java @ResponseBody返回值中去掉NULL字段
需要同时添加两个位置:
1、annotation-driven过滤
<mvc:annotation-driven> <mvc:message-converters register-defaults="true"> <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"> <property name="objectMapper"> <bean class="com.fasterxml.jackson.databind.ObjectMapper"> <property name="dateFormat"> <bean class="java.text.SimpleDateFormat"> <constructor-arg type="java.lang.String" value="yyyy-MM-dd HH:mm:ss" /> </bean> </property> <property name="serializationInclusion"> <util:constant static-field="com.fasterxml.jackson.annotation.JsonInclude.Include.NON_NULL" /> </property> </bean> </property> </bean> </mvc:message-converters> </mvc:annotation-driven>
2、RequestMapping过滤
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"> <property name="messageConverters"> <list> <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"> <property name="objectMapper"> <bean id="jacksonObjectMapper" class="com.fasterxml.jackson.databind.ObjectMapper"> <property name="dateFormat"> <bean class="java.text.SimpleDateFormat"> <constructor-arg type="java.lang.String" value="yyyy-MM-dd HH:mm:ss" /> </bean> </property> <property name="serializationInclusion"> <util:constant static-field="com.fasterxml.jackson.annotation.JsonInclude.Include.NON_NULL" /> </property> </bean> </property> <property name="supportedMediaTypes"> <list> <value>application/json;charset=UTF-8</value> <value>application/x-www-form-urlencoded</value> </list> </property> </bean> <bean class="org.springframework.http.converter.ByteArrayHttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>image/jpeg</value> <value>image/png</value> </list> </property> </bean> </list> </property> </bean>