MyBatis 返回 Map 或 List＜Map＞时，时间类型数据，默认为LocalDateTime，响应给前端默认含有‘T‘字符

一、问题

MyBatis 返回 Map 或 List时，时间类型数据，默认为LocalDateTime
Springboot 响应给前端的LocalDateTime，默认含有’T’字符，如何统一配置去掉
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二、解决方案

1、pom.xml 增加依赖（2024.11.6 补充）

		<dependency>
            <groupId>com.fasterxml.jackson.datatype</groupId>
            <artifactId>jackson-datatype-jsr310</artifactId>
            <version>2.12.7</version>
        </dependency>

2、创建配置类，对ObjectMapper对象进行定制，指定日期类对应的序列化与反序列化处理对象，如

@Configuration
public class LocalDateTimeFormatConfig {
    private static final String DEFAULT_DATE_TIME_PATTERN = "yyyy-MM-dd HH:mm:ss";
    private static final String DEFAULT_DATE_PATTERN = "yyyy-MM-dd";
    private static final String DEFAULT_TIME_PATTERN = "HH:mm:ss";

    @Bean
    @Primary
    public ObjectMapper objectMapper(){
        ObjectMapper objectMapper = new ObjectMapper();
        JavaTimeModule javaTimeModule = new JavaTimeModule();
        javaTimeModule.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_PATTERN)));
        javaTimeModule.addSerializer(LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_PATTERN)));
        javaTimeModule.addSerializer(LocalTime.class, new LocalTimeSerializer(DateTimeFormatter.ofPattern(DEFAULT_TIME_PATTERN)));
        javaTimeModule.addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_TIME_PATTERN)));
        javaTimeModule.addDeserializer(LocalDate.class, new LocalDateDeserializer(DateTimeFormatter.ofPattern(DEFAULT_DATE_PATTERN)));
        javaTimeModule.addDeserializer(LocalTime.class, new LocalTimeDeserializer(DateTimeFormatter.ofPattern(DEFAULT_TIME_PATTERN)));
        objectMapper.registerModule(javaTimeModule);
        return objectMapper;
    }
}