jackson 时间的序列化踩坑

1. Date的全局序列化
```
spring:
  jackson:
    default-property-inclusion: non_null # 不处理空值
    date-format: yyyy-MM-dd HH:mm:ss
    time-zone: GMT+8
```

2. 单独设置LocalDateTime的序列化
pom.xml引入
```

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.15.2</version>
</dependency>
```
再搭配JsonFormat注解
```
public class Data {
		@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", locale = "GMT+8")
		@JsonSerialize(using = LocalDateTimeSerialize.class)
		@JsonDeserialize(using = LocalDateTimeDeserialize.class)
		private LocalDateTime date;
}
```

3. LocalDateTime、LocalDate的序列化
pom.xml引入
```

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.15.2</version>
</dependency>
```
全局注册
```
@Configuration
@ConditionalOnClass(JavaTimeModule.class)
public class JavaTimeAutoConfiguration {

@Bean
    @ConditionalOnProperty("spring.jackson.date-format")
    Jackson2ObjectMapperBuilderCustomizer customizeLocalDateTimeFormat(@Value("${spring.jackson.date-format}") String dateFormat){
        return jacksonObjectMapperBuilder -> {
            DateTimeFormatter formatter = DateTimeFormatter.ofPattern(dateFormat);

jacksonObjectMapperBuilder.serializerByType(LocalDateTime.class, new LocalDateTimeSerializer(formatter));
            jacksonObjectMapperBuilder.deserializerByType(LocalDateTime.class, new LocalDateTimeDeserializer(formatter));
        };
    }
}
```
使用
```
public class Data{
		@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", locale = "GMT+8")
		@JsonSerialize(using=LocalDateTimeSerialize.class)
		@JsonDeserialize(using=LocalDateTimeDeserialize.class)
		private LocalDateTime date;
}
```