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55 lines
1.2 KiB
55 lines
1.2 KiB
5 years ago
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package ${domain}.frame;
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/**
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* BytesUtil - 字节数组工具类
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*
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* @author wangbing
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* @version 0.0.1
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* @since 2017-01-01
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*/
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public class BytesUtil {
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private static final char[] HEXES = {
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'0', '1', '2', '3',
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'4', '5', '6', '7',
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'8', '9', 'a', 'b',
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'c', 'd', 'e', 'f'
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};
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/**
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* byte数组转16进制字符串
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*/
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public static String bytes2Hex(byte[] bytes) {
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if (bytes == null || bytes.length == 0) {
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return null;
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}
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StringBuilder hex = new StringBuilder();
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for (byte b : bytes) {
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hex.append(HEXES[(b >> 4) & 0x0F]);
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hex.append(HEXES[b & 0x0F]);
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}
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return hex.toString();
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}
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/**
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* 16进制字符串转byte数组
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*/
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public static byte[] hex2Bytes(String hex) {
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if (hex == null || hex.length() == 0) {
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return null;
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}
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char[] hexChars = hex.toCharArray();
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byte[] bytes = new byte[hexChars.length / 2];
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for (int i = 0; i < bytes.length; i++) {
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bytes[i] = (byte) Integer.parseInt("" + hexChars[i * 2] + hexChars[i * 2 + 1], 16);
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}
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return bytes;
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}
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}
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