Go --- 七牛云 上传文件 & Token demo
package main import ( "bytes" "crypto/hmac" "crypto/sha1" "encoding/base64" "encoding/json" "fmt" "io" "io/ioutil" "mime/multipart" "net/http" "os" "path/filepath" "time" ) var ( AccessKey = "MYqxCWi4Nrv114F4LeLaD9ekYTgnNdgvrBkyVvRS" SecretKey = "rHRBY7WTffwK5Na064oVm33sLKyg-Efph3KllhEa" ) func main() { /*官网文档 https://developer.qiniu.com/kodo/manual/1208/upload-token 用户根据业务需求,确定上传策略要素,构造出具体的上传策略。例如用户要向空间 my-bucket 上传一个名为 sunflower.jpg 的图片,授权有效期截止到 2015-12-31 00:00:00(该有效期指上传完成后在七牛生成文件的时间,而非上传的开始时间),并且希望得到图片的名称、大小、宽高和校验值。那么相应的上传策略各字段分别为: scope = 'my-bucket:sunflower.jpg' deadline = 1451491200 returnBody = '{ "name": $(fname), "size": $(fsize), "w": $(imageInfo.width), "h": $(imageInfo.height), "hash": $(etag) }' */ putPolicy := map[string]interface{}{} putPolicy["scope"] = "public:qiniuyun.go" putPolicy["deadline"] = time.Now().Unix() + int64(time.Hour/time.Second) //截至时间!!!一开始写了有效时长上去,而且1s是1e9 。。。 putPolicy["insertOnly"] = 0 putPolicy["returnBody"] = `{ "name": "$(fname)", "size": "$(fsize)", "w": "$(imageInfo.width)", "h": "$(imageInfo.height)", "hash": "$(etag)" }` putPolicyBytes, err := json.Marshal(putPolicy) if err != nil { panic(err.Error()) } fmt.Println("putPolicy:", string(putPolicyBytes)) encodedPutPolicy := base64.URLEncoding.EncodeToString(putPolicyBytes) fmt.Println("encodePutPolicy:", encodedPutPolicy) /*官网文档 sign = hmac_sha1(encodedPutPolicy, "<SecretKey>") #假设 SecretKey 为 MY_SECRET_KEY,实际签名为: sign = "c10e287f2b1e7f547b20a9ebce2aada26ab20ef2" 注意:签名结果是二进制数据,此处输出的是每个字节的十六进制表示,以便核对检查。 */ mac := hmac.New(sha1.New, []byte(SecretKey)) //坑点,顺序跟说的不一样???看了SDK才知道这样弄,不然一直bad token mac.Write([]byte(encodedPutPolicy)) //sign := fmt.Sprintf("%x\n", mac.Sum(nil)) //encodeSign := base64.URLEncoding.EncodeToString([]byte(sign)) digest := mac.Sum(nil) //坑点 /*官网文档 encodedSign = urlsafe_base64_encode(sign) #最终签名值为: encodedSign = "wQ4ofysef1R7IKnrziqtomqyDvI=" */ encodeSign := base64.URLEncoding.EncodeToString(digest) fmt.Println("encodeSign:", encodeSign) /*官网文档 uploadToken = AccessKey + ':' + encodedSign + ':' + encodedPutPolicy #假设用户的 AccessKey 为 MY_ACCESS_KEY ,则最后得到的上传凭证应为: uploadToken = "MY_ACCESS_KEY:wQ4ofysef1R7IKnrziqtomqyDvI=:eyJzY29wZSI6Im15LWJ1Y2tldDpzdW5mbG93ZXIuanBnIiwiZGVhZGxpbmUiOjE0NTE0OTEyMDAsInJldHVybkJvZHkiOiJ7XCJuYW1lXCI6JChmbmFtZSksXCJzaXplXCI6JChmc2l6ZSksXCJ3XCI6JChpbWFnZUluZm8ud2lkdGgpLFwiaFwiOiQoaW1hZ2VJbmZvLmhlaWdodCksXCJoYXNoXCI6JChldGFnKX0ifQ==" 注意:为确保客户端、业务服务器和七牛服务器对于授权截止时间的理解保持一致,需要同步校准各自的时钟。频繁返回 401 状态码时请先检查时钟同步性与生成 deadline 值的代码逻辑。 */ uploadToken := AccessKey + ":" + encodeSign + ":" + encodedPutPolicy form := map[string]string{"token": uploadToken, "key": "qiniuyun.go"} newfileUploadRequest("https://up-z2.qbox.me", form, "file", "./qiniuyun.go") } func newfileUploadRequest(uri string, form map[string]string, formFileName, path string) error { file, err := os.Open(path) if err != nil { return err } defer file.Close() body := &bytes.Buffer{} writer := multipart.NewWriter(body) for key, val := range form { err = writer.WriteField(key, val) if err != nil { return err } } part, err := writer.CreateFormFile(formFileName, filepath.Base(path)) if err != nil { return err } _, err = io.Copy(part, file) if err != nil { return err } err = writer.Close() if err != nil { return err } req, err := http.NewRequest("POST", uri, body) if err != nil { return err } req.Header.Set("Content-Type", writer.FormDataContentType()) req.Header.Set("Host", "upload.qiniu.com") req.Header.Set("Content-Length", fmt.Sprint(body.Len())) fmt.Println("reqHeader:", req.Header) resp, err := http.DefaultClient.Do(req) if err != nil { return err } defer resp.Body.Close() Body, err := ioutil.ReadAll(resp.Body) if err != nil { return err } fmt.Println("code:", resp.StatusCode, "\nheader:", resp.Header, "\n", string(Body)) return nil }