C#用Socket进行TCP通信,如何接收并解析Xml的数据

在进行TCP通信时，接收到的数据是以字节流的形式传输的，因此需要将接收到的字节流转换为字符串，再解析字符串中的XML数据。

以下是一个示例代码，演示了如何使用C#的Socket进行TCP通信，并接收并解析XML数据：

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Xml;

class TcpListenerExample
{
    public static void Main()
    {
        TcpListener server = null;
        try
        {
            // Set the TcpListener on port 13000.
            Int32 port = 13000;
            IPAddress localAddr = IPAddress.Parse("127.0.0.1");

            // TcpListener server = new TcpListener(port);
            server = new TcpListener(localAddr, port);

            // Start listening for client requests.
            server.Start();

            // Buffer for reading data
            Byte[] bytes = new Byte[256];
            String data = null;

            // Enter the listening loop.
            while (true)
            {
                Console.Write("Waiting for a connection... ");

                // Perform a blocking call to accept requests.
                // You could also use server.AcceptSocket() here.
                TcpClient client = server.AcceptTcpClient();
                Console.WriteLine("Connected!");

                data = null;

                // Get a stream object for reading and writing
                NetworkStream stream = client.GetStream();

                int i;

                // Loop to receive all the data sent by the client.
                while ((i = stream.Read(bytes, 0, bytes.Length)) != 0)
                {
                    // Translate data bytes to a ASCII string.
                    data = Encoding.ASCII.GetString(bytes, 0, i);
                    Console.WriteLine("Received: {0}", data);

                    // Parse the XML data
                    XmlDocument xmlDoc = new XmlDocument();
                    xmlDoc.LoadXml(data);

                    // Do something with the XML data
                    XmlNodeList nodes = xmlDoc.GetElementsByTagName("message");
                    foreach (XmlNode node in nodes)
                    {
                        Console.WriteLine("Message: {0}", node.InnerText);
                    }

                    // Send a response back to the client.
                    byte[] msg = Encoding.ASCII.GetBytes("Message received.");
                    stream.Write(msg, 0, msg.Length);
                    Console.WriteLine("Sent: {0}", "Message received.");
                }

                // Shutdown and end connection
                client.Close();
            }
        }
        catch (SocketException e)
        {
            Console.WriteLine("SocketException: {0}", e);
        }
        finally
        {
            // Stop listening for new clients.
            server.Stop();
        }

        Console.WriteLine("\nHit enter to continue...");
        Console.Read();
    }
}

在上面的代码中，当接收到数据时，我们将其转换为字符串，并使用XmlDocument对象来解析XML数据。在本例中，我们假设XML数据包含一个名为“message”的元素，我们使用GetElementsByTagName方法获取所有名为“message”的元素，并遍历它们以输出其InnerText属性。你可以根据实际情况修改代码以适应你的XML数据结构。