如何使用 JsonCreator 反序列化具有重载构造函数的类 [英] How to deserialize a class with overloaded constructors using JsonCreator

问题描述

我正在尝试使用 Jackson 1.9.10 反序列化此类的实例:

I am trying to deserialize an instance of this class using Jackson 1.9.10:

public class Person {

@JsonCreator
public Person(@JsonProperty("name") String name,
        @JsonProperty("age") int age) {
    // ... person with both name and age
}

@JsonCreator
public Person(@JsonProperty("name") String name) {
    // ... person with just a name
}
}

当我尝试这个时，我得到以下内容

When I try this I get the following

基于属性的创建者冲突:已经... {interface org.codehaus.jackson.annotate.JsonCreator @org.codehaus.jackson.annotate.JsonCreator()}]，遇到...，注解:{interface org.codehaus.jackson.annotate.JsonCreator @org.codehaus.jackson.annotate.JsonCreator()}]

Conflicting property-based creators: already had ... {interface org.codehaus.jackson.annotate.JsonCreator @org.codehaus.jackson.annotate.JsonCreator()}], encountered ... , annotations: {interface org.codehaus.jackson.annotate.JsonCreator @org.codehaus.jackson.annotate.JsonCreator()}]

有没有办法使用 Jackson 反序列化具有重载构造函数的类?

Is there a way to deserialize a class with overloaded constructors using Jackson?

谢谢

推荐答案

尽管没有正确记录，但每种类型只能有一个创建者.您可以在类型中拥有任意数量的构造函数，但其​​中只有一个应该带有 @JsonCreator 注释.

Though its not properly documented, you can only have one creator per type. You can have as many constructors as you want in your type, but only one of them should have a @JsonCreator annotation on it.

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