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Fastjson 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. Fastjson can work with arbitrary Java objects including pre-existing objects that you do not have source-code of.

Fastjson Goals

• Provide best performance in server side and android client.
• Provide simple toJSONString() and parseObject() 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).

Frequently Asked Questions

https://github.com/alibaba/fastjson/wiki/%E5%B8%B8%E8%A7%81%E9%97%AE%E9%A2%98

Download

android developer plz see Here

the latest JAR

or via Maven:

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>VERSION_CODE</version>
</dependency>

or via Gradle:

compile 'com.alibaba:fastjson:VERSION_CODE'

replace VERSION_CODE with real version name such as 1.2.21 released in Here or Here or Here.

Getting started

Samples : https://github.com/alibaba/fastjson/wiki/Samples-DataBind

Google JSON Style Guide

you can learn how to write JSON gracefully from here：https://google.github.io/styleguide/jsoncstyleguide.xml

Integrate Fastjson in Spring

https://github.com/alibaba/fastjson/wiki/%E5%9C%A8-Spring-%E4%B8%AD%E9%9B%86%E6%88%90-Fastjson