.net framework 4.5 +steeltoe+ springcloud 实现服务注册功能

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首先得先了解并熟悉一下springcloud，并手动去搭建一个服务中心，也可参照eurake官方示例。

如果是.net core的话，实现注册也是没有问题的，网上教程很多，可自行度娘。

最难的就是基于Framework的项目怎么实现注册，跟core的实现方式区别还是蛮大的，研究过程中也有不少坑。

下面就分享一下我踩完坑之后初步总结的实现步骤：

1.用VS2017或者其他创建NF4.5+的webAPI项目(webAPI的结构基本是保持MVC一致的，所以MVC项目基本也能按这个步骤来的)

2.在项目根目录内新建文件appsettings.json（这个文件主要是配置服务中心eurke地址等信息的):

{

  "spring": {

    "application": {

      "name": "demoService"

    }

  },

  "eureka": {

    "client": {

      "serviceUrl": "http://localhost:8761/eureka/",//服务中心地址

      "shouldFetchRegistry": false,

      "shouldRegisterWithEureka": true,//是否允许注册到服务中心

      "validate_certificates": false

    },

    "instance": {

      "port": 

    }

  },

  "Logging": {

    "IncludeScopes": false,

    "LogLevel": {

      "Default": "Debug",

      "Pivotal": "Debug",

      "Steeltoe": "Debug"

    }

  }

}

3.在项目文件夹App_Start下创建ApplicationConfig.cs：

public static class ApplicationConfig

    {



        public static IConfigurationRoot Configuration { get; set; }



        public static void RegisterConfig(string environment)

        {

            // Set up configuration sources.

            var builder = new ConfigurationBuilder()

                .SetBasePath(GetContentRoot())

                .AddJsonFile("appsettings.json", optional: false, reloadOnChange: false)

                .AddJsonFile($"appsettings.{environment}.json", optional: true)

                .AddCloudFoundry()

                .AddEnvironmentVariables();



            Configuration = builder.Build();

        }



        public static string GetContentRoot()

        {

            var basePath = (string)AppDomain.CurrentDomain.GetData("APP_CONTEXT_BASE_DIRECTORY") ??

               AppDomain.CurrentDomain.BaseDirectory;

            return Path.GetFullPath(basePath);

        }

    }

注意这里需要添加的引用：

using Microsoft.Extensions.Configuration;

using Steeltoe.Extensions.Configuration.CloudFoundry;

这两个是需要在引用点右键选择NuGet程序包里添加的。

4.修改Global.asax文件，在Application_Start()内加入代码：

GlobalConfiguration.Configure(WebApiConfig.Register);



 var config = GlobalConfiguration.Configuration;



// Build application configuration

 ApplicationConfig.RegisterConfig("development");



 var builder = new ContainerBuilder();



// Add Microsoft Options to container

  builder.RegisterOptions();



// Add Microsoft Logging to container

  builder.RegisterLogging(ApplicationConfig.Configuration);



// Add Console logger to container

  builder.RegisterConsoleLogging();



// Register your Web API controllers.

  builder.RegisterApiControllers(Assembly.GetExecutingAssembly());



// Register IDiscoveryClient, etc.

  builder.RegisterDiscoveryClient(ApplicationConfig.Configuration);



// Initialize and Register FortuneContext

  builder.RegisterInstance(SampleData.InitializeFortunes()).SingleInstance();



// Register FortuneRepository

  builder.RegisterType<FortuneRepository>().As<IFortuneRepository>().SingleInstance();



  var container = builder.Build();

  config.DependencyResolver = new AutofacWebApiDependencyResolver(container);



// Get a logger from container

  var logger = container.Resolve <ILogger<WebApiApplication>>();



  logger.LogInformation("Finished container build, starting background services");



// Start the Discovery client background thread

  container.StartDiscoveryClient();



  logger.LogInformation("Finished starting background services");

添加引用：

using Autofac;

using Autofac.Integration.WebApi;

using Microsoft.Extensions.Logging;

using Microsoft.Extensions.Logging.Console;

using Pivotal.Discovery.Client;

using Steeltoe.Common.Discovery;

using Steeltoe.Common.Logging.Autofac;

using Steeltoe.Common.Options.Autofac;

using System;

using System.Diagnostics;

using System.Reflection;

using System.Web.Http;