spring mvc 4+ @ResponseBody 中文乱码

（1）加上produces = {"application/json;charset=UTF-8"}

    @RequestMapping(value="/birthday.chtm",produces = {"application/json;charset=UTF-8"})

（2）在spring-mvc.xml中配置

    注意 4+版本的spring-mvc要使用 http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd

 <mvc:annotation-driven>
       <mvc:message-converters>
           <bean class="org.springframework.http.converter.StringHttpMessageConverter">
               <constructor-arg value="#{T(java.nio.charset.Charset).forName('UTF-8')}"/>
               <property name="supportedMediaTypes">
                   <list>
                       <value>text/plain;charset=UTF-8</value>
                       <value>text/html;charset=UTF-8</value>
                       <value>applicaiton/javascript;charset=UTF-8</value>
                   </list>
               </property>
               <property name="writeAcceptCharset"><value>false</value></property>
           </bean>
           <bean
               class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
               <property name="supportedMediaTypes">
                   <list>
                       <value>application/json; charset=UTF-8</value>
                       <value>application/x-www-form-urlencoded; charset=UTF-8</value>
                   </list>
               </property>
           </bean>
       </mvc:message-converters>
   </mvc:annotation-driven>