spring 配置properties 编码

<!-- properties 配置文件 -->
    <bean 
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <array>
                <value>classpath*:app.properties</value>
                <value>classpath*:redis.properties</value>
            </array>
        </property>
        <property name="fileEncoding" value="utf-8"></property>  配置utf-8 编码
    </bean>