spring3.1 @ResponseBody 返回乱码 springframeworkwebmvc

<beans:bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
        <beans:property name="messageConverters">
            <beans:list>
                <beans:bean class="org.springframework.http.converter.StringHttpMessageConverter">
                    <beans:property name="supportedMediaTypes">
                        <beans:list>
                            <beans:value>text/plain;charset=UTF-8</beans:value>
                        </beans:list>
                    </beans:property>
                </beans:bean>
            </beans:list>
        </beans:property>
    </beans:bean>