C# 通过 TcpClient (byte[]) 发送包含特殊字符的字符串
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Sending a string containing special characters through a TcpClient (byte[])
提问by Philippe Paré
I'm trying to send a string containing special characters through a TcpClient (byte[]). Here's an example:
我正在尝试通过 TcpClient (byte[]) 发送一个包含特殊字符的字符串。下面是一个例子：
- Client enters "amé" in a textbox
- Client converts string to byte[] using a certain encoding (I've tried all the predefined ones plus some like "iso-8859-1")
- Client sends byte[] through TCP
- Server receives and outputs the string reconverted with the same encoding (to a listbox)
- 客户在文本框中输入“amé”
- 客户端使用某种编码将字符串转换为字节 [] （我已经尝试了所有预定义的编码以及诸如“iso-8859-1”之类的编码）
- 客户端通过 TCP 发送 byte[]
- 服务器接收并输出使用相同编码重新转换的字符串（到列表框）
Edit :
编辑 ：
I forgot to mention that the resulting string was "am?".
我忘了提到结果字符串是“am？”。
Edit-2 (as requested, here's some code):
Edit-2（根据要求，这里有一些代码）：
@DJKRAZE here's a bit of code :
@DJKRAZE 这里有一些代码：
byte[] buffer = Encoding.ASCII.GetBytes("amé");
(TcpClient)server.Client.Send(buffer);
On the server side:
在服务器端：
byte[] buffer = new byte[1024];
Client.Recieve(buffer);
string message = Encoding.ASCII.GetString(buffer);
ListBox1.Items.Add(message);
The string that appears in the listbox is "am?"
列表框中出现的字符串是“am?”
=== Solution ===
=== 解决方案 ===
Encoding encoding = Encoding.GetEncoding("iso-8859-1");
byte[] message = encoding.GetBytes("babé");
Update:
更新：
Simply using Encoding.Utf8.GetBytes("ééé");works like a charm.
简单地使用Encoding.Utf8.GetBytes("ééé");作品就像一个魅力。
采纳答案by Philippe Paré
Never too late to answer a question I think, hope someone will find answers here.
回答我认为的问题永远不会太晚，希望有人能在这里找到答案。
C# uses 16 bit chars, and ASCII truncates them to 8 bit, to fit in a byte. After some research, I found UTF-8 to be the best encoding for special characters.
C# 使用 16 位字符，ASCII 将它们截断为 8 位，以适应一个字节。经过一番研究，我发现 UTF-8 是特殊字符的最佳编码。
//data to send via TCP or any stream/file
byte[] string_to_send = UTF8Encoding.UTF8.GetBytes("amé");
//when receiving, pass the array in this to get the string back
string received_string = UTF8Encoding.UTF8.GetString(message_to_send);
回答by Mohsen Heydari
Your question and your error is not clear to me but using Base64Stringmay solve the problem
Something like this
你的问题，你的错误我也不清楚，但使用Base64String可以解决这个问题
大概是这样
static public string EncodeTo64(string toEncode)
{
byte[] toEncodeAsBytes
= System.Text.ASCIIEncoding.ASCII.GetBytes(toEncode);
string returnValue
= System.Convert.ToBase64String(toEncodeAsBytes);
return returnValue;
}
static public string DecodeFrom64(string encodedData)
{
byte[] encodedDataAsBytes
= System.Convert.FromBase64String(encodedData);
string returnValue =
System.Text.ASCIIEncoding.ASCII.GetString(encodedDataAsBytes);
return returnValue;
}
回答by Corey
Your problem appears to be the Encoding.ASCII.GetBytes("amé");and Encoding.ASCII.GetString(buffer);calls, as hinted at by '500 - Internal Server Error' in his comments.
您的问题似乎是Encoding.ASCII.GetBytes("amé");和Encoding.ASCII.GetString(buffer);调用，正如他的评论中的“500 - 内部服务器错误”所暗示的那样。
The écharacter is a multi-byte character which is encoded in UTF-8 with the byte sequence C3 A9. When you use the Encoding.ASCIIclass to encode and decode, the écharacter is converted to a question mark since it does not have a direct ASCII encoding. This is true of any character that has no direct coding in ASCII.
该é字符是一个多字节字符，以 UTF-8 编码，字节序列为C3 A9。当您使用Encoding.ASCII该类进行编码和解码时，该é字符将转换为问号，因为它没有直接的 ASCII 编码。这适用于任何没有直接用 ASCII 编码的字符。
Change your code to use Encoding.UTF8.GetBytes()and Encoding.UTF8.GetString()and it should work for you.
修改代码以使用Encoding.UTF8.GetBytes()和Encoding.UTF8.GetString()它应该为你工作。
