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import java.util.Arrays;
public class ToHex {
public static void main(String[] args) {
//字节数组
byte[] bs = new byte[]{105,111,46,105,111,117,116,105,108,13,10,83,85,67,67,69,83,83,13,10,103,111,108,97,110,103,13,10,49,50,51,52,53,53,13,10,114,111,111,116,13,10,115,100,97,49,50,51,52};
System.out.println("原始数据:"+Arrays.toString(bs));
StringBuffer stringBuffer = new StringBuffer();
//字节数组转十六进制
for (int i = 0; i < bs.length; i++) {
//%X 十六进制大写,%x 十六进制小写
String format = String.format("%02X", bs[i]);
//if (format.length() == 1) {
// stringBuffer.append("0");
//}
stringBuffer.append(format);
}
System.out.println("转十六进制:"+stringBuffer.toString());
byte[] bs1 = new byte[stringBuffer.length() / 2];
for (int i = 0; i < bs1.length; i++) {
//截取
String str = stringBuffer.subSequence(i*2,(i+1)*2).toString();
//转换为byte
bs1[i] = Byte.parseByte(str,16);
}
System.out.println("十六进制转字节数组:"+Arrays.toString(bs1));
System.out.println("结果对比:"+Arrays.toString(bs).equals(Arrays.toString(bs1)));
}
}