on error resume next
'你的代码，如数据库连接
call catch("显示给用户的提示信息")

<%
option explicit
'例一---------------------------
'必须和on error resume next一起使用，但在网页没有正式发布之前最好将其注释掉，以免在调试时看不到出错详细信息
on error resume next
'i没有定义，会出错，使用catch清除错误并保存到记事本
i
call catch("页面无法访问")
'-------------------------------
'例二---------------------------
function conn()
'必须和on error resume next一起使用
on error resume next
'...........你的连接数据库代码
call catch("数据库打开错误")
end function
'-------------------------------
sub catch(str)
if err.number <> 0 then
dim tmp,path
'错误日志绝对路径，如"/error_log.txt"
path = "/table/error_log.txt"
tmp = tmp & "出错页面：" & geturl & vbcrlf
tmp = tmp & "错误时间：" & now() & vbcrlf
tmp = tmp & "来访ＩＰ：" & ip & vbcrlf
tmp = tmp & "提示信息：" & str & vbcrlf
tmp = tmp & "错误代号：" & err.number & vbcrlf
tmp = tmp & "错误信息：" & err.description & vbcrlf
tmp = tmp & "应用程序：" & err.source & vbcrlf & vbcrlf & vbcrlf
tmp = tmp & file_read(path)
call file_save(tmp,path,1)
err.clear()
die(str)
end if
end sub
'以下为catch所用到的函数--------------------
sub echo(str)
response.write(str)
end sub
sub die(str)
echo(str) : response.end()
end sub
function ip()
ip = request.servervariables("remote_addr")
end function
'获取当前URL
function geturl()
dim tmp
if lcase(request.servervariables("https")) = "off" then
tmp = "http://"
else
tmp = "https://"
end if
tmp = tmp & request.servervariables("server_name")
if request.servervariables("server_port") <> 80 then
tmp = tmp & ":" & request.servervariables("server_port")
end if
tmp = tmp & request.servervariables("url")
if trim(request.querystring) <> "" then
tmp = tmp & "?" & trim(request.queryString)
end if
geturl = tmp
end function
'函数：读取文件内容到字符串
function file_read(path)
dim tmp : tmp = "false"
if not file_exists(path) then file_read = tmp : exit function
dim stream : set stream = server.CreateObject("ADODB.Stream")
with stream
.type = 2 '文本类型
.mode = 3 '读写模式
.charset = "gb2312"
.open
.loadfromfile(server.MapPath(path))
tmp = .readtext()
end with
stream.close : set stream = nothing
file_read = tmp
end function
'函数：保存字符串到文件
function file_save(str,path,model)
if model<>0 and model<>1 then model=1
if model=0 and file_exists(path) then file_save=true : exit function
dim stream : set stream = server.CreateObject("ADODB.Stream")
with stream
.type = 2 '文本类型
.charset = "gb2312"
.open
.writetext str
.savetofile(server.MapPath(path)),model+1
end with
stream.close : set stream = nothing
file_save = file_exists(path)
end function
'函数：检测文件/文件夹是否存在
function file_exists(path)
dim tmp : tmp = false
dim fso : set fso = server.CreateObject("Scripting.FilesyStemObject")
if fso.fileexists(server.MapPath(path)) then tmp = true
if fso.folderexists(server.MapPath(path)) then tmp = true
set fso = nothing
file_exists = tmp
end function
%>