j2ee笔记.docx
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j2ee笔记
UML½¨Ä£¹¤¾ß£ºkdesdk-umbrello
linuxÏÂeclipse,tomcatÕûºÏ£º
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µãBrowser...Ñ¡ÔñtomcatµÄλÖÃ-->È·¶¨-->Finish
1.（eclipsetomcat）javax.servlet.http.httpservlet²»´æÔÚ
--------µ½tomcatµÄ°²×°Â·¾¶ÏÂ\lib\servlet-api.jar¸´ÖƵ½WEB-INF/libÏ£¬È»ºóµãÏîÄ¿Ãû°´F5£¬Ó¦¸Ã¾ÍOKÁË
2.Æô¶¯tomcatÔËÐÐjspʱ³öÏÖ“WARNING:
[SetContextPropertiesRule]{Context}Settingproperty'source'to'org.eclipse.jst.jee.server:
HelloWorld'didnotfindamatchingproperty.”
--------³öÏÖSetPropertiesRule¾¯¸æµÄÔ ÒòÊÇÒòΪTomcatÔÚserver.xmlµÄContext½ÚµãÖв»Ö§³ÖsourceÊôÐÔ£º
½â¾ö·½·¨ÊÇÔÚServersÊÓͼÀïË«»÷´´½¨µÄserver£¬È»ºóÔÚÆäserverµÄÅäÖýçÃæÖÐÑ¡ÖÐ"PublishmodulecontextstoseparateXMLfiles"Ñ¡Ïî¡£
JAXBÀà¿â´¦Àíxml£ºÏÂÔØJAXB£¬½âѹ£¬½«ÆäϵÄbinĿ¼¼ÓÈ뵽ϵͳ»·¾³±äÁ¿
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ÔËÐÐservletÀࣺ
½¨Á¢HelloServlet.java£¨¼Ì³ÐservletÀࣩ,ÓÒ¼üµ¥»÷DepolymentDesciptorÖеÄServlets£¬Ñ¡ÕßNew->Servlet->Ñ¡ÖÐUseexistingServletclass£¬È»ºóµ¥»÷Browse...°´Å¥£¬Ñ¡ÔñHeloServletÀ֮࣬ºó¾Í¿ÉÒÔͨ¹ýä¯ÀÀÆ÷·ÃÎÊ¡£
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CoreÖ§³ÖJSPÖеÄһЩ»ù±¾²Ù×÷
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XmlÖ§³ÖXMLÎĵµµÄ´¦Àí
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FormatÖ§³Ö¶ÔÊý¾ÝµÄ¸ñʽ»¯
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SQLÖ§³ÖJSP¶ÔÊý¾Ý¿âµÄ²Ù×÷
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xmlversion="1.0"encoding="UTF-8"?
>
xmlns="
xmlns:
xsi="http:
//www.w3.org/2001/XMLSchema-instance"
xsi:
schemaLocation="
/WEB-INF/fmt.tld
/WEB-INF/fmt-rt.tld
/WEB-INF/c.tld
/WEB-INF/c-rt.tld
/WEB-INF/sql.tld
/WEB-INF/sql-rt.tld
/WEB-INF/x.tld
/WEB-INF/x-rt.tld
Ö®ºó´´½¨jspÎļþ²âÊÔ£¬ÐëÔÚÒ³ÃæÉÏÉùÃ÷ʹÓÃJSTLµÄcore±êÇ©¿â£º
<%@tagliburl="prefix="c"%>
------------------------------------------------------------------
struts¿ò¼Ü£º4¸öºËÐÄ×é¼þ£ºActionServlet（¼Ì³Ðjavax.servlet.http.HttpServletÀà）,
ActionClass£¨¿Í»§ÇëÇó¶¯×÷ºÍÒµÎñÂß¼ ´¦ÀíÖ®¼äµÄÒ»¸öÊÊÅäÆ÷Adapter,¼Ì³ÐActionÀࣩ,
ActionMapping,
ActionFormBean£¨·Ç³Ö¾ÃÐÔÊý¾Ý´æ´¢£©
ÔÚeclipseÖÐн¨DynamicWebProject£¬Ö®ºó°ÑÏÂÔصÄStruts1.2.7°ü½âѹ£¬½«ÀïÃæµÄjarÎļþ¸´ÖƵ½WebContent/WEB-INFĿ¼ÏµÄlibĿ¼ÖУ¬Ö®ºóÅäÖÃWebContent.WEB—INFĿ¼ÏµÄweb.xmlÎļþ（ÅäÖù¤×÷¿ÉÒÔÔÚÒ»¸öÎļþÖнøÐУ¬Ò²¿ÉÒÔÔÚ¶à¸öÎļþÖнøÐУ¬Èç¹û²ÉÓõ¥ÅäÖÃÎļþµÄ·½Ê½£¬Ò»°ãÊDZàдStruts-config.xml£¬ÎļþÃûÓÉweb.xmlÎļþ¶¨Òå）:
--servletµÄÃû³Æ-->
action
--servletËùÔÚµÄλÖÃ-->
org.apache.struts.action.ActionServlet
--servletÆô¶¯Ê±µÄ²ÎÊý-->
--¶¨ÒåstrutsµÄÅäÖÃÎļþ-->
config
/WEB-INF/struts-config.xml
--¶¨ÒådebugµÄ¼¶±ðΪ2-->
debug
2
--¶¨ÒådetailµÄ¼¶±ðΪ2-->
detail
2
2
×¢Ò⣺ΪÁË°æ±¾¿ØÖÆ·½±ã£¬±ÜÃâÓ·Ö׵ĵ¥¶Àstruts-config.xmlÎļþ£¬×îºÃ²ÉÓöà¸öÅäÖÃÎļþ£¬Ã¿¸ö¿ª·¢Õßֻά»¤×Ô¼ºµÄÅäÖÃÎļþ
ÅäÖÃStruts-config.xml:
xmlversion="1.0"encoding="UTF-8"?
>
"http:
//jakarta.apache.org/struts/dtds/struts-config_1_1.dtd"
--NOTE:
IFyouhavaageneratortooltocreatethecorrespondingJavaclassesforyou,youcouldincludethe
detailsinthe"form-bean"elementitself.withthecorresponding"name"and"type"attributes,asshownhere.
-->
--ÅäÖÃforembean-->
--ÅäÖÃÈ«¾ÖÒì³£-->
--µ±ExceptionÒì³£Å׳öʱ£¬Ìøתµ½globalerror.jspÒ³Ãæ-->
--=====================ActionMappingDefinitions-->
--ÅäÖÃactionmapping-->
--======================ControllerConfiguration-->
--Titles-->
--ÅäÖÃÏûÏ¢×ÊÔ´Îļþ-->
--======================PlugInsConfiguration-->
--=============Titlespugin================-->
--
ThisplugininitializeTitlesdefinitionfactory.Thislatercantakessomeparamtersexplainedhereafter.
Thepluginfirstreadparamtersfromweb.xml,thenoverloadthemwithparamtersdefinedhere.Allparamtersareoptional.
Thepluginshouldbedeclaredineachstruts-configfile.
-definitions-config:
（optional）
Specifyconfigurationfilenames.Therecanbeseveralcommaseparatedfilenames（degalut:
?
?
）
-moduleAware:
（optional-struts1.1）
SpecifyiftheTitlesdefinitionfactoryismoduleaware,iftrue（default）,therewillbeonefactoryforeachStrutsmodule.
Iffalse,therewilllbeonecommonfactoryforallmodule.Inthislatercase,
itisstillneededtodeclareonepluginpermodule.
Thefactorywillbeinitializedwithparamtersfoundinthefirstinitializedplugin（generallytheoneassociatedwiththe
defaultmodule）.
true:
Onefactorypermodule.（default）
falase:
onesinglesharedfactoryforallmodules
-definitions-parser-validate:
（optional）
SpecifyifxmlparsershouldvalidatetheTitlesconfigurationfile.
ture:
validate.DTDshouldbespecifiedinfileheader.（default）
false:
novalidation
PathsfoundinTitlesdefinitionsarerelativetothemaincontext.
-->
--commentfollowingifstruts1.0.x-->
--ÅäÖÃTitles²å¼þ-->
--ÅäÖÃvalidator²å¼þ-->
=======================================================================
struts2¿ò¼Ü:
ÏÂÔØ×îа汾Struts2.5.2（Ò»°ãÏÂÔØËùÐèÒªµÄlib°ü¼´¿É）,н¨DynamicWebProjectÏîÄ¿（×¢ÒâÒª½«Defaultoutputfolder¸ÄΪWebContent/classes£¬ÇÒѡΪ×Ô¶¯Éú³Éweb.xmlÎļþ）£¬½«ÏÂÔصÄStruts2/apps/struts2-bank/libϵÄjarÎļþ¸´ÖƵ½ÏîĿϵÄWebContent/WEB-INF/libÏ£¬
Ö®ºó½«Struts2/apps/struts2-bankʾÀýÎļþÖÐweb.xmlÖеÄfilter±êÇ©¡¢filter-mapping±êÇ©µÄÄÚÈÝcopyµ½ÏîÄ¿µÄweb.xmlÎļþÖУ¬²¢½«Struts2/apps/struts2-bankʾÀýÎļþÖеÄstruts.xml¸´ÖƵ½ÏîÄ¿µÄsrcĿ¼Ï¡£
·ÃÎÊWEBÔªËصÄËÄÖÖ·½·¨£º
//È¡µÃMapÀàÐÍ£ºrequest£¬session£¬application£¨µÚÒ»£¬¶þÖÖ·½·¨£©
//È¡µÃhttpÀïµÄÌØÊâ·½·¨£ºHttpServletRequest,HttpSession,ServletContext£¨µÚÈý£¬ËÄÖÖ·½·¨£©
µÚÒ»ÖÖ£º£¨ÒýÓÃActionContextÀࣩ
publicclassLoginActionextendsActionSupport{
privateMaprequest;
privateMapsession;//³£³£»ñÈ¡session
privateMapapplication;
publicLoginAction（）{
request=（Map）ActionContext.getContext.get（“request”）;
session=（Map）ActionContext.getContext.get（“session”）;
application=（Map）ActionContext.getContext.
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