如何在JsonNode中创建插入新节点？

问题描述

我创建了一个新的JsonNode

I have a new JsonNode that I created

JsonNode jNode = new ObjectCodec().createObjectNode();

使用此节点，我如何在其中添加键值对，以便构建此新节点新的价值观？我在提到了使用

with this node, how do I then add key value pairs within so that I can construct this new node with the new values? What I read in http://www.cowtowncoder.com/blog/archives/2011/08/entry_460.html mentioned about using

jNode.with("newNode").put("key1","value1");

但是查看Jackson的JsonNode（v1.8）的API并没有显示任何方法。

But looking at the APIs for Jackson's JsonNode (v1.8) does not show any method as such.

推荐答案

这些方法在 ObjectNode 中：该分区是这样的读取操作包含在 JsonNode 中，但 ObjectNode 和 ArrayNode 。

These methods are in ObjectNode: the division is such that most read operations are included in JsonNode, but mutations in ObjectNode and ArrayNode.

请注意，您只需将第一行更改为：

Note that you can just change first line to be:

ObjectNode jNode = mapper.createObjectNode();
// version ObjectMapper has should return ObjectNode type

或

ObjectNode jNode = (ObjectNode) objectCodec.createObjectNode();
// ObjectCodec is in core part, must be of type JsonNode so need cast

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