如何处理后台向前台传递的json数据

<dependency>
   <groupId>com.fasterxml.jackson.core</groupId>
   <artifactId>jackson-annotations</artifactId>
   <version>2.9.8</version>
  </dependency>
  <dependency>
   <groupId>com.fasterxml.jackson.core</groupId>
   <artifactId>jackson-core</artifactId>
   <version>2.9.8</version>
  </dependency>
  <dependency>
   <groupId>com.fasterxml.jackson.core</groupId>
   <artifactId>jackson-databind</artifactId>
   <version>2.9.8</version>
  </dependency>

<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>
        <bean class="org.springframework.http.MediaType">
          <constructor-arg index="0" value="text"/>
          <constructor-arg index="1" value="plain"/>
          <constructor-arg index="2" value="UTF-8"/>
        </bean>
        <bean class="org.springframework.http.MediaType">
          <constructor-arg index="0" value="*"/>
          <constructor-arg index="1" value="*"/>
          <constructor-arg index="2" value="UTF-8"/>
        </bean>
        <bean class="org.springframework.http.MediaType">
          <constructor-arg index="0" value="text"/>
          <constructor-arg index="1" value="*"/>
          <constructor-arg index="2" value="UTF-8"/>
        </bean>
        <bean class="org.springframework.http.MediaType">
          <constructor-arg index="0" value="application"/>
          <constructor-arg index="1" value="json"/>
          <constructor-arg index="2" value="UTF-8"/>
        </bean>
      </list>
    </property>
  </bean>