下载对象

func (s *ObjectService) Get(ctx context.Context, name string, opt *ObjectGetOptions) (*Response, error)
func (s *ObjectService) GetToFile(ctx context.Context, name string, localpath string, opt *ObjectGetOptions) (*Response, error)

type ObjectGetOptions struct {
    ResponseContentType        string
    ResponseContentLanguage    string
    ResponseExpires            string
    ResponseCacheControl       string
    ResponseContentDisposition string
    ResponseContentEncoding    string
    Range                      string
}

package main

import (
    "context"
    "io"
    "log"
    "net/http"
    "net/url"
    "os"
    "time"

    "github.com/tencentyun/cos-go-sdk-v5"
)

func main() {
    u, _ := url.Parse("https://examplebucket-x--1250000000.cosrapid.ap-guangzhou.myqcloud.com")
    b := &cos.BaseURL{BucketURL: u}
    base := &cos.AuthorizationTransport{
        SecretID:  os.Getenv("SECRETID"),
        SecretKey: os.Getenv("SECRETKEY"),
    }
    c := cos.NewClient(b, &http.Client{
        Transport: cos.NewRapidCredentialTransport(base),
        Timeout:   30 * time.Second,
    })

    ctx := context.Background()
    name := "exampleobject.txt"

    resp, err := c.Object.Get(ctx, name, nil)
    if err != nil {
        log.Fatalf("GetObject failed: %v", err)
    }
    defer resp.Body.Close()

    data, err := io.ReadAll(resp.Body)
    if err != nil {
        log.Fatalf("read object body failed: %v", err)
    }
    log.Printf("GetObject OK, size: %d", len(data))
}