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!