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RicoSuter / NSwag

The Swagger/OpenAPI toolchain for .NET, ASP.NET Core and TypeScript.
http://NSwag.org
MIT License
6.81k stars 1.3k forks source link
angular aspnet aspnetcore aurelia codegen csharp dotnet nswag openapi swagger typescript webapi

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NSwag: The Swagger/OpenAPI toolchain for .NET, ASP.NET Core and TypeScript

NSwag | NJsonSchema | Apimundo | Namotion.Reflection

NuGet Version npm NuGet Version Preview build Discord StackOverflow Wiki Backers on Open Collective Sponsors on Open Collective

:point_right: Announcing Apimundo: An API documentation system based on NSwag and NJsonSchema :point_left:

NSwag is a Swagger/OpenAPI 2.0 and 3.0 toolchain for .NET, .NET Core, Web API, ASP.NET Core, TypeScript (jQuery, AngularJS, Angular 2+, Aurelia, KnockoutJS and more) and other platforms, written in C#. The OpenAPI/Swagger specification uses JSON and JSON Schema to describe a RESTful web API. The NSwag project provides tools to generate OpenAPI specifications from existing ASP.NET Web API controllers and client code from these OpenAPI specifications.

The project combines the functionality of Swashbuckle (OpenAPI/Swagger generation) and AutoRest (client generation) in one toolchain (these two libs are not needed). This way a lot of incompatibilites can be avoided and features which are not well described by the OpenAPI specification or JSON Schema are better supported (e.g. inheritance, enum and reference handling). The NSwag project heavily uses NJsonSchema for .NET for JSON Schema handling and C#/TypeScript class/interface generation.

ToolchainDiagram

The project is developed and maintained by Rico Suter and other contributors.

Features

Ways to use the toolchain

Tutorials

OpenAPI/Swagger Generators

Code Generators

Downloads

NPM Packages

NuGet Packages

Specification

OpenAPI generation

Code generation

ASP.NET and ASP.NET Core

Frontends

CI NuGet Feed

https://www.myget.org/F/nswag/api/v3/index.json

The NuGet packages may require the Microsoft.NETCore.Portable.Compatibility package on .NET Core/UWP targets (if mscorlib is missing).

LayerDiagram

Usage in C#

To register the middlewares to generate an OpenAPI spec and render the UI, register NSwag in Startup.cs: 

public class Startup
{
    ...

    public void ConfigureServices(IServiceCollection services)
    {
        services.AddOpenApiDocument(); // add OpenAPI v3 document
//      services.AddSwaggerDocument(); // add Swagger v2 document
    }

    public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
    {
        ...

        app.UseOpenApi(); // serve OpenAPI/Swagger documents
        app.UseSwaggerUi(); // serve Swagger UI
        app.UseReDoc(); // serve ReDoc UI
    }
}

The following code shows how to read an OpenAPI/Swagger specification and generate C# client classes to call the described web services: 

var document = await OpenApiDocument.FromFileAsync("openapi.json");
var clientSettings = new CSharpClientGeneratorSettings 
{
    ClassName = "MyClass",
    CSharpGeneratorSettings = 
    {
        Namespace = "MyNamespace"
    }
};

var clientGenerator = new CSharpClientGenerator(document, clientSettings);
var code = clientGenerator.GenerateFile();

Check out the project Wiki for more information.

NSwagStudio

The generators can be used in a comfortable and simple Windows GUI called NSwagStudio:

Sponsors, support and consulting

Companies or individuals which paid a substantial amount for implementing, fixing issues, support or sponsoring are listed below. Thank you for supporting this project! You can also become a financial contributor:

Please contact Rico Suter for paid consulting and support.

Contributors

This project exists thanks to all the people who contribute. [Contribute].

Sponsors

Support this project by becoming a sponsor. Your logo will show up here with a link to your website.

Top sponsors:

Sponsors:

Backers

Thank you to all our backers!