Sub Delete(Id)


   Dim parms,SQL
   parms = Array(Id)
   SQL  = mycom.Format(SQL_04,parms)
   Call myacc.ExecuteNonQuery(myacc.CONN_STRING,SQL)


  End Sub


  /// <summary>
  /// 统计信息
  /// </summary>
  /// <param name=””>信息体</param>
  Public Function Count(WhereValue)


   Dim parms,SQL,objRS
   parms = Array(WhereValue)
   SQL  = mycom.Format(SQL_07,parms)
   Set objRS = myacc.Recordset(myacc.CONN_STRING,SQL)
   Count = objRS.RecordCount


  End Function


  /// <summary>
  /// 根据条件列出所有信息(带有分页)
  /// </summary>
  /// <param name=”PageSize”>每页记录数</param>
  /// <param name=”CurrentPage”>页码</param>
  /// <param name=”WhereValue”>判断值</param>
  /// <param name=”OrderValue”>排序</param>
  /// <returns>返回objRS</returns>
  Public Function FindByPage(PageSize,CurrentPage,WhereValue,OrderValue)


   Dim parms,SQL,objRS
   Dim s1
   If CurrentPage=”0″ Then  
    s1 =  PageSize & “|” + OrderValue & “|” & WhereValue
    parms = Split(s1,”|”)
    SQL = mycom.Format(SQL_05,parms)
   Else
    s1 = PageSize & “|” & OrderValue & “|” + WhereValue & “|” & CurrentPage*PageSize
    parms = Split(s1,”|”)
    SQL = mycom.Format(SQL_06,parms)
   End If


   Set objRS = myacc.ExecuteReader(myacc.CONN_STRING,SQL)
   Set FindByPage = objRS
  
  End Function



  Private Sub Class_Initialize()


   SQL_01 = “Select * From [Guest] Where Id = {0}”
   SQL_02 = “Insert into [Guest] ([Content],[Re],[Addtime],[Ip]) values({0},{1},{2},{3})”
   SQL_03 = “Update [Guest] Set [Content]={1},[Re]={2},[Addtime]={3},[Ip]={4} Where Id = {0}”
   SQL_04 = “Delete From [Guest] Where Id In ({0})”
   SQL_05 = “Select Top {0} * From [Guest] Where Content Like %{2}% Order By {1} Desc,Id Desc”
   SQL_06 = “Select Top {0} * From [Guest] Where Content Like %{2}% And Id Not IN(Select Top {3} Id From [Guest] Where Content Like %{2}% Order By {1} Desc,Id Desc) Order By {1} Desc,Id Desc”
   SQL_07 = “Select * From [Guest] Where Content Like %{0}% “


   Set mycom = new Common
   Set myacc = new AccHelper
   Set mymod = new MOD_Guest


  End Sub


  Private Sub Class_Terminate()


   Set mycom = Nothing
   Set myacc = Nothing
   Set mymod = Nothing


  End Sub


 End Class
%>


MOD_Guest.asp
<%
 /// <summary>
 /// 摘要说明。
 /// </summary>
 Class MOD_Guest


  Public Id
  Public Content
  Public Re
  Public Addtime
  Public Ip


  Public Sub SetVar(vId,vContent,vRe,vAddtime,vIp)
   Id=vId
   Content=vContent
   Re=vContent
   Addtime=vAddtime
   Ip=vIp
  End Sub


 End Class
%>


Common.asp
<%
 /// <summary>
 /// 摘要说明
 /// </summary>
 Class Common


  /// <summary>
  /// 获得信息
  /// </summary>
  /// <param name=”Id”>需要内容</param>
  /// <param name=”Id”>替换关键字</param>
  /// <returns>格式化后内容</returns>
  Public Function Format(str,arr)


   Dim r,i
   r = str  
   For i = 0 To UBound(arr)
    r = Replace(r,”{“&i&”}”,arr(i))
   Next
   Format = r


  End Function


  Public Function Page(PageSize,CurrentPage,RecordCount,PageUrl)
  
   const C_RECORDCOUNT = “合计<STRONG><FONT color=””red””>{0}</FONT></STRONG>篇&nbsp;|”
   const C_FIRSTPAGE1 = “&nbsp;<a href=””#”” onclick=””$({0}&amp;PageNo={1})””>首页</a>”
   const C_FIRSTPAGE2 = “&nbsp;首页”
   const C_PREVPAGE1 = “&nbsp;<a href=””#”” onclick=””$({0}&amp;PageNo={1})””>上一页</a>”
   const C_PREVPAGE2 = “&nbsp;上一页”
   const C_NEXTPAGE1 = “&nbsp;<a href=””#”” onclick=””$({0}&amp;PageNo={1})””>下一页</a>”
   const C_NEXTPAGE2 = “&nbsp;下一页”
   const C_LASTPAGE1 = “&nbsp;<a href=””#”” onclick=””$({0}&amp;PageNo={1})””>尾页</a>”
   const C_LASTPAGE2 = “&nbsp;尾页”
   const C_CURRENTPAGE = “&nbsp;页次:<STRONG><FONT color=””red””>{0}</FONT>/{1}</STRONG>页”
   const C_PAGESIZE = “&nbsp;<STRONG>{0}</STRONG>篇/页&nbsp;&nbsp;”
   const C_GOTOPAGE = “&nbsp;跳转:<input type=””text”” name=””goto”” value=””{1}”” onchange=””$({0}&amp;PageNo=+this.value)”” style=””width:20px;border:1px””/>&nbsp;&nbsp;”
  
   Dim PageCount,pages
   Dim lRecordCount,lFirstpage,lPrevpage,lNextpage,lLastpage,lCurrentpage,lPagesize,lGotopage
   Dim p,parms


   If RecordCount Mod PageSize <> 0 Then
    pages = 1
   else
    pages = 0
   End If
   PageCount=CInt(RecordCount/PageSize + pages)
  
   parms=Array(RecordCount)
   lRecordCount = Format(C_RECORDCOUNT,parms)


   if CInt(CurrentPage)>1 Then
    parms=Array(Pageurl,1)
    lFirstpage = Format(C_FIRSTPAGE1,parms)
    parms=Array(Pageurl,CInt(CurrentPage)-1)
    lPrevpage = Format(C_PREVPAGE1,parms)
   Else
    lFirstpage=C_FIRSTPAGE2
    lPrevpage=C_PREVPAGE2
   End If


   if CInt(CurrentPage)<PageCount Then
    parms=Array(Pageurl,CInt(CurrentPage)+1)
    lNextpage = Format(C_NEXTPAGE1,parms)
    parms=Array(Pageurl,CInt(CurrentPage)+1)
    lLastpage = Format(C_LASTPAGE1,parms)
   Else  
    lNextpage=C_NEXTPAGE2
    lLastpage=C_LASTPAGE2
   End If


   parms=Array(CurrentPage,PageCount)
   lCurrentpage = Format(C_CURRENTPAGE,parms)
   parms=Array(PageSize)
   lPagesize = Format(C_PAGESIZE,parms)
   parms=Array(Pageurl,CurrentPage)
   lGotopage = Format(C_GOTOPAGE,parms)
  
   p=lRecordCount&lFirstpage&lPrevpage&lNextpage&lLastpage&lCurrentpage&lPagesize&lGotopage
   Page = p


  End Function


 End Class
%>


AccHelper.asp
<%
 /// <summary>
 /// AccHelper 的摘要说明。
 /// </summary>
 Class AccHelper


  Public CONN_STRING


  /// <summary>
  /// 执行ExecuteNonQuery
  /// </summary>
  /// <param name=”connString”>连接字符</param>
  /// <param name=”cmdText”>sql命令</param>
  Public Function ExecuteNonQuery(connString,cmdText)
  
   Dim objConn
   Set objConn = Server.CreateObject(“ADODB.Connection”)
   objConn.Open connString
   objConn.Execute(cmdText)


  End Function


  /// <summary>
  /// 执行ExecuteReader
  /// </summary>
  /// <param name=”connString”>连接字符</param>
  /// <param name=”cmdText”>sql命令</param>
  /// <returns>RS</returns>
  Public Function ExecuteReader(connString,cmdText)
 
   Dim objConn,objRS
   Set objConn = Server.CreateObject(“ADODB.Connection”)
   objConn.Open connString
   Set objRS = objConn.Execute(cmdText)
   Set ExecuteReader = objRS


  End Function


  /// <summary>
  /// 执行Recordset
  /// </summary>
  /// <param name=”connString”>连接字符</param>
  /// <param name=”cmdText”>sql命令</param>
  /// <returns>RS</returns>
  Public Function Recordset(connString,cmdText)
 
   Dim objConn,objRS
   Set objConn = Server.CreateObject(“ADODB.Connection”)
   objConn.Open connString
   Set objRS = Server.CreateObject(“ADODB.RecordSet”)
   objRS.Open cmdText,objConn,1,3
   Set Recordset = objRS


  End Function


  Private Sub Class_Initialize()
   CONN_STRING = “provider = microsoft.jet.oledb.4.0;data source=” & Server.Mappath(“db.mdb”)
  End Sub


 End Class
%>

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