Question

好的，我需要消费这个网络服务，我对此一无所知，我所知道的只是它的意思：它接收一个人的国民身份证号码并返回一些有关的信息。他的xml格式。我需要在aspx页面上从C＃客户端使用它。

由于我无法创建对WS的Web引用，所以我来到SO并首先询问： Unknown WebService description and consume it from C#

在那个问题上，我被建议宁愿做一个HttpClient而不是引用，所以我开始谷歌搜索并学习一些东西;现在我已经能够做到这一点：

protected void rutBTN_Click(object sender, EventArgs e) //This function triggers when the user clicks the button 
    {                                                   //aside the textbox where they're meant to input the ID number
        if (rutTB.Text != "")   //rutTB is the textbox aside the button
        {
            HttpClient client = new HttpClient(); // Here i'm creating an instance of an HTTP client
            var byteArray = Encoding.ASCII.GetBytes("user:password123"); //Load credentials into a byte array (censored since there should be the actual credentials)
            client.BaseAddress = new Uri("http://wschsol.mideplan.cl"); //Base address of the web-service
            var hResp = "mod_perl/xml/fps_by_rut?rut=" + rutTB.Text; //Creating a variable that holds the rest of the WS's URL with the ID number value added to it
            client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Basic", Convert.ToBase64String(byteArray)); //Server authentication header with the byte array turned into a string
            client.GetAsync(hResp).ContinueWith( //Here I'm sending the GET request to the WS
                (requestTask) =>
                    {
                        HttpResponseMessage resp = requestTask.Result;    //This task receives the WS's http response and assigns it to a HttpResponseMessage variable called resp
                        try
                        {
                            resp.EnsureSuccessStatusCode(); //This line is to check that the response was successful or else throw an exception
                            XmlDocument xmlResp = new XmlDocument(); //Creating an instance of an xml document
                            resp.Content.ReadAsStringAsync<XmlDocument>().ContinueWith(  //OK HERE IS WHERE I'M LOST AT, trying to take the content of the http response into my xml document instance
                            (readTask) =>
                            {
                                /* This is where i want to parse the xml document data obtained into some grids or something. */
                            });
                        }
                        catch (Exception ex)
                        {
                            throw new Exception(ex.Message, ex.InnerException);
                        }
                    });

        }
        else
        {
            testLBL.Text = "You must enter an RUT number"; // Error label
            testLBL.Visible = true;
        }
    }

我的VS2010强调了我失去的代码行。我知道这一行是错误的，我基于这个片段https://code.msdn.microsoft.com/introduction-to-httpclient-4a2d9cee;那个人将响应加载到JsonArray而不是XML Document。所以，如果你们能告诉我如何正确使用该代码行，以及我的功能是否有其他错误，我将非常感激。无论如何，webservice的响应是通过XML格式的浏览器发出的，所以也许我甚至不需要将它转换为xml文档？我很丢失，我还是软件开发方面的一个菜鸟，所以如果你们能帮助我，我将非常感激。

谢谢你们的帮助。

Answer 1

试试这个：

XmlDocument doc;
t.Result.Content.ReadAsStreamAsync().ContinueWith(
    (streamTask) =>
    {
        doc = new XmlDocument();
        doc.Load(streamTask.Result);
     });

然后，毕业于此：

var xmlStream = await t.Result.Content.ReadAsStreamAsync();
doc = new XmlDocument();
doc.Load(xmlStream);

在.NET 4.5中，使用＆＃34; await＆＃34;而不是＆＃34; ContinueWith＆＃34;如果可能的话。

无法在C＃上的xml文档中分配http响应内容

1 个答案: