Jackson: Difference between revisions
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The Streaming API reads and writes JSON as a series of discrete events, in a mode called "incremental parsing/generation". The concepts behind the Streaming API are similar to those of [[JAXP_StAX#jackson|StAX]]. The Streaming API has the lowest overhead and its the fastest of all methods. The other two methods ([[#Tree_Model|Tree Model]] and [[#Data_Binding|Data Binding]]) are built in top of it. | The Streaming API reads and writes JSON as a series of discrete events, in a mode called "incremental parsing/generation". The concepts behind the Streaming API are similar to those of [[JAXP_StAX#jackson|StAX]]. The Streaming API has the lowest overhead and its the fastest of all methods. The other two methods ([[#Tree_Model|Tree Model]] and [[#Data_Binding|Data Binding]]) are built in top of it. | ||
The central elements of the Streaming API are <tt>org.codehaus.jackson.JsonParser</tt> for reading and <tt>org.codehaus.jackson.JsonGenerator</tt> for writing. | |||
==Tree Model== | ==Tree Model== |
Revision as of 17:16, 25 February 2017
External
- Jackson JSON Processor Wiki http://wiki.fasterxml.com/JacksonHome
- Jackson in Five Minutes http://wiki.fasterxml.com/JacksonInFiveMinutes
- Jackson JSON Tutorial http://www.baeldung.com/jackson
Internal
Overview
Jackson is a Java library for processing JSON data format. It has support for marshaling and unmarshalling Java to and from JSON. It has a JAX-RS content handler that can automatically convert between Java objects and JSON, and vice-versa. It can generate JSON schemas from a Java object model.
JSON Processing Methods
Jackson offers three alternative methods for processing JSON:
Streaming API
The Streaming API reads and writes JSON as a series of discrete events, in a mode called "incremental parsing/generation". The concepts behind the Streaming API are similar to those of StAX. The Streaming API has the lowest overhead and its the fastest of all methods. The other two methods (Tree Model and Data Binding) are built in top of it.
The central elements of the Streaming API are org.codehaus.jackson.JsonParser for reading and org.codehaus.jackson.JsonGenerator for writing.
Tree Model
Tree model is arguably the most flexible of all three methods.
Data Binding
Data Binding is arguably the most convenient of all three methods.
JSON to Java
Java to JSON
TODO and delete: https://home.feodorov.com:9443/wiki/Wiki.jsp?page=Jackson