diff --git a/README.md b/README.md
index 4c49270..264738f 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@
 `go get`
 
 ```shell
-go get github.com/eatMoreApple/openwechat
+go get github.com/eatmoreapple/openwechat
 ```
 
 
@@ -36,7 +36,7 @@ package main
 
 import (
 	"fmt"
-	"github.com/eatMoreApple/openwechat"
+	"github.com/eatmoreapple/openwechat"
 )
 
 func main() {
@@ -95,7 +95,7 @@ func main() {
 
 ### 项目主页
 
-[https://github.com/eatMoreApple/openwechat](https://github.com/eatMoreApple/openwechat)
+[https://github.com/eatmoreapple/openwechat](https://github.com/eatmoreapple/openwechat)
 
 
 
diff --git a/bot.go b/bot.go
index 0ca0255..ec3f0c2 100644
--- a/bot.go
+++ b/bot.go
@@ -74,10 +74,8 @@ func (b *Bot) HotLogin(storage HotReloadStorage, retry ...bool) error {
 	// 如果webInit出错,则说明可能身份信息已经失效
 	// 如果retry为True的话,则进行正常登陆
 	if err = b.webInit(); err != nil {
-		if len(retry) > 0 {
-			if retry[0] {
-				return b.Login()
-			}
+		if len(retry) > 0 && retry[0] {
+			return b.Login()
 		}
 	}
 	return err
@@ -176,7 +174,7 @@ func (b *Bot) handleLogin(data []byte) error {
 
 	// 如果是热登陆,则将当前的重要信息写入hotReloadStorage
 	if b.isHot {
-		if err := b.DumpHotReloadStorage(); err != nil {
+		if err = b.DumpHotReloadStorage(); err != nil {
 			return err
 		}
 	}
@@ -207,7 +205,7 @@ func (b *Bot) webInit() error {
 		if b.GetMessageErrorHandler == nil {
 			b.GetMessageErrorHandler = b.stopAsyncCALL
 		}
-		if err := b.asyncCall(); err != nil {
+		if err = b.asyncCall(); err != nil {
 			b.GetMessageErrorHandler(err)
 		}
 	}()
@@ -308,6 +306,21 @@ func (b *Bot) DumpHotReloadStorage() error {
 	return b.hotReloadStorage.Dump(item)
 }
 
+// OnLogin is a setter for LoginCallBack
+func (b *Bot) OnLogin(f func(body []byte)) {
+	b.LoginCallBack = f
+}
+
+// OnScanned is a setter for ScanCallBack
+func (b *Bot) OnScanned(f func(body []byte)) {
+	b.ScanCallBack = f
+}
+
+// OnLogout is a setter for LogoutCallBack
+func (b *Bot) OnLogout(f func(bot *Bot)) {
+	b.LogoutCallBack = f
+}
+
 // Bot的构造方法，需要自己传入Caller
 func NewBot(caller *Caller) *Bot {
 	ctx, cancel := context.WithCancel(context.Background())
diff --git a/go.mod b/go.mod
index 1b56828..6031327 100644
--- a/go.mod
+++ b/go.mod
@@ -1,4 +1,4 @@
-module github.com/eatMoreApple/openwechat
+module github.com/eatmoreapple/openwechat
 
 go 1.15