captcha:
   generate random code and random image.

domain:
   1.database mapping xml
   2.POJO java classes generated by Hibernate tool.
   3.Test cases used to test mapping logic

repository:
   1.DAO interface
   2.Hibernate DAO implementation
   3.Test cases for DAO, use memory mode HSQL db test the DAO, don't need server

service:
   1.Business service interface definition
   2.Implementation.
   3.Test cases, use spring inject DAO, don't use DAO mock.

validate:
   1.Dwr general validation class
   2.test cases for Dwr back end validate class

rspi:
   1.Use RESTlet for RESTful Web Service.
   2.Test case, need startup Java Application Server

user:
   1.jsp, controller, form object ,form validation classes and static html,css,js file.
   2.controller, form object,form validation test cases
   3.webpage test cases.