查找的时候报错cannot access class sun.net.util.IPAddressUtil

[Leonardo-Zhou]

        City db = new City("ip.ipdb");
        System.out.println(Arrays.toString(db.find("1.1.1.1", "CN")));

会报错
Exception in thread "main" java.lang.IllegalAccessError: class net.ipip.ipdb.Reader (in unnamed module @0x5479e3f) cannot access class sun.net.util.IPAddressUtil (in module java.base) because module java.base does not export sun.net.util to unnamed module @0x5479e3f
at net.ipip.ipdb.Reader.find(Reader.java:100)
at net.ipip.ipdb.City.find(City.java:36)
at org.example.Main.main(Main.java:23)