spring 3 mvc 的 @ResponseBody返回数据中文乱码

<bean
    class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
    <property name="messageConverters">
        <list>
            <bean
                class="org.springframework.http.converter.StringHttpMessageConverter">
                <property name="supportedMediaTypes">
                    <list>
                        <bean class="org.springframework.http.MediaType">
                            <constructor-arg index="" value="text" />
                            <constructor-arg index="" value="plain" />
                            <constructor-arg index="" value="UTF-8" />
                        </bean>
                    </list>
                </property>
            </bean>
        </list>
    </property>
</bean>