Jackson Tree Model: Difference between revisions
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=JSON to Java with Tree Model= | =JSON to Java with Tree Model= | ||
<tt>org.codehaus.jackson.map.ObjectMapper</tt> is the main API that builds trees from JSON content | <tt>org.codehaus.jackson.map.ObjectMapper</tt> is the main API that builds trees from JSON content. | ||
<pre> | <pre> | ||
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JsonNode root = om.readTree(is); | JsonNode root = om.readTree(is); | ||
</pre> | </pre> | ||
The trees consists of <tt>JsonNode</tt>s. Each node has one of the following types, coded as the <tt>JsonNodeType</tt> enum: | |||
* NULL | |||
* BOOLEAN | |||
* NUMBER | |||
* STRING | |||
* OBJECT | |||
* ARRAY | |||
* BINARY | |||
* POJO | |||
* MISSING | |||
==JSON to Java with Tree Model Code Example== | ==JSON to Java with Tree Model Code Example== | ||
Revision as of 23:02, 25 February 2017
Internal
Overview
This method converts a JSON document into a mutable in-memory tree representation of the JSON document. Tree model is arguably the most flexible of all three methods. The tree model is similar to the XML DOM.
JSON to Java with Tree Model
org.codehaus.jackson.map.ObjectMapper is the main API that builds trees from JSON content.
InputStream is = ... ObjectMapper om = new ObjectMapper(); JsonNode root = om.readTree(is);
The trees consists of JsonNodes. Each node has one of the following types, coded as the JsonNodeType enum:
- NULL
- BOOLEAN
- NUMBER
- STRING
- OBJECT
- ARRAY
- BINARY
- POJO
- MISSING