<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="ignoreUnresolvablePlaceholders" value="true" /> </bean> <bean class="org.springframework.web.context.support.ServletContextPropertyPlaceholderConfigurer"> <property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE" /> <property name="searchContextAttributes" value="true" /> <property name="contextOverride" value="true" /> <property name="ignoreResourceNotFound" value="true" /> <property name="locations"> <list> <value>classpath:test.properties</value> <value>classpath:test1.properties</value> </list> </property> </bean>
如上配置 其中ServletContextPropertyPlaceholderConfigurer是集成了PropertyPlaceholderConfigurer的 下面的配置是一些properties的文件 放在class根目录下 这样在spring的xml配置文件中中就能通过标签使用properties中的配置项了
比如配置数据库就可以使用了
<!-- 数据源定义 -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="${jdbc.driverClassName}" /> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> <property name="initialSize" value="${jdbc.initialSize}" /> <property name="maxIdle" value="${jdbc.maxIdle}" /> <property name="minIdle" value="${jdbc.minIdle}" /> <property name="maxActive" value="${jdbc.maxActive}" /> <property name="maxWait" value="${jdbc.maxWait}" /> <property name="removeAbandoned" value="${jdbc.removeAbandoned}" /> <property name="removeAbandonedTimeout" value="${jdbc.removeAbandonedTimeout}" /> <property name="logAbandoned" value="${jdbc.logAbandoned}" /> <property name="timeBetweenEvictionRunsMillis" value="${jdbc.timeBetweenEvictionRunsMillis}" /> </bean>