如何将 UTF-8 字节 [] 转换为字符串?

我有一个byte[]数组,该数组是从一个碰巧包含UTF-8的文件加载的。在一些调试代码中,我需要将其转换为字符串。是否有一个班轮可以做到这一点?

幕后 ,它应该只是一个分配和一个内存拷贝 ,因此即使未实现它也应该是可能的。

答案

string result = System.Text.Encoding.UTF8.GetString(byteArray);
byte[] bytes = { 130, 200, 234, 23 }; // A byte array contains non-ASCII (or non-readable) characters

string s1 = Encoding.UTF8.GetString(bytes); // ���
byte[] decBytes1 = Encoding.UTF8.GetBytes(s1);  // decBytes1.Length == 10 !!
// decBytes1 not same as bytes
// Using UTF-8 or other Encoding object will get similar results

string s2 = BitConverter.ToString(bytes);   // 82-C8-EA-17
String[] tempAry = s2.Split('-');
byte[] decBytes2 = new byte[tempAry.Length];
for (int i = 0; i < tempAry.Length; i++)
    decBytes2[i] = Convert.ToByte(tempAry[i], 16);
// decBytes2 same as bytes

string s3 = Convert.ToBase64String(bytes);  // gsjqFw==
byte[] decByte3 = Convert.FromBase64String(s3);
// decByte3 same as bytes

string s4 = HttpServerUtility.UrlTokenEncode(bytes);    // gsjqFw2
byte[] decBytes4 = HttpServerUtility.UrlTokenDecode(s4);
// decBytes4 same as bytes
static string BytesToStringConverted(byte[] bytes)
{
    using (var stream = new MemoryStream(bytes))
    {
        using (var streamReader = new StreamReader(stream))
        {
            return streamReader.ReadToEnd();
        }
    }
}
public static string ConvertByteToString(this byte[] source)
{
    return source != null ? System.Text.Encoding.UTF8.GetString(source) : null;
}
string result = input.ConvertByteToString();
private string ToString(byte[] bytes)
{
    string response = string.Empty;

    foreach (byte b in bytes)
        response += (Char)b;

    return response;
}
public static class Ext {

    public static string ToHexString(this byte[] hex)
    {
        if (hex == null) return null;
        if (hex.Length == 0) return string.Empty;

        var s = new StringBuilder();
        foreach (byte b in hex) {
            s.Append(b.ToString("x2"));
        }
        return s.ToString();
    }

    public static byte[] ToHexBytes(this string hex)
    {
        if (hex == null) return null;
        if (hex.Length == 0) return new byte[0];

        int l = hex.Length / 2;
        var b = new byte[l];
        for (int i = 0; i < l; ++i) {
            b[i] = Convert.ToByte(hex.Substring(i * 2, 2), 16);
        }
        return b;
    }

    public static bool EqualsTo(this byte[] bytes, byte[] bytesToCompare)
    {
        if (bytes == null && bytesToCompare == null) return true; // ?
        if (bytes == null || bytesToCompare == null) return false;
        if (object.ReferenceEquals(bytes, bytesToCompare)) return true;

        if (bytes.Length != bytesToCompare.Length) return false;

        for (int i = 0; i < bytes.Length; ++i) {
            if (bytes[i] != bytesToCompare[i]) return false;
        }
        return true;
    }

}
ByteConverter = new UnicodeEncoding();
string stringDataForEncoding = "My Secret Data!";
byte[] dataEncoded = ByteConverter.GetBytes(stringDataForEncoding);

Console.WriteLine("Data after decoding: {0}", ByteConverter.GetString(dataEncoded));
var byteStr = Convert.ToBase64String(bytes);
String filename = new String(byteArrFilename.TakeWhile(x => x != 0)
                              .Select(x => x < 128 ? (Char)x : '?').ToArray());
var convertedString = BitConverter.ToString(byteAttay);