如何使用Jackson从单个文件加载多个YAML结构

Question

使用这些：

import com.fasterxml.jackson.dataformat.yaml.YAMLMapper;
import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
import com.fasterxml.jackson.dataformat.yaml.YAMLGenerator;

我有一个文件，里面有两个YAML结构

version: 1.0
time:
  day: 20
  second: 15
  minute: 39
  hour: 19
  weekday: 4
  month: 1
  year: 1999
ironman: true
rulesets:
  - Xcom1Ruleset
  - XcomUtil_Always_Daytime
  - XcomUtil_Skyranger_Weapon_Slot
  - XcomUtil_Starting_Defensive_Improved_Base
  - XcomUtil_Pistol_Auto_Shot
---
alienStrategy:
(...)

我试过这个：

directives = mapper.readValue(fileIn, Directives.class);
savegame = mapper.readValue(fileIn, Savegame.class);

但是我收到了这个例外：

com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "name" (class app.Savegame), not marked as ignorable (24 known properties: "globeZoom", "bases", "monthsPassed", "warned", "discovered", "incomes", "rng", "funds", "globeLat", "maintenance", "expenditures", "ufos", "graphCountryToggles", "ids", "alienStrategy", "difficulty", "researchScores", "graphRegionToggles", "globeLon", "regions", "alienMissions", "graphFinanceToggles", "countries", "deadSoldiers"])
 at [Source: C:\Users\Luis\Desktop\in.txt; line: 1, column: 12] (through reference chain: app.Savegame["name"])
    at com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException.from(UnrecognizedPropertyException.java:62)
    at com.fasterxml.jackson.databind.DeserializationContext.handleUnknownProperty(DeserializationContext.java:833)
    at com.fasterxml.jackson.databind.deser.std.StdDeserializer.handleUnknownProperty(StdDeserializer.java:1096)
    at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.handleUnknownProperty(BeanDeserializerBase.java:1467)
    at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.handleUnknownVanilla(BeanDeserializerBase.java:1445)
    at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:282)
    at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:140)
    at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:3789)
    at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2731)
    at app.Main.main(Main.java:34)

它映射的Directive.java组件好了，但是Savegame.java（带有alienStrategy和更多属性）试图映射，它失败了。

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