vb.net 如何將編碼GB2312轉(zhuǎn)成UTF8

Imports System.Text

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Public Function StringAsUtf8Bytes(ByVal strData As String) As Byte()

Dim bytes() As Byte

bytes = Encoding.UTF8.GetBytes(strData)

Return bytes

End Function

說明：strData參數(shù)是GB2312字符串，函數(shù)返回UTF8字節(jié)數(shù)組

VB UTF-8 問題

Private Declare Function WideCharToMultiByte Lib "kernel32" (ByVal CodePage As Long, ByVal dwFlags As Long, ByVal lpWideCharStr As Long, ByVal cchWideChar As Long, ByRef lpMultiByteStr As Any, ByVal cchMultiByte As Long, ByVal lpDefaultChar As String, ByVal lpUsedDefaultChar As Long) As Long

Private Declare Function MultiByteToWideChar Lib "kernel32" (ByVal CodePage As Long, ByVal dwFlags As Long, ByVal lpMultiByteStr As Long, ByVal cchMultiByte As Long, ByVal lpWideCharStr As Long, ByVal cchWideChar As Long) As Long

Private Const CP_UTF8 = 65001

Function Utf8ToUnicode(ByRef Utf() As Byte) As String

Dim lRet As Long

Dim lLength As Long

Dim lBufferSize As Long

lLength = UBound(Utf) - LBound(Utf) + 1

If lLength = 0 Then Exit Function

lBufferSize = lLength * 2

Utf8ToUnicode = String$(lBufferSize, Chr(0))

lRet = MultiByteToWideChar(CP_UTF8, 0, VarPtr(Utf(0)), lLength, StrPtr(Utf8ToUnicode), lBufferSize)

If lRet 0 Then

Utf8ToUnicode = Left(Utf8ToUnicode, lRet)

End If

End Function

Private Sub Form_Load()

Dim a As String

Dim b() As Byte

Dim i As Integer

a = "E9 A2 91 E9 81 93 31 00"

ReDim b(UBound(Split(a, " ")) - 1) As Byte

For i = 0 To UBound(Split(a, " ")) - 1

b(i) = "H" Split(a, " ")(i)

Next i

Text1.Text = Utf8ToUnicode(b())

End Sub

gb2312>unicode>utf8， 以及逆轉(zhuǎn)的方法'>VB.net 字符轉(zhuǎn)換問題 字符（漢字、數(shù)字、字母、符號）>gb2312>unicode>utf8， 以及逆轉(zhuǎn)的方法

字符編碼轉(zhuǎn)換嗎?

1.字符與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編碼存儲的

endIndex = x.Length - 1

For i = startIndex To endIndex

ret_GBKEncode = "%" Hex(x(i))

Next

Return ret_GBKEncode

End Function

'GBK解碼

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

'轉(zhuǎn)化為字節(jié)碼

For i As Integer = 1 To n

sBytes(i - 1) = CByte("H" sInput.Substring(2 * i - 2, 2))

Next

'將字節(jié)碼轉(zhuǎn)化為字符串

ret_GBKDecode = System.Text.Encoding.Default.GetString(sBytes)

Return ret_GBKDecode

End Function

2.Unicode字符串為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

'這里可以類推出好幾種。

求教vb.net utf-8 解碼

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

'轉(zhuǎn)化為字節(jié)碼

For i As Integer = 1 To n

sBytes(i - 1) = CByte("H" sInput.Substring(2 * i - 2, 2))

Next

'將字節(jié)碼轉(zhuǎn)化為字符串

ret_GBKDecode = System.Text.Encoding.UTF8.GetString(sBytes)

Return ret_GBKDecode

End Function

'上面是函數(shù)，調(diào)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"))

vb UTF-8漢字轉(zhuǎn)十六進制的問題?

vb內(nèi)使用unicode,在轉(zhuǎn)換字符串只需要把字符串賦值給字節(jié)數(shù)組就可以了.但vb6函數(shù)不能指定編碼形式.不是unicode編碼,就是ASCII編碼,使用StrConv函數(shù)帶VbStrConv.Narrow參數(shù)返回的字符串轉(zhuǎn)到字節(jié)后就是ASCII編碼的.要使用其他編碼的使用API.VB.net可以使用system.text.encoding.UTF-8.GetBytes()方法獲取十六進制編碼

vb.net 將中文轉(zhuǎn)UTF8的代碼？誰有的幫幫我吧！

根本都不是你說的簡單的UTF8編碼問題，人家是加密計算，下面的是UTF8編碼轉(zhuǎn)化函數(shù)

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

名稱欄目：vb.netutf-8的簡單介紹
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