spring$ placeholder Read configuration file value

(<!--  Get Properties Data source file   Way one  --><bean id= "Propertyconfigurer"  class= " Org.springframework.beans.factory.config.PropertyPlaceholderConfigurer ">           <property name= "Locations" >               <list>                   <value>classpath:/ssh-config/spring_2.5.5/ c3p0.properties</value>               </list>          </property>       </bean> <!--  Get Properties data source files   ways two  --><bean id = "Propertyconfigurer"  class= "Org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" >   <property name= "Location " > <value>classpath:/ssh-config/spring_2.5.5/c3p0.properties</value></ property>    </bean> <!--  Get Properties data source files   way three  -->< context:property-placeholder location= "Classpath:/ssh-config/spring_2.5.5/c3p0.properties"/>

1. You can configure multiple files, 2,3 configure one.

2. After loading the configuration file, you can use ${} in the spring XML configuration file to get the value inside the configuration file.

spring$ placeholder Read configuration file value