如何在JsonNode中创建插入新节点? [英] how to create insert new nodes in JsonNode?

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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 http://www.cowtowncoder.com/blog/archives/2011/08/中读到的内容entry_460.html 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 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

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

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