fix 程序未适配的公众号事件直接返回

netflix-service/src/main/java/com/cyksj/service/gzh/factory/GzhMsgServiceFactory.java

@@ -22,7 +22,9 @@ public class GzhMsgServiceFactory {
 
 	public String handleMsg(MsgEvent msgEvent) {
 		GzhMsgService gzhMsgService = ghzMsgServiceMap.get(msgEvent.getMsgType().name());
-
+		if (gzhMsgService == null) {
+			return "";
+		}
 		return gzhMsgService.handleNotify(msgEvent);
 	}
 }