概述

Ocelot面向使用.NET运行微型服务/面向服务的体系结构的人员，这些体系结构需要在系统中具有统一的入口点。特别是我想与IdentityServer参考和承载令牌轻松集成。Ocelot是按特定顺序排列的一堆中间件。Ocelot将HttpRequest对象操作到由其配置指定的状态，直到到达请求构建器中间件，在该中间件中它创建一个HttpRequestMessage对象，该对象用于向下游服务发出请求。发出请求的中间件是Ocelot管道中的最后一件事。它不会调用下一个中间件。有一块中间件可将HttpResponseMessage映射到HttpResponse对象，然后将其返回给客户端。基本上，它具有许多其他功能。

代码实现

1、新建api客户端1

2、新建api 网关test

3、nuget安装Ocelot

4、Program文件添加ConfigureAppConfiguration

public Program { public static void Main(string[] args) { CreateHostBuilder(args).Build().Run(); } public static IHostBuilder CreateHostBuilder(string[] args) => Host.CreateDefaultBuilder(args) .ConfigureAppConfiguration(conf => { conf.AddJsonFile("ocelot.json", false, true); }) .ConfigureWebHostDefaults(webBuilder => { webBuilder.UseStartup<Startup>(); }); }

5、Startup文件配置

services.AddOcelot(Configuration);

app.UseOcelot().Wait();

6、网关项目下添加文件ocelot.json

{ "ReRoutes": [ { "DownstreamPathTemplate": "/api/WeatherForecast/GetList", "DownstreamScheme": "http", "DownstreamHostAndPorts": [ { "Host": "localhost", "Port": 5000 } ], "UpstreamPathTemplate": "/GetList", "UpstreamHttpMethod": [ "Get" ] }, { "DownstreamPathTemplate": "/{everything}", "DownstreamScheme": "http", "DownstreamHostAndPorts": [ { "Host": "localhost", "Port": 5000 } ], "UpstreamPathTemplate": "/{everything}", "UpstreamHttpMethod": [ "Post" ] }, { "DownstreamPathTemplate": "/api/WeatherForecast/GetModel?id={s1}", "DownstreamScheme": "http", "DownstreamHostAndPorts": [ { "Host": "localhost", "Port": 5000 } ], "UpstreamPathTemplate": "/GetModel?id={s1}", "UpstreamHttpMethod": [ "Get" ] } ]}

7、2个项目运行，测试

代码地址

https://gitee.com/conanOpenSource_admin/Example/commit/b3b5a6b15a060b46c5ecd2ea31f0d36791cda18c