diff --git a/pkg/cloudprovider/objectstore.go b/pkg/cloudprovider/objectstore.go
index 395d69e80d..95f75a5547 100644
--- a/pkg/cloudprovider/objectstore.go
+++ b/pkg/cloudprovider/objectstore.go
@@ -228,6 +228,17 @@ func GetIObjects(bucket ICloudBucket, objectPrefix string, isRecursive bool) ([]
 	return ret, nil
 }
 
+func GetIObject(bucket ICloudBucket, objectPrefix string) (ICloudObject, error) {
+	objects, err := GetIObjects(bucket, objectPrefix, true)
+	if err != nil {
+		return nil, errors.Wrap(err, "GetIObjects")
+	}
+	if len(objects) > 0 && objects[0].GetKey() == objectPrefix {
+		return objects[0], nil
+	}
+	return nil, ErrNotFound
+}
+
 func Makedir(ctx context.Context, bucket ICloudBucket, key string) error {
 	segs := make([]string, 0)
 	for _, seg := range strings.Split(key, "/") {
diff --git a/pkg/compute/models/buckets.go b/pkg/compute/models/buckets.go
index d1362152f9..085c09ae56 100644
--- a/pkg/compute/models/buckets.go
+++ b/pkg/compute/models/buckets.go
@@ -763,14 +763,15 @@ func (bucket *SBucket) PerformAcl(
 			return nil, httperrors.NewInternalServerError("syncWithCloudBucket error %s", err)
 		}
 	} else {
-		objects, err := iBucket.GetIObjects(objKey, false)
+		object, err := cloudprovider.GetIObject(iBucket, objKey)
 		if err != nil {
-			return nil, httperrors.NewInternalServerError("iBucket.GetIObjects error %s", err)
+			if err == cloudprovider.ErrNotFound {
+				return nil, httperrors.NewResourceNotFoundError("object %s not found", objKey)
+			} else {
+				return nil, httperrors.NewInternalServerError("iBucket.GetIObjects error %s", err)
+			}
 		}
-		if len(objects) == 0 {
-			return nil, httperrors.NewResourceNotFoundError("object %s not found", objKey)
-		}
-		err = objects[0].SetAcl(cloudprovider.TBucketACLType(aclStr))
+		err = object.SetAcl(cloudprovider.TBucketACLType(aclStr))
 		if err != nil {
 			return nil, httperrors.NewInternalServerError("setAcl error %s", err)
 		}
@@ -841,14 +842,15 @@ func (bucket *SBucket) GetDetailsAcl(
 	if len(objKey) == 0 {
 		acl = iBucket.GetAcl()
 	} else {
-		objects, err := iBucket.GetIObjects(objKey, true)
+		object, err := cloudprovider.GetIObject(iBucket, objKey)
 		if err != nil {
-			return nil, httperrors.NewInternalServerError("iBucket.GetIObjects error %s", err)
+			if err == cloudprovider.ErrNotFound {
+				return nil, httperrors.NewNotFoundError("object %s not found", objKey)
+			} else {
+				return nil, httperrors.NewInternalServerError("iBucket.GetIObjects error %s", err)
+			}
 		}
-		if len(objects) == 0 {
-			return nil, httperrors.NewNotFoundError("object %s not found", objKey)
-		}
-		acl = objects[0].GetAcl()
+		acl = object.GetAcl()
 	}
 	ret := jsonutils.NewDict()
 	ret.Add(jsonutils.NewString(string(acl)), "acl")
diff --git a/pkg/multicloud/aws/bucket.go b/pkg/multicloud/aws/bucket.go
index 35cd8b91ec..4c93bcb26d 100644
--- a/pkg/multicloud/aws/bucket.go
+++ b/pkg/multicloud/aws/bucket.go
@@ -277,5 +277,9 @@ func (b *SBucket) GetTempUrl(method string, key string, expire time.Duration) (s
 	default:
 		return "", errors.Error("unsupported method")
 	}
-	return request.Presign(expire)
+	url, _, err := request.PresignRequest(expire)
+	if err != nil {
+		return "", errors.Wrap(err, "request.PresignRequest")
+	}
+	return url, nil
 }
diff --git a/pkg/multicloud/objectstore/shell.go b/pkg/multicloud/objectstore/shell.go
index aacb43d660..01b29d62bb 100644
--- a/pkg/multicloud/objectstore/shell.go
+++ b/pkg/multicloud/objectstore/shell.go
@@ -229,14 +229,11 @@ func S3Shell() {
 		if err != nil {
 			return err
 		}
-		objects, err := bucket.GetIObjects(args.KEY, false)
+		object, err := cloudprovider.GetIObject(bucket, args.KEY)
 		if err != nil {
 			return err
 		}
-		if len(objects) == 0 {
-			return cloudprovider.ErrNotFound
-		}
-		fmt.Println(objects[0].GetAcl())
+		fmt.Println(object.GetAcl())
 		return nil
 	})
 
@@ -250,14 +247,11 @@ func S3Shell() {
 		if err != nil {
 			return err
 		}
-		objects, err := bucket.GetIObjects(args.KEY, false)
+		object, err := cloudprovider.GetIObject(bucket, args.KEY)
 		if err != nil {
 			return err
 		}
-		if len(objects) == 0 {
-			return cloudprovider.ErrNotFound
-		}
-		err = objects[0].SetAcl(cloudprovider.TBucketACLType(args.ACL))
+		err = object.SetAcl(cloudprovider.TBucketACLType(args.ACL))
 		if err != nil {
 			return err
 		}
diff --git a/pkg/multicloud/qcloud/bucket.go b/pkg/multicloud/qcloud/bucket.go
index 0b7a47a71d..58bcaaa952 100644
--- a/pkg/multicloud/qcloud/bucket.go
+++ b/pkg/multicloud/qcloud/bucket.go
@@ -256,8 +256,8 @@ func (b *SBucket) GetTempUrl(method string, key string, expire time.Duration) (s
 		return "", errors.Wrap(err, "GetCosClient")
 	}
 	url, err := coscli.Object.GetPresignedURL(context.Background(), method, key,
-		b.region.client.SecretKey,
 		b.region.client.SecretID,
+		b.region.client.SecretKey,
 		expire, nil)
 	if err != nil {
 		return "", errors.Wrap(err, "coscli.Object.GetPresignedURL")