本文介绍了注释作为另一个注释的快捷方式?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如何创建一个注解,例如@DateOutput 等价于另一个Jackson注解,例如:
How can I create an annotation, such as @DateOutput that is equivalent with another Jackson annotation, such as:
@JsonFormat(shape=JsonFormat.Shape.STRING, pattern="yyyy-MM-dd'T'HH:mm:ss.SSSZ", timezone="UTC")
或者理想情况下,对一组注释,例如
Or ideally, to a set of annotations, such as
@JsonSerialize(using = XSerializer.class)
@JsonDeserialize(using = XDeserializer.class)
推荐答案
您可以使用 @JacksonAnnotationsInside
作为注释容器,如下所示:
You can use @JacksonAnnotationsInside
as a annotation container like follows:
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.FIELD, ElementType.METHOD})
@JacksonAnnotationsInside
@JsonFormat(shape=JsonFormat.Shape.STRING, pattern="yyyy-MM-dd'T'HH:mm:ss.SSSZ", timezone="UTC")
public @interface DateOutput {
}
并使用它来注释类中的字段,如下所示:
and use it to annotate the field in your class like so:
public class Foo {
@DateOutput
private Date date;
}
您还可以在单个注释下捆绑一组注释:
You can also bundle a set of annotations under a single annotation:
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.FIELD, ElementType.METHOD})
@JacksonAnnotationsInside
@JsonSerialize(using = XSerializer.class)
@JsonDeserialize(using = XDeserializer.class)
public @interface MyAnnotation {
}
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