webapi中获取HttpContext

public OperationResultDto APILogin()
        {
LoginModel model = new LoginModel();
HttpContextBase context = (HttpContextBase)Request.Properties["MS_HttpContext"];//获取传统context
HttpRequestBase request = context.Request;//定义传统request对象
model.EID = request.Form["eid"];
model.Password = request.Form["password"];
　　}