package main

import (
   "encoding/json"
   "fmt"
   "github.com/volcengine/ve-tos-golang-sdk/v2/tos"
   "github.com/volcengine/ve-tos-golang-sdk/v2/tos/enum"
   "log"
   "net/http"
)

func main() {

   http.HandleFunc("/get_pre_sign_url", GetPreSignUrlHandler)

   listenPort := ":8000"
   if listenPort == "" {
      log.Fatal("failed to load _FAAS_RUNTIME_PORT")
   }
   fmt.Println("http ListenAndServe ", listenPort)
   log.Fatal(http.ListenAndServe(listenPort, nil))
}

var (
    //填写从抖音云--对象存储--配置获取的AK和SK
   accessKey  = "xxxxxxxxxx"
   secretKey  = "xxxxxx"
   // 如果部署在抖音云服务中，建议替换成内网域名
   endpoint   = "tos-cn-beijing.volces.com"
   region     = "cn-beijing"
   // 填写从抖音云--对象存储获取的桶的ID
   bucketName = "xxxxxxxxxx"
   httpClient = &http.Client{}
)

func GetPreSignUrlHandler(w http.ResponseWriter, r *http.Request) {
   // 初始化对象存储 client
   client, err := tos.NewClientV2(endpoint, tos.WithRegion(region), tos.WithCredentials(tos.NewStaticCredentials(accessKey, secretKey)))
   if err != nil {
      fmt.Fprint(w, "client init error")
      return
   }
   objectName := r.URL.Query().Get("object_name")
   // 调用Tos SDK 生成上传对象预签名
   url, err := client.PreSignedURL(&tos.PreSignedURLInput{
      HTTPMethod: enum.HttpMethodPut,
      Bucket:     bucketName,
      Key:        objectName,
   })
   if err != nil {
      fmt.Fprint(w, "get pre sign url error")
      return
   }
   data := make(map[string]string)
   data[objectName] = url.SignedUrl
   msg, err := json.Marshal(data)
   if err != nil {
      fmt.Fprint(w, "json marshal error")
      return
   }
   w.Header().Set("content-type", "application/json")
   w.Write(msg)
}

利用预签名 URL 在 Web 端进行上传示例

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <input id="uploadFile" type="file">
    <button onclick="upload()">上传</button>
    <script>
        function upload() {
            const uploadFile = document.querySelector("#uploadFile");
            const files = uploadFile.files;
            let xhr = new XMLHttpRequest();
            const fileReader = new FileReader();
            fileReader.readAsArrayBuffer(files[0]);
            fileReader.onloadend = function() {
                // 转换为二进制流
                const binaryData = fileReader.result;
                // 从服务端获取预签名URL, 本文档中获取预签名URL的接口名称为/get_pre_sign_url
                xhr.open("PUT", "XXX");
                xhr.onload = function(response) {
                console.log('reponse', response);
            }
            xhr.send(binaryData);
        };       
    }
    </script>
</body>
</html>

UGC 内容审核后文件权限从私有读转为公开读

文件上传到对象存储后，默认为私有读。UGC 内容建议审核后再修改文件权限为公开读，否则存在内容违规风险。

服务端Golang代码示例：修改文件权限为公开读

package main

import (
   "context"
   "fmt"
   "github.com/volcengine/ve-tos-golang-sdk/v2/tos"
   "github.com/volcengine/ve-tos-golang-sdk/v2/tos/enum"
   "log"
   "net/http"
)

func main() {
   
   http.HandleFunc("/put_object_public_read", PutObjectPublicReadHandler)

   listenPort := ":8000"
   if listenPort == "" {
      log.Fatal("failed to load _FAAS_RUNTIME_PORT")
   }
   fmt.Println("http ListenAndServe ", listenPort)
   log.Fatal(http.ListenAndServe(listenPort, nil))
}

var (
    //填写从抖音云--对象存储--配置获取的AK和SK
   accessKey  = "xxxxxxxxxx"
   secretKey  = "xxxxxx"
   // 如果部署在抖音云服务中，建议替换成内网域名
   endpoint   = "tos-cn-beijing.volces.com"
   region     = "cn-beijing"
   // 填写从抖音云--对象存储获取的桶的ID
   bucketName = "xxxxxxxxxx"
   httpClient = &http.Client{}
)


func PutObjectPublicReadHandler(w http.ResponseWriter, r *http.Request) {
    //初始化请求对象存储的client
   client, err := tos.NewClientV2(endpoint, tos.WithRegion(region), tos.WithCredentials(tos.NewStaticCredentials(accessKey, secretKey)))
   if err != nil {
      fmt.Fprint(w, "client init error")
      return
   }
   objectName := r.URL.Query().Get("object_name")

    // 调用Tos SDK将对象访问权限变更公开读
   acl := enum.ACLPublicRead
   _, err = client.PutObjectACL(context.TODO(), &tos.PutObjectACLInput{Bucket: bucketName, Key: objectName, ACL: acl})

   if err != nil {
      fmt.Fprint(w, "PutObjectACL error")
      return
   }
   w.Header().Set("content-type", "application/json")
   w.Write([]byte("success"))
}

多端场景文件上传到对象存储的最佳实践

​介绍​

​操作指引​

​获取对象存储 SDK访问密钥​

​预签名URL上传文件到对象存储​

​Golang代码示例​

​利用预签名 URL 在 Web 端进行上传示例​

​UGC 内容审核后文件权限从私有读转为公开读​

介绍

操作指引

获取对象存储 SDK访问密钥

预签名URL上传文件到对象存储

Golang代码示例

利用预签名 URL 在 Web 端进行上传示例

UGC 内容审核后文件权限从私有读转为公开读