不需要自定义解串器。一个聪明的@JsonTypeInfo会成功的。
请参阅下面的类和接口:
@JsonTypeInfo(use = Id.NAME, include = As.WRAPPER_OBJECT)
@JsonSubTypes({ @Type(value = ApplicationIcon.class, name = "application"),
@Type(value = FolderIcon.class, name = "folder") })
public interface Icon {
}
@JsonRootName("application")
public class ApplicationIcon implements Icon {
public String displayName;
public String bundleId;
// Getters and setters ommited
}
@JsonRootName("folder")
public class FolderIcon implements Icon {
public String some;
public Integer num;
// Getters and setters ommited
}
public class IconWrapper {
private List<Icon> icons;
// Getters and setters ommited
}
要反序列化您的 JSON,请执行以下操作:
String json = "{\"icons\":[{\"application\":{\"displayName\":\"Facebook\",\"bundleId\":\"com.facebook.com\"}},{\"folder\":{\"some\":\"value\",\"num\":3}}]}";
ObjectMapper mapper = new ObjectMapper();
IconWrapper iconWrapper = mapper.readValue(json, IconWrapper.class);