如何在Go中将文件放入亚马逊s3后获得文件url？

go get github.com/aws/aws-sdk-go/aws
go get github.com/aws/aws-sdk-go/aws/session
go get github.com/aws/aws-sdk-go/service/s3

package main

import (
    "fmt"
    "os"

    "github.com/aws/aws-sdk-go/aws"
    "github.com/aws/aws-sdk-go/aws/session"
    "github.com/aws/aws-sdk-go/service/s3"
)

func main() {
    // 创建会话
    sess, err := session.NewSession(&aws.Config{
        Region: aws.String("us-west-2"), // 根据你的S3存储桶所在地区设置
    })
    if err != nil {
        fmt.Println("Failed to create session:", err)
        return
    }

    // 创建S3服务客户端
    svc := s3.New(sess)

    // 设置S3存储桶名称和文件键
    bucket := "your-bucket-name"
    key := "your-file-key"

    // 打开文件
    file, err := os.Open("your-file-path")
    if err != nil {
        fmt.Println("Failed to open file:", err)
        return
    }
    defer file.Close()

    // 将文件上传到S3
    _, err = svc.PutObject(&s3.PutObjectInput{
        Bucket: aws.String(bucket),
        Key:    aws.String(key),
        Body:   file,
    })
    if err != nil {
        fmt.Println("Failed to upload file:", err)
        return
    }

    // 获取文件URL
    req, _ := svc.GetObjectRequest(&s3.GetObjectInput{
        Bucket: aws.String(bucket),
        Key:    aws.String(key),
    })
    url, err := req.Presign(15 * 60) // 生成一个15分钟有效的预签名URL
    if err != nil {
        fmt.Println("Failed to get file URL:", err)
        return
    }

    fmt.Println("File URL:", url)
}