How to generate documentation using swashbuckle for WebApi 2 with Owin
I have created a WebApi Project using this article.
Things are working fine. But now my client want to view the documentation using Swagger. I tried to do configuration but things are not working. not getting the list of controllers and their action.
below is the swagger config:
using System.Web.Http;
using WebActivatorEx;
using DC.SUMS.WebAPI1;
using Swashbuckle.Application;
using System;
using System.Linq;
using Swashbuckle.Swagger;
using Swashbuckle.Dummy.SwaggerExtensions;
[assembly: PreApplicationStartMethod(typeof(SwaggerConfig), "Register")]
namespace DC.SUMS.WebAPI1
{
public class SwaggerConfig
{
public static void Register()
{
var thisAssembly = typeof(SwaggerConfig).Assembly;
GlobalConfiguration.Configuration
.EnableSwagger(c =>
{
// By default, the service root url is inferred from the request used to access the docs.
// However, there may be situations (e.g. proxy and load-balanced environments) where this does not
// resolve correctly. You can workaround this by providing your own code to determine the root URL.
//
//c.RootUrl(req => GetRootUrlFromAppConfig());
// If schemes are not explicitly provided in a Swagger 2.0 document, then the scheme used to access
// the docs is taken as the default. If your API supports multiple schemes and you want to be explicit
// about them, you can use the "Schemes" option as shown below.
//
//c.Schemes(new[] { "http", "https" });
// Use "SingleApiVersion" to describe a single version API. Swagger 2.0 includes an "Info" object to
// hold additional metadata for an API. Version and title are required but you can also provide
// additional fields by chaining methods off SingleApiVersion.
//
c.SingleApiVersion("v1", "DC.SUMS.WebAPI1");
// If your API has multiple versions, use "MultipleApiVersions" instead of "SingleApiVersion".
// In this case, you must provide a lambda that tells Swashbuckle which actions should be
// included in the docs for a given API version. Like "SingleApiVersion", each call to "Version"
// returns an "Info" builder so you can provide additional metadata per API version.
//
//c.MultipleApiVersions(
// (apiDesc, targetApiVersion) => ResolveVersionSupportByRouteConstraint(apiDesc, targetApiVersion),
// (vc) =>
// {
// vc.Version("v2", "Swashbuckle Dummy API V2");
// vc.Version("v1", "Swashbuckle Dummy API V1");
// });
// You can use "BasicAuth", "ApiKey" or "OAuth2" options to describe security schemes for the API.
// See https://github.com/swagger-api/swagger-spec/blob/master/versions/2.0.md for more details.
// NOTE: These only define the schemes and need to be coupled with a corresponding "security" property
// at the document or operation level to indicate which schemes are required for an operation. To do this,
// you'll need to implement a custom IDocumentFilter and/or IOperationFilter to set these properties
// according to your specific authorization implementation
//
//c.BasicAuth("basic")
// .Description("Basic HTTP Authentication");
//
//c.ApiKey("apiKey")
// .Description("API Key Authentication")
// .Name("apiKey")
// .In("header");
//
c.OAuth2("oauth2")
.Description("OAuth2 Implicit Grant")
.Flow("implicit")
.AuthorizationUrl("https://localhost:8891/authorize")
.TokenUrl("https://localhost:8891/token")
.Scopes(scopes =>
{
scopes.Add("read", "Read access to protected resources");
scopes.Add("write", "Write access to protected resources");
});
// Set this flag to omit descriptions for any actions decorated with the Obsolete attribute
//c.IgnoreObsoleteActions();
// Each operation be assigned one or more tags which are then used by consumers for various reasons.
// For example, the swagger-ui groups operations according to the first tag of each operation.
// By default, this will be controller name but you can use the "GroupActionsBy" option to
// override with any value.
//
//c.GroupActionsBy(apiDesc => apiDesc.HttpMethod.ToString());
// You can also specify a custom sort order for groups (as defined by "GroupActionsBy") to dictate
// the order in which operations are listed. For example, if the default grouping is in place
// (controller name) and you specify a descending alphabetic sort order, then actions from a
// ProductsController will be listed before those from a CustomersController. This is typically
// used to customize the order of groupings in the swagger-ui.
//
//c.OrderActionGroupsBy(new DescendingAlphabeticComparer());
// If you annotate Controllers and API Types with
// Xml comments (http://msdn.microsoft.com/en-us/library/b2s063f7(v=vs.110).aspx), you can incorporate
// those comments into the generated docs and UI. You can enable this by providing the path to one or
// more Xml comment files.
//
c.IncludeXmlComments(GetXmlCommentsPath());
// Swashbuckle makes a best attempt at generating Swagger compliant JSON schemas for the various types
// exposed in your API. However, there may be occasions when more control of the output is needed.
// This is supported through the "MapType" and "SchemaFilter" options:
//
// Use the "MapType" option to override the Schema generation for a specific type.
// It should be noted that the resulting Schema will be placed "inline" for any applicable Operations.
// While Swagger 2.0 supports inline definitions for "all" Schema types, the swagger-ui tool does not.
// It expects "complex" Schemas to be defined separately and referenced. For this reason, you should only
// use the "MapType" option when the resulting Schema is a primitive or array type. If you need to alter a
// complex Schema, use a Schema filter.
//
//c.MapType<ProductType>(() => new Schema { type = "integer", format = "int32" });
// If you want to post-modify "complex" Schemas once they've been generated, across the board or for a
// specific type, you can wire up one or more Schema filters.
//
c.SchemaFilter<ApplySchemaVendorExtensions>();
// In a Swagger 2.0 document, complex types are typically declared globally and referenced by unique
// Schema Id. By default, Swashbuckle does NOT use the full type name in Schema Ids. In most cases, this
// works well because it prevents the "implementation detail" of type namespaces from leaking into your
// Swagger docs and UI. However, if you have multiple types in your API with the same class name, you'll
// need to opt out of this behavior to avoid Schema Id conflicts.
//
//c.UseFullTypeNameInSchemaIds();
// Alternatively, you can provide your own custom strategy for inferring SchemaId's for
// describing "complex" types in your API.
//
c.SchemaId(t => t.FullName.Contains('`') ? t.FullName.Substring(0, t.FullName.IndexOf('`')) : t.FullName);
// Set this flag to omit schema property descriptions for any type properties decorated with the
// Obsolete attribute
c.IgnoreObsoleteProperties();
// In accordance with the built in JsonSerializer, Swashbuckle will, by default, describe enums as integers.
// You can change the serializer behavior by configuring the StringToEnumConverter globally or for a given
// enum type. Swashbuckle will honor this change out-of-the-box. However, if you use a different
// approach to serialize enums as strings, you can also force Swashbuckle to describe them as strings.
//
c.DescribeAllEnumsAsStrings();
// Similar to Schema filters, Swashbuckle also supports Operation and Document filters:
//
// Post-modify Operation descriptions once they've been generated by wiring up one or more
// Operation filters.
//
c.OperationFilter<AddDefaultResponse>();
//
// If you've defined an OAuth2 flow as described above, you could use a custom filter
// to inspect some attribute on each action and infer which (if any) OAuth2 scopes are required
// to execute the operation
//
c.OperationFilter<AssignOAuth2SecurityRequirements>();
c.OperationFilter<AddFileUploadParams>();
c.OperationFilter<SupportFlaggedEnums>();
c.OperationFilter<UpdateFileDownloadOperations>();
// Post-modify the entire Swagger document by wiring up one or more Document filters.
// This gives full control to modify the final SwaggerDocument. You should have a good understanding of
// the Swagger 2.0 spec. - https://github.com/swagger-api/swagger-spec/blob/master/versions/2.0.md
// before using this option.
//
c.DocumentFilter<ApplyDocumentVendorExtensions>();
// In contrast to WebApi, Swagger 2.0 does not include the query string component when mapping a URL
// to an action. As a result, Swashbuckle will raise an exception if it encounters multiple actions
// with the same path (sans query string) and HTTP method. You can workaround this by providing a
// custom strategy to pick a winner or merge the descriptions for the purposes of the Swagger docs
//
c.ResolveConflictingActions(apiDescriptions => apiDescriptions.First());
// Wrap the default SwaggerGenerator with additional behavior (e.g. caching) or provide an
// alternative implementation for ISwaggerProvider with the CustomProvider option.
//
//c.CustomProvider((defaultProvider) => new CachingSwaggerProvider(defaultProvider));
})
.EnableSwaggerUi(c =>
{
// Use the "InjectStylesheet" option to enrich the UI with one or more additional CSS stylesheets.
// The file must be included in your project as an "Embedded Resource", and then the resource's
// "Logical Name" is passed to the method as shown below.
//
//c.InjectStylesheet(containingAssembly, "Swashbuckle.Dummy.SwaggerExtensions.testStyles1.css");
// Use the "InjectJavaScript" option to invoke one or more custom JavaScripts after the swagger-ui
// has loaded. The file must be included in your project as an "Embedded Resource", and then the resource's
// "Logical Name" is passed to the method as shown above.
//
//c.InjectJavaScript(thisAssembly, "Swashbuckle.Dummy.SwaggerExtensions.testScript1.js");
// The swagger-ui renders boolean data types as a dropdown. By default, it provides "true" and "false"
// strings as the possible choices. You can use this option to change these to something else,
// for example 0 and 1.
//
c.BooleanValues(new[] { "0", "1" });
// By default, swagger-ui will validate specs against swagger.io's online validator and display the result
// in a badge at the bottom of the page. Use these options to set a different validator URL or to disable the
// feature entirely.
//c.SetValidatorUrl("http://localhost/validator");
//c.DisableValidator();
// Use this option to control how the Operation listing is displayed.
// It can be set to "None" (default), "List" (shows operations for each resource),
// or "Full" (fully expanded: shows operations and their details).
//
c.DocExpansion(DocExpansion.List);
// Use the CustomAsset option to provide your own version of assets used in the swagger-ui.
// It's typically used to instruct Swashbuckle to return your version instead of the default
// when a request is made for "index.html". As with all custom content, the file must be included
// in your project as an "Embedded Resource", and then the resource's "Logical Name" is passed to
// the method as shown below.
//
//c.CustomAsset("index", containingAssembly, "YourWebApiProject.SwaggerExtensions.index.html");
// If your API has multiple versions and you've applied the MultipleApiVersions setting
// as described above, you can also enable a select box in the swagger-ui, that displays
// a discovery URL for each version. This provides a convenient way for users to browse documentation
// for different API versions.
//
//c.EnableDiscoveryUrlSelector();
// If your API supports the OAuth2 Implicit flow, and you've described it correctly, according to
// the Swagger 2.0 specification, you can enable UI support as shown below.
//
c.EnableOAuth2Support("test-client-id", "test-realm", "Swagger UI");
});
}
private static string GetXmlCommentsPath()
{
return String.Format(@"{0}\bin\doc.xml", AppDomain.CurrentDomain.BaseDirectory);
}
}
public class ApplySchemaVendorExtensions : ISchemaFilter
{
public void Apply(Schema schema, SchemaRegistry schemaRegistry, Type type)
{
schema.vendorExtensions.Add("x-schema", "bar");
}
}
}
Answer
If I'm reading this correctly, you are calling the Register method before you are calling Configuration in Startup? If this is the case, I think you are needlessly complicating things. This is what I typically do:
public class Startup
{
public void Configuration(IAppBuilder app)
{
var config = new HttpConfiguration();
config.MapHttpAttributeRoutes();
// Any additional configuration: filters, services, etc.
config.EnableSwagger(x => x.SingleApiVersion("v1", "Application Name")).EnableSwaggerUi();
app.UseWebApi(config)
}
}
If you are enabling Swagger on the global configuration, and starting Web Api on a new HttpConfiguration instance, then that is most likely your problem.
Hope that helps.