springmvc返回json中文亂碼及使用jackson自動轉換

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
  xmlns:context="http://www.springframework.org/schema/context"
  xmlns:mvc="http://www.springframework.org/schema/mvc"
  xsi:schemaLocation="http://www.springframework.org/schema/beans  
  http://www.springframework.org/schema/beans/spring-beans-3.1.xsd  
  http://www.springframework.org/schema/context  
  http://www.springframework.org/schema/context/spring-context-3.1.xsd  
  http://www.springframework.org/schema/mvc  
  http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd">
  
   <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
  	<property name="messageConverters">
  		<list>
  			<bean class="org.springframework.http.converter.StringHttpMessageConverter">
 		 		<property name="supportedMediaTypes">
			  		<list>
			  			<value>text/html;charset=UTF-8</value>
			  		</list>
			  	</property>
  			</bean>
  			<bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"></bean>
  		</list>
  	</property>
  </bean>
  
  <mvc:annotation-driven />
  
  <!-- 自動掃描注入的類 -->
  <context:component-scan base-package="com.mx.controller,com.mx.dao" />
  
  <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 
  	<property name="prefix" value="/WEB-INF/views/" />
  	<property name="suffix" value=".jsp" />
  </bean>
  
  <bean class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
  	<property name="defaultEncoding" value="UTF-8" />
  	<property name="maxUploadSize" value="10485760000" />
  	<property name="maxInMemorySize" value="40960" />
  </bean>  
  
</beans>