c#

C# Socket如何实现文件上传下载

小樊
200
2024-07-02 03:43:41
栏目: 编程语言

在C#中,可以使用Socket类来实现文件上传和下载。以下是一个简单的示例代码,用于实现文件上传和下载功能:

文件上传:

using System;
using System.IO;
using System.Net;
using System.Net.Sockets;

class FileUploadClient
{
    static void Main()
    {
        string filePath = "path/to/file.txt";
        string serverIp = "127.0.0.1";
        int serverPort = 8888;

        // 读取文件内容
        byte[] fileData = File.ReadAllBytes(filePath);

        // 连接服务器
        TcpClient client = new TcpClient(serverIp, serverPort);
        NetworkStream stream = client.GetStream();

        // 发送文件内容
        stream.Write(fileData, 0, fileData.Length);
        Console.WriteLine("File uploaded successfully");

        // 关闭连接
        stream.Close();
        client.Close();
    }
}

文件下载:

using System;
using System.IO;
using System.Net;
using System.Net.Sockets;

class FileDownloadClient
{
    static void Main()
    {
        string filePath = "path/to/save/file.txt";
        string serverIp = "127.0.0.1";
        int serverPort = 8888;

        // 连接服务器
        TcpClient client = new TcpClient(serverIp, serverPort);
        NetworkStream stream = client.GetStream();

        // 接收文件内容
        byte[] buffer = new byte[1024];
        int bytesRead;
        using (FileStream fileStream = new FileStream(filePath, FileMode.Create))
        {
            while ((bytesRead = stream.Read(buffer, 0, buffer.Length)) > 0)
            {
                fileStream.Write(buffer, 0, bytesRead);
            }
        }

        Console.WriteLine("File downloaded successfully");

        // 关闭连接
        stream.Close();
        client.Close();
    }
}

在以上示例中,FileUploadClient用于上传文件到服务器,FileDownloadClient用于从服务器下载文件。在上传文件时,先读取文件内容,然后通过TcpClient和NetworkStream来发送文件内容到服务器。在下载文件时,创建一个FileStream来保存接收到的文件内容。最后关闭连接并输出操作成功的消息。

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