Introduction

From it's web site: "....with a Swagger-enabled API, you get interactive documentation, client SDK generation and discoverability."

ASP.NET Core

Install NuGet Package

Install the Swashbuckle.AspNetCore NuGet package to your Web project.

Configure

Add the following configuration code for Swagger into the ConfigureServices method of your Startup.cs

public IServiceProvider ConfigureServices(IServiceCollection services)
{
    //your other code...
    
      services.AddSwaggerGen(options =>
            {
                options.SwaggerDoc("v1", new OpenApiInfo { Title = "AbpZeroTemplate API", Version = "v1" });
                options.DocInclusionPredicate((docName, description) => true);
            });
    
    //your other code...
}

Then, to use swagger, add this code into the Configure method of Startup.cs

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
    //your other code...

     app.UseSwagger();
            //Enable middleware to serve swagger - ui assets(HTML, JS, CSS etc.)
            app.UseSwaggerUI(options =>
            {
                options.SwaggerEndpoint("/swagger/v1/swagger.json", "AbpZeroTemplate API V1");
            }); //URL: /swagger 
            
    //your other code...
}

Test

That's it! You can now browse the swagger ui under "/swagger".

ASP.NET 5.x

Install NuGet Package

Install the Swashbuckle.Core NuGet package to your WebApi project (or Web project).

Configure

Add the configuration code for Swagger into the Initialize method of your module. Example:

public class SwaggerIntegrationDemoWebApiModule : AbpModule
{
    public override void Initialize()
    {
        //your other code...

        ConfigureSwaggerUi();
    }

    private void ConfigureSwaggerUi()
    {
        Configuration.Modules.AbpWebApi().HttpConfiguration
            .EnableSwagger(c =>
            {
                c.SingleApiVersion("v1", "SwaggerIntegrationDemo.WebApi");
                c.ResolveConflictingActions(apiDescriptions => apiDescriptions.First());
            })
            .EnableSwaggerUi(c =>
            {
                c.InjectJavaScript(Assembly.GetAssembly(typeof(AbpProjectNameWebApiModule)), "AbpCompanyName.AbpProjectName.Api.Scripts.Swagger-Custom.js");
            });
    }
}

Note that we inject a JavaScript file named "Swagger-Custom.js" while configuring the swagger ui. This script file is used to add a CSRF token to requests while testing api services in the ui. You may also need to add this file to your WebApi project as an embedded resource and use it's Logical Name in the InjectJavaScript method while injecting it.

IMPORTANT: The code above will be slightly different for your project (Namespace will not be AbpCompanyName.AbpProjectName... and AbpProjectNameWebApiModule will be YourProjectNameWebApiModule).

Here's the content of the Swagger-Custom.js:

var getCookieValue = function(key) {
    var equalities = document.cookie.split('; ');
    for (var i = 0; i < equalities.length; i++) {
        if (!equalities[i]) {
            continue;
        }

        var splitted = equalities[i].split('=');
        if (splitted.length !== 2) {
            continue;
        }

        if (decodeURIComponent(splitted[0]) === key) {
            return decodeURIComponent(splitted[1] || '');
        }
    }

    return null;
};

var csrfCookie = getCookieValue("XSRF-TOKEN");
var csrfCookieAuth = new SwaggerClient.ApiKeyAuthorization("X-XSRF-TOKEN", csrfCookie, "header");
swaggerUi.api.clientAuthorizations.add("X-XSRF-TOKEN", csrfCookieAuth);

See the Swashbuckle documentation for more configuration options.

Test

That's it! Let's browse to /swagger/ui/index:

You can see all the Web API Controllers (and also the dynamic web api controllers) and test them.