Nancy 返回值详解

小灰灰 2021-03-16 15:55 603阅读 0赞

简介

Nancy 是一个轻量级的，简单粗暴的framework用来构建基于HTTP的各种服务，兼容.Net和Mono。它的返回值也是多种多样的，适应各种不同的情况。包括Response.AsFile()、Response.AsRedirect()、 Response.AsImage()、 Response.AsJson()、Response.AsText()、 Response.AsXml()等

一：string

Get["/get"] = parameters =>
    {
       return "Nancy";
    }

二：返回视图，像MVC一样，需要有Views/Home/index.html网页才能成功

Get["/get"] = parameters =>
     {
     return View["/home/index.html"];
    
     }

三：Response

Post["/GetMore"] = p =>
    {
      Product pd = new Product();
      pd.Id = 10;
      pd.Address = "北京超越";
      pd.Name = "苹果手机";
      pd.Price = 1000;
     return Response.AsJson(pd);
     return Response.AsXml(pd);
    
    
    }

四：Response返回值源码

public static implicit operator Response(HttpStatusCode statusCode)
        {
            return new Response { StatusCode = statusCode };
        }
    
        public static implicit operator Response(int statusCode)
        {
            return new Response { StatusCode = (HttpStatusCode)statusCode };
        }
    
        public static implicit operator Response(string contents)
        {
            return new Response { Contents = contents, ContentType = "text/html", StatusCode = HttpStatusCode.OK };
        }
    
        public static implicit operator string(Response response)
        {
            return response.Contents;
        }

五：Contents源码

public static class FormatterExtensions
    {
        public static Response AsJson<TModel>(this IResponseFormatter formatter, TModel model)
        {
            return new JsonResponse<TModel>(model);
        }
    
        public static Response AsXml<TModel>(this IResponseFormatter formatter, TModel model)
        {
            return new XmlResponse<TModel>(model);
        }
    
        public static Response Image(this IResponseFormatter formatter, string imagePath)
        {
            return new ImageResponse(imagePath);
        }
    }

public static Action<Stream> Static(this IViewEngine engine, string virtualPath)
        {
            return stream => {
    
                var path = HostingEnvironment.MapPath(virtualPath);
    
                using (var reader = new StreamReader(path))
                {
                    using(var writer = new StreamWriter(stream))
                    {
                        writer.Write(reader.ReadToEnd());
                        writer.Flush();
                    }
                }
    
            };
        }，

六、自定义返回值

Get["/get"] = parameters =>
                {
                    var path = AppDomain.CurrentDomain.BaseDirectory + "/Views/home/index.html";
                    Response response = new Response();
                    response.ContentType = "text/html";
                    response.Contents = stream =>
                    {
                        using (var reader = new StreamReader(path))
                        {
                            using (var writer = new StreamWriter(stream))
                            {
                                writer.Write(reader.ReadToEnd());
                                writer.Flush();
                            }
                        }
                    };
    
                    return response;
    
                };