C# 实现GET/POST请求

最新推荐文章于 2024-05-18 16:36:40 发布

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最新推荐文章于 2024-05-18 16:36:40 发布

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CC 4.0 BY-SA版权

文章标签： c#

原文链接：http://www.cnblogs.com/Adger/p/10856771.html

本文详细介绍了一个自定义的WebRequest类，该类用于处理HTTP请求，包括GET和POST方法。文章展示了如何创建请求、设置请求参数、发送数据并接收服务器响应。通过这个类，开发者可以更灵活地控制网络请求流程。

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详细代码如下

 public class MyWebRequest
    {
        private WebRequest request;
        private Stream dataStream;

        private string status;

        public String Status
        {
            get
            {
                return status;
            }
            set
            {
                status = value;
            }
        }

        public MyWebRequest(string url)
        {
            // Create a request using a URL that can receive a post.

            request = WebRequest.Create(url);
        }

        public MyWebRequest(string url, string method)
            : this(url)
        {

            if (method.Equals("GET") || method.Equals("POST"))
            {
                // Set the Method property of the request to POST.
                request.Method = method;
            }
            else
            {
                throw new Exception("Invalid Method Type");
            }
        }

        public MyWebRequest(string url, string method, string data)
            : this(url, method)
        {

            // Create POST data and convert it to a byte array.
            string postData = data;
            byte[] byteArray = 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.
            dataStream = request.GetRequestStream();

            // Write the data to the request stream.
            dataStream.Write(byteArray, 0, byteArray.Length);

            // Close the Stream object.
            dataStream.Close();

        }

        public string GetResponse()
        {
            // Get the original response.
            WebResponse response = request.GetResponse();

            this.Status = ((HttpWebResponse)response).StatusDescription;

            // Get the stream containing all content returned by the requested server.
            dataStream = response.GetResponseStream();

            // Open the stream using a StreamReader for easy access.
            StreamReader reader = new StreamReader(dataStream);

            // Read the content fully up to the end.
            string responseFromServer = reader.ReadToEnd();

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

            return responseFromServer;
        }
    }