最近做了一些涉及base64的东西,用多种语言写了这个函数,手头有这个vbs脚本的函数(非原创),在此记忆一下
MsgBox "abc的base64编码是 : " & base64Encode("abc"),64,"abc的base64编码是"
MsgBox "编码再解码是 : " & base64uncode(base64Encode("abc")),64,"编码再解码"
Function base64Encode(sString)
If sString = "" or IsNull(sString) Then
base64Encode = ""
Exit Function
End If
Dim xml_dom, Node
Set xml_dom = CreateObject("Microsoft.XMLDOM")
With xml_dom
.loadXML ("
")
Set Node = xml_dom.createElement("MyText")
With Node
.dataType = "bin.base64"
.nodeTypedValue = Gb2312_Stream(sString)
base64Encode = .Text
End With
xml_dom.documentElement.appendChild Node
End With
Set xml_dom = Nothing
End Function
Function base64uncode(sString)
If sString = "" or IsNull(sString) Then
base64uncode = ""
Exit Function
End If
Dim xml_dom, Node
Set xml_dom = CreateObject("Microsoft.XMLDOM")
With xml_dom
.loadXML ("
")
Set Node = xml_dom.createElement("MyText")
With Node
.dataType = "bin.base64"
.Text = sString
base64uncode = Stream_GB2312(.nodeTypedValue)
End With
xml_dom.documentElement.appendChild Node
End With
Set xml_dom = Nothing
End Function
Function Gb2312_Stream(sString)
Dim dr
Set dr = CreateObject("ADODB.Stream")
With dr
.Mode = 3
.Type = 2
.open
.Charset = "gb2312"
.WriteText sString
.position = 0
.Type = 1
Gb2312_Stream = .Read
.Close
End With
Set dr = Nothing
End Function
Function Stream_GB2312(sStream)
Dim dr
Set dr = CreateObject("ADODB.Stream")
With dr
.Mode = 3
.Type = 1
.open
.Write sStream
.position = 0
.Type = 2
.Charset = "gb2312"
Stream_GB2312 = .ReadText
.Close
End With
Set dr = Nothing
End Function