Question

我正在为网关进行数据传输，这需要我以UrlEncoded格式发送数据。但是，.net的UrlEncode会创建小写标签，并且会中断传输（Java会创建大写）。

有什么想法我怎么强迫.net做大写的UrlEncoding？

UPDATE1：

.net out：

dltz7UK2pzzdCWJ6QOvWXyvnIJwihPdmAioZ%2fENVuAlDQGRNCp1F

vs Java's：

dltz7UK2pzzdCWJ6QOvWXyvnIJwihPdmAioZ%2FENVuAlDQGRNCp1F

（它是一个base64d 3DES字符串，我需要保持它的情况）。

Answer 1

我认为你坚持使用C＃给你的东西，并且得到错误表明在另一端实现了糟糕的UrlDecode功能。

话虽如此，你应该只需要遍历字符串并仅使用％符号后面的两个字符进行大写。这将保持您的base64数据完整，同时按照正确的格式按摩编码字符：

public static string UpperCaseUrlEncode(string s)
{
  char[] temp = HttpUtility.UrlEncode(s).ToCharArray();
  for (int i = 0; i < temp.Length - 2; i++)
  {
    if (temp[i] == '%')
    {
      temp[i + 1] = char.ToUpper(temp[i + 1]);
      temp[i + 2] = char.ToUpper(temp[i + 2]);
    }
  }
  return new string(temp);
}

Answer 2

我知道这已经很老了，也许这个解决方案并不存在，但这是我在谷歌尝试解决这个问题时发现的首页之一。

System.Net.WebUtility.UrlEncode(posResult);

这编码为大写。

Answer 3

将HttpUtility.UrlEnocde中的小写百分比编码替换为正则表达式：

static string UrlEncodeUpperCase(string value) {
    value = HttpUtility.UrlEncode(value);
    return Regex.Replace(value, "(%[0-9a-f][0-9a-f])", c => c.Value.ToUpper());
}

var value = "SomeWords 123 #=/ äöü";

var encodedValue = HttpUtility.UrlEncode(value);
// SomeWords+123+%23%3d%2f+%c3%a4%c3%b6%c3%bc

var encodedValueUpperCase = UrlEncodeUpperCase(value);
// now the hex chars after % are uppercase:
// SomeWords+123+%23%3D%2F+%C3%A4%C3%B6%C3%BC

Answer 4

这很容易

Regex.Replace( encodedString, @"%[a-f\d]{2}", m => m.Value.ToUpper() )

即。将所有十六进制字母数字组合替换为大写

Answer 5

如果有其他人来搜索perl代码或PCRE（perl兼容的正则表达式）来解决问题，那么将url编码转换为小写十六进制的（最短的候选者）perl-expression是：< / p>

s/%(\X{2})/%\L$1\E/go

反过来（小写到大写）

s/%(\x{2})/%\U$1\E/go

Answer 6

这是我在OAuth的Twitter应用程序中使用的代码......

    Public Function OAuthUrlEncode(ByVal value As String) As String
    Dim result As New StringBuilder()
    Dim unreservedChars As String = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_.~"
    For Each symbol As Char In value
        If unreservedChars.IndexOf(symbol) <> -1 Then
            result.Append(symbol)
        Else
            result.Append("%"c + [String].Format("{0:X2}", AscW(symbol)))
        End If
    Next

    Return result.ToString()
End Function

希望这有帮助！

Answer 7

这是我对UrlEncode ' MEH: Made this ReadOnly because the range of unreserved characters is specified in the OAuth spec. Inheritors ought not change it. Protected Shared ReadOnly unreservedChars As String = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_.~" ' MEH: Added. These are the other characters HttpUtility.UrlEncode does not convert to percent encoding itself. Protected Shared ReadOnly reservedChars As String = " !'()*" ' If this moves to .NET 4+ ' can be removed. ''' <summary> ''' This is a different Url Encode implementation since the default .NET one outputs the percent encoding in lower case. ''' While this is not a problem with the percent encoding spec, it is used in upper case throughout OAuth. ''' Also the OAuth spec explicitly requires some characters to be unencoded. ''' </summary> ''' <param name="Value">The value to Url encode</param> ''' <returns>Returns a Url encoded string</returns> ''' <revisionhistory> ''' 140313 MEH Fixed to correctly cater for any characters between %80 and %ff, and the O(n^2) IndexOf call. ''' </revisionhistory> Public Shared Function UrlEncode(ByVal Value As String) As String Dim result, buffer As New StringBuilder() For Each symbol As Char In Value If unreservedChars.IndexOf(symbol) <> -1 Then UrlEncodeAppendClear(result, buffer).Append(symbol) ElseIf reservedChars.IndexOf(symbol) = -1 Then 'some symbols produce 2 or more octets in UTF8 so the system urlencoder must be used to get the correct data ' but this is best done over a full sequence of characters, so just store this one in a buffer. buffer.Append(symbol) Else ' These characters are not converted to percent encoding by UrlEncode. UrlEncodeAppendClear(result, buffer).AppendFormat(Globalization.CultureInfo.InvariantCulture, "%{0:X2}", AscW(symbol)) End If Next UrlEncodeAppendClear(result, buffer) Return result.ToString() End Function Private Shared percentHex As New RegularExpressions.Regex("(%[0-9a-f][0-9a-f])", RegularExpressions.RegexOptions.Compiled) ''' <summary> ''' Actually performs the UrlEncode on any buffered characters, ensuring the resulting percents are uppercased and clears the buffer. ''' </summary> ''' ''' <param name="Result">The result of the UrlEncode is appended here.</param> ''' <param name="Buffer">The current buffer of characters to be encoded. Cleared on return.</param> ''' ''' <returns>The <paramref name="Result">Result</paramref>, as passed in, with the UrlEncoding of the <paramref name="Buffer">buffer of characters</paramref> appended.</returns> ''' ''' <remarks>Would like to be an extension method.</remarks> ''' ''' <revisionhistory> ''' 140313 MEH Created. ''' </revisionhistory> Private Shared Function UrlEncodeAppendClear(ByVal Result As StringBuilder, ByVal Buffer As StringBuilder) As StringBuilder If Buffer.Length > 0 Then Result.Append(percentHex.Replace(HttpUtility.UrlEncode(Buffer.ToString), Function(c) c.Value.ToUpperInvariant())) Buffer.Length = 0 End If Return Result End Function版本（对于.NET 2.0 / 3.5）的VB.NET转换：

{{1}}

.net UrlEncode - 小写问题

7 个答案: