MintPlayer.AspNetCore.SitemapXml 1.1.4

MintPlayer.AspNetCore.SitemapXml

Helper library to host a sitemap from your ASP.NET Core application

NuGet package

https://www.nuget.org/packages/MintPlayer.AspNetCore.SitemapXml/

Installation

NuGet package manager

Open the NuGet package manager and install MintPlayer.AspNetCore.SitemapXml in your project

Package manager console

Install-Package MintPlayer.AspNetCore.SitemapXml

Usage

Adding SitemapXML services

Add the SitemapXML services (Startup@ConfigureServices).

services.AddSitemapXml();

This call makes the ISitemapXml service available as a scoped service.

Enable XML formatters

Modify Startup@ConfigureServices

services
    .AddControllersWithViews(options => {
        options.RespectBrowserAcceptHeader = true;
    })
    .AddXmlSerializerFormatters()
    .AddMvcOptions(mvc_options => {
        mvc_options.OutputFormatters.Insert(0, new Microsoft.AspNetCore.Mvc.Formatters.XmlSerializerOutputFormatter());
    })
    .SetCompatibilityVersion(Microsoft.AspNetCore.Mvc.CompatibilityVersion.Latest);

Add SitemapController

An example of your SitemapController. Notice the use of the Produces attribute:

[Controller]
[Route("[controller]")]
public class SitemapController : Controller
{
    private ISitemapXml sitemapXml;
    private IPersonRepository personRepository;
    public SitemapController(ISitemapXml sitemapXml, IPersonRepository personRepository)
    {
        this.sitemapXml = sitemapXml;
        this.personRepository = personRepository;
    }

    [Produces("application/xml")]
    [HttpGet(Name = "sitemap-index")]
    public SitemapIndex Index()
    {
        const int per_page = 100;

        var people = personRepository.GetPeople().ToList();
        var person_urls = sitemapXml.GetSitemapIndex(people, per_page, (perPage, page) => Url.RouteUrl("sitemap-person", new { count = perPage, page }, Request.Scheme));
        
        return new SitemapIndex(person_urls);
    }

    [Produces("application/xml")]
    [HttpGet("{count}/{page}", Name = "sitemap")]
    public UrlSet Sitemap(int count, int page)
    {
        var people = personRepository.GetPeople(count, page);
        return new UrlSet(people.Select(p => {
            var url = new Url {
                Loc = $"{Request.Scheme}://{Request.Host}/person/{p.Id}",
                ChangeFreq = SitemapXml.Enums.ChangeFreq.Monthly,
                LastMod = p.DateUpdate,
            };
            url.Links.Add(new Link {
                Rel = "alternate",
                HrefLang = "nl",
                Href = $"{Request.Scheme}://{Request.Host}/person/{p.Id}?lang=nl"
            });
            url.Links.Add(new Link {
                Rel = "alternate",
                HrefLang = "fr",
                Href =  $"{Request.Scheme}://{Request.Host}/person/{p.Id}?lang=fr"
            });
            return url;
        }));
    }
}

Styling your sitemap

You can use an XSL stylesheet for your sitemaps. Modify Startup@ConfigureServices

services
    .AddControllersWithViews(options => {
        options.RespectBrowserAcceptHeader = true;
    })
    .AddXmlSerializerFormatters()
    .AddMvcOptions(mvc_options => {
        mvc_options.OutputFormatters.Insert(0, new Microsoft.AspNetCore.Mvc.Formatters.XmlSerializerOutputFormatter());
    })
    .AddSitemapXmlFormatters(options => {
        options.StylesheetUrl = "/assets/sitemap.xsl";
    })
    .SetCompatibilityVersion(Microsoft.AspNetCore.Mvc.CompatibilityVersion.Latest);

Now you can either put your own XSLT file in the ClientApp/src/assets folder, or call the UseDefaultSitemapXmlStylesheet middleware.

Using the built-in XML stylesheet

Put the following middleware before the app.UseMvc call:

app.UseDefaultSitemapXmlStylesheet(options => {
    options.StylesheetUrl = "/assets/sitemap.xsl";
});

Now an XML Stylesheet is hosted on the specified URL. You no longer need to put a sitemap.xsl in the assets folder.