Java 对JSON的解析不正确

我有HashMap：

public static volatile HashMap<String, GooglePlayGame> games = new HashMap<>();

然后我打开JSON文件：

{
  "GRID™ Autosport": {
    "Title": "GRID™ Autosport",
    "Last date of update": "11 December, 2019",
    "Current version": "1.6.1RC2-android",
    "Required Android": "no info",
    "Genre": "Racing",
    "Price": "10,00$",
    "IAP": "nothing",
    "Dev email": "googleplay@feralinteractive.com"
  }
}

{
  "FRAMED 2": {
    "Title": "FRAMED 2",
    "Last date of update": "11 July, 2019",
    "Current version": "1.1.1",
    "Required Android": "5.0+",
    "Genre": "Puzzle",
    "Price": "2,00$",
    "IAP": "nothing",
    "Dev email": "support+framed2@noodlecake.com"
  }
}

但我得到了错误“JSON标准只允许一个顶级值”

---

如何修复此问题？

这不是正确的JSON格式。这两个对象应该在一个列表

[{}，{}]

或一个对象

{{}，{}}

中，如何使用Gson修复它？我应该把我的游戏对象放到ArrayList或者什么？因为你在FileWriter中使用的是append模式（filename，true），所以看起来你只是在把JSON附加到文件中。在调用GSON.toJson（）之前是否创建了新的HashMap？我使用了GSON，切换到Jackson，现在它工作正常。在调用toJson之前，我没有创建新映射。我刚刚在这张地图上添加了所有新的对“键值”。每次添加后，我都会将映射的新版本记录到同一个json中。

{
  "GRID™ Autosport": {
    "Title": "GRID™ Autosport",
    "Last date of update": "11 December, 2019",
    "Current version": "1.6.1RC2-android",
    "Required Android": "no info",
    "Genre": "Racing",
    "Price": "10,00$",
    "IAP": "nothing",
    "Dev email": "googleplay@feralinteractive.com"
  }
}

{
  "FRAMED 2": {
    "Title": "FRAMED 2",
    "Last date of update": "11 July, 2019",
    "Current version": "1.1.1",
    "Required Android": "5.0+",
    "Genre": "Puzzle",
    "Price": "2,00$",
    "IAP": "nothing",
    "Dev email": "support+framed2@noodlecake.com"
  }
}