javaweb 乱码问题

<mvc:annotation-driven>
        <!-- @ResponseBody乱码问题，将StringHttpMessageConverter的默认编码设为UTF-8 -->
        <mvc:message-converters register-defaults="false">
            <bean class="org.springframework.http.converter.StringHttpMessageConverter">
                <constructor-arg value="UTF-8"/>
            </bean>
        </mvc:message-converters>
    </mvc:annotation-driven>