demo/demo3.9/main.go

package main

import (
	"fmt"
	"io"
	"net/http"
	"os"
	"path/filepath"
	"strings"

	"github.com/gin-gonic/gin"
)

func main() {
	router := gin.Default()

	router.POST("/upload", func(c *gin.Context) {
		file, header, err := c.Request.FormFile("file")
		if err != nil {
			c.String(http.StatusBadRequest, fmt.Sprintf("文件上传失败: %s", err.Error()))
			return
		}
		defer file.Close()

		// 指定保存目录
		uploadDir := filepath.Join("./uploads", strings.Split(header.Filename, ".")[0])
		err = os.MkdirAll(uploadDir, os.ModePerm)
		if err != nil {
			c.String(http.StatusInternalServerError, fmt.Sprintf("创建上传目录失败: %s", err.Error()))
			return
		}

		// 指定保存文件路径
		filePath := filepath.Join(uploadDir, header.Filename)
		out, err := os.Create(filePath)
		if err != nil {
			c.String(http.StatusInternalServerError, fmt.Sprintf("保存文件失败: %s", err.Error()))
			return
		}
		defer out.Close()

		_, err = io.Copy(out, file)
		if err != nil {
			c.String(http.StatusInternalServerError, fmt.Sprintf("保存文件失败: %s", err.Error()))
			return
		}

		c.String(http.StatusOK, fmt.Sprintf("文件 %s 上传成功", header.Filename))
	})

	router.Run(":8080")
}