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add methods

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This commit is contained in:
Looly 2022-05-16 09:58:25 +08:00
parent d52470e8e7
commit 4ab19a303c
1 changed files with 18 additions and 5 deletions
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17
hutool-core/src/main/java/cn/hutool/core/util/ByteUtil.java
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@ -77,11 +77,24 @@ public class ByteUtil {
* @return short值
*/
public static short bytesToShort(final byte[] bytes, final ByteOrder byteOrder) {
return bytesToShort(bytes, 0, byteOrder);
}
/**
* byte数组转short<br>
* 自定义端序
*
* @param bytes byte数组，长度必须大于2
* @param start 开始位置
* @param byteOrder 端序
* @return short值
*/
public static short bytesToShort(final byte[] bytes, final int start, final ByteOrder byteOrder) {
if (ByteOrder.LITTLE_ENDIAN == byteOrder) {
//小端模式，数据的高字节保存在内存的高地址中，而数据的低字节保存在内存的低地址中
return (short) (bytes[0] & 0xff | (bytes[1] & 0xff) << Byte.SIZE);
return (short) (bytes[start] & 0xff | (bytes[start + 1] & 0xff) << Byte.SIZE);
} else {
return (short) (bytes[1] & 0xff | (bytes[0] & 0xff) << Byte.SIZE);
return (short) (bytes[start + 1] & 0xff | (bytes[start] & 0xff) << Byte.SIZE);
}
}