diff --git a/.example/net/ghttp/server/router/duplicated/duplicated.go b/.example/net/ghttp/server/router/duplicated/duplicated.go
new file mode 100644
index 00000000000..9402a2a4d2e
--- /dev/null
+++ b/.example/net/ghttp/server/router/duplicated/duplicated.go
@@ -0,0 +1,20 @@
+package main
+
+import (
+	"github.com/gogf/gf/frame/g"
+	"github.com/gogf/gf/net/ghttp"
+)
+
+func main() {
+	s := g.Server()
+	s.Group("/", func(group *ghttp.RouterGroup) {
+		group.ALL("/test", func(r *ghttp.Request) {
+			r.Response.Writeln(1)
+		})
+		group.ALL("/test", func(r *ghttp.Request) {
+			r.Response.Writeln(2)
+		})
+	})
+	s.SetPort(8199)
+	s.Run()
+}
diff --git a/os/gtime/gtime_format.go b/os/gtime/gtime_format.go
index e1681cc6072..9b87c12b559 100644
--- a/os/gtime/gtime_format.go
+++ b/os/gtime/gtime_format.go
@@ -259,6 +259,7 @@ func formatToRegexPattern(format string) string {
 	s := gregex.Quote(formatToStdLayout(format))
 	s, _ = gregex.ReplaceString(`[0-9]`, `[0-9]`, s)
 	s, _ = gregex.ReplaceString(`[A-Za-z]`, `[A-Za-z]`, s)
+	s, _ = gregex.ReplaceString(`\s+`, `\s+`, s)
 	return s
 }
 
diff --git a/os/gtime/gtime_z_unit_basic_test.go b/os/gtime/gtime_z_unit_basic_test.go
index c4e8b2c26d3..34ef936425c 100644
--- a/os/gtime/gtime_z_unit_basic_test.go
+++ b/os/gtime/gtime_z_unit_basic_test.go
@@ -275,6 +275,11 @@ func Test_ParseTimeFromContent(t *testing.T) {
 			t.Error("test fail")
 		}
 	})
+
+	gtest.C(t, func(t *gtest.T) {
+		timeStr := "2021-1-27 9:10:24"
+		t.Assert(gtime.ParseTimeFromContent(timeStr, "Y-n-d g:i:s").String(), "2021-01-27 09:10:24")
+	})
 }
 
 func Test_FuncCost(t *testing.T) {