diff --git a/codes.go b/codes.go
index c6ac18a..047a2c0 100644
--- a/codes.go
+++ b/codes.go
@@ -136,7 +136,7 @@ func (this *Codes) Code(byDatabase bool) ([]*CodeModel, error) {
 	}
 
 	//4. 插入或者更新数据库
-	err := this.SessionFunc(func(session *xorm.Session) error {
+	err := NewSessionFunc(this.db, func(session *xorm.Session) error {
 		for _, v := range insert {
 			if _, err := session.Insert(v); err != nil {
 				return err
@@ -157,8 +157,17 @@ func (this *Codes) Code(byDatabase bool) ([]*CodeModel, error) {
 
 }
 
-func (this *Codes) SessionFunc(fn func(session *xorm.Session) error) error {
-	session := this.db.NewSession()
+type CodeModel struct {
+	ID       int64  `json:"id"`                      //主键
+	Name     string `json:"name"`                    //名称,有时候名称会变,例STxxx
+	Code     string `json:"code" xorm:"index"`       //代码
+	Exchange string `json:"exchange" xorm:"index"`   //交易所
+	EditDate int64  `json:"editDate" xorm:"updated"` //修改时间
+	InDate   int64  `json:"inDate" xorm:"created"`   //创建时间
+}
+
+func NewSessionFunc(db *xorm.Engine, fn func(session *xorm.Session) error) error {
+	session := db.NewSession()
 	defer session.Close()
 	if err := session.Begin(); err != nil {
 		session.Rollback()
@@ -174,12 +183,3 @@ func (this *Codes) SessionFunc(fn func(session *xorm.Session) error) error {
 	}
 	return nil
 }
-
-type CodeModel struct {
-	ID       int64  `json:"id"`                      //主键
-	Name     string `json:"name"`                    //名称,有时候名称会变,例STxxx
-	Code     string `json:"code" xorm:"index"`       //代码
-	Exchange string `json:"exchange" xorm:"index"`   //交易所
-	EditDate int64  `json:"editDate" xorm:"updated"` //修改时间
-	InDate   int64  `json:"inDate" xorm:"created"`   //创建时间
-}
diff --git a/workday.go b/workday.go
index a4d7ccb..b75ee1f 100644
--- a/workday.go
+++ b/workday.go
@@ -81,7 +81,7 @@ func (this *Workday) Update() error {
 			return err
 		}
 
-		this.SessionFunc(func(session *xorm.Session) error {
+		return NewSessionFunc(this.db, func(session *xorm.Session) error {
 			for _, v := range resp.List {
 				if unix := v.Time.Unix(); unix > lastWorkday.Unix {
 					_, err = session.Insert(&WorkdayModel{Unix: unix, Date: v.Time.Format("20060102"), Is: true})
@@ -108,24 +108,6 @@ func (this *Workday) TodayIs() bool {
 	return this.Is(time.Now())
 }
 
-func (this *Workday) SessionFunc(fn func(session *xorm.Session) error) error {
-	session := this.db.NewSession()
-	defer session.Close()
-	if err := session.Begin(); err != nil {
-		session.Rollback()
-		return err
-	}
-	if err := fn(session); err != nil {
-		session.Rollback()
-		return err
-	}
-	if err := session.Commit(); err != nil {
-		session.Rollback()
-		return err
-	}
-	return nil
-}
-
 // WorkdayModel 工作日
 type WorkdayModel struct {
 	ID   int64  `json:"id"`   //主键