diff --git a/common/url.go b/common/url.go
index 4afec932d9539255cf5ec7a570bb5726577e2dbb..a6223d547c6a990e4452068153a956452e126c13 100644
--- a/common/url.go
+++ b/common/url.go
@@ -193,18 +193,6 @@ func NewURL(ctx context.Context, urlString string, opts ...option) (URL, error)
 			return s, perrors.Errorf("net.SplitHostPort(Url.Host{%s}), error{%v}", s.Location, err)
 		}
 	}
-	//
-	//timeoutStr := s.Params.Get("timeout")
-	//if len(timeoutStr) == 0 {
-	//	timeoutStr = s.Params.Get("default.timeout")
-	//}
-	//if len(timeoutStr) != 0 {
-	//	timeout, err := strconv.Atoi(timeoutStr)
-	//	if err == nil && timeout != 0 {
-	//		s.Timeout = time.Duration(timeout * 1e6) // timeout unit is millisecond
-	//	}
-	//}
-	//fmt.Println(s.String())
 	for _, opt := range opts {
 		opt(&s)
 	}
diff --git a/config/provider_config.go b/config/provider_config.go
index b2f44ea00a7cfdff2763e49fa3b3fa9a14135b1c..fc7a4d50d2ede6c3a64dade9c90914e3b5d51779 100644
--- a/config/provider_config.go
+++ b/config/provider_config.go
@@ -18,7 +18,6 @@ package config
 
 import (
 	"context"
-	"github.com/apache/dubbo-go/common/constant"
 	"io/ioutil"
 	"path"
 )
@@ -27,7 +26,9 @@ import (
 	perrors "github.com/pkg/errors"
 	"gopkg.in/yaml.v2"
 )
+
 import (
+	"github.com/apache/dubbo-go/common/constant"
 	"github.com/apache/dubbo-go/common/logger"
 )
 
diff --git a/config_center/zookeeper/impl_test.go b/config_center/zookeeper/impl_test.go
index 2ef66ae84c79c5d69aeeffce703dccece084e65c..26b899e82d7f1878d13e7dab113524be09ebde34 100644
--- a/config_center/zookeeper/impl_test.go
+++ b/config_center/zookeeper/impl_test.go
@@ -22,10 +22,12 @@ import (
 	"sync"
 	"testing"
 )
+
 import (
 	"github.com/samuel/go-zookeeper/zk"
 	"github.com/stretchr/testify/assert"
 )
+
 import (
 	"github.com/apache/dubbo-go/common"
 	"github.com/apache/dubbo-go/config_center"