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Posted on 2006-05-04 01:02 oxl 閱讀(380) 評論(0) 編輯 收藏 所屬分類: Java Web技術
逐個講解WebWork中的一些配置文件的基本用法:
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web.xml
 <filter>
????<filter-name>webwork</filter-name>
????<filter-class>com.opensymphony.webwork.dispatcher.FilterDispatcher</filter-class>
</filter>
<filter-mapping>
????<filter-name>webwork</filter-name>
????<url-pattern>/*</url-pattern>
</filter-mapping>
<listener>
????<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
這里使用了一個Filter來對所有的url進行過濾,而只有在webwork.properties中的設定的webwork.action.extension作為擴展名才會被解悉為一個action.
而定義了一個監聽器主要是用Spring的監聽Web容器里的變化,這里主要是用于Spring作為WebWork的IoC.如果想讓Spring有多個context配置文件,那就可加入下面的代碼:
<context-param>
????<param-name>contextConfigLocation</param-name>
????<param-value>/WEB-INF/applicationContext-*.xml,classpath*:applicationContext-*.xml</param-value>
</context-param> *param-value是用逗號隔開的配置文件列表,記住是用相對于Web應用的路徑.
這里如果想定義一個WebWork tag,那么就可加入以下的代碼:
<taglib>
????<taglib-uri>webwork</taglib-uri>
????<taglib-location>/WEB-INF/lib/webworkxx.jar</taglib-location>
</taglib> 這樣,在視圖jsp文件中引用WebWork tag時,只須要把uri="webwork"就行了,而不用寫成這樣uri="/webwork".
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在說xwork.xml之前,我們先了解webwork-default.xml文件,這個文件是由webwork.jar文件里有的,存放在classpath中,所以我們不用創建這個文件,因為每次運行webwork應用時,webwork都會自動去classpath查找這個文件.這個文件預先設置好了一些默認的參數,比如result type, interceptors等,可以說是我們xwork.xml中的默認值,同時也為我們的xwork.xml提供好了很多工具,比如params攔截器就是最典型的一個.
在編寫xwork.xml時,我們一般都要導入這個webwork-default.xml文件,代碼如下:
<include?file="webwork-default.xml"/>
具體的xwork.xml配置,由以后的學習中給出...(呵....我也還不清楚,沒有實踐過呢..)
xwork.xml文件必須放在/WEB-INF/classes/中.
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下面說一下webwork.properties文件,這個文件是配置webwork行為特性的文件,他可以改變webwork的擴展名,以及編碼等.這個文件的詳細說明可以參考官方的文檔:
###?Webwork?default?properties
###(can?be?overridden?by?a?webwork.properties?file?in?the?root?of?the?classpath)
###
###?Specifies?the?Configuration?used?to?configure?webwork
###?one?could?extend?com.opensymphony.webwork.config.Configuration
###?to?build?one's?customize?way?of?getting?the?configurations?parameters?into?webwork
#?webwork.configuration=com.opensymphony.webwork.config.DefaultConfiguration
###?This?can?be?used?to?set?your?default?locale?and?encoding?scheme
#?webwork.locale=en_US
webwork.i18n.encoding=UTF-8
###?if?specified,?the?default?object?factory?can?be?overridden?here
###?Note:?short-hand?notation?is?supported?in?some?cases,?such?as?"spring"
###???????Alternatively,?you?can?provide?a?com.opensymphony.xwork.ObjectFactory?subclass?name?here
#?webwork.objectFactory?=?spring
###?specifies?the?autoWiring?logic?when?using?the?SpringObjectFactory.
###?valid?values?are:?name,?type,?auto,?and?constructor?(name?is?the?default)
webwork.objectFactory.spring.autoWire?=?name
###?Parser?to?handle?HTTP?POST?requests,?encoded?using?the?MIME-type?multipart/form-data
#?webwork.multipart.parser=cos
#?webwork.multipart.parser=pell
webwork.multipart.parser=jakarta
#?uses?javax.servlet.context.tempdir?by?default
webwork.multipart.saveDir=
webwork.multipart.maxSize=2097152
###?Load?custom?property?files?(does?not?override?webwork.properties!)
#?webwork.custom.properties=application,com/webwork/extension/custom
###?How?request?URLs?are?mapped?to?and?from?actions
webwork.mapper.class=com.opensymphony.webwork.dispatcher.mapper.DefaultActionMapper
###?Used?by?the?DefaultActionMapper
webwork.action.extension=action
###?use?alternative?syntax?that?requires?%{}?in?most?places
###?to?evaluate?expressions?for?String?attributes?for?tags
webwork.tag.altSyntax=true
###?when?set?to?true,?WebWork?will?act?much?more?friendly?for?developers.?This
###?includes:
###?-?webwork.i18n.reload?=?true
###?-?webwork.configuration.xml.reload?=?true
###?-?raising?various?debug?or?ignorable?problems?to?errors
###???For?example:?normally?a?request?to?foo.action?someUnknownField=true?should
###????????????????be?ignored?(given?that?any?value?can?come?from?the?web?and?it
###????????????????should?not?be?trusted).?However,?during?development,?it?may?be
###????????????????useful?to?know?when?these?errors?are?happening?and?be?told?of
###????????????????them?right?away.
webwork.devMode?=?false
###?when?set?to?true,?resource?bundles?will?be?reloaded?on?_every_?request.
###?this?is?good?during?development,?but?should?never?be?used?in?production
webwork.i18n.reload=false
###?Standard?UI?theme
###?Change?this?to?reflect?which?path?should?be?used?for?JSP?control?tag?templates?by?default
webwork.ui.theme=xhtml
webwork.ui.templateDir=template
#sets?the?default?template?type.?Either?ftl,?vm,?or?jsp
webwork.ui.templateSuffix=ftl
###?Configuration?reloading
###?This?will?cause?the?configuration?to?reload?xwork.xml?when?it?is?changed
webwork.configuration.xml.reload=false
###?Location?of?velocity.properties?file.??defaults?to?velocity.properties
#?webwork.velocity.configfile?=?velocity.properties
###?Comma?separated?list?of?VelocityContext?classnames?to?chain?to?the?WebWorkVelocityContext
#?webwork.velocity.contexts?=
###?used?to?build?URLs,?such?as?the?UrlTag
webwork.url.http.port?=?80
webwork.url.https.port?=?443
###?Load?custom?default?resource?bundles
#?webwork.custom.i18n.resources=testmessages,testmessages2
###?workaround?for?some?app?servers?that?don't?handle?HttpServletRequest.getParameterMap()
###?often?used?for?WebLogic,?Orion,?and?OC4J
webwork.dispatcher.parametersWorkaround?=?false
###?configure?the?Freemarker?Manager?class?to?be?used
###?Allows?user?to?plug-in?customised?Freemarker?Manager?if?necessary
###?MUST?extends?off?com.opensymphony.webwork.views.freemarker.FreemarkerManager
#webwork.freemarker.manager.classname=com.opensymphony.webwork.views.freemarker.FreemarkerManager
###?See?the?WebWorkBeanWrapper?javadocs?for?more?information
webwork.freemarker.wrapper.altMap=true
好,大至上已經清楚了這些文件的大至用途,下一步,弄清xwork的配置.
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