我用 Go 编写了这个 API,它使用 excelize 从我想上传到私有 GCS 存储桶的数据库中获取的数据创建一个 .xlsx 文件。但问题是在我上传文件后,它说文件类型是 application/zip
而不是 application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
。
type Connection struct {
Credential string
BucketName string
APIKey string
ProjectID string
AccessToken string
BaseURL string
GcpCredential *google.Credentials
}
func (conn *Connection) Upload(url, name string) (err error) {
ctx := context.Background()
client, err := storage.NewClient(ctx, option.WithCredentialsFile(conn.Credential))
if err != nil {
return err
}
err = write(client, conn.BucketName, name, url)
return err
}
func write(client *storage.Client, bucket, object, url string) error {
ctx := context.Background()
f, err := os.Open(url)
if err != nil {
return err
}
defer f.Close()
wc := client.Bucket(bucket).Object(object).NewWriter(ctx)
_, err = io.Copy(wc, f)
if err != nil {
return err
}
if err := wc.Close(); err != nil {
return err
}
return nil
}
//In other file, generate excel file and upload it using above code
xlsx := excelize.NewFile()
//setup file content
...
//save to local machine located in uploadURL
err = xlsx.SaveAs(uploadURL)
//then upload to GCS bucket
err = h.Googlestorage.Upload(uploadURL, fileNameInGCS)
if err != nil {
SendBadRequest(w, err.Error())
return
}
//then generate signed URL for client to access the file
这是一个问题,因为当我生成文件的签名 URL 时,它下载为 .zip 文件而不是 .xlsx。
"{file path in bucket}.xlsx?Expires=1617698911&
GoogleAccessId={googleAccessID}&
Signature={someGeneratedSignature}"
我该如何解决这个问题?我上传文件的方式有问题吗?
答案 0 :(得分:1)
您可以使用 ObjectHandle.Update function
_, err := client.Bucket(bucket).Object(object).Update(ctx, storage.ObjectAttrsToUpdate{
ContentType:"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
})