Teach you step by step how to write Qiniu Cloud interface docking example in Go language

Teach you step by step how to write Qiniu Cloud interface docking example in Go language

Foreword:
With the rapid development of the Internet, cloud storage has become an increasingly popular solution. Qiniu Cloud is a leading cloud storage service provider in China, providing convenient and flexible storage service interfaces. This article will teach you step by step how to use Go language to write Qiniu Cloud interface docking examples.

Step 1: Introduce Qiniu Cloud SDK
First, we need to introduce Qiniu Cloud SDK into the Go project to facilitate us to operate cloud storage by calling the interface. The following are the steps to introduce the SDK:

1. Open the terminal and use the following command to download the Qiniu Cloud SDK:

   go get github.com/qiniu/api.v7

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2. Code in Go In the file, use the import statement to introduce the corresponding package:

   import (
    "github.com/qiniu/api.v7/auth/qbox"
    "github.com/qiniu/api.v7/storage"
   )

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Step 2: Configure the AccessKey and SecretKey of Qiniu Cloud
Next, we need to configure the AccessKey and SecretKey of Qiniu Cloud SecretKey so that the SDK can complete operations on cloud storage through these keys. The following are the steps to configure the key:

1. Log in and create a new account on the official website of Qiniu Cloud.
2. Find AccessKey and SecretKey on the account management page and record them.

3. In the Go code file, use the following code to configure the key:

   ak := "your-access-key"
   sk := "your-secret-key"
   mac := qbox.NewMac(ak, sk)

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Step 3: Upload files to Qiniu Cloud
Now, we can start to implement the function of uploading files to Qiniu Cloud. The following is a sample code for the implementation process:

filename := "path/to/your/file"
bucket := "your-bucket-name"
key := "your-file-key"
putPolicy := storage.PutPolicy{
    Scope: bucket + ":" + key,
}
upToken := putPolicy.UploadToken(mac)

cfg := storage.Config{
    Zone:          &storage.ZoneHuabei,
    UseHTTPS:      false,
    UseCdnDomains: false,
}
formUploader := storage.NewFormUploader(&cfg)
ret := storage.PutRet{}
err := formUploader.PutFile(context.Background(), &ret, upToken, key, filename, nil)
if err != nil {
    fmt.Println("上传文件失败：", err)
    return
}
fmt.Println("上传文件成功：", ret.Key)

Step 4: Download files from Qiniu Cloud
In addition to uploading files, we can also use the SDK to download files from Qiniu Cloud. The following is a sample code for the implementation process:

fileUrl := "your-file-url"
privateUrl := storage.MakePrivateURL(mac, fileUrl, 3600)
resp, err := http.Get(privateUrl)
if err != nil {
    fmt.Println("下载文件失败：", err)
    return
}
defer resp.Body.Close()

file, err := os.Create("path/to/save/downloaded/file")
if err != nil {
    fmt.Println("创建文件失败：", err)
    return
}
defer file.Close()

_, err = io.Copy(file, resp.Body)
if err != nil {
    fmt.Println("保存文件失败：", err)
    return
}

fmt.Println("文件下载成功")

Step 5: Delete files on Qiniu Cloud
Finally, we can also use the SDK to realize the function of deleting files on Qiniu Cloud. The following is a sample code of the implementation process:

bucketManager := storage.NewBucketManager(mac, &cfg)
var keyList []string
keyList = append(keyList, "your-file-key")
err := bucketManager.Delete(bucket, keyList)
if err != nil {
    fmt.Println("删除文件失败：", err)
    return
}
fmt.Println("删除文件成功")

Summary:
Through the above steps, we have successfully implemented an example of using the Go language to write Qiniu Cloud interface docking. Through this example, we can flexibly use Qiniu Cloud's cloud storage service without building our own server. I hope this article will help you understand the interface docking of Qiniu Cloud, and also hope that it can bring convenience to your project development.

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