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https://github.com/alibaba/fastjson

FASTJSON 2.0.x has been released, faster and more secure, recommend you upgrade.
https://github.com/alibaba/fastjson

android best-performance deserialization fastjson java json json-parser json-serialization json-serializer serialization

Last synced: 6 days ago
JSON representation

FASTJSON 2.0.x has been released, faster and more secure, recommend you upgrade.

Host: GitHub
URL: https://github.com/alibaba/fastjson
Owner: alibaba
License: apache-2.0
Created: 2011-11-03T06:58:52.000Z (about 13 years ago)
Default Branch: master
Last Pushed: 2024-07-16T07:35:37.000Z (4 months ago)
Last Synced: 2024-09-30T21:02:29.592Z (about 1 month ago)
Topics: android, best-performance, deserialization, fastjson, java, json, json-parser, json-serialization, json-serializer, serialization
Language: Java
Homepage: https://github.com/alibaba/fastjson2/wiki/fastjson_1_upgrade_cn
Size: 14.8 MB
Stars: 25,723
Watchers: 1,290
Forks: 6,504
Open Issues: 2,111
Metadata Files:
- Readme: README.md
- Contributing: CONTRIBUTING.md
- License: license.txt
- Security: SECURITY.md

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README

        
# fastjson

[![Java CI](https://github.com/alibaba/fastjson/actions/workflows/ci.yaml/badge.svg?branch=master)](https://github.com/alibaba/fastjson/actions/workflows/ci.yaml)

[![Codecov](https://codecov.io/gh/alibaba/fastjson/branch/master/graph/badge.svg)](https://codecov.io/gh/alibaba/fastjson/branch/master)

[![Maven Central](https://maven-badges.herokuapp.com/maven-central/com.alibaba/fastjson/badge.svg)](https://maven-badges.herokuapp.com/maven-central/com.alibaba/fastjson/)

[![GitHub release](https://img.shields.io/github/release/alibaba/fastjson.svg)](https://github.com/alibaba/fastjson/releases)

[![License](https://img.shields.io/badge/license-Apache%202-4EB1BA.svg)](https://www.apache.org/licenses/LICENSE-2.0.html)

[![Gitpod Ready-to-Code](https://img.shields.io/badge/Gitpod-Ready--to--Code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/alibaba/fastjson) 

[![Fuzzing Status](https://oss-fuzz-build-logs.storage.googleapis.com/badges/fastjson2.svg)](https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:fastjson2)

[![QualityGate](https://quality-gate.com/backend/api/timeline?branchName=master&projectName=alibaba_fastjson)](https://quality-gate.com/dashboard/branches/7816#overview)

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 2.0.x](https://github.com/alibaba/fastjson2/releases) has been released, faster and more secure, we recommend you [upgrade](https://github.com/alibaba/fastjson2/wiki/fastjson_1_upgrade_cn) to the latest version.

### Fastjson Goals

 * Provide the best performance on the 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)

![fastjson](logo.jpg "fastjson")

## Documentation

- [Documentation Home](https://github.com/alibaba/fastjson/wiki)

- [Contributing Code](https://github.com/nschaffner/fastjson/blob/master/CONTRIBUTING.md)

- [Frequently Asked Questions](https://github.com/alibaba/fastjson/wiki/%E5%B8%B8%E8%A7%81%E9%97%AE%E9%A2%98)

- FASTJSON 1.x User Upgrade Guid [https://github.com/alibaba/fastjson2/wiki/fastjson_1_upgrade_cn](https://github.com/alibaba/fastjson2/wiki/fastjson_1_upgrade_cn

)

## Benchmark

* Eishay benchmark https://github.com/eishay/jvm-serializers/wiki

* fastjson2 benchmark [https://github.com/alibaba/fastjson2/wiki/fastjson_benchmark](https://github.com/alibaba/fastjson2/wiki/fastjson_benchmark)

## Download

- [maven][1]

- [the latest JAR][2]

[1]: https://repo1.maven.org/maven2/com/alibaba/fastjson/

[2]: https://search.maven.org/remote_content?g=com.alibaba&a=fastjson&v=LATEST

## Maven

```xml

    com.alibaba

    fastjson

    2.0.31

```

## Gradle via JCenter

``` groovy

compile 'com.alibaba:fastjson:2.0.28'

```

Please see this [Wiki Download Page][Wiki] for more repository info.

[Wiki]: https://github.com/alibaba/fastjson/wiki#download

### *License*

Fastjson is released under the [Apache 2.0 license](license.txt).

```

Copyright 1999-2020 Alibaba Group Holding Ltd.

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 the following link.

     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.

```