fix:文件上传--base64

utils/file/base64.go

@@ -0,0 +1,17 @@
+package file
+
+import (
+	"encoding/base64"
+	"strings"
+)
+
+func FileBase64ToByte(fileData string) ([]byte, error) {
+	RBase64Point := strings.LastIndex(fileData, ";base64,") + 8
+	fileDataStr := fileData[RBase64Point:]
+	dist, err := base64.StdEncoding.DecodeString(fileDataStr)
+
+	if err != nil {
+		return nil, err
+	}
+	return dist, nil
+}