场景
假如有以下属性文件dev.properties, 需要注入下面的tag
tag=123
通过PropertyPlaceholderConfigurer
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="location" value="dev.properties" /> </bean>
代码
@Value("${tag}")
private String tag;
通过PreferencesPlaceholderConfigurer
<bean id="appConfig" class="org.springframework.beans.factory.config.PreferencesPlaceholderConfigurer"> <property name="location" value="dev.properties" /> </bean>
代码:
@Value("${tag}")
private String tag;
通过PropertiesFactoryBean
<bean id="config" class="org.springframework.beans.factory.config.PropertiesFactoryBean"> <property name="location" value="dev.properties" /> </bean>
代码:
@Value("#{config['tag']}")
private String tag;
通过util:properties
效果同PropertiesFactoryBean一样
代码:
@Value("#{config['tag']}")
private String tag;