SpringBoot版本：
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.12.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
问题描述：
项目使用LocalDateTime作为日期类型，默认下，前端传参，后端返回的字符串形式如：2016-10-20T11:08:46
现在要求：
对应的日期字符串格式如下：2016-10-20 11:08:46，即将 T 删除
解决方案:
SpringBoot中使用Jackson2ObjectMapperBuilderCustomizer作为序列化，反序列化器，通过配置该类可以定制时期格式
代码如下：
@Configuration public class LocalDateTimeSerializerConfig { @org.springframework.beans.factory.annotation.Value("${spring.jackson.date-format:yyyy-MM-dd HH:mm:ss}") private String pattern; @Bean public LocalDateTimeDeserializer localDateTimeDeserializer() { return new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(pattern)); } @Bean public LocalDateTimeSerializer localDateTimeSerializer() { return new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(pattern)); } @Bean public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer() { return builder -> builder.deserializerByType(LocalDateTime.class, localDateTimeDeserializer()) .serializerByType(LocalDateTime.class, localDateTimeSerializer()); } }
原文：https://www.cnblogs.com/m2492565210/p/15005349.html