今天突然想起改良一下以前搭建的“windows service承载的web api”服务，以前也是直接引用的类库，没有使用nuget包，时隔几年应该很旧版本了吧。所以本次把需要nuget获取的包记录一下。

 还有几点需要注意一下：

1、设定webapi仅仅使用json格式

using System;using System.Collections.Generic;using System.Net.Http;using System.Net.Http.Formatting;using System.Net.Http.Headers;namespace NetMiddlewareSvr{    /// 
    /// Json格式头部类    /// 
    public class JsonContentNegotiator : IContentNegotiator    {        private readonly JsonMediaTypeFormatter _jsonFormatter;        public JsonContentNegotiator(JsonMediaTypeFormatter formatter)        {            _jsonFormatter = formatter;        }        public ContentNegotiationResult Negotiate(Type type, HttpRequestMessage request, IEnumerable
     
       formatters)        {            var result = new ContentNegotiationResult(_jsonFormatter, new MediaTypeHeaderValue("application/json"));            return result;        }    }}
     

2、修改默认路由规则：

using Owin;using System.Net.Http.Formatting;using System.Web.Http;namespace NetMiddlewareSvr{    public class RegisterRoutesStartup    {        public void Configuration(IAppBuilder appBuilder)        {            HttpConfiguration config = new HttpConfiguration();            //自定义路由            config.Routes.MapHttpRoute(              name: "CustomApi",              routeTemplate: "api/{controller}/{action}/{id}",              defaults: new { id = RouteParameter.Optional }            );            //只响应Json请求            var jsonFormatter = new JsonMediaTypeFormatter();            config.Services.Replace(typeof(IContentNegotiator), new JsonContentNegotiator(jsonFormatter));            appBuilder.UseWebApi(config);        }    }}

3、启动监听

public partial class NetMiddwareService : ServiceBase    {        private IDisposable hostObject;        public NetMiddwareService()        {            InitializeComponent();        }        protected override void OnStart(string[] args)        {            hostObject = hostObject = WebApp.Start
     
      ("http://" + "127.0.0.1" + ":5990");        }        protected override void OnStop()        {        }    }
     

 补充一下nuget的顺序：Microsoft.Owin->Microsoft.Owin.Hosting->Microsoft.AspNet.WebApi.Core,剩下的是依赖包自动导入的。当然log4net和Newtonsoft.Json不是owin的依赖包