Java Jackson 中的 ObjectNode 和 JsonNode 有什么区别？
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What is the difference between ObjectNode and JsonNode in Hymanson?
提问by THIS USER NEEDS HELP
According to the documetation of JsonNode:
根据文档JsonNode：
Most mutators, however, need to be accessed through specific sub-classes (such as
ObjectNodeand ArrayNode).
然而，大多数 mutator 需要通过特定的子类（例如
ObjectNode和 ArrayNode）来访问。
However I am still confused since some stackoverflow answers seem to use them quite interchangeably. What different purpose do they serve?
但是我仍然很困惑，因为一些 stackoverflow 答案似乎可以互换使用它们。它们有什么不同的目的？
采纳答案by bhspencer
JsonNodeis a base class that ObjectNodeand ArrayNodeextend. JsonNoderepresents any valid Json structure where as ObjectNodeand ArrayNodeare particular implementations for objects (aka maps) and arrays, respectively.
JsonNode是一个基类，ObjectNode和ArrayNode延伸。JsonNode表示任何有效的 Json 结构，其中 asObjectNode和ArrayNode分别是对象（又名映射）和数组的特定实现。
ArrayNodehas specific methods for dealing with arrays such as get(index i)E.g. you cannot get an item at a specific index in a JsonNodeor ObjectNodebut you can in an ArrayNode.
ArrayNode有处理阵列具体方法如get(index i)例如你不能在在指定索引得到一个项目JsonNode或ObjectNode，但你可以在一个ArrayNode。
