毕业论文外文翻译-Struts 开发的最佳实践

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1、BestpracticesforStrutsdevelopmentPalaniyappanThiagarajan,PagadalaSureshStruts:AbriefintroductionStruts,anopensourceframeworkyoucanusetobuildWebapplications,isbasedonthepopularModel-View-Controller(MVC2)designparadigm.TheframeworkisbuiltuponstandardtechnologieslikeJavaServlets,JavaBe

2、ans,ResourceBundles,andXML,anditprovidesflexibleandextensiblecomponents.StrutsimplementstheControllerlayerintheformof ActionServlet andrecommendsbuildingtheViewlayerusingJSPtaglibraries.StrutsalsoprovidesawrapperaroundtheModellayerthroughAction classes.Figure1illustratestheStrutsfra

3、meworkbasedontheModel-View-Controllerdesign.Figure1.StrutsandMVC OverviewofStrutscomponentsFirst,we'llexplaintheStrutscomponentsinthecontextofbestpracticesandtheroleeachoneplaysinyourWebapplicationdevelopment.ActionEvery Action ofyourapplicationextendsStruts' org.apache.struts.actio

4、n.Action.These Action classesprovideaninterfacetotheapplication'sModellayer,actingasawrapperaroundthebusinesslogic.Each Action classmustprovideitscase-specificimplementationtothe perform() method.The perform() methodalwaysreturnsavalueoftype ActionForward.ActionFormEvery ActionForm 

5、ofyourapplicationextendsStruts' org.apache.struts.action.ActionForm. ActionFormsaresimpleJavaBeansthatencapsulateandvalidaterequestparameters.Tovalidateyourrequestdata,your ActionForm's validate() methodmustgiveacase-specificimplementation. ActionFormsserveasacarrierofrequestdatatot

6、he Action class.AJSPobjectcombineswitharespective ActionForm toformyourapplication'sViewlayer,wherealmosteveryformfieldoftheJSPobjectmapstoanattributeofthecorresponding ActionForm.JSPcustomtaglibrariesTheJSPcustomtaglibrariesareacollectionofactionspresentedastags.Thisisapowerfulfeat

7、ureoftheJSPSpecification1.1;itallowsyoutoseparatepresentationfromotherapplicationtiers.ThelibrariesareeasytouseandyoucanreadtheminXML-likefashion.YoucaneasilymaintaintheJSPcomponentsbyminimizingtheuseofJavascriptletsinthem.TheJSPtagsthatStrutsprovidesincludeHTML,logic,andbeantags.Ac

8、tionErrorsYouuse Ac