我正在使用 Google App 引擎，這意味著只允許通過云存盤寫入檔案。當 API 被命中時，我可以毫無問題地抓取檔案并將其存盤在谷歌云存盤中。該函式只回傳保存它的 URL。我想獲取該影像 URL，然后將其發送到 Cloudflare 影像，因為它們允許您創建變體。
type ImageResult struct {
Result struct {
ID string `json:"id"`
Filename string `json:"filename"`
Uploaded time.Time `json:"uploaded"`
RequireSignedURLs bool `json:"requireSignedURLs"`
Variants []string `json:"variants"`
} `json:"result"`
ResultInfo interface{} `json:"result_info"`
Success bool `json:"success"`
Errors []interface{} `json:"errors"`
Messages []interface{} `json:"messages"`
}
以上是表示 Cloudflare 回應的結構。下面是直接獲取谷歌云存盤 URL 并在將其發送到 Cloudflare 之前“下載”它的功能。
func CloudFlareURL(url, filename string) (*ImageResult, error) {
cloudFlareUrl := "https://api.cloudflare.com/client/v4/accounts/" konsts.CloudFlareAcc "/images/v1"
cloudFlareAuth := "Bearer " konsts.CloudFlareApi
r, err := http.Get(url)
if err != nil {
return nil, errors.Wrap(err, "Couldn't get the file")
}
if r.StatusCode != 200 {
return nil, errors.New("Couldn't get the file")
}
defer r.Body.Close()
buff := make([]byte, 4096)
_, err = r.Body.Read(buff)
req, err := http.NewRequest("POST", cloudFlareUrl, bytes.NewReader(buff))
if err != nil {
return nil, errors.Wrap(err, "Couldn't create the request")
}
req.Header.Set("Content-Type", "multipart/form-data")
req.Header.Set("Authorization", cloudFlareAuth)
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
return nil, errors.Wrap(err, "Couldn't send the request")
}
var result ImageResult
bodi := &bytes.Buffer{}
_, err = bodi.ReadFrom(resp.Body)
if err != nil {
return nil, errors.Wrap(err, "Couldn't read the response body")
}
resp.Body.Close()
err = json.Unmarshal(bodi.Bytes(), &result)
if err != nil {
return nil, errors.Wrap(err, "Couldn't unmarshal the response body")
}
return &result, nil
}
這是錯誤資訊； 尋找值開頭的無效字符“E”無法解組回應正文
現在在我的筆記本電腦上，如果我在發送檔案后運行 api 服務器，我可以將它保存在磁盤上，打開它并毫無問題地發送到 cloudflare。這是代碼
func CloudFlareFile(params map[string]string, paramName, path string) (*ImageResult, error) {
file, err := os.Open(path)
if err != nil {
return nil, err
}
defer file.Close()
body := &bytes.Buffer{}
writer := multipart.NewWriter(body)
part, err := writer.CreateFormFile(paramName, filepath.Base(path))
if err != nil {
return nil, err
}
_, err = io.Copy(part, file)
for key, val := range params {
_ = writer.WriteField(key, val)
}
err = writer.Close()
if err != nil {
return nil, err
}
cloudFlareUrl := "https://api.cloudflare.com/client/v4/accounts/" konsts.CloudFlareAcc "/images/v1"
cloudFlareAuth := "Bearer " konsts.CloudFlareApi
req, err := http.NewRequest("POST", cloudFlareUrl, body)
req.Header.Set("Content-Type", writer.FormDataContentType())
req.Header.Set("Authorization", cloudFlareAuth)
var result ImageResult
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
return nil, errors.Wrap(err, "Couldn't send the request")
} else {
body := &bytes.Buffer{}
_, err := body.ReadFrom(resp.Body)
if err != nil {
return nil, errors.Wrap(err, "Couldn't read the response body")
}
resp.Body.Close()
err = json.Unmarshal(body.Bytes(), &result)
if err != nil {
return nil, errors.Wrap(err, "Couldn't unmarshal the response body")
}
}
return &result, nil
}
我嘗試了變化，但總是失敗。例如;
req, err := http.NewRequest("POST", cloudFlareUrl, r.body)
if err != nil {
return nil, errors.Wrap(err, "Couldn't create the request")
}
req.Header.Set("Content-Type", "multipart/form-data")
req.Header.Set("Authorization", cloudFlareAuth)
uj5u.com熱心網友回復：
好的，其他有這個問題的人。我解決了。
r, err := http.Get(url)
if err != nil {
return nil, errors.Wrap(err, "Couldn't get the file")
}
if r.StatusCode != 200 {
return nil, errors.New("Couldn't get the file")
}
defer r.Body.Close()
b := &bytes.Buffer{}
a := make([]byte, 4096)
wr := multipart.NewWriter(b)
part, err := wr.CreateFormFile("file", filename)
if err != nil {
return nil, errors.Wrap(err, "Couldn't create the form file")
}
_, err = io.CopyBuffer(part, r.Body, a)
wr.Close()
req, err := http.NewRequest("POST", cloudFlareUrl, bytes.NewReader(b.Bytes()))
if err != nil {
return nil, errors.Wrap(err, "Couldn't create the request")
}
// req.Header.Set("Content-Type", "multipart/form-data")
req.Header.Set("Content-Type", wr.FormDataContentType())
req.Header.Set("Authorization", cloudFlareAuth)
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