I have the following date field in my DTO class:
@JsonFormat(pattern="dd.MM.yyyy")
private LocalDateTime date;
I define the date format in my application.yml as shown below:
spring:
jackson:
date-format: "dd.MM.yyyy"
I am trying to use this format in my DTO field directly like below:
@JsonFormat(pattern="${spring.jackson.date-format}")
private LocalDateTime date;
Is it possible? Or do ı have to add a @Value field like below? I tried but cannot use this dateFormat in my date field.
@Value("${spring.jackson.date-format}")
private String dateFormat;
You have good tips here: https://www.baeldung.com/spring-boot-formatting-json-dates
Either configure the default format, like
spring.jackson.date-format=dd.MM.yyyy
or configure the serializer:
@Configuration
public class MyJsonConfig {
@Value("${spring.jackson.date-format}")
private String dateFormat;
@Bean
public Jackson2ObjectMapperBuilderCustomizer jsonCustomizer() {
return builder -> {
builder.simpleDateFormat(dateTimeFormat);
builder.serializers(new LocalDateSerializer(DateTimeFormatter.ofPattern(dateFormat)));
builder.serializers(new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(dateFormat)));
};
}
}
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