springmvc @responseBody编码

在servlet-mvc开头加上这段

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