阅读Jackson中的嵌入对象 [英] Read embedded object in Jackson
本文介绍了阅读Jackson中的嵌入对象的处理方法,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
我正在尝试使用Jackson 2.0-RC3读取遗留的JSON代码,但是我坚持使用嵌入式对象。
I'm trying to read a legacy JSON code using Jackson 2.0-RC3, however I'm stuck with an "embedded" object.
给出以下JSON :
{
"title": "Hello world!",
"date": "2012-02-02 12:23:34".
"author": "username",
"author_avatar": "http://.../",
"author_group": 123,
"author_prop": "value"
}
如何将其映射到以下结构中:
How can I map it into the following structure:
class Author {
@JsonPropery("author")
private String name;
@JsonPropery("author_avatar")
private URL avatar;
@JsonProperty("author_group")
private Integer group;
...
}
class Item {
private String title;
@JsonProperty("date")
private Date createdAt;
// How to map this?
private Author author;
}
我试图用 @JsonDeserialize
但似乎我必须以这种方式映射整个 Item
对象。
I was trying to do that with @JsonDeserialize
but it seems that I'd have to map the entire Item
object that way.
推荐答案
要处理嵌入对象,你应该使用 @JsonUnwrapped
- 它相当于Hibernate的 @Embeddable
/ @Embedded
。
To deal with an "embedded" object you should use @JsonUnwrapped
— it's an equivalent of the Hibernate's @Embeddable
/@Embedded
.
class Item {
private String title;
@JsonProperty("date")
private Date createdAt;
// How to map this?
@JsonUnwrapped
private Author author;
}
这篇关于阅读Jackson中的嵌入对象的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文