是否可以在Java中将JSON反序列化为树? [英] Is it possible to deserialize JSON to a tree in Java?

问题描述

我有来自Facebook的JSON响应，我不想将其反序列化为自定义Java对象.主要是因为无法保证其API会保持稳定.一旦他们更改了它，我的反序列化肯定会失败.

I have JSON response from Facebook, which I don't want to deserialize into a custom Java object. Mostly because there is no guarantee that their API will stay stable. Once they change it my deserialization will fail for sure.

我想要的是将其JSON数据反序列化为HashMap<String, Object>，其中Object可能是String或HashMap.在PHP中，它称为关联数组，它是由 json_decode() 函数生成的.可以在Java中做同样的事情吗?

What I want is to deserialize their JSON data into HashMap<String, Object>, where Object may be a String or a HashMap. In PHP it's called associative array and it is produced by json_decode() function. Is it possible to do the same in Java?

推荐答案

当然.看看杰克逊，它可以很容易地做到这一点，例如

Certainly. Have a look at Jackson, it can do this easily enough, e.g.

ObjectMapper mapper = new ObjectMapper();
Map<String, Object> userData = mapper.readValue(jsonData, Map.class);

生成的Map将嵌套所需深度的多层.

The resulting Map will nest as many levels deep as is required.

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