v3.0
done:
1.create member and insert into DB.(2013/06/25~2013/06/28)
2.catch exception detaily.
3.enquire member by muti contitions.
4.update member.
5.delete member.
6.Refining the construction of create/enquire/update/delete.
7.update environment.(2013/06/30)
8.move methods into com.wm.jar.
9.add com.wm.jar.(put it in PATH)(2013/07/01)
10.remove com.wm.jar and move methods into JavaBean.
11.remove JavaBean and add try creating member by DAO.(2013/07/02)
12.remove JavaBean and replace with DAO.
13.update environment in xp.(2013/07/18)
14.using ${} to display data after enquiry.(2013/07/19)
15.Refining the construction of enquiry.
16.Rebuilding the construction of enquire/delete/create/update(2013/07/21)
17.Add request and session listener to hr.(2013/07/22)
18.using servlet in enquiry to enquire member list and search member detail.
19.move common codes into 'all' folder,as a result,reduce codes in /create/enquire/delete/update as much as possible.(2013/07/27)

undone:
1.validate user input in create.jsp by JavaScript.(2013/06/25~2013/06/28)
2.validate user data in create_check.jsp.
3.validate user input in enquire.jsp by JavaScript.
4.validate user data in enquire_check.jsp.
5.validate user input in enquire.jsp by JavaScript.
6.validate user data(especially date) in update_detail.jsp.
7.validate user input in input pages(create/delete/update/enquire).