英文:
Jackson Prevent Null Deserialization of Enum
问题
我正在尝试理解Jackson JSON反序列化如何理解空值。如果我有一个将单个枚举映射到JSON的情况：
{
"myEnum": null
}
映射到字段：
private myEnum enum;
并且myEnum如下所示，没有定义空值：
public enum myEnum {
foo("foo"),
bar("bar")
// ...
}
Jackson是否提供一种原生方式来阻止将null识别为此枚举的有效值，还是此验证需要在代码中进行管理？
英文:
I'm trying to understand how Jackson JSON deserialization understand null values. If I have a JSON that maps a single enum:
{
"myEnum": null
}
To a field
private myEnum enum;
and myEnum looks as follows with no null value defined:
public enum myEnum {
foo("foo"),
bar("bar")
// ...
}
Does Jackson offer a native way to prevent null from being recognized as a valid value for this enum, or does this validation need to be managed in code?
答案1
得分: 1
Jackson会像对待其他类型的值一样，只会放置null。如果您想要验证，可以稍后进行。不应在反序列化过程中执行验证。
英文:
Like with all other types of value, Jackson will just put null. If you want to validate, you can do it later. You shouldn't do it during deserialization.
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