asp简单的搜索引擎代码
下面是库中URLINDEX表:URL和Keywords字段分别添加了索引.
URL 文本 (索引:有(无重复))
Title 文本
Description 文本
Summary 文本
Keywords 文本(索引:有(无重复))
doquery.asp
简单搜索引擎
<%
dim act
act=request("act")
if(act="search") then
QueryString = Request.form( "QueryString" )
QueryWords = Split( QueryString )
strIndent = " "
' 如果搜索为空则返回
If QueryString = "" Then
Response.Redirect( "default.asp" )
End If
Session.timeout = 2
If IsObject(Session("sitesearch_conn")) Then
Set conn = Session("sitesearch_conn")
Else
Set conn = Server.CreateObject("ADODB.Connection")
conn.open "driver={Microsoft Access Driver (*.mdb)};dbq=" &
Server.MapPath("database/SiteSearch.mdb"),"",""
Set Session("sitesearch_conn") = conn
End If
' 查询语句
sql = "SELECT * FROM [URLIndex] WHERE"
'搜索Description字段
sql = sql & " ( [Description] LIKE '%" & QueryWords( 0 ) & "%'" ' First
For i = LBound( QueryWords ) + 1 to UBound( QueryWords )
If QueryWords( i ) <> "" and UCase( QueryWords(i) ) <> "OR" and UCase( QueryWords(i) ) <>
"AND" Then
If uCase( QueryWords( i-1 ) ) = "OR" Then
sql = sql & " OR [Description] LIKE '%" & QueryWords( i ) & "%'"
Else
sql = sql & " AND [Description] LIKE '%" & QueryWords( i ) & "%'"
End If
End If
Next
' 搜索Keywords字段
sql = sql & " ) OR ( [Keywords] LIKE '%" & QueryWords( 0 ) & "%'"
For i = LBound( QueryWords ) + 1 to UBound( QueryWords )
If QueryWords( i ) <> "" and UCase( QueryWords(i) ) <> "OR" and UCase( QueryWords(i) ) <>
"AND" Then
If uCase( QueryWords( i-1 ) ) = "OR" Then
sql = sql & " OR [Keywords] LIKE '%" & QueryWords( i ) & "%'"
Else
sql = sql & " AND [Keywords] LIKE '%" & QueryWords( i ) & "%'"
End If
End If
Next
' 搜索Title字段
sql = sql & " ) OR ( [Title] LIKE '%" & QueryWords( 0 ) & "%'"
For i = LBound( QueryWords ) + 1 to UBound( QueryWords )
If QueryWords( i ) <> "" and UCase( QueryWords(i) ) <> "OR" and UCase( QueryWords(i) ) <>
"AND" Then
If uCase( QueryWords( i-1 ) ) = "OR" Then
sql = sql & " OR [Title] LIKE '%" & QueryWords( i ) & "%'"
Else
sql = sql & " AND [Title] LIKE '%" & QueryWords( i ) & "%'"
End If
End If
Next
' 搜索Summary字段
sql = sql & " ) OR ( [Summary] LIKE '%" & QueryWords( 0 ) & "%'"
For i = LBound( QueryWords ) + 1 to UBound( QueryWords )
If QueryWords( i ) <> "" and UCase( QueryWords(i) ) <> "OR" and UCase( QueryWords(i) ) <>
"AND" Then
If uCase( QueryWords( i-1 ) ) = "OR" Then
sql = sql & " OR [Summary] LIKE '%" & QueryWords( i ) & "%'"
Else
sql = sql & " AND [Summary] LIKE '%" & QueryWords( i ) & "%'"
End If
End If
Next
sql = sql & " )"
'
Set rs = Server.CreateObject("ADODB.Recordset")
rs.Open sql, conn, 3, 3
Response.Write "
你搜索的是: " & QueryString
Response.Write "
搜索的关键字: "
For i = LBound( QueryWords ) to UBound( QueryWords )
Response.Write "
" & strIndent & i & ": " & QueryWords( i )
Next
' Print the SQL String
Response.Write "
sql 语句 : " & sql
' Print the Results
Response.Write "
结果 : "
On Error Resume Next
rs.MoveFirst
Do While Not rs.eof
Response.Write "
" & "" & rs.Fields("Title") & " - "
Response.Write rs.Fields("Description") & "
"
Response.Write " URL: " &
rs.Fields("URL") & ""
Response.Write "
"
rs.MoveNext
Loop
Response.Write "
"
end if
%>
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