go语言tcp协议实现文件上传

一、客户端实现方案：

package main
 
import (
	"fmt"
	"io"
	"net"
	"os"
)
 
func sendFile(filePath string, conn net.Conn) {
	defer conn.Close()
 
	// 获取文件名
	fileInfo, err := os.Stat(filePath)
	if err != nil {
		fmt.Println("Error getting file info:", err)
		return
	}
	fileName := fileInfo.Name()
 
	// 发送文件名
	conn.Write([]byte(fileName))
 
	// 打开文件并发送文件内容
	file, err := os.Open(filePath)
	if err != nil {
		fmt.Println("Error opening file:", err)
		return
	}
	defer file.Close()
 
	_, err = io.Copy(conn, file)
	if err != nil {
		fmt.Println("Error copying file content:", err)
		return
	}
 
	fmt.Printf("File %s sent.\n", fileName)
}
 
func main() {
	conn, err := net.Dial("tcp", "localhost:8080")
	if err != nil {
		fmt.Println("Error connecting to server:", err)
		return
	}
	defer conn.Close()
 
	filePath := "C:\\zhangsan.txt" // 替换为实际文件