.NET 6 发布时配置开发模式

项目发布后初期往往有各种问题，导致部署后我们看不到详细错误，所以我们发布的时候需要把项目模式设置为开发者模式，这样我们就能看到详细错误了。

.NET 5已经之前版本是这么配置的

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

        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder.UseStartup<Startup>().UseEnvironment("Development").ConfigureLogging((hostingContext, logging) =>
                    {
                        logging.AddConfiguration(hostingContext.Configuration.GetSection("Logging"));
                        logging.AddConsole();
                    });
                });
    }

　　

.NET 6没有Startup了，所以本次项目我也想这么配置发现直接设置builder.Host.UseEnvironment("Development");报错无法运行，

最后在github上摘到了答案,参考文章链接我放在了文章最后。

正常设置如下：

using System.Configuration;

//var builder = WebApplication.CreateBuilder(args);

//用 WebApplicationOptions 代替args
var builder = WebApplication.CreateBuilder(new WebApplicationOptions
{
    ApplicationName = typeof(Program).Assembly.FullName,
    ContentRootPath = Directory.GetCurrentDirectory(),
    EnvironmentName = Environments.Development,
    Args = args
});
// Add services to the container.
builder.Services.AddControllersWithViews();
builder.Logging.AddJsonConsole();
var app = builder.Build();

// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Home/Error");
}
app.UseStaticFiles();

app.UseRouting();

app.UseAuthorization();

app.MapControllerRoute(
    name: "default",
    pattern: "{controller=Home}/{action=Index}/{id?}");

app.Run();

参考：https://github.com/dotnet/aspnetcore/issues/36876