@JsonInclude(Include.NON_NULL)
原文地址:https://www.cnblogs.com/-xuzhankun/p/8034179.html
@JsonInclude(Include.NON_NULL)
前端的同事要求说尽量不要有null,可有为空串“” 或者 0 或者 [], 但尽量不要null。
所以@JsonInclude(Include.NON_NULL) 这个注解放在类头上就可以解决。 实体类与json互转的时候 属性值为null的不参与序列化
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.JsonInclude.Include;
@JsonInclude(Include.NON_NULL)
public class WithdrawDetail implements Serializable {
}
或者
WithdrawDetail wd = new WithdrawDetail();
wd.setSerializationInclusion(Include.NON_NULL);
实际效果
全局配置
springMVC.xml
<!-- 默认的注解映射的支持 比如requestMapper之类的 -->
<mvc:annotation-driven>
<mvc:message-converters>
<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<property name="objectMapper">
<bean class="com.fasterxml.jackson.databind.ObjectMapper">
<property name="serializationInclusion">
<value type="com.fasterxml.jackson.annotation.JsonInclude.Include">NON_NULL</value>
</property>
</bean>
</property>
</bean>
</mvc:message-converters>
</mvc:annotation-driven>