DAO模式设计
...........\DAOFactory.java
...........\DatabaseConnection.java
...........\Emp.java
...........\EmpDAOImpl.java
...........\EmpDAOProxy.java
...........\emp_insert.jsp
...........\emp_insert_do.jsp
...........\emp_list.jsp
...........\IEmpDAO.java
...........\TestDAOInsert.java
...........\TestDAOSelect.java
...........\数据库创建脚本.sql