方法一
pom依赖自行添加
application.yml配置文件 中添加
spring:
jackson:
default-property-inclusion: non_null
方法二
配置类
package com.gzkj.conf;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
@Configuration
public class JacksonConfig
{
@Bean
@Primary
@ConditionalOnMissingBean(ObjectMapper.class)
public ObjectMapper jacksonObjectMapper(Jackson2ObjectMapperBuilder builder)
{
ObjectMapper objectMapper = builder.createXmlMapper(false).build();
// 通过该方法对mapper对象进行设置,所有序列化的对象都将按改规则进行系列化
// Include.Include.ALWAYS 默认
// Include.NON_DEFAULT 属性为默认值不序列化
// Include.NON_EMPTY 属性为 空("") 或者为 NULL 都不序列化,则返回的json是没有这个字段的。这样对移动端会更省流量
// Include.NON_NULL 属性为NULL 不序列化,就是为null的字段不参加序列化
//objectMapper.setSerializationInclusion(Include.NON_EMPTY);
objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
// 字段保留,将null值转为""
// objectMapper.getSerializerProvider().setNullValueSerializer(new JsonSerializer<Object>()
// {
// @Override
// public void serialize(Object o, JsonGenerator jsonGenerator,
// SerializerProvider serializerProvider)
// throws IOException, JsonProcessingException
// {
// jsonGenerator.writeString("");
// }
// });
return objectMapper;
}
}
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版权声明:本文为CSDN博主「Zakza」的原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接及本声明。
原文链接:https://blog.csdn.net/qq_18453581/article/details/96437822