Question

我想检索其GUID在Database中匹配的用户（类）的详细信息。我在WCF REST项目中使用了ASP.NET MVC个完整的网络服务。

但是，WebResponse response =response .GetResponse()在回复GUID和获取user数据时给出错误请求错误400。

这是Interface：

        [OperationContract]
        [WebInvoke( Method="POST",
                    RequestFormat = WebMessageFormat.Json,
                    ResponseFormat = WebMessageFormat.Json,
                    BodyStyle = WebMessageBodyStyle.WrappedRequest,
                    UriTemplate = "Edit/{guid}"
                   )]
        User Edit(string guid);

这是Controller Action：

public ActionResult Edit(string guid)
        {
            if (guid != "0")
            {

                WebRequest Request = WebRequest.Create("http://localhost:65000/Service1.svc/Edit/guid");
                // Set the Method property of the request to POST.
                Request.Method = "POST";
                // Create POST data and convert it to a byte array.
                string postData = guid;
                byte[] byteArray = System.Text.Encoding.UTF8.GetBytes(postData);
                // Set the ContentType property of the WebRequest.
                Request.ContentType = "application/x-www-form-urlencoded";
                // Set the ContentLength property of the WebRequest.
                Request.ContentLength = byteArray.Length;
                // Get the request stream.
                Stream dataStream = Request.GetRequestStream();
                // Write the data to the request stream.
                dataStream.Write(byteArray, 0, byteArray.Length);
                // Close the Stream object.
                dataStream.Close();
                // Get the response.
                WebResponse response = Request.GetResponse(); //THIS LINE GIVING BAD REQUEST ERROR 400

                // Get the stream containing content returned by the server.
                dataStream = response.GetResponseStream();
                // Open the stream using a StreamReader for easy access.
                StreamReader reader = new StreamReader(dataStream);
                // Read the content.
                string responseFromServer = reader.ReadToEnd();

                User UserData = JsonConvert.DeserializeObject<User>(responseFromServer);
                ViewData["UserData"] = UserData;

                //  Clean up the streams.
                reader.Close();
                dataStream.Close();
                response.Close();

                return View(UserData);
            }

            return View(new User());
        }

P.S：以下代码工作正常，使用WebGet检索所有用户。

我认为只有当我想要POST一些像guid和read response这样的数据时才会出现问题。

 public ActionResult Index()
        {
        WebRequest Request = WebRequest.Create("http://localhost:65000/Service1.svc/RetrieveAll");
        // Get the response.
        WebResponse Response = Request.GetResponse();
        // Get the stream containing content returned by the server.
        Stream DataStream = Response.GetResponseStream();
        // Open the stream using a StreamReader for easy access.
        StreamReader Reader = new StreamReader(DataStream);
        // Read the content.
        string ResponseFromServer = Reader.ReadToEnd();
        // Display the content.
        List<User> UserData = JsonConvert.DeserializeObject<List<User>>(ResponseFromServer);
        ViewData["UserData"] = UserData;
        // Clean up the streams.
        Reader.Close();
        DataStream.Close();
        Response.Close();
        return View();
    }

Answer 1

似乎网址不正确

WebRequest Request = WebRequest.Create（＆＃34; http://localhost:65000/Service1.svc/Edit / guid ＆＃34;）;

应该是（使用guid in url）

WebRequest Request = WebRequest.Create（＆＃34; http://localhost:65000/Service1.svc/Edit/6F9619FF-8B86-D011-B42D-00CF4FC964FF＆＃34;）;

Answer 2

我认为问题在于你没有使用字符串guid作为变量而是作为文本，我认为正确的URL就是这个：

WebRequest request = WebRequest.Create("http://localhost:65000/Service1.svc/Edit/" + guid);

如果您使用＆＃34; guid＆＃34;在＆＃34;＆＃34;内它将被用作原样，一个单词，而不是变量guid中的值。希望它有所帮助;）

Answer 3

作者：

我发现在检索用户数据时问题出现在dB连接中，问题中提到的代码是正确的。

WebResponse响应=响应.GetResponse（）在POST数据和GETing响应时给出Bad Request错误

3 个答案: