Source/plt-web/plt-web-parent/plt-web/src/main/java/com/vci/web/util/Func.java

@@ -40,6 +40,60 @@
public class Func {

    /**
     * 通常用于将主键oid转换成8位唯一hash码值
     * @return
     */
    public static String oidEnHash(String oid){
        UUID originalUUID = UUID.fromString(oid);
        // 使用Base64编码将原始UUID转换为较短的字符串
        String base64String = Base64.getUrlEncoder().withoutPadding().encodeToString(new byte[] {
                (byte)(originalUUID.getMostSignificantBits()>>>56),
                (byte)(originalUUID.getMostSignificantBits()>>>48),
                (byte)(originalUUID.getMostSignificantBits()>>>40),
                (byte)(originalUUID.getMostSignificantBits()>>>32),
                (byte)(originalUUID.getMostSignificantBits()>>>24),
                (byte)(originalUUID.getMostSignificantBits()>>>16),
                (byte)(originalUUID.getMostSignificantBits()>>>8),
                (byte)(originalUUID.getMostSignificantBits()),
                (byte)(originalUUID.getLeastSignificantBits()>>>56),
                (byte)(originalUUID.getLeastSignificantBits()>>>48),
                (byte)(originalUUID.getLeastSignificantBits()>>>40),
                (byte)(originalUUID.getLeastSignificantBits()>>>32),
                (byte)(originalUUID.getLeastSignificantBits()>>>24),
                (byte)(originalUUID.getLeastSignificantBits()>>>16),
                (byte)(originalUUID.getLeastSignificantBits()>>>8),
                (byte)(originalUUID.getLeastSignificantBits())});
        return base64String;
    }

    /**
     * 通常用于将主键oid转换成的8位唯一hash码，反转为oid
     * @param base64String
     * @return
     */
    public static String oidDeHash(String base64String){
        // 反推回原始的UUID字符串
        byte[] bytes = Base64.getUrlDecoder().decode(base64String);
        UUID reconstructedUUID = new UUID(((long)(bytes[0] & 0xff) << 56)
                | ((long)(bytes[1] & 0xff) << 48)
                | ((long)(bytes[2] & 0xff) << 40)
                | ((long)(bytes[3] & 0xff) << 32)
                | ((long)(bytes[4] & 0xff) << 24)
                | ((long)(bytes[5] & 0xff) << 16)
                | ((long)(bytes[6] & 0xff) << 8)
                | (bytes[7] & 0xff),
                ((long)(bytes[8] & 0xff) << 56)
                        | ((long)(bytes[9] & 0xff) << 48)
                        | ((long)(bytes[10] & 0xff) << 40)
                        | ((long)(bytes[11] & 0xff) << 32)
                        | ((long)(bytes[12] & 0xff) << 24)
                        | ((long)(bytes[13] & 0xff) << 16)
                        | ((long)(bytes[14] & 0xff) << 8)
                        | (bytes[15] & 0xff));
        return reconstructedUUID.toString().toUpperCase(Locale.ROOT);
    }

    /**
     * 断言，必须不能为 null
     * <blockquote><pre>
     * public Foo(Bar bar) {