我有一个字节[]数组，从一个文件加载，我碰巧知道包含UTF-8。
在一些调试代码中，我需要将其转换为字符串。是否有一个单行程序可以做到这一点?
在表面之下，它应该只是一个分配和一个memcopy，所以即使没有实现，也应该是可能的。
当前回答
我在这篇文章中看到了一些答案，这可能被认为是完整的基础知识，因为我在c#编程中有几种方法来解决相同的问题。唯一需要考虑的是纯UTF-8和带有BOM的UTF-8之间的区别。
Last week, at my job, I needed to develop one functionality that outputs CSV files with a BOM and other CSV files with pure UTF-8 (without a BOM). Each CSV file encoding type will be consumed by different non-standardized APIs. One API reads UTF-8 with a BOM and the other API reads without a BOM. I needed to research the references about this concept, reading the "What's the difference between UTF-8 and UTF-8 without BOM?" Stack Overflow question, and the Wikipedia article "Byte order mark" to build my approach.
最后，我的c#编程的UTF-8编码类型(BOM和纯)需要类似于下面的例子:
// For UTF-8 with BOM, equals shared by Zanoni (at top)
string result = System.Text.Encoding.UTF8.GetString(byteArray);
//for Pure UTF-8 (without B.O.M.)
string result = (new UTF8Encoding(false)).GetString(byteArray);
其他回答
string result = ASCIIEncoding.UTF8.GetString(byteArray);
还有一个类UnicodeEncoding，使用起来非常简单:
ByteConverter = new UnicodeEncoding();
string stringDataForEncoding = "My Secret Data!";
byte[] dataEncoded = ByteConverter.GetBytes(stringDataForEncoding);
Console.WriteLine("Data after decoding: {0}", ByteConverter.GetString(dataEncoded));
这是一个不需要编码的结果。我在我的网络类中使用它，并以字符串的形式发送二进制对象。
public static byte[] String2ByteArray(string str)
{
char[] chars = str.ToArray();
byte[] bytes = new byte[chars.Length * 2];
for (int i = 0; i < chars.Length; i++)
Array.Copy(BitConverter.GetBytes(chars[i]), 0, bytes, i * 2, 2);
return bytes;
}
public static string ByteArray2String(byte[] bytes)
{
char[] chars = new char[bytes.Length / 2];
for (int i = 0; i < chars.Length; i++)
chars[i] = BitConverter.ToChar(bytes, i * 2);
return new string(chars);
}
string result = System.Text.Encoding.UTF8.GetString(byteArray);
另外:
var byteStr = Convert.ToBase64String(bytes);
