I have date in json like:
{
"date": "04/22/2022 16:01:01"
}
and the class:
public class Foo{
@JsonDeserialize(using = LocalDateTimeDeserializer.class)
@JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "dd/MM/yyyy HH:mm:ss")
private LocalDateTime date;
}
where everything work fine.
It is posible to have annotation with @JsonDeserialize
and @JsonFormat
in it?
I was trying something like this
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.ANNOTATION_TYPE, ElementType.METHOD, ElementType.FIELD, ElementType.TYPE, ElementType.PARAMETER})
@JsonDeserialize(using = LocalDateTimeDeserializer.class)
@JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "dd/MM/yyyy HH:mm:ss")
public @interface MyLocalDateTimeAnnotation{
}
Where class coud look like this:
public class Foo{
@MyLocalDateTimeAnnotation
private LocalDateTime date;
}
But it doesnt work.
You need to use @JacksonAnnotationsInside
Meta-annotation (annotations used on other annotations) used for indicating that instead of using target annotation (annotation annotated with this annotation), Jackson should use meta-annotations it has. This can be useful in creating "combo-annotations" by having a container annotation, which needs to be annotated with this annotation as well as all annotations it 'contains'.
Example:
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.ANNOTATION_TYPE, ElementType.METHOD, ElementType.FIELD, ElementType.TYPE, ElementType.PARAMETER})
@JsonDeserialize(using = LocalDateTimeDeserializer.class)
@JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "dd/MM/yyyy HH:mm:ss")
@JacksonAnnotationsInside
public @interface MyLocalDateTimeAnnotation {
}
public class Foo{
@MyLocalDateTimeAnnotation
private LocalDateTime date;
}