新建一个self hosted Owin+ SignalR Project(1)

OWIN是Open Web Server Interface for .Net 的首字母缩写,他的定义如下:

OWIN在.NET Web Server 与Web Application之间定义了一套标准接口,OWIN的目标是用于解耦Web Server和Web Application.基于此标准,鼓励开发者开发简单,灵活的模块,从而推进.Net Web Development开源生态系统的发展.之前.net开发的所有webSite和Web Application不得不和IIS绑定到一起部署,对于部署,相当笨重.而OWIN正好是为了解决这个问题!

1.新建一个Console项目

2.添加Owin self host 引用,打开NuGet 程序包管理平台,输入如下代码:

>install-package Microsoft.Aspnet.WebApi.OwinSelfHost

3.新建一个名字为StartUp.cs的类,添加如下代码:

using Owin;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web.Http;

namespace TestProgram
{
   public class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            //模仿站点配置
            HttpConfiguration config = new HttpConfiguration();
            //添加站点路由
            config.Routes.MapHttpRoute(
                name: "DefaultApi",
                routeTemplate: "api/{controller}/{action}/{id}", //这里为了类MVC特别加入了{action}
                defaults: new { id = RouteParameter.Optional });
            app.UseWebApi(config);
        }
    }
}

4.添加Controller,新建文件夹Controller,添加IndexController.cs,添加如下代码:

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;
using System.Web.Http;

namespace TestProgram.Controller
{
  public  class IndexController:ApiController
    {
        public string Get(string name)
        {
            return name;
        }
     }
}

5.将Owin站点启动,修改Program.cs,如下:

using Microsoft.Owin.Hosting;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

namespace TestProgram
{
    class Program
    {
        static void Main(string[] args)
        {
            //此入口是Owin站点的宿主
            string baseAddress = "http://localhost:9009/";//站点启动地址
            using (WebApp.Start<Startup>(baseAddress))
            {
                HttpClient client = new HttpClient();
                //var response = client.GetAsync(baseAddress + "api/index").Result;
                //Console.WriteLine(response);
                //Console.WriteLine(response.Content.ReadAsStreamAsync().Result);
                Console.ReadLine();//不让宿主程序结束
            }
        }
    }
}

6.运行程序,打开浏览器输入 http://localhost:9009/index/index?name="RemiHoston"

由于没有设置返回的数据类型,所以默认返回XMl格式,但是,只是返回字符串并不能满足要求;但是Owin self hosted 程序宿主于Console没有提供文件下载访问,所以我们要自己提供接口支持文件访问

7.添加静态文件访问的接口

修改IndexController.cs添加如下两个方法:

 [HttpGet]
        public HttpResponseMessage Index()
        {
            //构造文件路径,代码重构的时候可以把这一块代码封装成公用方法
            var currentRunPath = AppDomain.CurrentDomain.BaseDirectory;
            var substringBin = currentRunPath.IndexOf("bin");
            //返回Index.html文件
            var path = currentRunPath.Substring(, substringBin) + "Index.html";
            var httpResponseMessage = new HttpResponseMessage();
            httpResponseMessage.Content = new StringContent(File.ReadAllText(path), Encoding.UTF8);
            httpResponseMessage.Content.Headers.ContentType = new MediaTypeHeaderValue("text/html");
            //把文件内容读出来,以HttpResponseMessage的形式返回客户端
            return httpResponseMessage;
        }
        /// <summary>
        /// 获取静态文件,比如css,javascript
        /// </summary>
        /// <param name="fileName"></param>
        /// <returns></returns>
        [HttpGet]
        public HttpResponseMessage GetResource(string fileName)
        {
            //构造文件路径,代码重构的时候可以把这一块代码封装成公用方法
            var currentRunPath = AppDomain.CurrentDomain.BaseDirectory;
            var substringBin = currentRunPath.IndexOf("bin");
            var path = currentRunPath.Substring(, substringBin) + fileName;

            var httpResponseMessage = new HttpResponseMessage();
            if (!File.Exists(path))
            {
                httpResponseMessage.StatusCode = System.Net.HttpStatusCode.NotFound;
                return httpResponseMessage;
            }
            httpResponseMessage.Content = new StringContent(File.ReadAllText(path), Encoding.UTF8);
            httpResponseMessage.Content.Headers.ContentType = new MediaTypeHeaderValue("text/html");
            return httpResponseMessage;
        }

8.新建站点页面

站点根目录下新建Script文件夹,下载添加query-1.6.4.min.js,新建Index.html,添加如下代码:

<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="utf-8" />
    <title>Owin默认页</title>
    <!--通过站点接口,下载Jquery-->
    <script src="getresource?filename=scripts/jquery-1.6.4.min.js"></script>
    <script type="text/javascript">
        $(function () {$('body').append("<h1>Hello Owin!</h1>") })
    </script>
</head>
<body>
</body>
</html>

运行重新刷新,页面

至此,解决了Owin Self Hosted Console 程序加载页面的问题,下一篇将在此基础上新建SignalR程序!