ASP.Net Core 2中的全局变量

本文介绍了ASP.Net Core 2中的全局变量的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在ASP.NET Core中开发一个Web应用程序，目前有大量密钥，例如条带帐户密钥.与其将它们分散在整个项目中的不同类中，我不希望将它们全部放置在json中，以便可以在全局范围内对其进行访问.我尝试将它们放置在appsettings.json中，但无法在任何地方访问它们.

I am developing a web application in ASP.NET Core and currently have a large set of keys, such as stripe account keys. Instead of having them spread throughout the project in different classes I would like to place them all together in json where they could be accessed globally. I have tried placing them in appsettings.json but cannot access them anywhere.

推荐答案

我经常用连接字符串和其他全局常量来做这种事情.首先为所需的变量创建一个类.在我的项目中，它是MDUOptions，但是您想要的任何内容.

I often do this kind of thing with connection strings and other global constants. First create a class for those variables that you need. In my project it is MDUOptions but whatever you want.

public class MDUOptions
{
    public string mduConnectionString { get; set; }
    public string secondaryConnectionString { get; set; }
}

现在在您的Startup.cs ConfigureServices方法中:

Now in your Startup.cs ConfigureServices method:

Action mduOptions = (opt =>
{
    opt.mduConnectionString = Configuration["ConnectionStrings:mduConnection"];
});
services.Configure(mduOptions);
services.AddSingleton(resolver => resolver.GetRequiredService>().Value);

现在ASP 变量，您可以使用DI通过代码访问它:

Now you use DI to access it in code:

public class PropertySalesRepository : IPropertySalesRepository

{
    private static string _mduDb;
    public PropertySalesRepository(MDUOptions options)
    {
        _mduDb = options.mduConnectionString;
    }
    ....
}

在我的情况下，我想要的唯一属性是字符串，但是我可以使用整个选项类.

In my case the only property I wanted was the string but I could have used the entire options class.

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