diff --git a/weixin4j-server/src/main/java/com/foxinmy/weixin4j/socket/README.md b/weixin4j-server/src/main/java/com/foxinmy/weixin4j/socket/README.md
index d1cdb6bb..ee6f5eb6 100644
--- a/weixin4j-server/src/main/java/com/foxinmy/weixin4j/socket/README.md
+++ b/weixin4j-server/src/main/java/com/foxinmy/weixin4j/socket/README.md
@@ -1,5 +1,7 @@
-WeixinMessageDecoder:对微信消息进行解码
+WeixinMessageDecoder:对微信消息解码
 
 WeixinRequestHandler:微信请求处理类
 
-WeixinResponseEncoder:对微信回复进行编码
\ No newline at end of file
+WeixinResponseEncoder:对微信回复编码
+
+SingleResponseEncoder:对微信单一回复编码
\ No newline at end of file
diff --git a/weixin4j-server/src/main/java/com/foxinmy/weixin4j/socket/WeixinServerInitializer.java b/weixin4j-server/src/main/java/com/foxinmy/weixin4j/socket/WeixinServerInitializer.java
index 6bfd8eb0..7e41b8a8 100644
--- a/weixin4j-server/src/main/java/com/foxinmy/weixin4j/socket/WeixinServerInitializer.java
+++ b/weixin4j-server/src/main/java/com/foxinmy/weixin4j/socket/WeixinServerInitializer.java
@@ -28,9 +28,6 @@ public class WeixinServerInitializer extends ChannelInitializer<SocketChannel> {
 
 	public WeixinServerInitializer(Map<String, AesToken> aesTokenMap,
 			WeixinMessageDispatcher messageDispatcher) throws WeixinException {
-		if (aesTokenMap.isEmpty()) {
-			throw new WeixinException("AesToken not be null.");
-		}
 		this.aesTokenMap = aesTokenMap;
 		this.messageDispatcher = messageDispatcher;
 	}