c# 如何像这样发送 HTTP 命令 - http://192.168.10.1/api/control?alert=101002

Question

我有来自 Patlite 的 hardware，这个硬件有HTTP命令控制功能，比如我把url“http://192.168.10.1/api/control?alert=101002”复制到我电脑里的chrome，它会根据需要激活硬件

我想从我的代码发送命令。

我尝试了这段代码但没有成功：

System.Net.ServicePointManager.Expect100Continue = false;
        WebRequest request = WebRequest.Create("http://10.0.22.222/api/control");
        request.Method = "post";
        request.ContentType = "application/x-www-form-urlencoded";
        string postData = "alert=101002";
        byte[] byteArray = Encoding.UTF8.GetBytes(postData);
        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();
        WebResponse response = request.GetResponse();

说明书上有图：

谢谢

Answer 1

您需要为此创建一个 webrequest 实例。

WebRequest request = WebRequest.Create("http://192.168.10.1/api/control?alert=101002");
WebResponse response = request.GetResponse();

您可能需要将一些属性设置为请求方法和凭据才能正常工作。

看到这个：

https://msdn.microsoft.com/en-us/library/456dfw4f(v=vs.100).aspx

Answer 2

public static string Get(string url, Encoding encoding)
        {
            try
            {
                var wc = new WebClient { Encoding = encoding };
                var readStream = wc.OpenRead(url);
                using (var sr = new StreamReader(readStream, encoding))
                {
                    var result = sr.ReadToEnd();
                    return result;
                }
            }
            catch (Exception e)
            {
                //throw e;
                return e.Message;
            }
        }

喜欢这个代码使用url“http://192.168.10.1/api/control?alert=101002”发送得到request.Good幸运！

c# 如何像这样发送 HTTP 命令 - http://192.168.10.1/api/control?alert=101002

c# How to send HTTP command as this - http://192.168.10.1/api/control?alert=101002

c#

asp.net

post

webrequest

httpwebrequest