我尝试get a image file from URL并使用文档here将其保存到GCS存储空间。
在我的AppEngine环境下,我无法弄清楚如何从response.Body
创建文件到GSC ...我无法使用os.Create创建并在此环境中引用文件路径,对吗?
response.Body
传递给wc.Write()
方法的提示。获取文件的代码:
func main() {
url := "http://i.imgur.com/m1UIjW1.jpg"
// don't worry about errors
response, e := http.Get(url)
if e != nil {
log.Fatal(e)
}
defer response.Body.Close()
//open a file for writing
file, err := os.Create("/tmp/asdf.jpg")
if err != nil {
log.Fatal(err)
}
// Use io.Copy to just dump the response body to the file. This supports huge files
_, err = io.Copy(file, response.Body)
if err != nil {
log.Fatal(err)
}
file.Close()
fmt.Println("Success!")
}
将本地文件保存到GCS
func (d *demo) createFile(fileName string) {
fmt.Fprintf(d.w, "Creating file /%v/%v\n", d.bucketName, fileName)
wc := d.bucket.Object(fileName).NewWriter(d.ctx)
wc.ContentType = "text/plain"
wc.Metadata = map[string]string{
"x-goog-meta-foo": "foo",
"x-goog-meta-bar": "bar",
}
d.cleanUp = append(d.cleanUp, fileName)
if _, err := wc.Write([]byte("abcde\n")); err != nil {
d.errorf("createFile: unable to write data to bucket %q, file %q: %v", d.bucketName, fileName, err)
return
}
if _, err := wc.Write([]byte(strings.Repeat("f", 1024*4) + "\n")); err != nil {
d.errorf("createFile: unable to write data to bucket %q, file %q: %v", d.bucketName, fileName, err)
return
}
if err := wc.Close(); err != nil {
d.errorf("createFile: unable to close bucket %q, file %q: %v", d.bucketName, fileName, err)
return
}
}
答案 0 :(得分:0)
您好像在寻找Writer和bytes.Buffer:
<meta http-equiv="Content-Security-Policy" content="default-src *; frame-src * ;">