处理后台向前台传递的json数据

在pom文件中添加下面三种依赖jar包

   <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>

spring.xml中加入以下bean

    <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>

具体这里的bean的意思，后期更新