diff --git a/encrypt_test.go b/encrypt_test.go
new file mode 100644
index 0000000..5f74771
--- /dev/null
+++ b/encrypt_test.go
@@ -0,0 +1,50 @@
+package main
+
+import "testing"
+
+func setupConfig() {
+	APIConfig = WechatAPIConfig{
+		"skdq8vklaurfqemfszuif",
+		"cmtWK2teRnLOXyO5dw7lJkETv9jCeNAqYyguEu5D8gG",
+		"wx876e233fde456b7b",
+		"4a91aa328569b10a9fb97adeb8b0af58"}
+}
+func TestEncodingMesage(t *testing.T) {
+	setupConfig()
+
+	//明文：
+	var msg = `<xml><ToUserName><![CDATA[gh_f09231355c68]]></ToUserName>
+<FromUserName><![CDATA[oUN420bxqFqlx0ZQHciUOesZO3PE]]></FromUserName>
+<CreateTime>1492972518</CreateTime>
+<MsgType><![CDATA[event]]></MsgType>
+<Event><![CDATA[CLICK]]></Event>
+<EventKey><![CDATA[V1001_TODAY_MUSIC]]></EventKey>
+</xml>`
+
+	e := Encode(msg)
+	t.Log(e)
+	d := Decode(e)
+
+	if d != msg {
+		t.Error("encode a message then decode it failed")
+	}
+
+	//预先加密和的密文，和msg相同
+	var encrypted1 = "P2DoRtilYwJ1aM+VW1sGs6p11Rhcd/TrFYtvsw53SUVw2Knh27hF5IZUBxRXbz+k87zy983ec5aOwgS+WxYoejmGubaqiYy2yfCBNyGRlWfe+iWc2TnvPIEAJebSWuNOJ7FoITeMndr4tW391XxDdMom8I/VsqKnsZZAangUsxmA1ZEnP/d4Lx8/xt3qJKrJMa4Q8s9VsOOvzLIGhL1IN5bHaXN+CwgBTAUCrHD8AneiX5MLSv/74qozg+jKBSUebZrjRYuTymQ3TBh3pQXyRBQTZNrCAe1tlcNli9e5MSUMsHFIzGw/kiu93/5VkxCYRLgRDQKl9oam4+Rpxywir7EiT7I4X343l9ogcMLWX16evkLlQHoqBhLl6ZcfW7Nmq8/Ghy8jbuwqkR/0jLJ/avtjzgJOwaxdBUz4nYZ452rLJekxIvsmV6PZgCXRrKHzmpZX+i6hIRIWiIaDeMOEsw=="
+	//不同的密文： （相同的明文）
+	var encrypted2 = "yKlFGV+ukblgxH7PvN6jgCGGC8TkC6J9C0F1XnvcLQKS9R5RSJYib4EZZftpyfc5x6WDfM7++vunEawNz54Gu4746byRaqQyW9G6zX7o6ro5YDGbNuYpBflwi6bNM6hncIKYb8oH3VFHEvSsUb1eg4fNwdebeEhpixDlPPbwAUXOZ7FcN6UWkSiZhZMKZNSv42+u9GK/nFEv1Fa8nW4NWNLXU4V2OFM+5d0lAGb0I9pD69IsuUFeBuJ8ZOGPB4EVKI2xODpicJkYP3ym5ePpz3GC4EFk5JwIiPw+EYbqKH0ADNhrsRHtAzLh6rjyNWCVkij68XmWBJ8I8l38a/zycFZ4uvef7ceEByvhKIVM7p/eO55NOl/F6W6hmEQwOgw/7tPjrErA4aPuijPAjgtVw0ngb32O9/XRSe91h802oyhWwnoQgTF7tZqKLpJLxM9g+BiUar/13j0eivql0B6gWg=="
+
+	f := Decode(encrypted1)
+	g := Decode(encrypted2)
+
+	//t.Log(f)
+	//t.Log(g)
+	if f != g {
+		t.Error("decoding two different encryption to same message failed")
+	}
+
+	if f != msg {
+		t.Error("Decoding itself failed")
+	}
+
+}
diff --git a/inEvent.go b/inEvent.go
new file mode 100644
index 0000000..06ab7d0
--- /dev/null
+++ b/inEvent.go
@@ -0,0 +1 @@
+package main
diff --git a/inMsg.go b/inMsg.go
new file mode 100644
index 0000000..b9bc7b1
--- /dev/null
+++ b/inMsg.go
@@ -0,0 +1,60 @@
+//analyze xml message
+package main
+
+//all xml message has these headers
+type Header struct {
+	ToUserName   string
+	FromUserName string
+	CreatTime    int64
+	MsgType      string
+}
+
+//text message
+type TextMsg struct {
+	Content string
+	MsgId   int64
+}
+
+//picture
+type PicMsg struct {
+	PicUrl  string
+	MeidaId string
+	MsgId   int64
+}
+
+//voice
+type VoiceMsg struct {
+	MeidaId string
+	Format  string
+	MsgId   int64
+}
+
+//video
+type VideoMsg struct {
+	MediaId      string
+	ThumbMediaId string
+	MsgId        int64
+}
+
+//short video
+type ShortVideo struct {
+	MeidaId      string
+	ThumbMediaId string
+	MsgId        int64
+}
+
+//Location Info
+type Location struct {
+	Location_X float64
+	Location_Y float64
+	Scale      int
+	Label      string
+	MsgId      int64
+}
+
+type LinkMsg struct {
+	Title       string
+	Description string
+	Url         string
+	MsgId       int64
+}
diff --git a/messageEncrypt.go b/messageEncrypt.go
index b792969..96892a3 100644
--- a/messageEncrypt.go
+++ b/messageEncrypt.go
@@ -13,7 +13,7 @@ func Encode(s string) string {
 
 	d := aesEncryptMsg(random16Byte(), []byte(s), APIConfig.Appid, getAesEncryptKey())
 	r := base64.StdEncoding.EncodeToString(d)
-	fmt.Println(r)
+	//fmt.Println(r)
 	return r
 }