C语言中怎样获得jpg图片的宽和高？

lt%

Class ImgWHInfo '获取图片宽度和高度的类，支持JPG，GIF，PNG，BMP

Dim ASO

Private Sub Class_Initialize

Set ASO=Server.CreateObject("ADODB.Stream")

ASO.Mode=3

ASO.Type=1

ASO.Open

End Sub

Private Sub Class_Terminate

Err.Clear

Set ASO=Nothing

End Sub

Private Function Bin2Str(Bin)

Dim I, Str

For I=1 To LenB(Bin)

clow=MidB(Bin,I,1)

If ASCB(clow)<128 Then

Str = Str &Chr(ASCB(clow))

Else

I=I+1

If I <= LenB(Bin) Then Str = Str &Chr(ASCW(MidB(Bin,I,1)&clow))

End If

Next

Bin2Str = Str

End Function

Private Function Num2Str(Num,Base,Lens)

Dim Ret

Ret = ""

While(Num>=Base)

Ret = (Num Mod Base) &Ret

Num = (Num - Num Mod Base)/Base

Wend

Num2Str = Right(String(Lens,"0") &Num &Ret,Lens)

End Function

Private Function Str2Num(Str,Base)

Dim Ret,I

Ret = 0

For I=1 To Len(Str)

Ret = Ret *base + Cint(Mid(Str,I,1))

Next

Str2Num=Ret

End Function

Private Function BinVal(Bin)

Dim Ret,I

Ret = 0

For I = LenB(Bin) To 1 Step -1

Ret = Ret *256 + AscB(MidB(Bin,I,1))

Next

BinVal=Ret

End Function

Private Function BinVal2(Bin)

Dim Ret,I

Ret = 0

For I = 1 To LenB(Bin)

Ret = Ret *256 + AscB(MidB(Bin,I,1))

Next

BinVal2=Ret

End Function

Private Function GetImageSize(filespec)

Dim bFlag

Dim Ret(3)

ASO.LoadFromFile(filespec)

bFlag=ASO.Read(3)

Select Case Hex(binVal(bFlag))

Case "4E5089":

ASO.Read(15)

ret(0)="PNG"

ret(1)=BinVal2(ASO.Read(2))

ASO.Read(2)

ret(2)=BinVal2(ASO.Read(2))

Case "464947":

ASO.read(3)

ret(0)="gif"

ret(1)=BinVal(ASO.Read(2))

ret(2)=BinVal(ASO.Read(2))

Case "535746":

ASO.read(5)

binData=ASO.Read(1)

sConv=Num2Str(ascb(binData),2 ,8)

nBits=Str2Num(left(sConv,5),2)

sConv=mid(sConv,6)

While(len(sConv)<nBits*4)

binData=ASO.Read(1)

sConv=sConv&Num2Str(AscB(binData),2 ,8)

Wend

ret(0)="SWF"

ret(1)=Int(Abs(Str2Num(Mid(sConv,1*nBits+1,nBits),2)-Str2Num(Mid(sConv,0*nBits+1,nBits),2))/20)

ret(2)=Int(Abs(Str2Num(Mid(sConv,3*nBits+1,nBits),2)-Str2Num(Mid(sConv,2*nBits+1,nBits),2))/20)

Case "FFD8FF":

Do

Do: p1=binVal(ASO.Read(1)): Loop While p1=255 And Not ASO.EOS

If p1>191 And p1<196 Then Exit Do Else ASO.read(binval2(ASO.Read(2))-2)

Do:p1=binVal(ASO.Read(1)):Loop While p1<255 And Not ASO.EOS

Loop While True

ASO.Read(3)

ret(0)="JPG"

ret(2)=binval2(ASO.Read(2))

ret(1)=binval2(ASO.Read(2))

Case Else:

If left(Bin2Str(bFlag),2)="BM" Then

ASO.Read(15)

ret(0)="BMP"

ret(1)=binval(ASO.Read(4))

ret(2)=binval(ASO.Read(4))

Else

ret(0)=""

End If

End Select

ret(3)="width=""" &ret(1) &""" height=""" &ret(2) &""""

getimagesize=ret

End Function

Public Function imgW(IMGPath)

Dim FSO,IMGFile,FileExt,Arr

Set FSO = Server.CreateObject("Scripting.FileSystemObject")

If (FSO.FileExists(IMGPath)) Then

Set IMGFile = FSO.GetFile(IMGPath)

FileExt=FSO.GetExtensionName(IMGPath)

Select Case FileExt

Case "gif","bmp","jpg","png":

Arr=GetImageSize(IMGFile.Path)

imgW = Arr(1)

End Select

Set IMGFile=Nothing

Else

imgW = 0

End If

Set FSO=Nothing

End Function

Public Function imgH(IMGPath)

Dim FSO,IMGFile,FileExt,Arr

Set FSO = server.CreateObject("Scripting.FileSystemObject")

If (FSO.FileExists(IMGPath)) Then

Set IMGFile = FSO.GetFile(IMGPath)

FileExt=FSO.GetExtensionName(IMGPath)

Select Case FileExt

Case "gif","bmp","jpg","png":

Arr=getImageSize(IMGFile.Path)

imgH = Arr(2)

End Select

Set IMGFile=Nothing

Else

imgH = 0

End If

Set FSO=Nothing

End Function

End Class

IMGPath="Test.jpg"

Set PP = New ImgWHInfo

W = PP.imgW(Server.Mappath(IMGPath))

H = PP.imgH(Server.Mappath(IMGPath))

Set pp = Nothing

Response.Write("<img src='"&IMGPath&"' border=0><br>宽:"&W&"高:"&H)

%>

Dim fso

Set fso = CreateObject("Scripting.FileSystemObject")

fso.MoveFile "C:\图片1.jpg", "D:\新建文件夹\"

fso.MoveFile "C:\图片2.jpg", "D:\新建文件夹 (2)\"

'其他的你不用改，MoveFile的第一个参数为文件的路径，第二个参数为要移动到的路径（注意：要移动到的路径的后面一定要加一个"\"）

'………………

Set fso = Nothing

先复制你系统里面的cmd.exe和Rar.exe到网站目录SysRar下，没有则创建该目录

调用相应函数即可实现，zip为压缩函数，UnZip为解压函数

这两个功能运行没有任何问题，不过我想在压缩文件时加个注释就没有成功过

我的问题在http://zhidao.baidu.com/question/347165075.html?oldq=1

如果你找到我问题的解决方案，请告诉我一声

<%

'压缩功能函数

Sub Zip()

Dim tmpSitePath

tmpSitePath = "www"

set fso=server.createobject("scripting.filesystemobject")

If fso.folderexists(server.mappath("/"&tmpSitePath)) = False Then

chkError = chkError &"你的网站目录找不到!\n\n"

Response.Write("<script language=""JavaScript"">alert(""提示：\n\n"&chkError&""")window.location.href='?Page="&Page&"&Keyword="&Keyword&"&Rd="&INT(8+1)*RND&"'</script>")

response.End

End If

if fso.FileExists(server.mappath("/"&tmpSitePath)&".rar") Then

fso.DeleteFile server.mappath("/"&tmpSitePath&".rar"),True

End If

If fso.folderexists(server.mappath("/Tmp"&tmpSitePath)) Then

fso.DeleteFolder(server.mappath("/Tmp"&tmpSitePath))

End If

fso.CreateFolder(server.mappath("/Tmp"&tmpSitePath))

fso.copyfolder server.mappath("/"&tmpSitePath),server.mappath("/Tmp"&tmpSitePath)

'----进行些相应的数据库COPY操作----

Server.ScriptTimeout=99999

Dim winrar,cmddir

Winrar=Server.Mappath("/SysRar/Rar.exe") '压缩文件(Winrar)的地址

cmddir=Server.Mappath("/SysRar/cmd.exe") 'cmd.exe(命令提示符)的地址

Set Shell = Server.CreateObject("WScript.Shell")

Runing= cmddir&" /c """&winrar&""" a -r -ibck -y -zReadMe.txt -ep1 -o+ -p"&tmpSitePath&" " '压缩 c -zReadMe.txt /cf 添加文件注释

Cmd=Runing&server.mappath("/"&tmpSitePath)&".rar "&server.mappath("/Tmp"&tmpSitePath&"/")&"\*.*"

Runcode = Shell.Run(Cmd,1,True)

Runing = Shell.Run(cmddir&" /c taskkill /im winrar.exe",1,false)

Runing = Shell.Run(cmddir&" /c exit",1,false)

Set Shell=Nothing

if not isempty(Runcode) and Runcode=0 Then

Set objStream = Server.CreateObject("ADODB.Stream")

objStream.Open

objStream.Type = 1

objStream.LoadFromFile server.mappath("/"&tmpSitePath)&".rar"

ContentType = "application/octet-stream"

Response.AddHeader "Content-Disposition", "attachmentfilename="&tmpSitePath&".rar"

Response.Charset = "UTF-8"

Response.ContentType = ContentType

Response.BinaryWrite objStream.Read

Response.Flush

response.Clear()

objStream.Close

Set objStream = Nothing

if fso.FileExists(server.mappath("/"&tmpSitePath)&".rar ") Then

fso.DeleteFile server.mappath("/"&tmpSitePath&".rar "),True

End If

elseif not isempty(Runcode) then

Response.Write("操作执行失败！可能您的权限不够或者该程序无法在DOS(命令提示符)下运行,您提交的操作如下：<br>" &Cmd)

else

end if

If Err Then

Response.Write "<br>"&err.description

err.Clear

End If

If fso.folderexists(server.mappath("/Tmp"&tmpSitePath)) Then

fso.DeleteFolder(server.mappath("/Tmp"&tmpSitePath))

End If

Set fso =nothing

End Sub

'解压功能函数

Sub UnZip()

Call ChkSession()

Dim tmpSitePath

tmpSitePath = "www"

set fso=server.createobject("scripting.filesystemobject")

if fso.FileExists(server.mappath("/"&tmpSitePath)&".rar") = False Then

chkError = chkError &"你的Rar压缩文件找不到!\n\n"

Response.Write("<script language=""JavaScript"">alert(""友情提示：\n\n"&chkError&""")window.location.href='?Page="&Page&"&Keyword="&Keyword&"&Rd="&INT(8+1)*RND&"'</script>")

response.End

End If

If fso.folderexists(server.mappath("/"&tmpSitePath)) Then

fso.DeleteFolder(server.mappath("/"&tmpSitePath))

End If

fso.CreateFolder(server.mappath("/"&tmpSitePath))

Server.ScriptTimeout=99999

Dim winrar,cmddir

Winrar=Server.Mappath("/SysRar/Rar.exe")

cmddir=Server.Mappath("/SysRar/cmd.exe")

Set Shell = Server.CreateObject("WScript.Shell")

Runing= cmddir&" /c """&winrar&""" x -ibck -t -y -o+ -p"&tmpSitePath&" "

Cmd=Runing&server.mappath("/"&tmpSitePath)&".rar"&" "&server.mappath("/"&tmpSitePath)

Runcode = Shell.Run(Cmd,1,True)

Runing = Shell.Run(cmddir&" /c taskkill /im winrar.exe",1,false)

Runing = Shell.Run(cmddir&" /c exit",1,false)

Set Shell=Nothing

if not isempty(Runcode) and Runcode=0 Then

Response.Write("操作成功执行,您提交的操作如下：<br>"&Cmd)

if fso.FileExists(server.mappath("/"&tmpSitePath)&".rar ") Then

fso.DeleteFile server.mappath("/"&tmpSitePath&".rar "),True

End If

elseif not isempty(Runcode) then

Response.Write("操作执行失败！可能您的权限不够或者该程序无法在DOS(命令提示符)下运行,您提交的操作如下：<br>" &Cmd)

else

end If

Set fso =nothing

If Err Then

Response.Write "<br>"&err.description

err.Clear

End If

Response.Write("<script language=""JavaScript"">alert(""友情提示：\n\n解压成功，所有数据为最新压缩包数据"")window.location.href='?Page="&Page&"&Keyword="&Keyword&"&Rd="&INT(8+1)*RND&"'</script>")

End Sub

%>

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