.NET Core配置绑定在Ubuntu Nginx环境中失效及疑问

问题概述 #

Windows 11开发环境中正常运行的.NET Core 8应用，部署到Ubuntu 20.04（搭配Nginx应用服务器）后，Swagger可正常访问，但实际调用API时抛出内部服务器错误。日志显示启动代码中的配置绑定未正常工作，AuthorizationOptions实例绑定后无值，但该逻辑在开发机及VirtualBox中的Windows服务器上完全正常。

相关代码片段 #

配置绑定代码（启动逻辑中） #

var authorizationOptions = new AuthorizationOptions();
config.GetSection(AuthorizationOptions.ConfigKey).Bind(authorizationOptions);
// 绑定后authorizationOptions无值

AuthorizationOptions.cs #

public class AuthorizationOptions
{
    public const string ConfigKey = "Authorization";

    public string? ActiveProvider { get; set; }

    public List<AuthorizationProviderOptions>? Providers { get; set; }
} 

AuthorizationProviderOptions.cs #

public class AuthorizationProviderOptions
{
    public string Name { get; set; } = string.Empty;
    public string Domain { get; set; } = string.Empty;
    public string Audience { get; set; } = string.Empty;
    public string SecretKey { get; set; } = string.Empty;
    public string Issuer { get; set; } = string.Empty;
    public string TokenLifetime { get; set; } = string.Empty;
}

appsettings.json #

{   
    "Authorization": {
        "ActiveProvider": "JWT",
        "Providers": [
            {
                "Name": "Auth0",
                "Domain": "XXXXXXXXXXXXXXXXXXXXX",
                "SecretKey": "",
                "Issuer": "",
                "Audience": "XXXXXXXXXXXXXXXXXXXXX",
                "TokenLifetime": "20"
            },
            {
                "Name": "JWT",
                "Domain": "",
                "SecretKey": "XXXXXXXXXXXXXXXXXXXXX",
                "Issuer": "XXXXXXXXXXXXXXXXXXXXX",
                "Audience": "XXXXXXXXXXXXXXXXXXXXX",
                "TokenLifetime": "20"
            }
        ]
    }
}

环境信息 #

• .NET Version: 8
• Server: Ubuntu 20.04

补充更新 #

更新1：配置代码的调用位置 #

Program.cs（API项目）

var builder = WebApplication.CreateBuilder(args);
builder.Services.AddCAAuthentication(builder.Configuration);

AuthorizationInjectorServiceExtension.cs（API项目引用的类库中）

public static class AuthorizationInjectorServiceExtension
{
    public static IServiceCollection AddCAAuthentication(this IServiceCollection services, IConfigurationManager config)
    {
        var authorizationOptions = new AuthorizationOptions();
        config.GetSection(AuthorizationOptions.ConfigKey).Bind(authorizationOptions);

        // 基于authorizationOptions的值执行其他操作
    }    
}

更新2：问题解决及疑惑 #

将appsettings.json上移一级目录后，配置绑定恢复正常，问题解决。但暂不清楚具体原因：

• 原目录结构：/var/www/[mysitename]/html/[包含appsettings.json的站点文件]
• 解决后的目录结构：

  /var/www/[mysitename]/html/[站点文件]
  /var/www/[mysitename]/appsettings.json
  

注：使用html子目录是为了遵循Nginx/Ubuntu的部署风格，后续可根据需求调整。

内容的提问来源于stack exchange，提问作者Sang Suantak