我正在使用 asp .net core web API 6.0(干净的架构项目)。
这是我的 appsettings.Production.json 和 appsettings.Development.json
{
"Tokens": {
"Key": "my-token",
"Issuer": "issuer",
"Audience": "audience",
"ExpirationInMinutes": 1440
},
// removed rest
}
using Microsoft.Extensions.Configuration;
public static IServiceCollection AddTokenAuthentication(this IServiceCollection services, IConfiguration config)
{
var secret = config.GetValue<string>("Tokens:Key"); // this value is null while running in development / production mode.
var key = Encoding.ASCII.GetBytes(secret);
// removed rest
}
我在开发/生产环境运行时终端报错
Unhandled exception. System.ArgumentNullException: String reference not set to an instance of a String. (Parameter 's') at System.Text.Encoding.GetBytes(String s) at Infrastructure.Files.AuthenticationExtension.AddTokenAuthentication(IServiceCollection services, IConfiguration config) in /src/Infrastructure/Files/AuthenticationExtension.cs:line 14 at Infrastructure.DependencyInjection.AddInfrastructure(IServiceCollection services, IConfiguration configuration) in /src/Infrastructure/DependencyInjection.cs:line 75 at Program.<Main>$(String[] args) in/src/WebApi/Program.cs:line 21 Aborted (core dumped)
注意:
如果我像这样硬编码 secret
的值
var secret = "my-token";
那么项目在两个环境中都运行良好。
在开发和生产环境中运行时,所有环境变量均为空。
GetConnectionString
的相同错误
public static IServiceCollection AddInfrastructure(this IServiceCollection services, IConfiguration configuration)
{
services.AddDbContext<DbContext>(options =>
options.UseNpgsql(
configuration.GetConnectionString("DefaultConnection"), // this is also null while running in both environment.. If I hard-coded then working fine
b => b.MigrationsAssembly(typeof(DbContext).Assembly.FullName))
.EnableSensitiveDataLogging());
// removed rest
}
为什么会这样? 我的代码有错误吗? 请帮我找出错误?
编辑:
我也试过从 appsettings.Development.json
复制所有内容并将其粘贴到 appsettings.json
那是行不通的。
这是我的 启动设置.json
"WebApi": {
"commandName": "Project",
"dotnetRunMessages": true,
"launchBrowser": false,
"launchUrl": "swagger",
"applicationUrl": "http://localhost:5000",
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Development"
}
},
"WebApi-Production": {
"commandName": "Project",
"dotnetRunMessages": true,
"launchBrowser": true,
"applicationUrl": "https://localhost:7152;http://localhost:5105",
"environmentVariables": {
"ASPNETCORE_ENVIRONMENT": "Production"
}
},
最佳答案
生产环境是否设置环境变量ASPNETCORE_ENVIRONMENT=Production?
默认情况下,ASP.NET Core 将从 appsettings.json 文件和 appsettings.Environment.json 文件(例如 appsettings.Development.json)读取配置。
您可以在生产环境中设置 ASPNETCORE_ENVIRONMENT=Production 或在 appsettings.json 文件中设置生产配置。
这些文档可能对您有帮助:
----------------例如------------
我的 appsettings.json
{
"EFCoreSlowQuery": {
"ServiceName": "json",
"SlowQueryThresholdMilliseconds": 10
}
}
关于c# - 无法在 asp.net core web API 6.0 中获取环境变量,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/71206350/