Struts2学习总结

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1、项目开发的顺序Struts2能做什么呢Struts2的流程图Struts2框架的完整工作流程Struts2请求页面的工作流程Allobjectsinthisarchitecture(Actions,Results,Interceptors,andsoforth)arecreatedbyanObjectFactory.ThisObjectFactoryispluggable.WecanprovideourownObjectFactoryforanyreasonthatrequiresknowingwhenobjectsintheframeworkarecreated.

2、ApopularObjectFactoryimplementationusesSpringasprovidedbytheSpringPlugin.Inthediagram,aninitialrequestgoestotheServletcontainer(suchasJettyorResin)whichispassedthroughastandardfilterchain.Thechainincludesthe(optional)ActionContextCleanUpfilter,whichisusefulwhenintegratingtechnologiessu

3、chasSiteMeshPlugin.Next,therequiredFilterDispatcheriscalled,whichinturnconsultstheActionMappertodetermineiftherequestshouldinvokeanaction.IftheActionMapperdeterminesthatanActionshouldbeinvoked,theFilterDispatcherdelegatescontroltotheActionProxy.TheActionProxyconsultstheframeworkConfigu

4、rationFilesmanager(initializedfromthestruts.xmlfile).Next,theActionProxycreatesanActionInvocation,whichisresponsibleforthecommandpatternimplementation.ThisincludesinvokinganyInterceptors(thebeforeclause)inadvanceofinvokingtheActionitself.OncetheActionreturns,theActionInvocationisrespon

5、sibleforlookinguptheproperresultassociatedwiththeActionresultcodemappedinstruts.xml.Theresultisthenexecuted,whichoften(butnotalways,asisthecaseforActionChaining)involvesatemplatewritteninJSPorFreeMarkertoberendered.Whilerendering,thetemplatescanusetheStrutsTagsprovidedbytheframework.So

6、meofthosecomponentswillworkwiththeActionMappertorenderproperURLsforadditionalrequests.Interceptorsareexecutedagain(inreverseorder,callingtheafterclause).Finally,theresponsereturnsthroughthefiltersconfiguredintheweb.xml.IftheActionContextCleanUpfilterispresent,theFilterDispatcherwillnot

7、cleanuptheThreadLocalActionContext.IftheActionContextCleanUpfilterisnotpresent,theFilterDispatcherwillcleanupallThreadLocals.其工作流程模拟Struts2工作原理创建javaweb工程模拟Struts2工作原理客户端有两个请求链接test.jspsuserWorld