spring @value goes back to the value in the configuration file

Simplify reading configuration files with Spring 3's @value

 

Spring 3 supports @value annotation to obtain the configuration value in the properties file, which greatly simplifies the code for reading the configuration file.

1. Configure the properties file in the applicationContext.xml file

<bean id="configPropertys"
    class="org.springframework.beans.factory.config.PropertysFactionBean">
    <property name="locations">
        <list>
            <value>classpath*:system.properties</value>

            <value>classpath*:db.properties</value>

 </list> </property> </bean>

 

2. Use the @value annotation in the controller to get the value of the configuration file

@Value("#{configPropertys['server-oa.web.uploadPath']}")

private String uploadPath;

Even if an initial value is assigned to a variable, the value in the configuration file will prevail.