大屏

pkg/utils/local.go

@@ -0,0 +1,85 @@
+package tool
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+	"errors"
+	"io"
+	"mime/multipart"
+	"os"
+	"pandax/pkg/global"
+	"path"
+	"strings"
+	"time"
+)
+
+type Local struct {
+	Path string
+}
+
+//@object: *Local
+//@function: UploadFile
+//@description: 上传文件
+//@param: file *multipart.FileHeader
+//@return: string, string, error
+
+func (local *Local) UploadFile(file *multipart.FileHeader) (string, string, error) {
+	// 读取文件后缀
+	ext := path.Ext(file.Filename)
+	// 读取文件名并加密
+	name := strings.TrimSuffix(file.Filename, ext)
+	name = MD5V([]byte(name))
+	// 拼接新文件名
+	filename := name + "_" + time.Now().Format("20060102150405") + ext
+	// 尝试创建此路径
+	mkdirErr := os.MkdirAll(local.Path, os.ModePerm)
+	if mkdirErr != nil {
+		global.Log.Error("function os.MkdirAll() Filed", mkdirErr.Error())
+		return "", "", errors.New("function os.MkdirAll() Filed, err:" + mkdirErr.Error())
+	}
+	// 拼接路径和文件名
+	p := local.Path + "/" + filename
+
+	f, openError := file.Open() // 读取文件
+	if openError != nil {
+		global.Log.Error("function file.Open() Filed", openError.Error())
+		return "", "", errors.New("function file.Open() Filed, err:" + openError.Error())
+	}
+	defer f.Close() // 创建文件 defer 关闭
+
+	out, createErr := os.Create(p)
+	if createErr != nil {
+		global.Log.Error("function os.Create() Filed", createErr.Error())
+		return "", "", errors.New("function os.Create() Filed, err:" + createErr.Error())
+	}
+	defer out.Close() // 创建文件 defer 关闭
+
+	_, copyErr := io.Copy(out, f) // 传输（拷贝）文件
+	if copyErr != nil {
+		global.Log.Error("function io.Copy() Filed", copyErr.Error())
+		return "", "", errors.New("function io.Copy() Filed, err:" + copyErr.Error())
+	}
+	return p, filename, nil
+}
+
+//@object: *Local
+//@function: DeleteFile
+//@description: 删除文件
+//@param: key string
+//@return: error
+
+func (local *Local) DeleteFile(key string) error {
+	p := local.Path + "/" + key
+	if strings.Contains(p, local.Path) {
+		if err := os.Remove(p); err != nil {
+			return errors.New("本地文件删除失败, err:" + err.Error())
+		}
+	}
+	return nil
+}
+
+func MD5V(str []byte) string {
+	h := md5.New()
+	h.Write(str)
+	return hex.EncodeToString(h.Sum(nil))
+}