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1、沈阳航空工业学院毕业设计（论文）JSPbestpracticesJavaServerPages(JSPs)technologyisanextensionofJavaservlettechnologyandcombinesHTMLandJavacodeintoasinglefile.WhileJavaservlettechnologyfocusesonJavaclassescapableofgeneratingHTMLoutputwithPrintWriter.println()statements,JSPtechnologyabstractsthisc

2、oncepttoahigherlevel.WithJavaServerPages,aWebdevelopercanwritestaticHTMLpagesandsimplyaddJavacodeinthosesectionsofthepagethatneedtobedynamicallygenerated.WhilethisflexibilityenablesrapiddevelopmentofsimpleWebapplications,itcanbeabused,resultinginunnecessarilycomplexapplicationst

3、hataredifficulttomaintain,reuse,andenhance.Toavoidneedlesslycomplexapplications,followthepracticesIpresentinthisarticle:1.SeparateHTMLfromJava2.PlacebusinesslogicinJavaBeans3.Factorgeneralbehavioroutofcustomtaghandlerclasses4.FavorHTMLinJavahandlerclassesoverJavainJSPs5.Useanapp

4、ropriateinclusionmechanism6.UseaJSPtemplatemechanism7.Usestylesheets8.UsetheMVCpattern9.Useavailablecustomtaglibraries10.UseJSPcommentsinmostcases11.FollowHTMLbestpractices12.UtilizetheJSPexceptionmechanismThesetipswillhelpyouwriteJSPsthatarereusableandeasytomaintain.(1)Separate

5、HTMLfromJavaItcanbetemptingtothrowallJavaandHTMLcodenecessaryforaWebpageintoasingleJSPfile.Insimplesystemdevelopment,suchanapproachmakesiteasyforsomeonenewtothesystemtolocateallrelevantcodeinoneplaceandunderstandhowit11沈阳航空工业学院毕业设计（论文）allinteracts.However,thisapproachbecomesburd

6、ensomeandcostlywhentheapplicationgrowsmorecomplexandmoredevelopersbecomeinvolved.CombiningHTMLandJavainthesamesourcecodecanmakethecodesignificantlylessreadable.Toenhancesoftwarereadability,developersoftenuseindentation;butmixingHTMLandJavascriptletsinthesamefilecanmakeusefulinde

7、ntationextremelydifficulttomaintain.ManyWebdevelopmentmethodologiesandarchitecturesnowemphasizetheseparationofHTMLfromJavacodesodifferentdeveloperscanfocusontheirstrengths.ProperlyseparatingJavaandHTML,includingHTML-likeJSPtagsandcustomtags,allowsWebdesignersandHTMLcoderstoworko

8、ntheHTML(presentation)aspects,whileJavadevelope