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.除了控制器，还有什么办法可以在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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