我有一个原始字节数组，我需要将其标记为 Java 中的字节数组列表。通过以下方法声明可以更好地解释。
public static List<byte[]> splitMessage(byte[] rawByte, String tokenDelimiter)
示例运行。
示例运行 1:
原始字节
byte[] rawBytes = new byte[]{72,118,121,49,85,118,97,113,111,124,44,124,49,48,43,57,48,36,63,49,66,70,22,18,124,44,124,23,27,25,54,24,24,34,44,57,69,66,49,47,66,16,39,35,32,36,30,50,63,124,44,124,16,18,24,64,4,94,124,44,124,19,31,42,55,66,46,34,62,34,37};
tokenDelimiter 是 |,|(即 124,44,124)
因此返回的列表如下:
Token 1: 72,118,121,49,85,118,97,113,111
Token 2: 49,48,43,57,48,36,63,49,66,70,22,18
Token 3: 23,27,25,54,24,24,34,44,57,69,66,49,47,66,16,39,35,32,36,30,50,63,
Token 4: 16,18,24,64,4,94
Token 5: 19,31,42,55,66,46,34,62,34,37
示例运行 2:
byte[] rawBytes = new byte[]{72,118,121,49,85,118,97,113,111,124,44,124,49,48,43,57,48,36,63,49,66,70,22,18,124,44,124,124,44,124,23,27,25,54,24,24,34,44,57,69,66,49,47,66,16,39,35,32,36,30,50,63,124,44,124,16,18,24,64,4,94,124,44,124,19,31,42,55,66,46,34,62,34,37,124,44,124,124,44,124};
tokenDelimiter 是 |,|(即 124,44,124)
Token 1: 72,118,121,49,85,118,97,113,111
Token 2: 49,48,43,57,48,36,63,49,66,70,22,18
Token 3: <Empty>
Token 3: 23,27,25,54,24,24,34,44,57,69,66,49,47,66,16,39,35,32,36,30,50,63,
Token 4: 16,18,24,64,4,94
Token 5: 19,31,42,55,66,46,34,62,34,37
Token 6: <Empty>
Token 7: <Empty>
我能够通过以下代码片段运行示例。但是在第二个中坚持使用标签。
public static List<byte[]> splitMessageSept19(byte[] rawByte, String tokenDelimiter) throws UnsupportedEncodingException
{
List<byte[]> tokens = new ArrayList<byte[]>();
final byte[] byteArray = tokenDelimiter.getBytes("UTF-8");
final byte byteDelimitorFirstByte = byteArray[0];
int bytenum =0 ;
int lastIndex = 0;
int storIterator =0;
for ( int iterator = 0 ; iterator <= rawByte.length ; iterator++ )
{
if (iterator == rawByte.length || rawByte[iterator] == byteDelimitorFirstByte)
{
storIterator = iterator;
if ( iterator != rawByte.length )
{
for ( int i=0 ; i < byteArray.length ; i++ )
{
if ( rawByte[iterator] == byteArray[i] )
{
iterator++ ;
continue;
}
else
{
break;
}
}
}
byte[] byteArrayExtracted = new byte[storIterator - lastIndex];
System.arraycopy(rawByte, lastIndex, byteArrayExtracted, 0,
storIterator - lastIndex);
lastIndex = iterator ;
tokens.add(byteArrayExtracted);
byteArrayExtracted = null;
}
}
for ( byte[] bytetoken : tokens )
{
System.out.println("Token received is: " + new String(bytetoken, "UTF-8"));
}
return tokens;
}
有人遇到过类似的数组标记化问题吗？请建议是否有其他方法来标记数组。
请注意:我不想将字节流转换为 String，以 String 格式标记并转换回字节。它可能有编码问题。
最佳答案
如果您使用 ISO-8859-1，则字节将按原样保留。
private static final Charset ISO_8859_1 = Charset.forName("ISO-8859-1");
public static List<byte[]> splitMessageSept19(byte[] rawByte, String tokenDelimiter) {
Pattern pattern = Pattern.compile(tokenDelimiter, Pattern.LITERAL);
String[] parts = pattern.split(new String(rawByte, ISO_8859_1), -1);
List<byte[]> ret = new ArrayList<byte[]>();
for (String part : parts)
ret.add(part.getBytes(ISO_8859_1));
return ret;
}
public static void main(String... args) {
StringBuilder sb = new StringBuilder();
for(int i=0;i<256;i++)
sb.append((char) i);
byte[] bytes = sb.toString().getBytes(ISO_8859_1);
List<byte[]> list = splitMessageSept19(bytes, ",");
for (byte[] b : list)
System.out.println(Arrays.toString(b));
}
打印
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43] [45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69 , 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94 , 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119 , 120, 121, 122, 123, 124, 125, 126, 127, -128, -127, -126, -125, -124, -123, -122, -121, -120, -119, -118, -117, -116, -115, -114, -113, -112, -111, -110, -109, -108, -107, -106, -105, -104, -103, -102, -101 , -100, -99, -98, -97, -96, -95, -94, -93, -92, -91, -90, -89, -88, -87, -86, -85, - 84, -83, -82, -81, -80, -79, -78, -77, -76, -75, -74, -73, -72, -71, -70, -69, -68, -67, -66, -65, -64, -63, -62, -61, -60, -59, -58, -57, -56, -55, -54, -53, -52, -51 , -50, -49, -48, -47, -46, -45, -44, -43, -42, -41, -40, -39, -38, -37, -36, -35, - 34, -33, -32, -31, -30, -29, -28, -27, -26, -25, -24, -23, -22, -21, -20, -19, -18, -17, -16, -15, -14, -13, -12, -11, -10, -9, -8, -7, -6, -5, -4, -3, -2, -1]
打电话
byte[] rawBytes = new byte[]{72,118,121,49,85,118,97,113,111,124,44,124,49,48,43,57,48,36,63,49,66,70,22,18,124,44,124,124,44,124,23,27,25,54,24,24,34,44,57,69,66,49,47,66,16,39,35,32,36,30,50,63,124,44,124,16,18,24,64,4,94,124,44,124,19,31,42,55,66,46,34,62,34,37,124,44,124,124,44,124};
List<byte[]> list = splitMessageSept19(rawBytes, "|,|");
产生
[72, 118, 121, 49, 85, 118, 97, 113, 111]
[49, 48, 43, 57, 48, 36, 63, 49, 66, 70, 22, 18]
[]
[23, 27, 25, 54, 24, 24, 34, 44, 57, 69, 66, 49, 47, 66, 16, 39, 35, 32, 36, 30, 50, 63]
[16, 18, 24, 64, 4, 94]
[19, 31, 42, 55, 66, 46, 34, 62, 34, 37]
[]
[]
关于java - 标记化字节数组，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/12492768/