使用@Value和SpEL來完成。spring
屬性文件:spa
client.valid.version=1.2,1.1
XML配置:it
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE" /> <property name="ignoreResourceNotFound" value="false" /> <property name="fileEncoding" value="UTF-8" /> <property name="locations"> <list> <value>classpath*:/config/dev/*.properties</value> </list> </property> </bean>
注入Bean:io
@Value("#{'${client.valid.version}'.split(',')}") private List<String> validVersions; public boolean isVersionValid(String version) { if (StringUtils.isBlank(version)) { return false; } return validVersions.contains(version); }
SpEL格式爲#{},表達式內部運算轉換成List。class