diff --git a/.example/os/gres/gres_example.go b/.example/os/gres/gres_example.go
index 767583927..c2d62108c 100644
--- a/.example/os/gres/gres_example.go
+++ b/.example/os/gres/gres_example.go
@@ -1,9 +1,10 @@
 package main
 
 import (
+	_ "github.com/gogf/gf/os/gres/testdata/example/boot"
+
 	"github.com/gogf/gf/frame/g"
 	"github.com/gogf/gf/net/ghttp"
-	_ "github.com/gogf/gf/os/gres/testdata/example/boot"
 )
 
 func main() {
diff --git a/database/gdb/gdb_unit_z_mysql_model_test.go b/database/gdb/gdb_unit_z_mysql_model_test.go
index eb8a9c5e5..3aaad0ad1 100644
--- a/database/gdb/gdb_unit_z_mysql_model_test.go
+++ b/database/gdb/gdb_unit_z_mysql_model_test.go
@@ -1263,6 +1263,18 @@ func Test_Model_Where_ISNULL_2(t *testing.T) {
 		t.Assert(result[0]["id"].Int(), 1)
 	})
 }
+
+func Test_Model_Where_GTime(t *testing.T) {
+	table := createInitTable()
+	defer dropTable(table)
+
+	gtest.C(t, func(t *gtest.T) {
+		result, err := db.Table(table).Where("create_time>?", gtime.NewFromStr("2010-09-01")).All()
+		t.Assert(err, nil)
+		t.Assert(len(result), 10)
+	})
+}
+
 func Test_Model_WherePri(t *testing.T) {
 	table := createInitTable()
 	defer dropTable(table)
diff --git a/frame/g/g_object.go b/frame/g/g_object.go
index 3908ea43b..da846e2ef 100644
--- a/frame/g/g_object.go
+++ b/frame/g/g_object.go
@@ -20,6 +20,11 @@ import (
 	"github.com/gogf/gf/os/gview"
 )
 
+// Client is a convenience function, that creates and returns a new HTTP client.
+func Client() *ghttp.Client {
+	return ghttp.NewClient()
+}
+
 // Server returns an instance of http server with specified name.
 func Server(name ...interface{}) *ghttp.Server {
 	return gins.Server(name...)
diff --git a/net/ghttp/ghttp_client_config.go b/net/ghttp/ghttp_client_config.go
index 15bb47522..dc2978a57 100644
--- a/net/ghttp/ghttp_client_config.go
+++ b/net/ghttp/ghttp_client_config.go
@@ -36,7 +36,7 @@ func NewClient() *Client {
 	return &Client{
 		Client: http.Client{
 			Transport: &http.Transport{
-				// No validation for https certification of the server.
+				// No validation for https certification of the server in default.
 				TLSClientConfig: &tls.Config{
 					InsecureSkipVerify: true,
 				},
diff --git a/net/ghttp/ghttp_client_request.go b/net/ghttp/ghttp_client_request.go
index 40ff8b919..5689b4b3b 100644
--- a/net/ghttp/ghttp_client_request.go
+++ b/net/ghttp/ghttp_client_request.go
@@ -13,6 +13,7 @@ import (
 	"fmt"
 	"github.com/gogf/gf/encoding/gparser"
 	"github.com/gogf/gf/text/gregex"
+	"github.com/gogf/gf/text/gstr"
 	"github.com/gogf/gf/util/gconv"
 	"io"
 	"mime/multipart"
@@ -88,7 +89,7 @@ func (c *Client) Trace(url string, data ...interface{}) (*ClientResponse, error)
 func (c *Client) DoRequest(method, url string, data ...interface{}) (resp *ClientResponse, err error) {
 	method = strings.ToUpper(method)
 	if len(c.prefix) > 0 {
-		url = c.prefix + url
+		url = c.prefix + gstr.Trim(url)
 	}
 	param := ""
 	if len(data) > 0 {