update set token from cache

client.go

@@ -22,6 +22,11 @@ func NewClient(appID, appSecret, token, encodingAESKey string) *Client {
 	return c
 }
 
+// UseCacheToken token from cache
+func (wc *Client) UseCacheToken() {
+	wc.UseCacheToken = true
+}
+
 // getToken get token
 func (wc *Client) getToken() (token string, err error) {
 	key := keyToken(wc.AppID)