1、添加jackson.jar包

2、在applicationContext.xml配制文件中添加如下代码

    <!--解析返回JSON -->
<!--  <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> -->
   <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
  <property name="messageConverters">
   <list >
    <ref bean="mappingJacksonHttpMessageConverter" />
   </list>
  </property>
 </bean>
 <bean id="mappingJacksonHttpMessageConverter"
  class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
  <property name="supportedMediaTypes">
   <list>
    <value>text/html;charset=UTF-8</value>
   </list>
  </property>
 </bean>

3、在controller中添加如下代码

@RequestMapping(value="/chinese/listTree", method = RequestMethod.POST) 

@ResponseBody
 public List getlistChinese(Model model){
  List<User> list = (List<ChineseCategory>) commonMgr.find("from User");
    return list;
 }

返回值可以为list也可以为Map类型