Swagger Code Generator

⭐⭐⭐ If you would like to contribute, please refer to guidelines and a list of open tasks.:star::star::star:

📔 For more information, please refer to the Wiki page and FAQ 📔

⚠️ If the OpenAPI/Swagger spec is obtained from an untrusted source, please make sure you've reviewed the spec before using Swagger Codegen to generate the API client, server stub or documentation as code injection may occur ⚠️

Overview

This is the swagger codegen project, which allows generation of client libraries automatically from a Swagger-compliant server.

Check out Swagger-Spec for additional information about the Swagger project, including additional libraries with support for other languages and more.

NAME
        swagger-codegen-cli generate - Generate code with chosen lang

SYNOPSIS
        swagger-codegen-cli generate
                [(-a <authorization> | --auth <authorization>)]
                [--additional-properties <additional properties>]
                [--api-package <api package>] [--artifact-id <artifact id>]
                [--artifact-version <artifact version>]
                [(-c <configuration file> | --config <configuration file>)]
                [-D <system properties>] [--group-id <group id>]
                (-i <spec file> | --input-spec <spec file>)
                [--import-mappings <import mappings>]
                [--instantiation-types <instantiation types>]
                [--invoker-package <invoker package>]
                (-l <language> | --lang <language>)
                [--language-specific-primitives <language specific primitives>]
                [--library <library>] [--model-package <model package>]
                [(-o <output directory> | --output <output directory>)]
                [(-s | --skip-overwrite)]
                [(-t <template directory> | --template-dir <template directory>)]
                [--type-mappings <type mappings>] [(-v | --verbose)]

OPTIONS
        -a <authorization>, --auth <authorization>
            adds authorization headers when fetching the swagger definitions
            remotely. Pass in a URL-encoded string of name:header with a comma
            separating multiple values

        --additional-properties <additional properties>
            sets additional properties that can be referenced by the mustache
            templates in the format of name=value,name=value

        --api-package <api package>
            package for generated api classes

        --artifact-id <artifact id>
            artifactId in generated pom.xml

        --artifact-version <artifact version>
            artifact version in generated pom.xml

        -c <configuration file>, --config <configuration file>
            Path to json configuration file. File content should be in a json
            format {"optionKey":"optionValue", "optionKey1":"optionValue1"...}
            Supported options can be different for each language. Run
            config-help -l {lang} command for language specific config options.

        -D <system properties>
            sets specified system properties in the format of
            name=value,name=value

        --group-id <group id>
            groupId in generated pom.xml

        -i <spec file>, --input-spec <spec file>
            location of the swagger spec, as URL or file (required)


        --import-mappings <import mappings>
            specifies mappings between a given class and the import that should
            be used for that class in the format of type=import,type=import

        --instantiation-types <instantiation types>
            sets instantiation type mappings in the format of
            type=instantiatedType,type=instantiatedType.For example (in Java):
            array=ArrayList,map=HashMap. In other words array types will get
            instantiated as ArrayList in generated code.

        --invoker-package <invoker package>
            root package for generated code

        -l <language>, --lang <language>
            client language to generate (maybe class name in classpath,
            required)

        --language-specific-primitives <language specific primitives>
            specifies additional language specific primitive types in the format
            of type1,type2,type3,type3. For example:
            String,boolean,Boolean,Double

        --library <library>
            library template (sub-template)

        --model-package <model package>
            package for generated models

        -o <output directory>, --output <output directory>
            where to write the generated files (current dir by default)

        -s, --skip-overwrite
            specifies if the existing files should be overwritten during the
            generation.

        -t <template directory>, --template-dir <template directory>
            folder containing the template files

        --type-mappings <type mappings>
            sets mappings between swagger spec types and generated code types in
            the format of swaggerType=generatedType,swaggerType=generatedType.
            For example: array=List,map=Map,string=String

        -v, --verbose
            verbose mode

You can then compile and run the client, as well as unit tests against it:

cd samples/client/petstore/java
mvn package

Other languages have petstore samples, too:

./bin/android-petstore.sh
./bin/java-petstore.sh
./bin/objc-petstore.sh

Generating libraries from your server

It's just as easy--just use the -i flag to point to either a server or file.

Modifying the client library format

Don't like the default swagger client syntax? Want a different language supported? No problem! Swagger codegen processes mustache templates with the jmustache engine. You can modify our templates or make your own.

You can look at modules/swagger-codegen/src/main/resources/${your-language} for examples. To make your own templates, create your own files and use the -t flag to specify your template folder. It actually is that easy.

Making your own codegen modules

If you're starting a project with a new language and don't see what you need, swagger-codegen can help you create a project to generate your own libraries:

java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar meta \
  -o output/myLibrary -n myClientCodegen -p com.my.company.codegen

This will write, in the folder output/myLibrary, all the files you need to get started, including a README.md. Once modified and compiled, you can load your library with the codegen and generate clients with your own, custom-rolled logic.

You would then compile your library in the output/myLibrary folder with mvn package and execute the codegen like such:

java -cp output/myLibrary/target/myClientCodegen-swagger-codegen-1.0.0.jar:modules/swagger-codegen-cli/target/swagger-codegen-cli.jar io.swagger.codegen.SwaggerCodegen

Note the myClientCodegen is an option now, and you can use the usual arguments for generating your library:

java -cp output/myLibrary/target/myClientCodegen-swagger-codegen-1.0.0.jar:modules/swagger-codegen-cli/target/swagger-codegen-cli.jar \
  io.swagger.codegen.SwaggerCodegen generate -l myClientCodegen\
  -i http://petstore.swagger.io/v2/swagger.json \
  -o myClient

Where is Javascript???

See our javascript library--it's completely dynamic and doesn't require static code generation. There is a third-party component called swagger-js-codegen that can generate angularjs or nodejs source code from a OpenAPI Specification.

❗ On Dec 7th 2015, a Javascript API client generator has been added by @jfiala.

Generating a client from local files

If you don't want to call your server, you can save the OpenAPI Spec files into a directory and pass an argument to the code generator like this:

-i ./modules/swagger-codegen/src/test/resources/2_0/petstore.json

Great for creating libraries on your ci server, from the Swagger Editor... or while coding on an airplane.

Selective generation

You may not want to generate all models in your project. Likewise you may want just one or two apis to be written. If that's the case, you can use system properties to control the output:

The default is generate everything supported by the specific library. Once you enable a feature, it will restrict the contents generated:

# generate only models
java -Dmodels {opts}

# generate only apis
java -Dapis {opts}

# generate only supporting files
java -DsupportingFiles

# generate models and supporting files
java -Dmodels -DsupportingFiles

To control the specific files being generated, you can pass a CSV list of what you want:

# generate the User and Pet models only
-Dmodels=User,Pet

# generate the User model and the supportingFile `StringUtil.java`:
-Dmodels=User -DsupportingFiles=StringUtil.java

To control generation of docs and tests for api and models, pass false to the option. For api, these options are -DapiTest=false and -DapiDocs=false. For models, -DmodelTest=false and -DmodelDocs=false. These options default to true and don't limit the generation of the feature options listed above (like -Dapi):

# generate only models (with tests and documentation)
java -Dmodels {opts}

# generate only models (with tests but no documentation)
java -Dmodels -DmodelDocs=false {opts}

# generate only User and Pet models (no tests and no documentation)
java -Dmodels=User,Pet -DmodelTests=false {opts}

# generate only apis (without tests)
java -Dapis -DapiTests=false {opts}

# generate only apis (modelTests option is ignored)
java -Dapis -DmodelTests=false {opts}

When using selective generation, only the templates needed for the specific generation will be used.

Ignore file format

Swagger codegen supports a .swagger-codegen-ignore file, similar to .gitignore or .dockerignore you're probably already familiar with.

The ignore file allows for better control over overwriting existing files than the --skip-overwrite flag. With the ignore file, you can specify individual files or directories can be ignored. This can be useful, for example if you only want a subset of the generated code.

Examples:

# Swagger Codegen Ignore
# Lines beginning with a # are comments

# This should match build.sh located anywhere.
build.sh

# Matches build.sh in the root
/build.sh

# Exclude all recursively
docs/**

# Explicitly allow files excluded by other rules
!docs/UserApi.md

# Recursively exclude directories named Api
# You can't negate files below this directory.
src/**/Api/

# When this file is nested under /Api (excluded above),
# this rule is ignored because parent directory is excluded by previous rule.
!src/**/PetApiTests.cs

# Exclude a single, nested file explicitly
src/IO.Swagger.Test/Model/AnimalFarmTests.cs

The .swagger-codegen-ignore file must exist in the root of the output directory.

Customizing the generator

There are different aspects of customizing the code generator beyond just creating or modifying templates. Each language has a supporting configuration file to handle different type mappings, etc:

$ ls -1 modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/
AbstractJavaJAXRSServerCodegen.java
AbstractTypeScriptClientCodegen.java
AkkaScalaClientCodegen.java
AndroidClientCodegen.java
AspNet5ServerCodegen.java
AsyncScalaClientCodegen.java
CSharpClientCodegen.java
ClojureClientCodegen.java
CsharpDotNet2ClientCodegen.java
DartClientCodegen.java
FlashClientCodegen.java
FlaskConnexionCodegen.java
GoClientCodegen.java
HaskellServantCodegen.java
JMeterCodegen.java
JavaCXFServerCodegen.java
JavaClientCodegen.java
JavaInflectorServerCodegen.java
JavaJerseyServerCodegen.java
JavaResteasyServerCodegen.java
JavascriptClientCodegen.java
NodeJSServerCodegen.java
NancyFXServerCodegen
ObjcClientCodegen.java
PerlClientCodegen.java
PhpClientCodegen.java
PythonClientCodegen.java
Qt5CPPGenerator.java
RubyClientCodegen.java
ScalaClientCodegen.java
ScalatraServerCodegen.java
SilexServerCodegen.java
SinatraServerCodegen.java
SlimFrameworkServerCodegen.java
SpringMVCServerCodegen.java
StaticDocCodegen.java
StaticHtmlGenerator.java
SwaggerGenerator.java
SwaggerYamlGenerator.java
SwiftCodegen.java
TizenClientCodegen.java
TypeScriptAngularClientCodegen.java
TypeScriptNodeClientCodegen.java

Each of these files creates reasonable defaults so you can get running quickly. But if you want to configure package names, prefixes, model folders, etc. you can use a json config file to pass the values.

java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
  -i http://petstore.swagger.io/v2/swagger.json \
  -l java \
  -o samples/client/petstore/java \
  -c path/to/config.json

Supported config options can be different per language. Running config-help -l {lang} will show available options. These options are applied by passing them with `-D{optionName}={optionValue}.

java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar config-help -l java

Output

CONFIG OPTIONS
	modelPackage
	    package for generated models

	apiPackage
	    package for generated api classes

	sortParamsByRequiredFlag
	    Sort method arguments to place required parameters before optional parameters. Default: true

	invokerPackage
	    root package for generated code

	groupId
	    groupId in generated pom.xml

	artifactId
	    artifactId in generated pom.xml

	artifactVersion
	    artifact version in generated pom.xml

	sourceFolder
	    source folder for generated code

	localVariablePrefix
	    prefix for generated code members and local variables

	serializableModel
	    boolean - toggle "implements Serializable" for generated models

	library
	    library template (sub-template) to use:
	    <default> - HTTP client: Jersey client 1.18. JSON processing: Jackson 2.4.2
	    jersey2 - HTTP client: Jersey client 2.6
	    feign - HTTP client: Netflix Feign 8.1.1.  JSON processing: Jackson 2.6.3
	    okhttp-gson - HTTP client: OkHttp 2.4.0. JSON processing: Gson 2.3.1
	    retrofit - HTTP client: OkHttp 2.4.0. JSON processing: Gson 2.3.1 (Retrofit 1.9.0)
        retrofit2 - HTTP client: OkHttp 2.5.0. JSON processing: Gson 2.4 (Retrofit 2.0.0-beta2)

Your config file for Java can look like

{
  "groupId":"com.my.company",
  "artifactId":"MyClient",
  "artifactVersion":"1.2.0",
  "library":"feign"
}

For all the unspecified options default values will be used.

Another way to override default options is to extend the config class for the specific language. To change, for example, the prefix for the Objective-C generated files, simply subclass the ObjcClientCodegen.java:

package com.mycompany.swagger.codegen;

import io.swagger.codegen.languages.*;

public class MyObjcCodegen extends ObjcClientCodegen {
    static {
        PREFIX = "HELO";
    }
}

and specify the classname when running the generator:

-l com.mycompany.swagger.codegen.MyObjcCodegen

Your subclass will now be loaded and overrides the PREFIX value in the superclass.

Bringing your own models

Sometimes you don't want a model generated. In this case, you can simply specify an import mapping to tell the codegen what not to create. When doing this, every location that references a specific model will refer back to your classes. Note, this may not apply to all languages...

To specify an import mapping, use the --import-mappings argument and specify the model-to-import logic as such:

--import-mappings Pet=my.models.MyPet

Or for multiple mappings:

Pet=my.models.MyPet,Order=my.models.MyOrder

Validating your OpenAPI Spec

You have options. The easiest is to use our online validator which not only will let you validate your spec, but with the debug flag, you can see what's wrong with your spec. For example:

http://online.swagger.io/validator/debug?url=http://petstore.swagger.io/v2/swagger.json

Generating dynamic html api documentation

To do so, just use the -l dynamic-html flag when reading a spec file. This creates HTML documentation that is available as a single-page application with AJAX. To view the documentation:

cd samples/dynamic-html/
npm install
node .

Which launches a node.js server so the AJAX calls have a place to go.

Generating static html api documentation

To do so, just use the -l html flag when reading a spec file. This creates a single, simple HTML file with embedded css so you can ship it as an email attachment, or load it from your filesystem:

cd samples/html/
open index.html

To build a server stub

Please refer to https://github.com/swagger-api/swagger-codegen/wiki/Server-stub-generator-HOWTO for more information.

To build the codegen library

This will create the swagger-codegen library from source.

mvn package

Note! The templates are included in the library generated. If you want to modify the templates, you'll need to either repackage the library OR specify a path to your scripts

Workflow integration

You can use the swagger-codegen-maven-plugin for integrating with your workflow, and generating any codegen target.

GitHub Integration

To push the auto-generated SDK to GitHub, we provide git_push.sh to streamline the process. For example:

Create a new repository in GitHub (Ref: https://help.github.com/articles/creating-a-new-repository/)
Generate the SDK

 java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
 -i modules/swagger-codegen/src/test/resources/2_0/petstore.json -l perl \
 --git-user-id "wing328" \
 --git-repo-id "petstore-perl" \
 --release-note "Github integration demo" \
 -o /var/tmp/perl/petstore

Push the SDK to GitHub

cd /var/tmp/perl/petstore
/bin/sh ./git_push.sh

Online generators

One can also generate API client or server using the online generators (https://generator.swagger.io)

For example, to generate Ruby API client, simply send the following HTTP request using curl:

curl -X POST -H "content-type:application/json" -d '{"swaggerUrl":"http://petstore.swagger.io/v2/swagger.json"}' https://generator.swagger.io/api/gen/clients/ruby

Then you will receieve a JSON response with the URL to download the zipped code.

To customize the SDK, you can POST to https://generator.swagger.io/gen/clients/{language} with the following HTTP body:

{
  "options": {},
  "swaggerUrl": "http://petstore.swagger.io/v2/swagger.json"
}

in which the options for a language can be obtained by submitting a GET request to https://generator.swagger.io/api/gen/clients/{language}:

For example, curl https://generator.swagger.io/api/gen/clients/python returns

{
  "packageName":{
    "opt":"packageName",
    "description":"python package name (convention: snake_case).",
    "type":"string",
    "default":"swagger_client"
  },
  "packageVersion":{
    "opt":"packageVersion",
    "description":"python package version.",
    "type":"string",
    "default":"1.0.0"
  },
  "sortParamsByRequiredFlag":{
    "opt":"sortParamsByRequiredFlag",
    "description":"Sort method arguments to place required parameters before optional parameters.",
    "type":"boolean",
    "default":"true"
  }
}

To set package name to pet_store, the HTTP body of the request is as follows:

{
  "options": {
    "packageName": "pet_store"
  },
  "swaggerUrl": "http://petstore.swagger.io/v2/swagger.json"
}

and here is the curl command:

curl -H "Content-type: application/json" -X POST -d '{"options": {"packageName": "pet_store"},"swaggerUrl": "http://petstore.swagger.io/v2/swagger.json"}' https://generator.swagger.io/api/gen/clients/python

Guidelines for Contribution

Please refer to this page

Companies/Projects using Swagger Codegen

Here are some companies/projects using Swagger Codegen in production. To add your company/project to the list, please visit README.md and click on the icon to edit the page.

Activehours
Acunetix
Atlassian
Avenida Compras S.A.
beemo
bitly
Cachet Financial
CloudBoost
Conplement
Cupix
DBBest Technologies
DocuSign
Ergon
eureka
everystory.us
Expected Behavior
Finder
FH Münster - University of Applied Sciences
GraphHopper
Gravitate Solutions
IMS Health
Interactive Intelligence
LANDR Audio
Lascaux
LiveAgent
Kabuku
Kuroi
Kuary
Mporium
nViso
Okiok
OSDN
PagerDuty
Pepipost
Pixoneye
PostAffiliatePro
Rapid7
Reload! A/S
REstore
Revault Sàrl
Royal Bank of Canada (RBC)
SCOOP Software GmbH
SmartRecruiters
StyleRecipe
Svenska Spel AB
ThoughtWorks
uShip
W.UP
Wealthfront
WEXO A/S
Zalando
ZEEF.com

Swagger Codegen Core Team

Swaagger Codegen core team members are contributors who have been making signficiant contributions (review issues, fix bugs, make enhancements, etc) to the project on a regular basis.

API Clients

Languages	Core Team (join date)
ActionScript
C++
C#	@jimschubert (2016/05/01)
Clojure	@xhh (2016/05/01)
Dart
Groovy
Go	@guohuang (2016/05/01) @neilotoole (2016/05/01)
Java	@cbornet (2016/05/01) @xhh (2016/05/01) @epaul (2016/06/04)
NodeJS/Javascript	@xhh (2016/05/01)
ObjC	@mateuszmackowiak (2016/05/09)
Perl	@wing328 (2016/05/01)
PHP	@arnested (2016/05/01)
Python	@scottrw93 (2016/05/01)
Ruby	@wing328 (2016/05/01) @zlx (2016/05/22)
Scala
Swift	@jaz-ah (2016/05/01) @Edubits (2016/05/01)
TypeScript (Node)	@Vrolijkx (2016/05/01)
TypeScript (Angular1)	@Vrolijkx (2016/05/01)
TypeScript (Angular2)	@Vrolijkx (2016/05/01)
TypeScript (Fetch)

Server Stubs

Languages	Core Team (date joined)
C# ASP.NET5	@jimschubert (2016/05/01)
Go Server	@guohuang (2016/06/13)
Haskell Servant
Java Spring Boot
Java SpringMVC	@kolyjjj (2016/05/01)
Java JAX-RS
NancyFX
NodeJS	@kolyjjj (2016/05/01)
PHP Lumen	@abcsum (2016/05/01)
PHP Silex
PHP Slim
Python Flask
Ruby Sinatra	@wing328 (2016/05/01)
Scala Scalatra

Template Creator

Here is a list of template creators:

API Clients:
- Akka-Scala: @cchafer
- C++ REST: @Danielku15
- C# (.NET 2.0): @who
- Clojure: @xhh
- Dart: @yissachar
- Groovy: @victorgit
- Go: @wing328
- Java (Retrofit): @0legg
- Java (Retrofi2): @emilianobonassi
- Java (Jersey2): @xhh
- Java (okhttp-gson): @xhh
- Javascript/NodeJS: @jfiala
- Javascript (Closure-annotated Angular) @achew22
- Perl: @wing328
- Swift: @tkqubo
- TypeScript (Node): @mhardorf
- TypeScript (Angular1): @mhardorf
- TypeScript (Fetch): @leonyu
- TypeScript (Angular2): @roni-frantchi
Server Stubs
- C# ASP.NET5: @jimschubert
- C# NancyFX: @mstefaniuk
- Go Server: @guohuang
- Haskell Servant: @algas
- Java Spring Boot: @diyfr
- JAX-RS RestEasy: @chameleon82
- JAX-RS CXF: @hiveship
- PHP Lumen: @abcsum
- PHP Slim: @jfastnacht
- Ruby on Rails 5: @zlx

How to join the core team

Here are the requirements to become a core team member:

rank within top 50 in https://github.com/swagger-api/swagger-codegen/graphs/contributors
- to contribute, here are some good starting points
regular contributions to the project
- about 3 hours per week
- for contribution, it can be addressing issues, reviewing PRs submitted by others, submitting PR to fix bugs or make enhancements, etc

To join the core team, please reach out to wing328hk@gmail.com (@wing328) for more information.

To become a Template Creator, simply submit a PR for new API client (e.g. Rust, Elixir) or server stub (e.g. Ruby Grape) generator.

License

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 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.

Swagger Codegen Version	Release Date	OpenAPI Spec compatibility	Notes
2.2.0-SNAPSHOT		1.0, 1.1, 1.2, 2.0	master
2.1.6 (current stable)	2016-04-06	1.0, 1.1, 1.2, 2.0	tag v2.1.6
2.0.17	2014-08-22	1.1, 1.2	tag v2.0.17
1.0.4	2012-04-12	1.0, 1.1	tag v1.0.4

Name		Name	Last commit message	Last commit date
Latest commit History 6,758 Commits
.github		.github
bin		bin
modules		modules
samples		samples
.dockerignore		.dockerignore
.gitignore		.gitignore
.travis.yml		.travis.yml
CONTRIBUTING.md		CONTRIBUTING.md
Dockerfile		Dockerfile
LICENSE		LICENSE
README.md		README.md
Vagrantfile		Vagrantfile
pom.xml		pom.xml
run-in-docker.sh		run-in-docker.sh

License

PaddingtonBrown/swagger-codegen

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Swagger Code Generator

Overview

Table of contents

Compatibility

Prerequisites

OS X Users

Building

Docker

Build and run using docker

Run Docker in Vagrant

Public Docker image

Homebrew

Getting Started

Generators

To generate a sample client library

Generating libraries from your server

Modifying the client library format

Making your own codegen modules

Where is Javascript???

Generating a client from local files

Selective generation

Ignore file format

Customizing the generator

Bringing your own models

Validating your OpenAPI Spec

Generating dynamic html api documentation

Generating static html api documentation

To build a server stub

To build the codegen library

Workflow integration

GitHub Integration

Online generators

Guidelines for Contribution

Companies/Projects using Swagger Codegen

Swagger Codegen Core Team

API Clients

Server Stubs

Template Creator

How to join the core team

License

About

Resources

License

Stars

Watchers

Forks

Releases

Packages 0

Languages

Packages