diff --git a/common/database/conn.go b/common/database/conn.go
index 1a57a29acfcd22741fd82782c1f9a493169ddf80..1847d991056f52b5c9bf070573d399f3873575b8 100644
--- a/common/database/conn.go
+++ b/common/database/conn.go
@@ -18,10 +18,8 @@ var (
 )
 
 //InitConnection 初始化数据库连接
-func InitConnection(config Config) error {
-	db, e := getConnection(config)
-	defaultDB = db
-	return e
+func InitConnection(config Config) (*sql.DB, error) {
+	return getConnection(config)
 }
 func getConnection(config Config) (*sql.DB, error) {
 
diff --git a/common/database/database.go b/common/database/database.go
index 2cb4da111131060d810b13f6654619dffa522d41..05ff3680d11233dcc3e0acaa67dbb89bb329fe8a 100644
--- a/common/database/database.go
+++ b/common/database/database.go
@@ -1,5 +1,10 @@
 package database
-
+const (
+	//MysqlDriver mysql驱动器
+	MysqlDriver = "mysql"
+	//Sqlite3Driver Sqlite3Driver驱动
+	Sqlite3Driver = "sqlite3"
+)
 //Config 数据库配置结构体
 type Config interface {
 	GetDriver() string
diff --git a/common/listener/intercept.go b/common/listener/intercept.go
new file mode 100644
index 0000000000000000000000000000000000000000..dbf5f5093cc994d35816fc6a8947116e999f8f16
--- /dev/null
+++ b/common/listener/intercept.go
@@ -0,0 +1,43 @@
+package listener
+
+import "sync"
+
+//InterceptFunc 拦截函数
+type InterceptFunc func(event interface{}) error
+
+//Intercept 拦截器
+type Intercept struct {
+	callbacks []InterceptFunc
+	locker    sync.RWMutex
+}
+
+//NewIntercept 创建拦截器
+func NewIntercept() *Intercept {
+	return &Intercept{
+		callbacks: nil,
+		locker:    sync.RWMutex{},
+	}
+}
+
+//Add add
+func (i *Intercept) Add(f func(v interface{}) error) {
+	i.locker.Lock()
+	i.callbacks = append(i.callbacks, InterceptFunc(f))
+	i.locker.Unlock()
+}
+
+//Call call
+func (i *Intercept) Call(v interface{}) error {
+	i.locker.RLock()
+	fs := i.callbacks
+	i.locker.RUnlock()
+
+	for _, f := range fs {
+		err := f(v)
+		if err != nil {
+
+			return err
+		}
+	}
+	return nil
+}
diff --git a/common/pdao/demo/demo.go b/common/pdao/demo/demo.go
new file mode 100644
index 0000000000000000000000000000000000000000..6f9cc409ee1ca8551f94429842e228d579d289d6
--- /dev/null
+++ b/common/pdao/demo/demo.go
@@ -0,0 +1,62 @@
+package main
+
+import (
+	"fmt"
+	"github.com/eolinker/goku-api-gateway/common/pdao"
+)
+
+type DemoGetDao interface {
+	GetNameById(id int) string
+	GetIdByName(name string) int
+}
+type DemoSetDao interface {
+	Set(id int,name string) 
+	 
+}
+
+type Demo struct {
+	names map[string]int
+	ids map[int]string
+}
+
+func NewDemo() *Demo {
+	return &Demo{
+		names: make(map[string]int),
+		ids:   make(map[int]string),
+	}}
+
+func (d *Demo) Set(id int, name string) {
+	 d.names[name]=id
+	 d.ids[id]=name
+}
+
+func (d *Demo) GetNameById(id int) string {
+	return d.ids[id]
+}
+
+func (d *Demo) GetIdByName(name string) int {
+	  return d.names[name]
+}
+var (
+	getDao DemoGetDao
+	setDao DemoSetDao
+)
+
+func init() {
+	pdao.Need(&getDao)
+	pdao.Need(&setDao)
+}
+func main() {
+
+	demo:=NewDemo()
+	var seter DemoSetDao = demo
+	pdao.Set(&seter)
+	var getter DemoGetDao = demo
+	pdao.Set(&getter)
+
+	pdao.Check()
+
+	setDao.Set(1,"test")
+	fmt.Println(getDao.GetNameById(1))
+	fmt.Println(getDao.GetIdByName("test"))
+}
\ No newline at end of file
diff --git a/common/pdao/factory.go b/common/pdao/factory.go
new file mode 100644
index 0000000000000000000000000000000000000000..5b0ad7962b257f08d2d6da9f022860867a3fa353
--- /dev/null
+++ b/common/pdao/factory.go
@@ -0,0 +1,21 @@
+package pdao
+
+import "database/sql"
+
+//FactoryFunc factoryFunc
+type FactoryFunc func(db *sql.DB) (interface{}, error)
+
+//Create create
+func (f FactoryFunc) Create(db *sql.DB) (interface{}, error) {
+	return f(db)
+}
+
+//Factory factory
+type Factory interface {
+	Create(db *sql.DB) (interface{}, error)
+}
+
+//DBBuilder dbBuilder
+type DBBuilder interface {
+	Build(db *sql.DB) error
+}
diff --git a/common/pdao/needs.go b/common/pdao/needs.go
new file mode 100644
index 0000000000000000000000000000000000000000..d84f7df222a09541259b7c26d637d83d8d4cb4c7
--- /dev/null
+++ b/common/pdao/needs.go
@@ -0,0 +1,93 @@
+package pdao
+
+import (
+	"fmt"
+	"reflect"
+	"sync"
+)
+
+//NeedsManager needsManager
+type NeedsManager struct {
+	daoInterfaces map[string][]*reflect.Value
+	lock          sync.Mutex
+}
+
+//NewNeedsManager 创建新的needsManager
+func NewNeedsManager() *NeedsManager {
+	return &NeedsManager{
+		daoInterfaces: make(map[string][]*reflect.Value),
+		lock:          sync.Mutex{},
+	}
+}
+
+func (m *NeedsManager) add(key string, v *reflect.Value) {
+	m.lock.Lock()
+	m.daoInterfaces[key] = append(m.daoInterfaces[key], v)
+	m.lock.Unlock()
+}
+
+func (m *NeedsManager) set(key string, v reflect.Value) {
+	m.lock.Lock()
+	for _, e := range m.daoInterfaces[key] {
+		e.Set(v)
+	}
+	delete(m.daoInterfaces, key)
+	m.lock.Unlock()
+}
+func (m *NeedsManager) check() []string {
+	m.lock.Lock()
+	r := make([]string, 0, len(m.daoInterfaces))
+	for pkg := range m.daoInterfaces {
+
+		r = append(r, pkg)
+	}
+	m.lock.Unlock()
+	return r
+}
+
+//Need 声明
+func (m *NeedsManager) Need(p interface{}) {
+
+	v := reflect.ValueOf(p)
+
+	if v.Kind() != reflect.Ptr {
+		panic("must ptr")
+	}
+	e := v.Elem()
+	pkg := key(e.Type())
+	if pkg == "" {
+		panic("invalid interface")
+	}
+
+	if !e.CanSet() {
+		panic("invalid interface")
+	}
+	m.add(pkg, &e)
+}
+
+//Set 注入
+func (m *NeedsManager) Set(i interface{}) {
+	v := reflect.ValueOf(i)
+	if v.Kind() != reflect.Ptr {
+		panic("must ptr")
+	}
+	e := v.Elem()
+	pkg := key(e.Type())
+
+	if pkg == "" {
+		panic("invalid interface")
+	}
+	m.set(pkg, e)
+}
+func key(t reflect.Type) string {
+	return fmt.Sprintf("%s.%s", t.PkgPath(), t.String())
+}
+
+//Check 检查是否实现相关dao类
+func (m *NeedsManager) Check() error {
+	rs := m.check()
+	if len(rs) > 0 {
+		return fmt.Errorf("need:%v", rs)
+	}
+	return nil
+}
diff --git a/common/pdao/needs_test.go b/common/pdao/needs_test.go
new file mode 100644
index 0000000000000000000000000000000000000000..1388a2dc912b500707751636347164822f77ac2b
--- /dev/null
+++ b/common/pdao/needs_test.go
@@ -0,0 +1,66 @@
+package pdao
+
+import (
+	"fmt"
+	"testing"
+
+	test1 "github.com/eolinker/goku-api-gateway/common/pdao/test/test/test/test"
+)
+
+type T1 struct {
+}
+
+func (t *T1) Test4() {
+	fmt.Println("implement me")
+}
+
+type T2 struct {
+}
+
+func (t *T2) Test3() {
+	fmt.Println("implement me")
+}
+
+type T3 struct {
+}
+
+func (t *T3) Test2() {
+
+	fmt.Println("implement me")
+}
+
+type T4 struct {
+}
+
+func (t *T4) Test1() {
+	fmt.Println("implement me")
+}
+
+func Test(t *testing.T) {
+
+	t.Run("all", func(t *testing.T) {
+		var t1 test1.Test
+		//var t2 test2.Test = nil
+		//var t3 test3.Test  = nil
+		//var t4 test4.Test = nil
+		Need(&t1)
+		//Need(&t2)
+		//Need(&t3)
+		//Need(&t4)
+
+		var t1v test1.Test = new(T4)
+		Set(&t1v)
+		//Set(test2.Test(new(T3)))
+		//
+		//Set(test3.Test(new(T2)))
+		//Set(test4.Test(new(T1)))
+
+		t1.Test1()
+		//t2.Test2()
+		//t3.Test3()
+		//t4.Test4()
+		Check()
+
+	})
+
+}
diff --git a/common/pdao/pdao.go b/common/pdao/pdao.go
new file mode 100644
index 0000000000000000000000000000000000000000..b8aa7a35a5afed58f403b6e20d2227f7c0aa8116
--- /dev/null
+++ b/common/pdao/pdao.go
@@ -0,0 +1,116 @@
+package pdao
+
+import (
+	"database/sql"
+	"sync"
+)
+
+var (
+	needsManager  = NewNeedsManager()
+	factoryManage = NewFactoryManager()
+)
+
+//Need need
+func Need(is ...interface{}) {
+	for _, i := range is {
+		needsManager.Need(i)
+	}
+}
+
+//Check check
+func Check() error {
+	return needsManager.Check()
+}
+
+//RegisterDao 注册dao类
+func RegisterDao(driver string, factories ...Factory) {
+	for _, factory := range factories {
+		factoryManage.RegisterDao(driver, factory)
+	}
+
+}
+
+//RegisterDBBuilder 注册dbBuilder
+func RegisterDBBuilder(driver string, builders ...DBBuilder) {
+	for _, builder := range builders {
+		factoryManage.RegisterDBBuilder(driver, builder)
+
+	}
+}
+
+//Build build
+func Build(driver string, db *sql.DB) error {
+	return factoryManage.Build(driver, db, needsManager)
+}
+
+//FactoryManager 工厂管理者
+type FactoryManager struct {
+	factories map[string][]Factory
+	builders  map[string][]DBBuilder
+	locker    sync.Mutex
+}
+
+//NewFactoryManager new工厂管理者
+func NewFactoryManager() *FactoryManager {
+	return &FactoryManager{
+		factories: make(map[string][]Factory),
+		builders:  make(map[string][]DBBuilder),
+		locker:    sync.Mutex{},
+	}
+}
+
+//RegisterDBBuilder dbBuilder注册器
+func (f *FactoryManager) RegisterDBBuilder(driver string, builder DBBuilder) {
+	f.locker.Lock()
+	f.builders[driver] = append(f.builders[driver], builder)
+	f.locker.Unlock()
+}
+
+//RegisterDao dao类注册器
+func (f *FactoryManager) RegisterDao(driver string, factory Factory) {
+	f.locker.Lock()
+	f.factories[driver] = append(f.factories[driver], factory)
+	f.locker.Unlock()
+}
+
+func (f *FactoryManager) get(driver string) []Factory {
+	f.locker.Lock()
+	fs := f.factories[driver]
+	delete(f.factories, driver)
+	f.locker.Unlock()
+	return fs
+}
+
+func (f *FactoryManager) callBuild(driver string, db *sql.DB) error {
+	f.locker.Lock()
+
+	bs := f.builders[driver]
+	for _, b := range bs {
+		err := b.Build(db)
+		if err != nil {
+			f.locker.Unlock()
+			return err
+		}
+	}
+	f.locker.Unlock()
+	return nil
+}
+
+//Build build
+func (f *FactoryManager) Build(driver string, db *sql.DB, m *NeedsManager) error {
+	err := f.callBuild(driver, db)
+	if err != nil {
+		return err
+	}
+	fs := f.get(driver)
+	for _, factory := range fs {
+
+		i, err := factory.Create(db)
+		if err != nil {
+			return err
+		}
+		m.Set(i)
+	}
+	return nil
+
+}
diff --git a/common/pdao/test/t.go b/common/pdao/test/t.go
new file mode 100644
index 0000000000000000000000000000000000000000..532bcfaf6a304ce72470312a3c76ad483896f569
--- /dev/null
+++ b/common/pdao/test/t.go
@@ -0,0 +1,6 @@
+package test
+
+
+type Test interface {
+	Test4()
+}
\ No newline at end of file
diff --git a/common/pdao/test/test/t.go b/common/pdao/test/test/t.go
new file mode 100644
index 0000000000000000000000000000000000000000..2aa08133485c6db31f4e6c0fe6285df6a3a09ce6
--- /dev/null
+++ b/common/pdao/test/test/t.go
@@ -0,0 +1,6 @@
+package test
+
+
+type Test interface {
+	Test3()
+}
\ No newline at end of file
diff --git a/common/pdao/test/test/test/t.go b/common/pdao/test/test/test/t.go
new file mode 100644
index 0000000000000000000000000000000000000000..6508d58eee17b2bdbc25e9c1a457ece2b8a18805
--- /dev/null
+++ b/common/pdao/test/test/test/t.go
@@ -0,0 +1,6 @@
+package test
+
+
+type Test interface {
+	Test2()
+}
\ No newline at end of file
diff --git a/common/pdao/test/test/test/test/t.go b/common/pdao/test/test/test/test/t.go
new file mode 100644
index 0000000000000000000000000000000000000000..036cbee6213da3e1e2a426b982becc549e37e1a0
--- /dev/null
+++ b/common/pdao/test/test/test/test/t.go
@@ -0,0 +1,6 @@
+package test
+
+
+type Test interface {
+	Test1()
+}
\ No newline at end of file