.net core2.0获取host的方法

╰半夏微凉° 2023-07-18 03:29 34阅读 0赞

Example there's an given url: **http://localhost:4800/account/login**

**获取整个url地址：**

在页面(cstml)中

Microsoft.AspNetCore.Http.Extensions.UriHelper.GetDisplayUrl(Context.Request);

在 Controller 中

Microsoft.AspNetCore.Http.Extensions.UriHelper.GetDisplayUrl(Request);

**获取请求的方式（scheme：http/https）:http**

In asp.net 4.6 -> Request.Url.Scheme

in .net core -> Context.Request.Scheme (cshtml) , in Controller -> Request.Scheme

**获取域名（不带端口号）\[Get the host\]:**

In asp.net 4.6 -> Request.Url.Host

in .net core -> Context.Request.Host.Host (cshtml) , in Controller -> Request.Host.Host

**获取域名（带端口号）\[Get the host\]: localhost:4800**

In asp.net 4.6 ->

in .net core -> Context.Request.Host.Value (cshtml) , in Controller -> Request.Host.Value

**获取路径（Get the path）: /account/login**

In asp.net 4.6:

In .net core: @Context.Request.Path (cshtml)

**获取端口号（Get port）: 4800 (if a url contains port)**

In asp.net 4.6: Request.Url.Port

In .net core: @Context.Request.Host.Port (cshtml) , in Controller -> Request.Host.Port

通过 urls 配置，详见 [Server URLs][]

public class Startup
    {
        public void Configure(IApplicationBuilder app, IConfiguration conf)
        {
            app.Run(async (context) =>
            {
                await context.Response.WriteAsync(conf["urls"]);
            });
        }
    }

后来参考 [Microsoft.AspNetCore.Rewrite][] 的源代码，写了一个扩展方法实现了。

namespace Microsoft.AspNetCore.Http
    {
        public static class HttpRequestExtensions
        {
            public static string GetAbsoluteUri(this HttpRequest request)
            {
                return new StringBuilder()
                    .Append(request.Scheme)
                    .Append("://")
                    .Append(request.Host)
                    .Append(request.PathBase)
                    .Append(request.Path)
                    .Append(request.QueryString)
                    .ToString();
            }
        }
    }

[Server URLs]: https://docs.microsoft.com/en-us/aspnet/core/fundamentals/hosting?tabs=aspnetcore2x#server-urls
[Microsoft.AspNetCore.Rewrite]: https://github.com/aspnet/BasicMiddleware/blob/dev/src/Microsoft.AspNetCore.Rewrite/Internal/RedirectToHttpsRule.cs