五种方式在java中读取properties文件中的内容 - AichaelLee/Summary GitHub Wiki
https://www.cnblogs.com/hafiz/p/5876243.html
springMVC Controller 和 Service 通过@value 读取properties配置信息
<!-- @Value -->
<bean id="configProperties"
class="org.springframework.beans.factory.config.PropertiesFactoryBean">
<property name="locations">
<list>
<value>classpath:MailUrl.properties</value>
</list>
</property>
</bean>
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PreferencesPlaceholderConfigurer">
<property name="properties" ref="configProperties" />
</bean>@Value("${sessionTimeOut}")
private int sessionTimeOut;