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字符编码转换吗?
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1.字符与gb2312(gbk的子集):
Public Function GBKEncode(ByVal sInput As String) As String
Dim ret_GBKEncode As String = ""
Dim i As Integer
Dim startIndex As Integer = 0
Dim endIndex As Integer
Dim x() As Byte = System.Text.Encoding.Default.GetBytes(sInput) '字符以及字符串在vb2008中都是以unicode编码存储的
endIndex = x.Length - 1
For i = startIndex To endIndex
ret_GBKEncode = "%" Hex(x(i))
Next
Return ret_GBKEncode
End Function
'GBK解码
Public Function GBKDecode(ByVal sInput As String) As String
sInput = sInput.Replace("%", "")
Dim ret_GBKDecode As String = ""
Dim sLen As Integer = sInput.Length
Dim n As Integer = sLen \ 2
Dim sBytes(0 To n - 1) As Byte
'转化为字节码
For i As Integer = 1 To n
sBytes(i - 1) = CByte("H" sInput.Substring(2 * i - 2, 2))
Next
'将字节码转化为字符串
ret_GBKDecode = System.Text.Encoding.Default.GetString(sBytes)
Return ret_GBKDecode
End Function
2.Unicode字符串为UTF-8
Imports System.Text
Public Function StringAsUtf8Bytes(ByVal strData As String) As Byte()
Dim bytes() As Byte
bytes = Encoding.UTF8.GetBytes(strData)
Return bytes
End Function
'这里可以类推出好几种。
Public Function GBKDecode(ByVal sInput As String) As String
sInput = sInput.Replace("%", "")
sInput = sInput.Replace(":", "")
Dim ret_GBKDecode As String = ""
Dim sLen As Integer = sInput.Length
Dim n As Integer = sLen \ 2
Dim sBytes(0 To n - 1) As Byte
'转化为字节码
For i As Integer = 1 To n
sBytes(i - 1) = CByte("H" sInput.Substring(2 * i - 2, 2))
Next
'将字节码转化为字符串
ret_GBKDecode = System.Text.Encoding.UTF8.GetString(sBytes)
Return ret_GBKDecode
End Function
'上面是函数,调用方法
MsgBox(GBKDecode(":%E9%80%81%E8%BE%BE%E6%97%A5%E6%9C%9F%20%E9%80%81%E8%BE%BE%E6%97%B6%E9%97%B4"))
Imports System.Text
Public Function StringAsUtf8Bytes(ByVal strData As String) As Byte()
Dim bytes() As Byte
bytes = Encoding.UTF8.GetBytes(strData)
Return bytes
End Function
说明:strData参数是GB2312字符串,函数返回UTF8字节数组
根本都不是你说的简单的UTF8编码问题,人家是加密计算,下面的是UTF8编码转化函数
Private Function convert_UTF8(ByVal str As String) As String
Dim byt() As Byte = System.Text.Encoding.GetEncoding("Gb2312").GetBytes(str)
Return System.Text.Encoding.UTF8.GetString(byt)
End Function
vb内使用unicode,在转换字符串只需要把字符串赋值给字节数组就可以了.但vb6函数不能指定编码形式.不是unicode编码,就是ASCII编码,使用StrConv函数带VbStrConv.Narrow参数返回的字符串转到字节后就是ASCII编码的.要使用其他编码的使用API.VB.net可以使用system.text.encoding.UTF-8.GetBytes()方法获取十六进制编码
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