presigned url, and demo

example/object/getByPresignedURL.go

@@ -0,0 +1,65 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"net/url"
+	"os"
+	"time"
+
+	"io/ioutil"
+
+	"bytes"
+	"net/http"
+
+	"github.com/tencentyun/cos-go-sdk-v5"
+	"github.com/tencentyun/cos-go-sdk-v5/debug"
+)
+
+func main() {
+	ak := os.Getenv("COS_SECRETID")
+	sk := os.Getenv("COS_SECRETKEY")
+	u, _ := url.Parse("https://test-1253846586.cos.ap-guangzhou.myqcloud.com")
+	b := &cos.BaseURL{BucketURL: u}
+	c := cos.NewClient(b, &http.Client{
+		Transport: &cos.AuthorizationTransport{
+			SecretID:  ak,
+			SecretKey: sk,
+			Expire:    time.Hour,
+			Transport: &debug.DebugRequestTransport{
+				RequestHeader:  true,
+				RequestBody:    true,
+				ResponseHeader: true,
+				ResponseBody:   true,
+			},
+		},
+	})
+
+	name := "test"
+	ctx := context.Background()
+
+	// Normal header way to get object
+	resp, err := c.Object.Get(ctx, name, nil)
+	if err != nil {
+		panic(err)
+	}
+	bs, _ := ioutil.ReadAll(resp.Body)
+	resp.Body.Close()
+
+	// Get presigned
+	presignedURL, err := c.Object.GetPresignedURL(ctx, http.MethodGet, name, ak, sk, time.Hour, nil)
+	if err != nil {
+		panic(err)
+	}
+	// Get object by presinged url
+	resp2, err := http.Get(presignedURL.String())
+	if err != nil {
+		panic(err)
+	}
+	bs2, _ := ioutil.ReadAll(resp2.Body)
+	resp2.Body.Close()
+	fmt.Printf("result2 is : %s\n", string(bs2))
+
+	fmt.Printf("%v\n\n", bytes.Compare(bs2, bs) == 0)
+
+}