Swagger is not showing 'Authorize' icon

Question

I have an API Project which uses Swagger.

I am using .NET Core Web API (version 6)

Without Authorization, I can not test my end points. I can use POSTMAN but would prefer using Swagger.

Answer 1

Add Swashbuckle.AspNetCore package to API project. Add the below configuration for to Program class

builder.Services.AddSwaggerGen(option =>
{
    option.SwaggerDoc("v1", new OpenApiInfo { Title = "Demo API", Version = "v1" });
    option.AddSecurityDefinition(
        "Bearer",
        new OpenApiSecurityScheme
        {
            In = ParameterLocation.Header,
            Description = "Please enter a valid token",
            Name = "Authorization",
            Type = SecuritySchemeType.Http,
            BearerFormat = "JWT",
            Scheme = "Bearer"
        }
    );
    option.AddSecurityRequirement(
        new OpenApiSecurityRequirement
        {
            {
                new OpenApiSecurityScheme
                {
                    Reference = new OpenApiReference
                    {
                        Type = ReferenceType.SecurityScheme,
                        Id = "Bearer"
                    }
                },
                new string[] { }
            }
        }
    );
});

Now you can see the Authorize option on swagger home page and authorization works if you are using jwt tokens.

For more info refer this blog