配置值始终返回null dotnet core 2.1 [英] Configuration value always returned null dotnet core 2.1

问题描述

嗨

我的应用程序是MVC Core 2.1应用程序，我按照此链接中的步骤操作

My app is MVC Core 2.1 application, I followed steps from this link

https://docs.microsoft.com/zh-cn/aspnet/core/security/key-vault-configuration?view=aspnetcore-2.1

https://docs.microsoft.com/en-us/aspnet/core/security/key-vault-configuration?view=aspnetcore-2.1

首先在Azure中，我已经注册了我的应用程序，并获取了我的三个参数KeyVault，appID和appSecret，并将它们放在一个名为azurekeyvault.json的json文件中，这里是其内容.

First in azure I've registred my application and get my three parameters the KeyVault, the appID and the appSecret and I put them in a json file that I named azurekeyvault.json here is its content 

{
  "azureKeyVault":{
    "保险柜":"keyvault-XXXX"，
    "ClientID":"XXX-XXX-XXX-XXX-XXX"，
    " ClientSecret" ;:" YYYY"
  }
}

{
  "azureKeyVault": {
    "Vault": "keyvault-XXXX",
    "ClientID": "XXX-XXX-XXX-XXX-XXX",
    "ClientSecret": "YYYY"
  }
}

此后，我在startup.cs中添加了一个私有方法，该方法是从configure方法调用的

After that I added a private method in startup.cs which I called from configure method 

  private void configAzureInit(IHostingEnvironment env)
        {
            var builder = new ConfigurationBuilder()
                .SetBasePath(env.ContentRootPath)
                .AddJsonFile("azurekeyvault.json"，可选:false);

            var config = builder.Build();


            builder.AddAzureKeyVault($"https://{config [" azureKeyVault:Vault]}.vault.azure.net/"，
                config ["azureKeyVault:ClientID"]，
                config ["azureKeyVault:ClientSecret"]);
            builder.Build(); 

 private void configAzureInit(IHostingEnvironment env)
        {
            var builder = new ConfigurationBuilder()
                .SetBasePath(env.ContentRootPath)
                .AddJsonFile("azurekeyvault.json", optional: false);

            var config = builder.Build();


            builder.AddAzureKeyVault($"https://{config["azureKeyVault:Vault"]}.vault.azure.net/",
                config["azureKeyVault:ClientID"],
                config["azureKeyVault:ClientSecret"]);
            builder.Build(); 

        }

        }

如果我使用
测试参数的检索，   var conn = config ["appSettings:connectionStings:parametername"];

if I test the retrival of the parameter with 
  var conn = config["appSettings:connectionStings:parametername"];

没有编译错误，总是获得空值，问题是代码有什么问题，我错过了一些步骤

There is not compilation errors and always get null value, the question is that somthing wrong with the code and did I miss some steps

谢谢

复杂性在于简单性跟我来:http://smartssolutions.blogspot.com

The complexity resides in the simplicity Follow me at: http://smartssolutions.blogspot.com

推荐答案

您是否尝试过包括这些参数在应用程序设置(而不是JSON文件)中进行引用，就像在 这个Github示例?

Have you tried including these parameters in the app settings instead of the JSON file and referencing that, as done in this Github sample?

该示例指南非常有用:https://github.com/aspnet/Docs/tree/master/aspnetcore/security/key-vault-configuration/samples/basic-sample/2.x

This sample guide is pretty helpful: https://github.com/aspnet/Docs/tree/master/aspnetcore/security/key-vault-configuration/samples/basic-sample/2.x

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