下载对象

代码示例

以下代码用于下载文件：

package main

import (
    "fmt"
    "github.com/aws/aws-sdk-go/aws"
    "github.com/aws/aws-sdk-go/aws/credentials"
    "github.com/aws/aws-sdk-go/aws/session"
    "github.com/aws/aws-sdk-go/service/s3"
    "github.com/aws/aws-sdk-go/service/s3/s3manager"
    "os"
)

func exitErrorf(msg string, args ...interface{}) {
    fmt.Fprintf(os.Stderr, msg+"\n", args...)
    os.Exit(1)
}

func main() {
    sess, err := session.NewSession(&aws.Config{
        Region:      aws.String("Region"),
        Endpoint:    aws.String("your-endpoint"),
        Credentials: credentials.NewStaticCredentials("your-access-key", "your-secret-access-key", ""),
    })
    bucketName := "your-bucket-name"
    Key := "your-object-name"
    file, err := os.Create(Key)
    if err != nil {
        exitErrorf("Unable to open file %q, %v", err)
    }
    defer file.Close()
    downloader := s3manager.NewDownloader(sess)
    numBytes, err := downloader.Download(file,
        &s3.GetObjectInput{
            Bucket: aws.String(bucketName),
            Key:    aws.String(Key),
        })
    if err != nil {
        exitErrorf("Unable to download file %q, %v", Key, err)
    }
    fmt.Println("Downloaded", file.Name(), numBytes, "bytes")
}