JSON Schema介绍1

左手的ㄟ右手 2021-09-02 03:01 316阅读 0赞

## 一、介绍 ##

json schema是用来**描述**、**校验**json文档（json数据结构）的一个标准。

*  官网：[http://json-schema.org/][http_json-schema.org]
 *  github：[https://github.com/json-schema-org/json-schema-spec][https_github.com_json-schema-org_json-schema-spec]
 *  google groups：[https://groups.google.com/g/json-schema?pli=1][https_groups.google.com_g_json-schema_pli_1]

**1、JSON Schema是什么：**

**1）JSON Schema**

*  Describes your existing data format(s). （json schema用来描述json文档）
 *  Provides clear human- and machine- readable documentation. （json schema是机器、人可读的文档）
 *  Validates data which is useful for:
    
     *  Automated testing. 
     *  Ensuring quality of client submitted data.

**2）JSON Hyper-Schema**

*  Make any JSON format a hypermedia format with no constraints on document structure
 *  Allows use of [URI Templates][] with instance data
 *  Describe client data for use with links using JSON Schema.
 *  Recognizes collections and collection items.

可以看到JSON Schema包含两大块功能。我们常用的是第一个，下面我们也是重点介绍第一个。

**2、JSON Schema 规范：**

2019年9月16日发布了（最新）：2019-09（以前称为draft-08）！

**1）命名规范和序列号：**

IETF Internet-Drafts (I-Ds) 中使用了编写者姓名+序列号方式命名，但是序列号会随着新的一个编辑者而重置。Meta-schemas采用draft-nn的方式命名，为了不引起混乱，从draft-08开始，按出版的年和月确定元模式。

<table> 
 <tbody> 
 <tr> 
 <th>IETF identifiers</th> 
 <th>meta‑schema identifiers</th> 
 <th>common name</th> 
 <th>notes</th> 
 </tr> 
 <tr> 
 <td><a href="https://tools.ietf.org/html/draft-zyp-json-schema-00" rel="nofollow">draft‑zyp‑json‑schema‑00</a></td> 
 <td>draft‑00</td> 
 <td>Draft 0</td> 
 <td>due to a markup error, this draft was replaced by&nbsp;draft‑01&nbsp;on the same day</td> 
 </tr> 
 <tr> 
 <td><a href="https://tools.ietf.org/html/draft-zyp-json-schema-01" rel="nofollow">draft‑zyp‑json‑schema‑01</a></td> 
 <td>draft‑01</td> 
 <td>Draft 1</td> 
 <td>&nbsp;</td> 
 </tr> 
 <tr> 
 <td><a href="https://tools.ietf.org/html/draft-zyp-json-schema-02" rel="nofollow">draft‑zyp‑json‑schema‑02</a></td> 
 <td>draft‑02</td> 
 <td>Draft 2</td> 
 <td>&nbsp;</td> 
 </tr> 
 <tr> 
 <td><a href="https://tools.ietf.org/html/draft-zyp-json-schema-03" rel="nofollow">draft‑zyp‑json‑schema‑03</a></td> 
 <td>draft‑03</td> 
 <td>Draft 3</td> 
 <td>&nbsp;</td> 
 </tr> 
 <tr> 
 <td><a href="https://tools.ietf.org/html/draft-zyp-json-schema-04" rel="nofollow">draft‑zyp‑json‑schema‑04</a> <a href="https://tools.ietf.org/html/draft-fge-json-schema-validation-00" rel="nofollow">draft‑fge‑json‑schema‑validation‑00</a> <a href="https://tools.ietf.org/html/draft-luff-json-hyper-schema-00" rel="nofollow">draft‑luff‑json‑hyper‑schema‑00</a> <a href="https://tools.ietf.org/html/draft-pbryan-zyp-json-ref-03" rel="nofollow">draft‑pbryan‑zyp‑json‑ref‑03</a></td> 
 <td>draft‑04</td> 
 <td>Draft 4</td> 
 <td>json‑ref&nbsp;drafts&nbsp;00‑02&nbsp;were all published between&nbsp;json‑schema‑03&nbsp;and&nbsp;json‑schema‑04</td> 
 </tr> 
 <tr> 
 <td><a href="https://tools.ietf.org/html/draft-wright-json-schema-00" rel="nofollow">draft‑wright‑json‑schema‑00</a> <a href="https://tools.ietf.org/html/draft-wright-json-schema-validation-00" rel="nofollow">draft‑wright‑json‑schema‑validation‑00</a> <a href="https://tools.ietf.org/html/draft-wright-json-schema-hyperschema-00" rel="nofollow">draft‑wright‑json‑schema‑hyperschema‑00</a></td> 
 <td>Draft 5</td> 
 <td>meta‑schemas not changed, so "draft‑05" is really&nbsp;draft‑04 Milestone:&nbsp;<a href="https://github.com/json-schema-org/json-schema-spec/milestone/1" rel="nofollow">draft-5 (2016-10-13)</a></td> 
 </tr> 
 <tr> 
 <td><a href="https://tools.ietf.org/html/draft-wright-json-schema-01" rel="nofollow">draft‑wright‑json‑schema‑01</a> <a href="https://tools.ietf.org/html/draft-wright-json-schema-validation-01" rel="nofollow">draft‑wright‑json‑schema‑validation‑01</a> <a href="https://tools.ietf.org/html/draft-wright-json-schema-hyperschema-01" rel="nofollow">draft‑wright‑json‑schema‑hyperschema‑01</a></td> 
 <td>draft‑06</td> 
 <td>Draft 6</td> 
 <td>Milestones:&nbsp;<a href="https://github.com/json-schema-org/json-schema-spec/milestone/2" rel="nofollow">draft-6</a>,&nbsp;<a href="https://github.com/json-schema-org/json-schema-spec/milestone/4" rel="nofollow">Meta-schema draft-06</a></td> 
 </tr> 
 <tr> 
 <td><a href="https://tools.ietf.org/html/draft-handrews-json-schema-00" rel="nofollow">draft‑handrews‑json‑schema‑00</a> <a href="https://tools.ietf.org/html/draft-handrews-json-schema-validation-00" rel="nofollow">draft‑handrews‑json‑schema‑validation‑00</a> <a href="https://tools.ietf.org/html/draft-handrews-json-schema-hyperschema-00" rel="nofollow">draft‑handrews‑json‑schema‑hyperschema‑00</a> <a href="https://tools.ietf.org/html/draft-handrews-relative-json-pointer-00" rel="nofollow">draft‑handrews‑relative‑json‑pointer‑00</a></td> 
 <td>draft‑07</td> 
 <td>Draft 7</td> 
 <td>the&nbsp;draft‑handrews‑*‑01&nbsp;drafts were bugfixes and/or clarifications without meta‑schema or functional changes Milestone:&nbsp;<a href="https://github.com/json-schema-org/json-schema-spec/milestone/5" rel="nofollow">draft-07</a></td> 
 </tr> 
 <tr> 
 <td><a href="https://tools.ietf.org/html/draft-handrews-json-schema-01" rel="nofollow">draft‑handrews‑json‑schema‑01</a> <a href="https://tools.ietf.org/html/draft-handrews-json-schema-validation-01" rel="nofollow">draft‑handrews‑json‑schema‑validation‑01</a> <a href="https://tools.ietf.org/html/draft-handrews-json-schema-hyperschema-01" rel="nofollow">draft‑handrews‑json‑schema‑hyperschema‑01</a> <a href="https://tools.ietf.org/html/draft-handrews-relative-json-pointer-01" rel="nofollow">draft‑handrews‑relative‑json‑pointer‑01</a></td> 
 </tr> 
 <tr> 
 <td><a href="https://tools.ietf.org/html/draft-handrews-json-schema-02" rel="nofollow">draft‑handrews‑json‑schema‑02</a> <a href="https://tools.ietf.org/html/draft-handrews-json-schema-validation-02" rel="nofollow">draft‑handrews‑json‑schema‑validation‑02</a> <a href="https://tools.ietf.org/html/draft-handrews-json-schema-hyperschema-02" rel="nofollow">draft‑handrews‑json‑schema‑hyperschema‑02</a> <a href="https://tools.ietf.org/html/draft-handrews-relative-json-pointer-02" rel="nofollow">draft‑handrews‑relative‑json‑pointer‑02</a></td> 
 <td>2019‑09</td> 
 <td>Draft 8</td> 
 <td>Milestone:&nbsp;<a href="https://github.com/json-schema-org/json-schema-spec/milestone/6" rel="nofollow">draft-08</a></td> 
 </tr> 
 <tr> 
 <td>(TBD, probably only a subset of the documents)</td> 
 <td>bugfixes and/or clarifications, no functional changes Milestone:&nbsp;<a href="https://github.com/json-schema-org/json-schema-spec/milestone/8" rel="nofollow">draft-08-patch-1</a></td> 
 </tr> 
 <tr> 
 <td>(TBD)</td> 
 <td>(TBD)</td> 
 <td>Draft 9</td> 
 <td>Milestone:&nbsp;<a href="https://github.com/json-schema-org/json-schema-spec/milestone/7" rel="nofollow">draft-09</a></td> 
 </tr> 
 </tbody> 
</table>

**2）older drafts：**

*  [2019-09 (formerly known as Draft 8)][2019-09 _formerly known as Draft 8]
 *  [Draft 7][]
    
     *  [Obsolete Draft 7 Documents][]
 *  [Draft 6][]
 *  [Draft 5][]
 *  [Draft 4][]
 *  [Draft 3][]
 *  [Draft 2][]
 *  [Draft 1][]
 *  [Draft 0][]

详情见：[http://json-schema.org/specification-links.html][http_json-schema.org_specification-links.html]

### 3、标准化之路： ###

JSON Schema项目打算将所有四个draft（草案）系列推广到RFC状态。目前，我们正在继续完善自己发布的nternet-Drafts。下一步将是获得IETF工作组通过的草案。

*  [JSON Schema (core)][JSON Schema _core]
 *  [JSON Schema Validation][]
 *  [JSON Hyper-Schema][]
 *  [Relative JSON Pointers][]

**补充**：关于IETF和RFC的相关知识见：[https://blog.csdn.net/liuxiao723846/article/details/108553456][https_blog.csdn.net_liuxiao723846_article_details_108553456]

## 二、实现 ##

官网连接：[http://json-schema.org/implementations.html][http_json-schema.org_implementations.html]

根据上面”json schema是什么“可以得出，JSON Schema主要用来定义以下两个标准：

*  描述json文档：根据json数据文档（或者其他），**生成**对应的json schema；
 *  校验json文档：根据json schema对json数据进行**校验**；

注：*原始json文档称作instance，用于描述、校验该json文档称为schema（本身也是一个json） 。这里的描述指的是双向的，即：通过json生成json schema，也可以通过json schema 生成其他的组件（web UI...）*

以下实现用不同的语言编写，并且支持该规范的至少一个最新版本的一部分或全部。

### 1、校验： ###

根据json schema 对 json文档数据进行校验。

![20200914101309732.png][]

*  .NET
    
     *  [Json.NET Schema][] *2019-09, draft-07, -06, -04, -03 *(AGPL-3.0-only)
     *  [Manatee.Json][] *2019-09, draft-07, -06, -04 *(MIT)
 *  C
    
     *  [WJElement][] *draft-04, -03 *Draft-06+ progress: issue [17][] (LGPL-3.0)
 *  C++
    
     *  [f5-json-schema][] *draft-07 *(Boost Software License 1.0)
     *  [JSON schema validator for JSON for Modern C++][JSON schema validator for JSON for Modern C] *draft-07 *(MIT)
     *  [Valijson][] *draft-07 *header-only library, works with many JSON parser implementations (BSD-2-Clause)
 *  Clojure
    
     *  [jinx][] *draft-07 *(MIT)
     *  [json-schema][] *draft-07 *(Apache License, Version 2.0)
 *  Common Lisp
    
     *  [json-schema][json-schema 1] *2019-09, draft-04, -06, -07 *(LGPL)
 *  Elixir
    
     *  [Elixir JSON Schema validator][] *draft-04 *Draft-06+ progress: issue [24][]; branch [multi-draft-support][] (MIT)
     *  [JsonXema][] *draft-07, -06, -04 *(MIT)
 *  Go
    
     *  [gojsonschema][] *draft-07, -06, -04 *(Apache 2.0)
     *  [santhosh-tekuri/jsonschema][santhosh-tekuri_jsonschema] *draft-07, -06, -04 *(BSD-3-Clause)
     *  [qri-io/jsonschema][qri-io_jsonschema] *2019-09, draft-07 *includes custom validator support, rich error returns (MIT)
 *  Java
    
     *  [Snow][] *2019-09, draft-07, -06 *Uses Maven for the project and Gson under the hood. (GNU Affero General Public License v3.0)
     *  [everit-org/json-schema][everit-org_json-schema] *draft-07, -06, -04 *(Apache License 2.0)
     *  [Justify][] *draft-07, -06, -04 *(Apache License 2.0)
     *  [networknt/json-schema-validator][networknt_json-schema-validator] *draft-07, -06, -04 *Support OpenAPI 3.0 with Jackson parser (Apache License 2.0)
 *  Kotlin
    
     *  [Medeia-validator][] *draft-07, -06, -04 *streaming validator for Kotlin and Java clients; works with Jackson and Gson (Apache License 2.0)
 *  JavaScript
    
     *  [ajv][] *draft-07, -06, -04 *for Node.js and browsers - supports [custom keywords][] and [$data reference][data reference] (MIT)
     *  [djv][] *draft-06, -04 *for Node.js and browsers (MIT)
     *  [Hyperjump JSV][] *2019-09, draft-07, -06, -04 *Built for Node.js and browsers. Includes support for custom vocabularies. (MIT)
     *  [vue-vuelidate-jsonschema][] *draft-06 *(MIT)
     *  [@cfworker/json-schema][cfworker_json-schema] *2019-09, draft-07, -06, -04 *Built for Cloudflare workers, browsers, and Node.js (MIT)
 *  Perl
    
     *  [JSON::Validator][JSON_Validator] *draft-07, -06, -04 *(The Artistic License 2.0 (GPL Compatible))
     *  [JSON::Schema::Draft201909][JSON_Schema_Draft201909] *2019-09 *(GNU General Public License, Version 1 + The Artistic License 1.0)
 *  PHP
    
     *  [Opis Json Schema][] *draft-07, -06 *(Apache License 2.0)
     *  [Swaggest Json Schema][] *draft-07, -06, -04 *(MIT)
 *  Python
    
     *  [jsonschema][] *draft-07, -06, -04, -03 *(MIT)
     *  [fastjsonschema][] *draft-07, -06, -04 *Great performance thanks to code generation. (BSD-3-Clause)
     *  [jsonschema-rs][] *draft-07, -06, -04 *Python bindings to Rust’s jsonschema crate (MIT)
 *  Ruby
    
     *  [JSONSchemer][] *draft-07, -06, -04 *(MIT)
 *  Rust
    
     *  [jsonschema-rs][jsonschema-rs 1] *draft-07, -06, -04 *Fast due to compiling schema into a validation tree (MIT)
 *  Objective-C
    
     *  [DSJSONSchemaValidation][] *draft-07, -06, -04 *(MIT)
 *  Lua/LuaJIT
    
     *  [lua-resty-jsonschema][] *draft-07, -06, -04 *(MIT)
 *  Web (Online)
    
     *  [Hyperjump JSV][Hyperjump JSV 1] *2019-09, draft-07, -06, -04 *Supports multiple schemas and multiple instances
     *  [JSON Schema Validator][] *2019-09, draft-07, -06, -04, -03*
     *  [JSON Schema Lint][] *draft-07, -06, -04, -03, -02, -01*
     *  [ExtendsClass's JSON Schema Validator][ExtendsClass_s JSON Schema Validator] *draft-07*
 *  Command Line
    
     *  [ajv-cli][] *draft-07, -06, -04 *(MIT)
     *  [Polyglottal JSON Schema Validator][] *draft-06, -04 *can be used with YAML and many other formats besides JSON (MIT)
     *  [yajsv][] *draft-07, -06, -04 *wraps [xeipuuv/gojsonschema][gojsonschema] (MIT)

### 2、生成json schema： ###

根据json文档（或者其他数据类型，如java bean），生成对应的json schema。

**2.1）****根据json文档生成json schema：**

*  Java
    
     *  [saasquatch/json-schema-inferrer][saasquatch_json-schema-inferrer] *draft-07, -06, -04* (Apache 2.0) - Java library for inferring JSON Schemas from one or multiple JSON samples.
 *  Scala
    
     *  [Schema Guru][] (Apache 2.0) - CLI util, Spark Job and Web UI for deriving JSON Schemas out of corpus of JSON instances; see issue [178][] for progress towards draft-06+ support
 *  Clojure
    
     *  [luposlip/json-schema][json-schema] (Apache 2.0) - infer JSON Schema from Clojure data
 *  Online (web tool)
    
     *  [jsonschema.net][] - generates schemas from example data
     *  [quicktype.io][] - infer JSON Schema from samples, and generate TypeScript, C++, go, Java, C\#, Swift, etc. types from JSON Schema

**2.2）根据code生成json schema：**

*  .NET
    
     *  [Json.NET][Json.NET Schema] (AGPL-3.0) - generates schemas from .NET types
     *  [NJsonSchema][] - (Ms-PL) - generates schemas from .NET types, see issue [574][] for draft-06+ support progress
 *  PHP
    
     *  [Liform][] (MIT) - generates schemas from Symfony forms
 *  TypeScript
    
     *  [typescript-json-schema][]
 *  Python
    
     *  [Pydantic][] (MIT) - generates schemas from Python models based on Python 3.6+ type hints.
 *  Java
    
     *  [jsonschema-generator][] (Apache 2.0) - generates schemas from Java types *supports Draft 7 and Draft 2019-09*
 *  Scala
    
     *  [scala-jsonschema][] (Apache 2.0) - generates schemad out of Scala case classes

### 3、根据json schema生成其他组件 ###

我们可以定义一个json schema的文档，通过该文档来生成其他组件（java bean、web界面...）

**3.1）生成其他类型数据：**

*  Delphi
    
     *  [DJsonSchema][] (MIT) - JSON Schema reader and code generator for Delphi.
 *  Elm
    
     *  [json-schema-to-elm][] - generates Elm types, JSON decoders+encoders, and fuzz tests from one or more JSON Schema files, using [dragonwasrobot/json\_schema][dragonwasrobot_json_schema] *supports Draft 7*
 *  Java
    
     *  [jsonCodeGen][] (MIT) - Groovy based generation tasks from JSON schema. Already includes templates/generators for Java Beans, Swagger specification files and PlantUML diagrams.
 *  Online (web tool)
    
     *  [quicktype.io][] - infer JSON Schema from samples, and generate TypeScript, C++, go, Java, C\#, Swift, etc. types from JSON Schema
 *  PHP
    
     *  [php-code-builder][](MIT) - generates PHP mapping structures defined by JSON schema using [swaggest/json-schema][Swaggest Json Schema] *supports Draft 7*
 *  Python
    
     *  [yacg][] (MIT) - parse JSON Schema and OpenApi files to build a meta model from them. This meta model can be used in Mako templates to generate source code, other schemas or plantUml.
 *  Rust
    
     *  [schemafy][] - generates Rust types and serialization code from a JSON schema. *supports Draft 4*

**3.2）生成web UI：**

*   [Alpaca Forms][] (ASL 2.0)
 *  [Angular Schema Form][] (MIT)
 *  [Angular2 Schema Form][] *unrelated to Angular Schema Form* (MIT)
 *  [Angular6-json-schema-form][] (MIT)
 *  [Dashjoin JSON Schema Form][] (Apache 2) *draft-06 (minus oneOf, anyOf, allOf, not)*
 *  [JSON Editor][] (MIT)
 *  [JSON Form (joshfire)][JSON Form _joshfire] (joshfire) (MIT)
 *  [Json Forms (brutusin)][Json Forms _brutusin] (brutusin) (MIT)
 *  [JSONForms (jsonforms.io)][JSONForms _jsonforms.io] (EclipseSource) (MIT)
 *  [Liform-react][] (MIT)
 *  [React JSON Schema Form (mozilla)][React JSON Schema Form _mozilla] (Apache 2)
 *  [React Schema Form (networknt)][React Schema Form _networknt] (MIT)
 *  [uniforms (Vazco)][uniforms _Vazco] (MIT)

[http_json-schema.org]: http://json-schema.org/
[https_github.com_json-schema-org_json-schema-spec]: https://github.com/json-schema-org/json-schema-spec
[https_groups.google.com_g_json-schema_pli_1]: https://groups.google.com/g/json-schema?pli=1
[URI Templates]: https://tools.ietf.org/html/rfc6570
[2019-09 _formerly known as Draft 8]: http://json-schema.org/specification-links.html#2019-09-formerly-known-as-draft-8
[Draft 7]: http://json-schema.org/specification-links.html#draft-7
[Obsolete Draft 7 Documents]: http://json-schema.org/specification-links.html#obsolete-draft-7-documents
[Draft 6]: http://json-schema.org/specification-links.html#draft-6
[Draft 5]: http://json-schema.org/specification-links.html#draft-5
[Draft 4]: http://json-schema.org/specification-links.html#draft-4
[Draft 3]: http://json-schema.org/specification-links.html#draft-3
[Draft 2]: http://json-schema.org/specification-links.html#draft-2
[Draft 1]: http://json-schema.org/specification-links.html#draft-1
[Draft 0]: http://json-schema.org/specification-links.html#draft-0
[http_json-schema.org_specification-links.html]: http://json-schema.org/specification-links.html
[JSON Schema _core]: https://datatracker.ietf.org/doc/draft-handrews-json-schema/
[JSON Schema Validation]: https://datatracker.ietf.org/doc/draft-handrews-json-schema-validation/
[JSON Hyper-Schema]: https://datatracker.ietf.org/doc/draft-handrews-json-schema-hyperschema/
[Relative JSON Pointers]: https://datatracker.ietf.org/doc/draft-handrews-relative-json-pointer/
[https_blog.csdn.net_liuxiao723846_article_details_108553456]: https://blog.csdn.net/liuxiao723846/article/details/108553456
[http_json-schema.org_implementations.html]: http://json-schema.org/implementations.html
[20200914101309732.png]: /images/20210511/5c6837a3935f45a689cfee1c144caa2b.png
[Json.NET Schema]: https://www.newtonsoft.com/jsonschema
[Manatee.Json]: https://github.com/gregsdennis/Manatee.Json
[WJElement]: https://github.com/netmail-open/wjelement
[17]: https://github.com/netmail-open/wjelement/issues/17#issuecomment-390899432
[f5-json-schema]: https://github.com/KayEss/json-schema
[JSON schema validator for JSON for Modern C]: https://github.com/pboettch/json-schema-validator
[Valijson]: https://github.com/tristanpenman/valijson
[jinx]: https://github.com/juxt/jinx
[json-schema]: https://github.com/luposlip/json-schema
[json-schema 1]: https://github.com/fisxoj/json-schema
[Elixir JSON Schema validator]: https://github.com/jonasschmidt/ex_json_schema
[24]: https://github.com/jonasschmidt/ex_json_schema/issues/24
[multi-draft-support]: https://github.com/jonasschmidt/ex_json_schema/tree/multi-draft-support
[JsonXema]: https://github.com/hrzndhrn/json_xema
[gojsonschema]: https://github.com/xeipuuv/gojsonschema
[santhosh-tekuri_jsonschema]: https://github.com/santhosh-tekuri/jsonschema
[qri-io_jsonschema]: https://github.com/qri-io/jsonschema
[Snow]: https://github.com/ssilverman/snowy-json
[everit-org_json-schema]: https://github.com/everit-org/json-schema
[Justify]: https://github.com/leadpony/justify
[networknt_json-schema-validator]: https://github.com/networknt/json-schema-validator
[Medeia-validator]: https://github.com/worldturner/medeia-validator
[ajv]: https://github.com/epoberezkin/ajv
[custom keywords]: https://github.com/epoberezkin/ajv-keywords
[data reference]: https://github.com/json-schema-org/json-schema-spec/issues/51
[djv]: https://github.com/korzio/djv
[Hyperjump JSV]: https://github.com/jdesrosiers/json-schema
[vue-vuelidate-jsonschema]: https://github.com/mokkabonna/vue-vuelidate-jsonschema
[cfworker_json-schema]: https://github.com/cfworker/cfworker/blob/master/packages/json-schema/README.md
[JSON_Validator]: https://github.com/mojolicious/json-validator
[JSON_Schema_Draft201909]: https://github.com/karenetheridge/JSON-Schema-Draft201909
[Opis Json Schema]: https://github.com/opis/json-schema
[Swaggest Json Schema]: https://github.com/swaggest/php-json-schema
[jsonschema]: https://github.com/Julian/jsonschema
[fastjsonschema]: https://github.com/horejsek/python-fastjsonschema
[jsonschema-rs]: https://github.com/Stranger6667/jsonschema-rs/python
[JSONSchemer]: https://github.com/davishmcclurg/json_schemer
[jsonschema-rs 1]: https://github.com/Stranger6667/jsonschema-rs
[DSJSONSchemaValidation]: https://github.com/dashevo/JSONSchemaValidation
[lua-resty-jsonschema]: https://github.com/iresty/lua-resty-jsonschema
[Hyperjump JSV 1]: https://json-schema.hyperjump.io/
[JSON Schema Validator]: https://www.jsonschemavalidator.net/
[JSON Schema Lint]: http://jsonschemalint.com/
[ExtendsClass_s JSON Schema Validator]: https://extendsclass.com/json-schema-validator.html
[ajv-cli]: https://www.npmjs.com/package/ajv-cli
[Polyglottal JSON Schema Validator]: https://www.npmjs.com/package/pajv
[yajsv]: https://github.com/neilpa/yajsv
[saasquatch_json-schema-inferrer]: https://github.com/saasquatch/json-schema-inferrer
[Schema Guru]: https://github.com/snowplow/schema-guru
[178]: https://github.com/snowplow/schema-guru/issues/178
[jsonschema.net]: https://www.jsonschema.net/
[quicktype.io]: https://app.quicktype.io/#l=schema
[NJsonSchema]: https://github.com/RSuter/NJsonSchema/
[574]: https://github.com/RSuter/NJsonSchema/issues/574
[Liform]: https://github.com/Limenius/liform
[typescript-json-schema]: https://github.com/YousefED/typescript-json-schema
[Pydantic]: https://pydantic-docs.helpmanual.io/
[jsonschema-generator]: https://github.com/victools/jsonschema-generator
[scala-jsonschema]: https://github.com/andyglow/scala-jsonschema
[DJsonSchema]: https://github.com/schlothauer-wauer/DJsonSchema
[json-schema-to-elm]: https://github.com/dragonwasrobot/json-schema-to-elm
[dragonwasrobot_json_schema]: https://github.com/dragonwasrobot/json_schema
[jsonCodeGen]: https://github.com/schlothauer-wauer/jsoncodegen
[php-code-builder]: https://github.com/swaggest/php-code-builder
[yacg]: https://github.com/OkieOth/yacg
[schemafy]: https://github.com/Marwes/schemafy/
[Alpaca Forms]: http://www.alpacajs.org/
[Angular Schema Form]: https://github.com/json-schema-form/angular-schema-form
[Angular2 Schema Form]: https://github.com/makinacorpus/angular2-schema-form
[Angular6-json-schema-form]: https://github.com/hamzahamidi/Angular6-json-schema-form
[Dashjoin JSON Schema Form]: https://github.com/dashjoin/json-schema-form
[JSON Editor]: https://github.com/json-editor/json-editor
[JSON Form _joshfire]: https://github.com/joshfire/jsonform
[Json Forms _brutusin]: https://github.com/brutusin/json-forms
[JSONForms _jsonforms.io]: https://jsonforms.io/
[Liform-react]: https://github.com/Limenius/liform-react
[React JSON Schema Form _mozilla]: https://github.com/mozilla-services/react-jsonschema-form
[React Schema Form _networknt]: https://github.com/networknt/react-schema-form
[uniforms _Vazco]: https://github.com/vazco/uniforms