Asp.net core 学习笔记 2.1 升级到 2.2

首先跟着官网 step by step 

https://docs.microsoft.com/en-us/aspnet/core/migration/21-to-22?view=aspnetcore-2.2&tabs=visual-studio

Bug 1 

发现一个 odata routing issue 

https://github.com/Microsoft/aspnet-api-versioning/issues/361

因为 2.2 router 有升级, 貌似 odata 没有跟上. 

https://blogs.msdn.microsoft.com/webdev/2018/08/27/asp-net-core-2-2-0-preview1-endpoint-routing/

目前只好先关上它  

options.EnableEndpointRouting = false;

然后继续追踪 

https://github.com/OData/WebApi/issues/1707

Bug 2

https://github.com/aspnet/AspNetCore/issues/6166

在做 webapi 又跨域的情况下, 游览器会发送 option request , 然而因为 2.2 有对 http2 之类的升级, 好像导致了 iis 的返回有点问题. 

具体原因我就不管了. 反正就是用 work around 顶一顶先. 

app.Use(async (ctx, next) =>
{
  await next();
  if (ctx.Response.StatusCode == 204)
  {
    ctx.Response.ContentLength = 0;
  }
});

持续追踪  https://github.com/aspnet/AspNetCore/issues/4398

Bug 3 

serilog-extensions-logging-file 好像不能用了...虽然这东西本来就没有维护了.

那就找替代吧. 

https://andrewlock.net/creating-a-rolling-file-logging-provider-for-asp-net-core-2-0/

https://nblumhardt.com/2017/08/use-serilog/

https://github.com/serilog/serilog-settings-configuration

https://stackoverflow.com/questions/40880261/configuring-serilog-rollingfile-with-appsettings-json

https://nblumhardt.com/2016/03/reading-logger-configuration-from-appsettings-json/

https://github.com/serilog/serilog-aspnetcore

https://github.com/serilog/serilog-sinks-file

appsetting.json

  "Serilog": {
    "MinimumLevel": {
      "Default": "Information",
      "Override": {
        "Microsoft": "Information",
        "System": "Warning",
        "Hangfire": "Warning"
      }
    },
    "Enrich": [ "FromLogContext", "WithMachineName", "WithThreadId" ],
    "WriteTo": [
      { "Name": "Console" },
      {
        "Name": "File",
        "Args": {
          "path": "Log/log.txt",
          "rollingInterval": 3
        }
      }
    ]
  },

main.cs

public static void Main(string[] args)
{
    CurrentDirectoryHelpers.SetCurrentDirectory();
        var configuration = new ConfigurationBuilder()
        .SetBasePath(Directory.GetCurrentDirectory())
        .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
        .AddJsonFile($"appsettings.{Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT") ?? "Production"}.json", optional: true)
        .AddEnvironmentVariables()
        .Build();
            
    Log.Logger = new LoggerConfiguration()
        .ReadFrom.Configuration(configuration)
        .CreateLogger();

    WebHost.CreateDefaultBuilder(args)
        .UseUrls("http://192.168.1.152:61547")
        .ConfigureSecretFromCloud(skipInDevelopmentMode: true)
        .UseSerilog()
        .UseStartup<Startup>().Build().Run();
}

替代方案很简单. 但是 2.2 有 bug ! 

https://github.com/aspnet/AspNetCore/issues/4206

因为 serilog 是在 main.cs 去获取 appsetting.json 然后 setup config 的. 而 2.2 iis 情况下有一个叫 In-Progress 的鬼. 

它会把 path 给弄不清楚. 幸好微软团队及时给了 work around 参考上面的 gitHub, 对话下方就有 word around 了.