Struts 2.0 Don Brown

Web, Circa 2000

Web, Circa 2006

Struts 2 Architecture

Struts 1 Action  ActionForm  ActionForward  struts-config.xml  ActionServlet  RequestProcessor  Struts 2 Action Action or POJO’s Result struts.xml FilterDispatcher Interceptors

Struts 1

Action 

ActionForm 

ActionForward 

struts-config.xml 

ActionServlet 

RequestProcessor 

Struts 2

Action

Action or POJO’s

Result

struts.xml

FilterDispatcher

Interceptors

Struts Plugins

Simple Example

Struts 1 < html:errors /> < html:form action = &quot;/SaveMeeting&quot; > < table border = &quot;0&quot; width = &quot;100%&quot; > < tr > < th align = &quot;right&quot; > Name: </ th > < td align = &quot;left&quot; > < html:text property = &quot;name&quot; size = ”50” /> </ td > </ tr > < tr > < th align = &quot;right&quot; > Date:

</ th > < td align = &quot;left&quot; > < html:text property = &quot;date&quot; size = &quot;50&quot; /> </ td > </ tr > < tr > < th align = &quot;right&quot; > Invitees: </ th > < td align = &quot;left&quot; > < html:select property = &quot;invitees&quot; multiple = &quot;true&quot; > < html:options collection = &quot;employees&quot; property = &quot;value&quot; labelProperty = &quot;label&quot; /> </ html:select >

</ tr > < tr > < th align = &quot;right&quot; > Description: </ th > < td align = &quot;left&quot; > < html:textarea property = &quot;description&quot; rows = &quot;4&quot; cols = &quot;50&quot; /> </ td > </ tr > < tr > < td align = &quot;right&quot; > &nbsp; </ td >

... Only four pages! < td align = &quot;left&quot; > < html:submit property = &quot;DO_SUBMIT&quot; > Save </ html:submit > </ td > </ tr > </ table > </ html:form >

Struts 2 < s:form action = &quot;Meeting&quot; validate = &quot;true&quot; > < s:token /> < s:textfield label = ”Name” name = “name” /> < s:textfield label = ”Date&quot; name = &quot;date&quot; /> < s:select label = ”Invitees” name = &quot;invitees&quot; list = &quot;employees&quot; /> < s:textarea label = ”Description” n ame = &quot;description&quot; rows = &quot;4&quot; cols = &quot;50&quot; /> < s:submit value = ”Save&quot; method = &quot;save&quot; /> </ s:form >

Example Revisited

<s:textfield label=&quot;Name&quot; name=&quot;name&quot; tooltip = &quot;Meeting name&quot; />

< s:datepicker label=&quot;Date&quot; name=&quot;date&quot;/>

< s:optiontransferselect ... />

< jsp:include page = &quot;/ajax/commonInclude.jsp&quot; /> ... <s:textarea theme = &quot;ajax&quot; label=&quot;Description&quot; name=&quot;description&quot; rows=&quot;4&quot; cols=&quot;50&quot; />

But there's more . . .

Brian Kernighan Law of Debugging Difficulty Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it.

Prevention and Cure

struts.devMode = true

Built-in Testing Support public class MyActionTest extends StrutsTestCase { public void testExecute() throws Exception { assertTrue(true); } }

any.action?debug=console

any.action?profiling=yes

Time to Upgrade?

Tutorials, Guides, and FAQs

Struts 2 Training Course

< action name = &quot;editGangster&quot; class = &quot;org.apache.struts2.s1.Struts1Action&quot; > < param name = &quot;className&quot; > com.mycompany.gangstas.EditGangsterAction </ param > < result > gangsterForm.jsp </ result > </ action > Run Struts 1 Actions as Is

How do I get started?

Where We are Going