.net core 2.2下配置中addjsonfile选项的默认值是什么?

请参阅以下位置的源代码: https://github.com/aspnet/Configuration/blob/master/src/Config.Json/JsonConfigurationExtensions.cs

根据这一点,如果不提供参数,它们是错误的。请注意以下方法:

        /// <summary>
        /// Adds the JSON configuration provider at <paramref name="path"/> to <paramref name="builder"/>.
        /// </summary>
        /// <param name="builder">The <see cref="IConfigurationBuilder"/> to add to.</param>
        /// <param name="path">Path relative to the base path stored in 
        /// <see cref="IConfigurationBuilder.Properties"/> of <paramref name="builder"/>.</param>
        /// <returns>The <see cref="IConfigurationBuilder"/>.</returns>
        public static IConfigurationBuilder AddJsonFile(this IConfigurationBuilder builder, string path)
        {
            return AddJsonFile(builder, provider: null, path: path, optional: false, reloadOnChange: false);
        }
}

正如您在前面的问题中提到的,您可以使用此方法的另一个重载来设置ReloadChange值。下面是示例代码 from MSDN :

public class Program
{

    public static void Main(string[] args)
    {
        CreateWebHostBuilder(args).Build().Run();
    }

    public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
        WebHost.CreateDefaultBuilder(args)
            .ConfigureAppConfiguration((hostingContext, config) =>
            {
                config.AddJsonFile("appsettings.json", optional: false, reloadOnChange: false);

                config.AddCommandLine(args);
            })
            .UseStartup<Startup>();
}