<bean id="propertyConfigurer"  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

        <property name="fileEncoding" value="utf-8" />

        <property name="locations">

            <list>

                <value>classpath:/config/pay-alipay.properties</value>

            </list>

        </property>

</bean>

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

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

private String qrCodeUrl;