java - 是否可以使用 Jackson 将 JSON 字段分组到一个属性中？

Question

我想知道是否有任何方法可以将多个 JSON 字段反序列化为一个 Java 属性。例如。给定这个 JSON:

{
  "id" : "1",
  "name" : "Bartolo",
  "address" : "whatever",
  "phone" : "787312212"
}

将其反序列化为此类:

public class Person {

    public String id;
    public String name:

    @JsonProperty(names = {"address", "phone"}) //something like this
    public String moreInfo;

}

so moreInfo 等于“whatever, 787312212” 或类似的内容。

如果不使用自定义解串器，这可能吗？

Answer 1

您可以使用 @JsonCreator 注释，如下所示:

String json = {"id" : "1",  "name" : "Bartolo", "address" : "whatever", "phone" : "787312212" }

ObjectMapper mapper = new ObjectMapper();
Person person = mapper.readValue(json , Person.class);

并在 Person 类的构造函数中添加此

@JsonCreator
public Person(@JsonProperty("address") String address, @JsonProperty("phone") String phone) {
    this.moreInfo = address + "," phone;
}