1. Struts1 Apache Struts Dr Jim Briggs

2. Struts2 What is Struts? Struts is an open source framework for building Java web applications Supports MVC/Model 2 It is an Apache project (struts.apache.org) Invented by Craig McClanahan

3. Struts3 What does Struts do? Framework assists in building the Controller component of a webapp Also helps with the View (via some JSP taglibs) Assumes you can handle the Model! –Usually a set of JavaBeans works best

4. Struts4 What does a Struts app consist of? Key classes –ActionServlet (almost never changed) –ActionForm –Action –ActionErrors –ActionForward –ActionMapping struts-config.xml

5. Struts5 ActionForm Represents data on an HTML form Either implement as: –a JavaBean that extends org.apache.struts.action.ActionForm –a DynaActionForm where the properties are defined in struts-config.xml Typically, one ActionForm for each type of HTML form in your application

6. Struts6 Action Deals with a specific HTTP request Extend org.apache.struts.action.Action Implement your code in method: public ActionForward execute (ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws ExceptionActionForwardActionMapping ActionForm Typically one action for each function of your app

7. Struts7 ActionErrors Object that you use to store the error messages from your app Lots of support in the taglibs for outputting error messages –e.g. tag

8. Struts8 ActionForward Object returned by an Action Identifies what component is to be executed next Usually a JSP page that displays the response Often an Action will return one of 2 or more ActionForwards –One for "success" – JSP that displays results –One for "failure" – JSP that displays error messages

9. Struts9 ActionMapping The "junction box" of a Struts webapp Defines relationship between ActionForms, Actions and ActionForwards Defined in the struts-config.xml file Easier to change the configuration file than change the code

10. Struts10 Struts taglibs Make developing the View (and integrating it with the Controller) easier Three main libraries: –bean –html –logic Need appropriate directives

11. Struts11 Reading Husted chapters 1-3 (tutorial and background) Husted chapters 4-10 (reference) Basham chapter 14 struts-documentation.war