GSON

General

Category
Free
Tag
JSON
License
Apache License, Version 2.0
Registered
Jul 5, 2014
Favorites
7
Link
https://github.com/google/gson
See also
Stag
Flatbuffers vs Gson Parsing Demo
Flatten
Jackson jr
Ason

Additional

Language
Java
Version
gson-parent-2.8.0 (Oct 27, 2016)
Created
Mar 20, 2015
Updated
Oct 18, 2018
Owner
Google (google)
Contributors
Vladislav Bauer (vbauer)
egor-n
Jerzy Chałupski (chalup)
roman-mazur
Dorvaryn
Michael Evans (MichaelEvans)
swankjesse
pjdelport
Jake Wharton (JakeWharton)
Ryan Harter (rharter)
juandiana
inder123
joel-leitch
naturalwarren
haskellcamargo
轻微 (zzz40500)
Eric Cochran (NightlyNexus)
ytRino
Show all (84)84
Activity
Badge
Generate
Download
Source code

Promotion

Gson

Gson is a Java library that can be used to convert Java Objects into their JSON representation. It can also be used to convert a JSON string to an equivalent Java object. Gson can work with arbitrary Java objects including pre-existing objects that you do not have source-code of.

There are a few open-source projects that can convert Java objects to JSON. However, most of them require that you place Java annotations in your classes; something that you can not do if you do not have access to the source-code. Most also do not fully support the use of Java Generics. Gson considers both of these as very important design goals.

Goals

  • Provide simple toJson() and fromJson() methods to convert Java objects to JSON and vice-versa
  • Allow pre-existing unmodifiable objects to be converted to and from JSON
  • Extensive support of Java Generics
  • Allow custom representations for objects
  • Support arbitrarily complex objects (with deep inheritance hierarchies and extensive use of generic types)

Download

Gradle:

dependencies {
  implementation 'com.google.code.gson:gson:2.8.5'
}

Maven:

<dependency>
  <groupId>com.google.code.gson</groupId>
  <artifactId>gson</artifactId>
  <version>2.8.5</version>
</dependency>

Gson jar downloads are available from Maven Central.

Documentation

  • API Javadoc: Documentation for the current release
  • User guide: This guide contains examples on how to use Gson in your code.
  • Change log: Changes in the recent versions
  • Design document: This document discusses issues we faced while designing Gson. It also includes a comparison of Gson with other Java libraries that can be used for Json conversion

Please use the 'gson' tag on StackOverflow or the google-gson Google group to discuss Gson or to post questions.

Related Content Created by Third Parties

License

Gson is released under the Apache 2.0 license.

Copyright 2008 Google Inc.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Disclaimer

This is not an officially supported Google product.