Exception in thread "main" java.lang.ExceptionInInitializerError
at cn.edu.sict.adressbook.dao.ContactDao.insert(ContactDao.java:23)
at cn.edu.sict.adressbook.frame.MainFrame.showAddressMenu(MainFrame.java:115)
at cn.edu.sict.adressbook.frame.MainFrame.main(MainFrame.java:33)
Caused by: java.lang.NullPointerException: inStream parameter is null
at java.base/java.util.Objects.requireNonNull(Objects.java:246)
at java.base/java.util.Properties.load(Properties.java:403)
at cn.edu.sict.adressbook.dao.BaseDao.<clinit>(BaseDao.java:21)
... 3 more
一直是连接不上，路径也没错啊。蹲......大佬留步请指教