对于 Spring Boot 1.2.3，如何在 JSON 序列化中设置忽略空值?

问题描述

在 Spring Boot 1.2.3 中，我们可以通过属性文件自定义 Jackson ObjectMapper.但是我没有找到一个属性可以在将 Object 序列化为 JSON 字符串时设置 Jackson 忽略空值.

In the Spring Boot 1.2.3, we can customize the Jackson ObjectMapper via properties file. But I didn't find a attribute can set Jackson ignore null value when serialization the Object to JSON string.

spring.jackson.deserialization.*= # see Jackson's DeserializationFeature
spring.jackson.generator.*= # see Jackson's JsonGenerator.Feature
spring.jackson.mapper.*= # see Jackson's MapperFeature
spring.jackson.parser.*= # see Jackson's JsonParser.Feature
spring.jackson.serialization.*=

我想像

ObjectMapper mapper = new ObjectMapper();
mapper.setSerializationInclusion(Include.NON_NULL);

推荐答案

这是 Spring Boot 1.3.0 的增强功能.

This was an enhancement for Spring Boot 1.3.0.

• 支持 spring.jackson.include
• 为 Jackson serializationInclusion 添加属性

很遗憾，您需要在 1.2.3 上以编程方式对其进行配置

So unfortunately you'll need to configure it programmatically on 1.2.3

@JsonSerialize(include=JsonSerialize.Inclusion.NON_NULL)
public class Shop {
    //...
}

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