java - 将字符串数组转换为字节数组(java)

Question

我将此字节数组保存为数据库中的字符串:

public static final byte[] NEW_KEY_2KTDES = {
    (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00,
    (byte)0x00, (byte)0x00, (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff,
    (byte)0xff
};

现在我想从我的数据库获取这个字符串并将其转换为字节数组(如上所示)。我尝试这样做:

String[] str_pass = obj.getString("password").split(" "); 
byte[] NEW_KEY = convertToBytes(str_pass);

但是这个convertToBytes函数就是问题所在:

private static byte[] convertToBytes(String[] strings) {
    byte[] data = new byte[strings.length];
    for (int i = 0; i < strings.length; i++) {
        String string = strings[i];
        data[i] = string.getBytes(Charset.defaultCharset()); // you can chose charset
    }
    return data;
}

有更好的方法吗？

Answer 1

字节数组只是一个字符串，因此您应该使用二维字节数组

private static byte[][] convertToBytes(String[] strings) {
    byte[][] data = new byte[strings.length][];
    for (int i = 0; i < strings.length; i++) {
        String string = strings[i];
        data[i] = string.getBytes(Charset.defaultCharset()); // you can chose charset
    }
    return data;
}