MVS設計模式+DAO設計模式.

1.項目結構.

    ->log_on.jsp

    ->welcomepage.jsp

    ->error.jsp

    ->handleservlet.java

    ->dao

        ->suser.java (vo)

        ->daofactory.java

        ->iuserdao.java

        ->userdaoimpl.java

        ->databaseconnection.java