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  • 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>
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  • 原文地址:https://www.cnblogs.com/zhangpengshou/p/5630723.html
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