- <%
- Class ImgWHInfo ''獲取圖片寬度和高度的類，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
- %>
- <%
- Dim W,PXHeight
- Dim Pp '//Proportion
- If W=0 or W="" Then
- PXWidth=0
- PXHeight=0
- Else
- Pp=FormatNumber(W/H,2) '//長寬比
- End If
- If W>=H Then
- If W>=300 Then
- PXWidth=300
- PXHeight=FormatNumber(300/Pp,0)
- Else
- PXWidth=W
- PXHeight=H
- End If
- Else
- If PHeight>=260 Then
- PXHeight=260
- PXWidth=FormatNumber(260*Pp,0)
- Else
- PXWidth=W
- PXHeight=H
- End If
- End If
- response.Write(PXWidth)
- %>
- <img src="Test.jpg" border="0" width=<%=PXWidth%>
- height=<%=PXHeight%>>
獲取圖片寬度和高度的類，支持JPG，GIF，PNG，BMP
2019-11-01 13:15asp教程網(wǎng) ASP教程
獲取圖片寬度和高度的類，支持JPG，GIF，PNG，BMP
延伸 · 閱讀
- 2024-12-13IGN《宣誓》試玩評價超高：高度自由的RPG
- 2024-12-13晨報|潛行者2MOD社區(qū)發(fā)力 拳頭回應雙城之戰(zhàn)AI圖片
- 2024-12-13真機外觀疑似曝光？配件廠商意外泄露Switch 2圖片
- 2022-03-07react antd表格中渲染一張或多張圖片的實例
- 2022-03-05C#實現(xiàn)批量下載圖片到本地示例代碼
- 2022-03-05OpenCV自動給圖片添加彩虹特效的實現(xiàn)示例
精彩推薦
- ASP教程
asp Access數(shù)據(jù)備份,還原,壓縮類代碼
asp Access數(shù)據(jù)備份,還原,壓縮類實現(xiàn)代碼，大家可以參考下。...
- ASP教程
asp 標記字符串中指定字符變色不區(qū)分大小寫
今天遇到這種問題，單純的使用replace函數(shù)不行，他會改變原有的字符串的大小寫,在網(wǎng)上找到相關的代碼，自己備份下...
- ASP教程
ASP.NET 數(shù)據(jù)源
數(shù)據(jù)源 一個 data sourse 控件與數(shù)據(jù)綁定的控件相互作用，并隱藏了復雜的數(shù)據(jù)的聯(lián)編過程。這些是提供數(shù)據(jù)給 data bound 控件的工具，并且支持如插入，刪除...
- ASP教程
ASP常用函數(shù):getpy()
ASP常用函數(shù):getpy()...
- ASP教程
asp之基于adodb.stream的文件操作類
asp之基于adodb.stream的文件操作類...
- ASP教程
asp 采集實戰(zhàn)代碼
最近實在是太流行采集了，本人是不喜歡采集的，但對采集的原理我卻很有興趣進行研究，拿到了網(wǎng)上采集常用函數(shù)，對其進行了一番研究，并實戰(zhàn)，結果...
- ASP教程
JScript中遍歷Request表單參數(shù)集合的方法
這篇文章主要介紹了JScript中遍歷Request表單參數(shù)集合的方法,本文以遍歷Request.QueryString集合為例給出了實現(xiàn)代碼,需要的朋友可以參考下...
- ASP教程
asp+javascript實現(xiàn)404頁的處理轉(zhuǎn)換
asp+javascript實現(xiàn)404頁的處理轉(zhuǎn)換...
