枚举，如何在（反）序列化期间重命名？

Hi is it possible to change name of ENUM in Java? For example, I have enum -

您好可以在Java中更改ENUM的名称吗?例如,我有枚举 -

public enum CloudType {
    AZURE, OPENSTACK
}

And a class -

一堂课 -

public class Env{
   private CloudType cloudType;
}

And during JACKSON parsing, if I give -

在JACKSON解析期间,如果我给 -

{
  "cloudType":"AZURE"
}

{
  "cloudType":"azure"
}

It will give me an Env object with cloudType=AZURE ?

它会给我一个cloudType = AZURE的Env对象?

One thread is there (Jackson databind enum case insensitive), but really we need to do this much? Or

有一个线程(Jackson databind枚举不区分大小写),但我们真的需要这么做吗?要么

@XmlEnumValue("azure")
    AZURE("azure"),

will be enough?

会够的吗?

1 个解决方案

#1

You can decouple the Java names of the enum instances from their JSON representations.

您可以将枚举实例的Java名称与其JSON表示分离。

You should add a @JsonValue-annotated method to your enum CloudType to tell Jackson which value to use when reading/writing JSON. For that you also need a constructor to initialize this value.

您应该在枚举CloudType中添加@JsonValue注释方法,以告知Jackson在读/写JSON时使用哪个值。为此,您还需要一个构造函数来初始化此值。

Like this:

public enum CloudType {
    AZURE("azure"),
    OPENSTACK("openstack");

    private final String value;

    private CloudType(String value) {
        this.value = value;
    }

    @JsonValue
    public String getValue() {
        return value;
    }
}

Then Jackson will serialize CloudType.AZURE to "azure",
and deserialize "azure" to CloudType.AZURE.

然后Jackson将序列化CloudType.AZURE为“azure”,并将“azure”反序列化为CloudType.AZURE。

#1