spring

1、properties文件的引入

<bean id="propertyConfigurer" 
         class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
         <property name="locations" value="mail.properties"/>
    </bean>
    <bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
       <property name="host" value="${mail.host}"/>
       <property name="username" value="${mail.user}"/>
       <property name="password" value="${mail.pwd}"/>
    </bean>

或者
<bean name="propertyConfigurer"  
   class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">  
   <property name="locations">  
      <list>  
         <value>classpath:mail.properties</value>
      </list>  
   </property>  
</bean>

2、