1.创建后端项目AngularJs_WebApi

using System.Net.Http;
using System.Web.Http;

namespace AngularJs_WebApi_Server.Controllers
{
    public class TestController : ApiController
    {
        public HttpResponseMessage Get()
        {
            return new HttpResponseMessage()
            {
                Content = new StringContent("我是通过Get请求的")
            };
        }

        public HttpResponseMessage Post()
        {
            return new HttpResponseMessage()
            {
                Content = new StringContent("我是通过Post请求的")
            };
        }

        public HttpResponseMessage Put()
        {
            return new HttpResponseMessage()
            {
                Content = new StringContent("我是通过Put请求的")
            };
        }
    }
}