部署dotnet Core Web API

上一步的文章，是我们公司最核心的一个ORM组件,在中标麒麟系统完成了一个插入数据的任务，这一步是将正式的从dot net framework 迁移到 dotnet core 的项目，部署运行在中标麒麟系统中。

项目预览

现有从dotnet framework 迁移过来的一个 dotnet core web api 项目，准备部署中标麒麟系统上测试运行，下面是项目截图：

dockerfile 中标麒麟 resolv 中标麒麟 .net core_服务器

运行 & 解决

将文件上传到服务器上，然后执行命令运行：

[root@gumis02 API]# dotnet Beyondbit.One.BUA.API.dll
Error:
  An assembly specified in the application dependencies manifest (Beyondbit.One.BUA.API.deps.json) was not found:
    package: 'Microsoft.ApplicationInsights.AspNetCore', version: '2.1.1'
    path: 'lib/netstandard1.6/Microsoft.ApplicationInsights.AspNetCore.dll'
  This assembly was expected to be in the local runtime store as the application was published using the following target manifest files:
    aspnetcore-store-2.0.0-linux-x64.xml;aspnetcore-store-2.0.0-osx-x64.xml;aspnetcore-store-2.0.0-win7-x64.xml;aspnetcore-store-2.0.0-win7-x86.xml
[root@gumis02 API]#

果不既然错误可能会迟到，但是绝不缺席，显示的错误是在开发过程中应用的nuget dll 找不到。这个问题是个小问题，已经有同学写了文章，Fix *.deps.json was not found，文章提到的解决办法：

增加如下一行到 csjproj文件中即可：false
最后csjproj文件看上去像这个样子：

<PropertyGroup>
    <TargetFramework>netcoreapp2.0</TargetFramework>
    <PublishWithAspNetCoreTargetManifest>false</PublishWithAspNetCoreTargetManifest>
  </PropertyGroup>

重新发布项目，然后运行上面的问题已经解决，出现其他的问题：

[root@gumis02 API]# dotnet Beyondbit.One.BUA.API.dll
warn: Microsoft.AspNetCore.DataProtection.KeyManagement.XmlKeyManager[35]
      No XML encryptor configured. Key {0372b52e-5124-4655-871b-906a0467a642} may be persisted to storage in unencrypted form.
Application startup exception: System.InvalidOperationException: No service for type 'Microsoft.AspNetCore.Http.IHttpContextAccessor' has been registered.
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider)
   at Beyondbit.Framework.StaticHttpContextExtensions.UseStaticHttpContext(IApplicationBuilder app, HttpContextOptions options)
   at Beyondbit.One.BUA.API.Startup.Configure(IApplicationBuilder app, IHostingEnvironment env) in E:\\u5de5\u4f5c\u533a\03 \u4e92\u8054\u7f51\03 \u7edf\u4e00\u7cfb\u5217\01_TFS\03\u7248\u672c\u7ba1\u7406\Beyondbit E-GOV Base System Suite\\u7edf\u4e00\u6388\u6743\CoreV1\Beyondbit.One.BUA.API\Startup.cs:line 49
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.AspNetCore.Hosting.ConventionBasedStartup.Configure(IApplicationBuilder app)
   at Microsoft.AspNetCore.Hosting.Internal.WebHost.BuildApplication()
crit: Microsoft.AspNetCore.Hosting.Internal.WebHost[6]
      Application startup exception
System.InvalidOperationException: No service for type 'Microsoft.AspNetCore.Http.IHttpContextAccessor' has been registered.
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider)
   at Beyondbit.Framework.StaticHttpContextExtensions.UseStaticHttpContext(IApplicationBuilder app, HttpContextOptions options)
   at Beyondbit.One.BUA.API.Startup.Configure(IApplicationBuilder app, IHostingEnvironment env) in E:\\u5de5\u4f5c\u533a\03 \u4e92\u8054\u7f51\03 \u7edf\u4e00\u7cfb\u5217\01_TFS\03\u7248\u672c\u7ba1\u7406\Beyondbit E-GOV Base System Suite\\u7edf\u4e00\u6388\u6743\CoreV1\Beyondbit.One.BUA.API\Startup.cs:line 49
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.AspNetCore.Hosting.ConventionBasedStartup.Configure(IApplicationBuilder app)
   at Microsoft.AspNetCore.Hosting.Internal.WebHost.BuildApplication()

Unhandled Exception: System.InvalidOperationException: No service for type 'Microsoft.AspNetCore.Http.IHttpContextAccessor' has been registered.
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider)
   at Beyondbit.Framework.StaticHttpContextExtensions.UseStaticHttpContext(IApplicationBuilder app, HttpContextOptions options)
   at Beyondbit.One.BUA.API.Startup.Configure(IApplicationBuilder app, IHostingEnvironment env) in E:\\u5de5\u4f5c\u533a\03 \u4e92\u8054\u7f51\03 \u7edf\u4e00\u7cfb\u5217\01_TFS\03\u7248\u672c\u7ba1\u7406\Beyondbit E-GOV Base System Suite\\u7edf\u4e00\u6388\u6743\CoreV1\Beyondbit.One.BUA.API\Startup.cs:line 49
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.AspNetCore.Hosting.ConventionBasedStartup.Configure(IApplicationBuilder app)
   at Microsoft.AspNetCore.Hosting.Internal.WebHost.BuildApplication()
   at Microsoft.AspNetCore.Hosting.WebHostBuilder.Build()
   at Beyondbit.One.BUA.API.Program.Main(String[] args) in E:\\u5de5\u4f5c\u533a\03 \u4e92\u8054\u7f51\03 \u7edf\u4e00\u7cfb\u5217\01_TFS\03\u7248\u672c\u7ba1\u7406\Beyondbit E-GOV Base System Suite\\u7edf\u4e00\u6388\u6743\CoreV1\Beyondbit.One.BUA.API\Program.cs:line 17
\u5df2\u653e\u5f03 (core dumped)
[root@gumis02 API]#

错误提示确实依赖：
在Starpup.cs 加入一段话：

services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();

如：

public void ConfigureServices(IServiceCollection services)
  {
      services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();

      services.AddMvc(options =>
      {
          options.Filters.Add<IdentityActionFilter>();
          options.Filters.Add<JsonpActionFilter>();
      });

      services.AddDistributedMemoryCache();
      services.AddSession();

      services.AddCors();
  }

最后运行成功了：

[root@gumis02 API]# dotnet Beyondbit.One.BUA.API.dll
Hosting environment: Production
Content root path: /var/ftp/uffice/BUA One/API
Now listening on: http://localhost:5000
Application started. Press Ctrl+C to shut down.

增加多域名，多IP支持

如上面的步骤，在服务器内部使用http://localhost:5000，但是在服务器外用 http://服务器IP:5000 访问的时候访问不到，而且是防火墙在禁用的情况下。 在服务器查看端口开放，使用以下命令：

[root@gumis02 ~]# netstat -an | grep 5000
tcp        0      0 127.0.0.1 5000                     :::*                        LISTEN      
tcp        0      0 ::1 5000                     :::*                        LISTEN      
[root@gumis02 ~]#

可以看到服务器5000端口是针对 127.0.0.1和localhost才可以访问到，这两个都是在服务器内部使用的。
按照.net core 启动域名及端口配置 文章中 linux环境一节说明的配置，将代码改造以下，支持在服务器外访问。

  1. 首先在解决方案中添加一个文件hosting.josn，内容如下：
{
  "server.urls": "http://*:5000"
}

然后在program.cs文件中修改启动代码：

namespace Beyondbit.One.BUA.API
{
    public class Program
    {
        public static void Main(string[] args)
        {
            BuildWebHost(args).Run();
        }

        public static IWebHost BuildWebHost(string[] args)
        {
            var config = new ConfigurationBuilder()
                        .SetBasePath(Directory.GetCurrentDirectory())
                        .AddJsonFile("hosting.json", optional: true)
                        .Build();

            var host = new WebHostBuilder()
                .UseKestrel()
                .UseConfiguration(config)
                .UseContentRoot(Directory.GetCurrentDirectory())
                .UseIISIntegration()
                .UseStartup<Startup>()
                .Build();

            return host;
        }
    }
}

编译发布到服务器上，运行站点，然后查看命令：

[root@gumis02 ~]# netstat -an | grep 5000
tcp        0      0 ::: 5000                     :::*                        LISTEN      
[root@gumis02 ~]#

可以看到 5000前面变成了 :::，而不是第一次的127.0.0.1或::1，这代表5000端口任何ip指向到这个服务器，都可以通过IP:5000访问，在服务器外用浏览器测试看到效果正常。