如何在asp .net core web api的后台服务中获取主机URL? [英] How to get host URL in the background service in asp .net core web api?

问题描述

我有一个 Asp .Net 核心 web api，它将运行后台服务来每天安排一些任务并发送一些邮件.在邮件中，我需要有 api 的 url.有没有什么办法可以在除了控制器之外的后台服务中获取主机 URL.

I'm having an Asp .Net core web api which will run a background service to schedule some task daily and will send some mail. In the mail I need to have the url of the api. Is there any way to get the host URL in the background services other than controllers.

推荐答案

后台服务在 Web 请求范围之外运行，因此是后台服务.这意味着没有可用的 HTTP 上下文，您可以从中获取应用程序的主机.我建议您创建一个应用程序设置，在其中为当前环境配置主机，例如appsettings.Staging.json、appsettings.Production.json 等，并通过注入 IConfiguration 或特定选项类在您的后台服务中使用它.

Background services run outside the scope of a web request, hence background service. This means that there is no HTTP context available where you can grab the host of the application from. I suggest you create an application setting where you configure the host for the current environment, e.g. appsettings.Staging.json, appsettings.Production.json, etc and use that in your background service by injecting IConfiguration or a specific options class.

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