<bean id="propertyConfigurer"  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        property name="fileEncoding" value="utf-8" />
        ="locations">
            list>
                value>classpath:/config/pay-alipay.properties</property>
bean>

@Value("#{propertyConfigurer['workFlow.url']}") private String flowUrl;

@Value("${material.qrCode.target.url}")

private String qrCodeUrl;