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Posted on 2006-05-04 01:02 oxl 阅读(374) 评论(0) 编辑 收藏 所属分类: Java Web技术
逐个讲解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>
这里使用了一个Filter来对所有的url进行过滤,而只有在webwork.properties中的设定的webwork.action.extension作为扩展名才会被解悉为一个action.
而定义了一个监听器主要是用Spring的监听Web容器里的变化,这里主要是用于Spring作为WebWork的IoC.如果想让Spring有多个context配置文件,那就可加入下面的代码:
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext-*.xml,classpath*:applicationContext-*.xml</param-value>
</context-param> *param-value是用逗号隔开的配置文件列表,记住是用相对于Web应用的路径.
这里如果想定义一个WebWork tag,那么就可加入以下的代码:
<taglib>
<taglib-uri>webwork</taglib-uri>
<taglib-location>/WEB-INF/lib/webworkxx.jar</taglib-location>
</taglib> 这样,在视图jsp文件中引用WebWork tag时,只须要把uri="webwork"就行了,而不用写成这样uri="/webwork".
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在说xwork.xml之前,我们先了解webwork-default.xml文件,这个文件是由webwork.jar文件里有的,存放在classpath中,所以我们不用创建这个文件,因为每次运行webwork应用时,webwork都会自动去classpath查找这个文件.这个文件预先设置好了一些默认的参数,比如result type, interceptors等,可以说是我们xwork.xml中的默认值,同时也为我们的xwork.xml提供好了很多工具,比如params拦截器就是最典型的一个.
在编写xwork.xml时,我们一般都要导入这个webwork-default.xml文件,代码如下:
<include file="webwork-default.xml"/>
具体的xwork.xml配置,由以后的学习中给出...(呵....我也还不清楚,没有实践过呢..)
xwork.xml文件必须放在/WEB-INF/classes/中.
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下面说一下webwork.properties文件,这个文件是配置webwork行为特性的文件,他可以改变webwork的扩展名,以及编码等.这个文件的详细说明可以参考官方的文档:
### 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,大至上已经清楚了这些文件的大至用途,下一步,弄清xwork的配置.
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