??????????war????????????????????war????????к??????????????????????????????????????????Java Web???
?????????
??????????????????????????е????????
????????????web.xml?????????????????????е? /WEB-INF/config ????????????????
????<context-param>
????<param-name>configDir</param-name>
????<param-value>/WEB-INF/config</param-value>
????</context-param>
?????????????????????????????·??????
????<context:property-placeholderlocation="${configDir}/database.properties"ignore-unresolvable="true"/>
???????磬spring?????????
<beanid="configProperties"class="org.springframework.beans.factory.config.PropertiesFactoryBean">
<propertyname="locations">
<list>
<value>${configDir}/*.properties</value>
</list>
</property>
</bean>
<beanid="propertyConfigurer"class="org.springframework.beans.factory.config.PreferencesPlaceholderConfigurer">
<propertyname="properties"ref="configProperties"/>
</bean>
????????????
?????????????У?????????????????????????????????war??????????????滻??
??????????????????????????webapp??Context Descriptor????tomcat?????
????????????${CATALINA_HOME}/conf/Catalina/localhost/?????[webapp_name].xml????????
????registryService.xml?????????￡?
????<?xml version="1.0" encoding="UTF-8"?>
????<Context>
????<Parametername="configDir"value="file:/app/config"override="false"/>
????</Context>
???????У? value="file:/app/config" ???????????????? /app/config ????