WebApi系列~实际项目中如何使用HttpClient向web api发异步Get和Post请求并且参数于具体实体类型

    /// <summary>
    /// 用户业务接口
    /// </summary>
    public class UserController : ApiController
    {
        IUserService userService;

        public UserController()
        {
            userService = ServiceLocator.Instance.GetService<IUserService>();
        }
        // GET api/user
        public IEnumerable<WebManageUsers> Get()
        {
            return userService.GetWebManageUsers(new PageParameters(1, 10));
        }

        // GET api/user/5
        public WebManageUsers Get(int id)
        {
            return userService.GetWebManageUser(i => i.ManageUserID == id);
        }

        // POST api/user
        public void Post([FromBody]WebManageUsers value)
        {
            userService.InsertManageUsers(value);
        }

        // PUT api/user/5
        public void Put(int id, [FromBody]WebManageUsers value)
        {
            var entity = userService.GetWebManageUser(i => i.ManageUserID == id);
            if (entity != null)
            {
                entity = value.MapTo<WebManageUsers>();
                userService.ModifyManageUsers(entity);
            }
        }

        // DELETE api/user/5
        public void Delete(int id)
        {
            userService.DeleteManageUsers(new WebManageUsers { ManageUserID = id });
        }
    }

    public class HomeController : Controller
    {
        private HttpClient client = new HttpClient();
        private string url = "http://localhost:52824/api/user";
        private JsonMediaTypeFormatter formatter = System.Web.Http.GlobalConfiguration.Configuration.Formatters.Where(f =>
        {
            return f.SupportedMediaTypes.Any(v => v.MediaType.Equals("application/json", StringComparison.CurrentCultureIgnoreCase));
        }).FirstOrDefault() as JsonMediaTypeFormatter;

        public async Task<ActionResult> Index()
        {
            var data = await client.GetAsync(url);
            return View(data.Content.ReadAsAsync<IEnumerable<WebManageUsers>>());
        }

        public ActionResult Create()
        {
            return View();
        }
        [HttpPost]
        public async Task<ActionResult> Create(WebManageUsers entity)
        {
            entity.Password = string.Empty;
            entity.Status = 1;
            entity.CreateDate = DateTime.Now;
            entity.UpdateDate = DateTime.Now;
            entity.Description = string.Empty;
            entity.Operator = string.Empty;
            entity.RealName = string.Empty;
            entity.WebSystemID = 1;
            entity.DepartmentID = 1;
            var handler = new HttpClientHandler() { AutomaticDecompression = DecompressionMethods.GZip };
            using (var http = new HttpClient(handler))
            {
                var response = await http.PostAsync<WebManageUsers>(url, entity, formatter);
                return RedirectToAction("Index");
            }
        }
    }