Use Struts 2 along with Spring, and use Hibernate as DAO and ORM.

1. Struts 2 + Spring Aug 19th, 2009 Bryan Hsueh

4. Spring Modules Core Struts or Spring MVC Context Web AOP JMS JCA DAO ORM (Hibernate) JMX … … DB browser

5. Model-View-Controller Controller Model DB Business Service Object Front Controller Servlet Controller View JSP Browser Server API getXyz()

7. Struts 2 DB * One way of interpreting Struts 2 MVC. Why put Action in Model?

9. In struts.xml <action name=“user_add&quot; class=&quot; xxx.User &quot; method=&quot; add &quot;> <result>/jsp/user.jsp</result> <result name=“error”>/jsp/error.jsp</result> </action> <action name=“user_delete&quot; class=&quot; xxx.User &quot; method=“ update &quot;> <result>/jsp/user.jsp</result> </action> <action name=“user_login&quot; class=&quot; xxx.User &quot; method=“ login &quot;> <result name=“ success ”>/jsp/user.jsp</result> <result name=“ error ”>error.jsp</result> </action> <action name=“user_ * &quot; class=&quot; xxx.User &quot; method=“ {1} &quot;> <result>/jsp/user.jsp</result> <result name=“error”>/jsp/error.jsp</result> </action>

11. ActionSupport class (case B) public class UserAction extends ActionSupport { private User user; private String name; private String gender; private Date birth; public String getName() { return name; } void setName(String s) { name = s; } public Date getBirth() { ... } void setBirth(Date d) { ... } public String getGender() { ... } void setGender(String s) { ... } public class ActionSupport implements Action , Validateable , ValidationAware , TextProvider , LocaleProvider , Serializable public String add () { user.add(); .... return “success”; } public String update () { user.update(); .... return “success”; } public String login () { user.login(); .... if (ok) return “success”; else return “error”; } } Decouple business service from web layer

12. In struts.xml <action name=“user_add&quot; class=&quot; xxx.UserAction &quot; method=&quot; add &quot;> <result>/jsp/user.jsp</result> <result name=“ error ”>/jsp/error.jsp</result> </action> <action name=“user_delete&quot; class=&quot; xxx.UserAction &quot; method=“ update &quot;> <result>/jsp/user.jsp</result> </action> <action name=“user_login&quot; class=&quot; xxx.UserAction &quot; method=“ login &quot;> <result name=“ success ”>/jsp/user.jsp</result> <result name=“ error ”>error.jsp</result> </action> <action name=“user_ * &quot; class=&quot; xxx.UserAction &quot; method=“ {1} &quot;> <result>/jsp/user.jsp</result> <result name=“error”>/jsp/error.jsp</result> </action>

13. Service and DTO (case C) public class UserAction extends ActionSupport { private AccountService accountService; private User user; public AccountService getAccountServic () { return user; } void setAccountServic (AccountService s) { accountService = s; } public User getUser () { return user; } void setUser (User u) { user = u; } public String add () { accountService.add(user); .... return “success”; } public String update () { accountService.update(user); .... return “success”; } public String login () { accountService.login(user); .... if (ok) return “success”; else return “error”; } } Use Business Service and DTO (Data Transfer Object)

15. Web and Business Layers DB Business Service Object Web Service, XML-RPC, etc. * Business layer should not tie to web layer framework. Spring MVC Struts