diff --git a/os/gsession/gsession_z_example_test.go b/os/gsession/gsession_z_example_test.go
new file mode 100644
index 000000000..469da26a4
--- /dev/null
+++ b/os/gsession/gsession_z_example_test.go
@@ -0,0 +1,265 @@
+package gsession_test
+
+import (
+	"fmt"
+	"github.com/gogf/gf/v2/database/gredis"
+	"github.com/gogf/gf/v2/os/gctx"
+	"github.com/gogf/gf/v2/os/gsession"
+	"time"
+)
+
+func ExampleNew() {
+	manager := gsession.New(time.Second)
+	fmt.Println(manager.TTL())
+
+	// Output:
+	// 1s
+}
+
+func ExampleManager_SetStorage() {
+	manager := gsession.New(time.Second)
+	manager.SetStorage(gsession.NewStorageMemory())
+	fmt.Println(manager.TTL())
+
+	// Output:
+	// 1s
+}
+
+func ExampleManager_GetStorage() {
+	manager := gsession.New(time.Second, gsession.NewStorageMemory())
+	size, _ := manager.GetStorage().GetSize(gctx.New(), "id")
+	fmt.Println(size)
+
+	// Output:
+	// -1
+}
+
+func ExampleManager_SetTTL() {
+	manager := gsession.New(time.Second)
+	manager.SetTTL(time.Minute)
+	fmt.Println(manager.TTL())
+
+	// Output:
+	// 1m0s
+}
+
+func ExampleSession_Set() {
+	manager := gsession.New(time.Second, gsession.NewStorageFile())
+	s := manager.New(gctx.New())
+	fmt.Println(s.Set("key", "val") == nil)
+
+	// Output:
+	// true
+}
+
+func ExampleSession_SetMap() {
+	manager := gsession.New(time.Second, gsession.NewStorageFile())
+	s := manager.New(gctx.New())
+	fmt.Println(s.SetMap(map[string]interface{}{}) == nil)
+
+	// Output:
+	// true
+}
+
+func ExampleSession_Remove() {
+	manager := gsession.New(time.Second, gsession.NewStorageFile())
+	s1 := manager.New(gctx.New())
+	fmt.Println(s1.Remove("key"))
+
+	s2 := manager.New(gctx.New(), "Remove")
+	fmt.Println(s2.Remove("key"))
+
+	// Output:
+	// <nil>
+	// <nil>
+}
+
+func ExampleSession_RemoveAll() {
+	manager := gsession.New(time.Second, gsession.NewStorageFile())
+	s1 := manager.New(gctx.New())
+	fmt.Println(s1.RemoveAll())
+
+	s2 := manager.New(gctx.New(), "Remove")
+	fmt.Println(s2.RemoveAll())
+
+	// Output:
+	// <nil>
+	// <nil>
+}
+
+func ExampleSession_Id() {
+	manager := gsession.New(time.Second, gsession.NewStorageFile())
+	s := manager.New(gctx.New(), "Id")
+	id, _ := s.Id()
+	fmt.Println(id)
+
+	// Output:
+	// Id
+}
+
+func ExampleSession_SetId() {
+	nilSession := &gsession.Session{}
+	fmt.Println(nilSession.SetId("id"))
+
+	manager := gsession.New(time.Second, gsession.NewStorageFile())
+	s := manager.New(gctx.New())
+	s.Id()
+	fmt.Println(s.SetId("id"))
+
+	// Output:
+	// <nil>
+	// session already started
+}
+
+func ExampleSession_SetIdFunc() {
+	nilSession := &gsession.Session{}
+	fmt.Println(nilSession.SetIdFunc(func(ttl time.Duration) string {
+		return "id"
+	}))
+
+	manager := gsession.New(time.Second, gsession.NewStorageFile())
+	s := manager.New(gctx.New())
+	s.Id()
+	fmt.Println(s.SetIdFunc(func(ttl time.Duration) string {
+		return "id"
+	}))
+
+	// Output:
+	// <nil>
+	// session already started
+}
+
+func ExampleSession_Data() {
+	manager := gsession.New(time.Second, gsession.NewStorageFile())
+
+	s1 := manager.New(gctx.New())
+	data1, _ := s1.Data()
+	fmt.Println(data1)
+
+	s2 := manager.New(gctx.New(), "id_data")
+	data2, _ := s2.Data()
+	fmt.Println(data2)
+
+	// Output:
+	// map[]
+	// map[]
+}
+
+func ExampleSession_Size() {
+	manager := gsession.New(time.Second, gsession.NewStorageFile())
+
+	s1 := manager.New(gctx.New())
+	size1, _ := s1.Size()
+	fmt.Println(size1)
+
+	s2 := manager.New(gctx.New(), "Size")
+	size2, _ := s2.Size()
+	fmt.Println(size2)
+
+	// Output:
+	// 0
+	// 0
+}
+
+func ExampleSession_Contains() {
+	manager := gsession.New(time.Second, gsession.NewStorageFile())
+
+	s1 := manager.New(gctx.New())
+	notContains, _ := s1.Contains("Contains")
+	fmt.Println(notContains)
+
+	s2 := manager.New(gctx.New(), "Contains")
+	contains, _ := s2.Contains("Contains")
+	fmt.Println(contains)
+
+	// Output:
+	// false
+	// false
+}
+
+func ExampleStorageFile_SetCryptoKey() {
+	storage := gsession.NewStorageFile()
+	storage.SetCryptoKey([]byte("key"))
+
+	size, _ := storage.GetSize(gctx.New(), "id")
+	fmt.Println(size)
+
+	// Output:
+	// -1
+}
+
+func ExampleStorageFile_SetCryptoEnabled() {
+	storage := gsession.NewStorageFile()
+	storage.SetCryptoEnabled(true)
+
+	size, _ := storage.GetSize(gctx.New(), "id")
+	fmt.Println(size)
+
+	// Output:
+	// -1
+}
+
+func ExampleStorageFile_UpdateTTL() {
+	var (
+		ctx = gctx.New()
+	)
+	storage := gsession.NewStorageFile()
+	fmt.Println(storage.UpdateTTL(ctx, "id", time.Minute))
+
+	// Output:
+	// <nil>
+}
+
+func ExampleStorageRedis_Get() {
+	storage := gsession.NewStorageRedis(&gredis.Redis{})
+	val, _ := storage.Get(gctx.New(), "id", "key")
+	fmt.Println(val)
+
+	// Output:
+	// <nil>
+}
+
+func ExampleStorageRedis_Data() {
+	storage := gsession.NewStorageRedis(&gredis.Redis{})
+	val, _ := storage.Data(gctx.New(), "id")
+	fmt.Println(val)
+
+	// Output:
+	// map[]
+}
+
+func ExampleStorageRedis_GetSize() {
+	storage := gsession.NewStorageRedis(&gredis.Redis{})
+	val, _ := storage.GetSize(gctx.New(), "id")
+	fmt.Println(val)
+
+	// Output:
+	// -1
+}
+
+func ExampleStorageRedis_Remove() {
+	storage := gsession.NewStorageRedis(&gredis.Redis{})
+	err := storage.Remove(gctx.New(), "id", "key")
+	fmt.Println(err != nil)
+
+	// Output:
+	// true
+}
+
+func ExampleStorageRedis_RemoveAll() {
+	storage := gsession.NewStorageRedis(&gredis.Redis{})
+	err := storage.RemoveAll(gctx.New(), "id")
+	fmt.Println(err != nil)
+
+	// Output:
+	// true
+}
+
+func ExampleStorageRedis_UpdateTTL() {
+	storage := gsession.NewStorageRedis(&gredis.Redis{})
+	err := storage.UpdateTTL(gctx.New(), "id", time.Minute)
+	fmt.Println(err)
+
+	// Output:
+	// <nil>
+}
diff --git a/os/gsession/gsession_z_unit_storage_file_test.go b/os/gsession/gsession_z_unit_storage_file_test.go
index 3f2b75db0..75e68a810 100644
--- a/os/gsession/gsession_z_unit_storage_file_test.go
+++ b/os/gsession/gsession_z_unit_storage_file_test.go
@@ -25,9 +25,15 @@ func Test_StorageFile(t *testing.T) {
 		defer s.Close()
 		s.Set("k1", "v1")
 		s.Set("k2", "v2")
+		s.MustSet("k3", "v3")
+		s.MustSet("k4", "v4")
 		s.SetMap(g.Map{
-			"k3": "v3",
-			"k4": "v4",
+			"kmap1": "kval1",
+			"kmap2": "kval2",
+		})
+		s.MustSetMap(g.Map{
+			"kmap3": "kval3",
+			"kmap4": "kval4",
 		})
 		t.Assert(s.IsDirty(), true)
 		sessionId = s.MustId()
@@ -40,16 +46,17 @@ func Test_StorageFile(t *testing.T) {
 		t.Assert(s.MustGet("k2"), "v2")
 		t.Assert(s.MustGet("k3"), "v3")
 		t.Assert(s.MustGet("k4"), "v4")
-		t.Assert(len(s.MustData()), 4)
+		t.Assert(len(s.MustData()), 8)
 		t.Assert(s.MustData()["k1"], "v1")
 		t.Assert(s.MustData()["k4"], "v4")
 		t.Assert(s.MustId(), sessionId)
-		t.Assert(s.MustSize(), 4)
+		t.Assert(s.MustSize(), 8)
 		t.Assert(s.MustContains("k1"), true)
 		t.Assert(s.MustContains("k3"), true)
 		t.Assert(s.MustContains("k5"), false)
 		s.Remove("k4")
-		t.Assert(s.MustSize(), 3)
+		s.MustRemove("k4")
+		t.Assert(s.MustSize(), 7)
 		t.Assert(s.MustContains("k3"), true)
 		t.Assert(s.MustContains("k4"), false)
 		s.RemoveAll()