報錯資訊
java.lang.NullPointerException
at com.dao.impl.UserDAOImpl.regist(UserDAOImpl.java:24)
at com.service.impl.UsersServiceImpl.regist(UsersServiceImpl.java:14)
at com.servlet.UsersRegistServlet.doGet(UsersRegistServlet.java:43)
at com.servlet.UsersRegistServlet.doPost(UsersRegistServlet.java:61)



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