struts2基础教程ppt

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1、SSttrruuttss22BBaassiiccss1source:ApacheStruts2documentationTopics●Keycorefeatures●Requestprocessinglife-cycle●ImprovementsmadeinStruts2(overStruts1)●Action●Result&Resulttype●Interceptor●Validation●Configurationfiles●Packages2source:ApacheStruts2documentationKK

2、eeyyCCoorreeFFeeaattuurreess3source:ApacheStruts2documentationKeyCoreFeatures●Pluggableframeworkarchitecturethatallowsrequestlifecyclestobecustomizedforeachaction.●Flexiblevalidationframeworkthatallowsvalidationrulestobedecoupledfromactioncode.●Hierarchicalappr

3、oachtointernationalizationthatsimplifieslocalizingapplications.4source:ApacheStruts2documentationKeyCoreFeatures●Integrateddependencyinjectionenginethatmanagescomponentlifecycleanddependencies.(Bydefault,theframeworkutilizesSpringfordependencyinjection.)●Modula

4、rconfigurationfilesthatusepackagesandnamespacestosimplifymanaginglargeprojectswithhundredsofactions.●Java5annotationsthatreduceconfigurationoverhead.(Java1.4istheminimumplatform.)5source:ApacheStruts2documentationSSttrruuttss22RReeqquueessttPPrroocceessssiinngg

5、LLiiffee--CCyyccllee6source:ApacheStruts2documentationStruts2Architecture7source:ApacheStruts2documentationStruts2RequestProcessing1.Thewebbrowserrequestsaresource(/mypage.action,/reports/myreport.pdf,etcetera)2.TheFilterDispatcherlooksattherequestanddetermines

6、theappropriateAction3.TheInterceptorsautomaticallyapplycommonfunctionalitytotherequest,likeworkflow,validation,andfileuploadhandling4.TheActionmethodexecutes,usuallystoringand/orretrievinginformationfromadatabase5.TheResultrenderstheoutputtothebrowser,beitHTML,

7、images,PDF,orsomethingelse8source:ApacheStruts2documentationIImmpprroovveemmeennttssmmaaddeeiinnSSttrruuttss229source:ApacheStruts2documentationSimplifiedDesign●Programmingtheabstractclassesinsteadofinterfacesisoneofdesignproblemofstruts1frameworkthathasbeenres

8、olvedinthestruts2framework.●MostoftheStruts2classesarebasedoninterfacesandmostofitscoreinterfacesareHTTPindependent.10source:ApacheStruts2documentationIntelligentDefaults●Mo