一、添加webapi项目

      

二、nuget下载webapi所需的类库引用

  install-package microsoft.aspnet.webapi

  install-package microsoft.owin.host.systemweb

  install-package microsoft.aspnet.webapi.cors

三、webapi基础配置

 配置webapi路由、跨域支持

public static class webapiconfig
    {
        public static void register(httpconfiguration config)
        {
            //跨域配置
            config.enablecors(new enablecorsattribute("*", "*", "*"));

            //webapi路由
            config.maphttpattributeroutes();

            //设置webapi路由规则
            config.routes.maphttproute(
                name: "areaapi",
                routetemplate: "api/{area}/{controller}/{action}/{id}",
                defaults: new { id = routeparameter.optional }
            );
            config.routes.maphttproute(
                name: "webapi",
                routetemplate: "api/{controller}/{action}/{id}",
                defaults: new { id = routeparameter.optional }
            );

            //移除xml返回格式数据
            globalconfiguration.configuration.formatters.xmlformatter.supportedmediatypes.clear();

            //配置返回的时间类型数据格式  
            globalconfiguration.configuration.formatters.jsonformatter.serializersettings.converters.add(
                new newtonsoft.json.converters.isodatetimeconverter()
                {
                    datetimeformat = "yyyy-mm-dd hh:mm:ss"
                }
            );
        }
    }

 

 注册webapi

public class webapiapplication : system.web.httpapplication
    {
        protected void application_start()
        {
            arearegistration.registerallareas();

            globalconfiguration.configure(webapiconfig.register);
            filterconfig.registerglobalfilters(globalfilters.filters);
            routeconfig.registerroutes(routetable.routes);
        }
    }