java int转byte数组
int 转 byte[] 低字节在前(低字节序)
1 public static byte[] toLH(int n) { 2 byte[] b = new byte[4]; 3 b[0] = (byte) (n & 0xff); 4 b[1] = (byte) (n >> 8 & 0xff); 5 b[2] = (byte) (n >> 16 & 0xff); 6 b[3] = (byte) (n >> 24 & 0xff); 7 return b; 8 }
int 转 byte[] 高字节在前(高字节序)
1 public static byte[] toHH(int n) { 2 byte[] b = new byte[4]; 3 b[3] = (byte) (n & 0xff); 4 b[2] = (byte) (n >> 8 & 0xff); 5 b[1] = (byte) (n >> 16 & 0xff); 6 b[0] = (byte) (n >> 24 & 0xff); 7 return b; 8 }
byte[] 转 int 低字节在前(低字节序)
1 public int toInt(byte[] b){ 2 int res = 0; 3 for(int i=0;i<b.length;i++){ 4 res += (b[i] & 0xff) << (i*8); 5 } 6 return res; 7 }
byte[] 转 int 高字节在前(高字节序)
1 public static int toInt(byte[] b){ 2 int res = 0; 3 for(int i=0;i<b.length;i++){ 4 res += (b[i] & 0xff) << ((3-i)*8); 5 } 6 return res; 7 }