The pros and cons of Struts Hibernate and Springframeworks.docx

The pros and cons of Struts Hibernate and Springframeworks.docx

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TheprosandconsofStrutsHibernateandSpringframeworks

TheprosandconsofStruts,Hibernate,andSpring3frameworks

Thestrutsframeworkhastheadvantagesofmodularity,flexibilityandreuse,whilesimplifyingthedevelopmentofMVCbasedwebapplications.

Advantages:

Struts,likemanyApacheprojectssuchasTomcatandTurbine,isopensourcesoftware,whichisoneofitsgreatadvantages.Enabledeveloperstolearnmoreabouttheirinternalimplementationmechanisms.

Beyondthat,thebenefitsofStrutsareprimarilyfocusedontwoaspects:

theTaglibandthepagenavigation.TheTaglibisataglibraryforStrutsthatisflexibleenoughtogreatlyimprovedevelopmentefficiency.Inaddition,asfarasthecurrentdomesticJSPdevelopersareconcerned,itisveryraretodevelopyourowntagsinadditiontothecommonlyusedtagsbroughtinbyJSP,andperhapsStrutsisagoodstartingpoint.

Asforpagenavigation,Ithinkthat'sgoingtobeadevelopmentinthefuture,infact,tomakethecontextofthesystemclearer.Byusingaconfigurationfile,youcangrasptheconnectionbetweenthepartsofthesystem,whichisofgreatbenefittolatermaintenance.Thisisespeciallytruewhenanotherdevelopertakesovertheproject.

Inaddition,strutsisanindustry"standard"（manysuccessfulcases）,richinlearningresources,andexcellentHTMLtags

Disadvantages:

TaglibisoneoftheadvantagesofStruts,butforbeginners,butneedaprocessofcontinuouslearning,canevendisruptyourwebpageinthehabitofwriting,but,whenyougetusedtoit,youwillfeelit'sreallygood.

StrutssplittheControllerofMVCintothree,addingtothecomplexityofthesystemwhilegainingclarity.

ActionFormsisnotusedforunittesting（StrutsTestCasecanonlybeusedforintegration）

Struts,likemanyApacheprojectssuchasTomcatandTurbine,isopensourcesoftware,whichisoneofitsgreatadvantages.Enabledeveloperstolearnmoreabouttheirinternalimplementationmechanisms.TheStrutsopensourceframeworkwascreatedtomakeiteasierfordeveloperstobuildWebapplicationsbasedonJavaservletsandJavaServerPages（JSP）technologies.TheStrutsframeworkprovidesaunifiedstandardframeworkfortheopen,whichallowsdeveloperstofocusmoreonthebusinesslogicoftheapplicationbyusingStrutsasafoundation.TheStrutsframeworkitselfisamodel-view-controller（MVC）implementationusingJavaservletsandJavaServerPagestechnology.

Specifically,theadvantagesofStrutsare:

ImplementtheMVCpattern,andthestructureisclear,allowingdeveloperstofocusontheimplementationofthebusinesslogic.

Richtagscanbeused,andtheStrutstaglibrary（Taglib）,ifflexible,cangreatlyimprovedevelopmentefficiency.Inaddition,asfarasthecurrentdomesticJSPdevelopersareconcerned,itisveryraretodevelopyourowntagsinadditiontothecommonlyusedtagsbroughtinbyJSP,andperhapsStrutsisagoodstartingpoint.

Pagenavigationisgoingtobeadevelopmentinthefuture,infact,tomakethecontextofthesystemclearer.Byusingaconfigurationfile,youcangrasptheconnectionbetweenthepartsofthesystem,whichisofgreatbenefittolatermaintenance.Thisisespeciallytruewhenanotherdevelopertakesovertheproject.

ProvideExceptionhandlingmechanisms.

Databaseconnectionpoolmanagement

6.SupporttheI18N

A,gotodisplaylayer,needtoconfigureforward,everytimegototheshowlayer,thatmostaredirectlytransferredtotheJSP,andinvolvesturning,needtoconfigureforward,iftherearetenshowstheJSPlayer,needtoconfigurethestruts,tentimesanddoesnotincludedirectoryandfilechanges,sometimesneedtomodifytheforward,notethateverychangeconfiguration,requesttoredeploythewholeproject,andtomcatethisserver,alsohavetorestarttheserver,ifthebusinesschangecomplexfrequentsystem,suchassimpleoperationunthinkable.Nowthat'sit,dozensofpeopleareusingoursystemonlineatthesametime,andyoucanimaginehowbigmyworriesare.

TheActionofStrutsmustbethread-safe,whichallowsonlyoneinstancetohandleallrequests.SoalltheresourcesthatactionUSESmustbesynchronized,whichraisestheissueofthread-safety.

EachActionofStrutsiscoupledwiththeWeblayer,sothatitstestsdependontheWebcontainer,andunittestsaredifficulttoimplement.However,aJunitextensiontool,StrutsTestCase,canimplementitsunittests.

Four,typeconversion.Struts'sFormBeanUSESallthedataasaStringtype,whichcanbetransformedusingthetoolCommons-Beanutils.

ButitstransformationisattheClasslevel,andthetypeoftransformationisunconfigurable.Theerrormessagereturnedtotheuserisalsoverydifficult.

5,thedependencyonservletsistoostrong.StrutsneedstorelyonServletRequestandServletResponsetohandleAction,andallitcan'tgetridoftheServletcontainer.

Thefront-endexpressionlanguageaspect.StrutsintegratesJSTL,soitmainlyUSEStheexpressionlanguageoftheJSTLtogetthedata.However,theexpressionlanguageoftheJSTLisveryweakintheCollectionandindexproperties.

7,thecontrolofActionexecutionisdifficult.StrutscreatesanActionanditwillbeverydifficulttocontrolitsexecutionorder.YoumayevenwanttorewritetheServlettoimplementyourfunctionalrequirements.

Eight,toActionbeforeandaftertreatment.TheStrutsprocessingwhentheActionisbasedontheclasshierarchies,itisdifficulttooperatedinActionbeforeandafterprocessing.

Nine,supportforeventsisnotenough.Inthestruts,isactuallyaFormtheFormcorrespondingtoanActionclass（orDispatchAction）,inotherwords:

inthestrutsisactuallyaFormcorrespondingtoanevent,onlythestrutsthiseventiscalledapplicationevent,applicationeventandcomponentcomparedtotheeventisacoarse-grainedevents.

Strutsimportantactionformsformobjectisanobject,itrepresentsakindofapplication,thisobjectcontainsatleastafewfields,thesefieldsaretheJsppageintheforminputfield,asaformcorrespondingtoanevent,sothatwhenweneedtorefinetheeventgranularitytoforminthefield,thatis,afieldcorrespondingtoanevent,simplyusetheStrutsisunlikely,ofcourse,bycombiningturnJavaScriptcanbeimplemented.

2.Hibernate

Hibernateisanopensourceobject-relationalmappingframework,itisverylightweightforJDBCobjectencapsulation,maketheuseofJavaprogrammerscanfollowone'sinclinationstomanipulatethedatabaseobjectprogrammingthinking.

Hibernatecanbeusedinanysituation,usingtheJDBCcanintheJavaclientprogram,practical,andcanalsobeusedintheServlet/JSPWebapplication,themostrevolutionarysignificanceisthatHibernatecanreplacetheCMPinEJBofJ2EEapplicationarchitecture,tocompletetheimportanttaskofdatapersistence.

Mostdevelopmentorganizationsoftenadoptdatapersistencelayersthatcreateseparatedata.Oncetheunderlyingdatastructurechanges,thecostofadaptingtherestoftheapplicationtothischangewillbeenormous.Hibernatedulyfillsthisgap,providinganeasy-to-use,efficientobject-relationalmappingframeworkforJavaapplications.Hibernateisalightweightpersistenceframeworkthatisrichinfunctionality.

Advantages:

A.h.ibernateUSEStheJavareflectionmechanisminsteadofthebytecodeenhancementprogramtoachievetransparency.

B.Hibernate'sperformanceisexcellentbecauseit'salightweightframework.Theflexibilityofmappingisexcellent.

Itsupportsavarietyofrelationaldatabasesfromone-to-onetomany-to-manycomplexrelationships.

Cons:

itlimitstheobjectmodelyouuse.（forexample,apersistenceclassescannotbemappedintomultipletables）itsuniqueinterfaceandpoormarketsharealsodisturbing,nonetheless,Hibernateorwithitspowerfulmomentumtomitigatetheserisks.Otheropensourcepersistenceframeworksalsohavesome,butnoneofthemhaveamarketimpactlikeHibernate.

Abovepostalittlepassion,inthehopethatunderstanding,IloveyounotbecauseofsomepeoplecriticizetheHibernateanduncomfortable,butbecauseofwhoIaminsidethepostviewreallymademefeelridiculous.NomatterwhatyouthinkofHibernateasagoodthing,theonlythingI'msorryaboutisthatyoucan'tfindareallyhigh-levelevaluationofHibernateintheChineseBBS.OnTSShasahotaboutHibernatethread,withhundredsofpaste,includingHibernateauthorGavinandLiDOJDOCTO,forJDOandHibernatehadsomeheatedargument,Ihavethepatiencetoseeitagain,stillhavenotfoundtoHibernatereallypowerfulattack,theso-calledattackjusttoHibernatewithoutaGUIconfigurationtool,nocommercialcompanysupport,notstandardized,andsoontheseuntenablereason.

HerearesomeSuggestions:

One,HibernateisthelightweightobjectencapsulationofJDBC,anindependentobjectpersistencelayerframework,andAppServer,whichisnotnecessarilyassociatedwithejbs.HibernatecanbeusedinanysituationwhereJDBCcanbeused,

Forexample,thedatabaseaccesscodefortheJavaapplication,theimplementationclassfortheDAOinterface,andeventhecodeforaccessingthedatabaseinBMP.Inthatsense,HibernateandEBarenotacategorything,andthereisnosuchthingasaneither/orrelationship.

Second,HibernateisacloselyassociatedandJDBCframework,HibernatecompatibilityandJDBCdriver,andthedatabasehasacertainrelationship,andtheJavaprogramthatUSESit,however,doesn'thaveanythingtodowiththeAppServer,thereisnocompatibilityproblems.

Hibernatecan'tbeusedtocomparedirectlywithEntitybeans,onlyintheframeworkoftheentireJ2EEproject.Andeveninthewholesoftwareframework,Hiberna