大小端模式的int和byte相互转换

   今天在这里给大家做个int和byte类型转换的总结。直接附上代码。这年头就是要这么干脆。

/**
 * 以大端模式将int转成byte[]
 */
public static byte[] intToBytesBig(int value) {
    byte[] src = new byte[4];
    src[0] = (byte) ((value >> 24) & 0xFF);
    src[1] = (byte) ((value >> 16) & 0xFF);
    src[2] = (byte) ((value >> 8) & 0xFF);
    src[3] = (byte) (value & 0xFF);
    return src;
}

/**
 * 以小端模式将int转成byte[]
 *
 * @param value
 * @return
 */
public static byte[] intToBytesLittle(int value) {
    byte[] src = new byte[4];
    src[3] = (byte) ((value >> 24) & 0xFF);
    src[2] = (byte) ((value >> 16) & 0xFF);
    src[1] = (byte) ((value >> 8) & 0xFF);
    src[0] = (byte) (value & 0xFF);
    return src;
}

/**
 * 以大端模式将byte[]转成int
 */
public static int bytesToIntBig(byte[] src, int offset) {
    int value;
    value = (int) (((src[offset] & 0xFF) << 24)
            | ((src[offset + 1] & 0xFF) << 16)
            | ((src[offset + 2] & 0xFF) << 8)
            | (src[offset + 3] & 0xFF));
    return value;
}

/**
 * 以小端模式将byte[]转成int
 */
public static int bytesToIntLittle(byte[] src, int offset) {
    int value;
    value = (int) ((src[offset] & 0xFF)
            | ((src[offset + 1] & 0xFF) << 8)
            | ((src[offset + 2] & 0xFF) << 16)
            | ((src[offset + 3] & 0xFF) << 24));
    return value;
}