@@ -0,0 +1,184 @@
+package com.mercury.chat.common.exception;%0D%0A%0D%0Apublic class ChatException extends RuntimeException %7B%0D%0A%0D%0A%09private static final long serialVersionUID = -3020226599902573310L;%0D%0A%09%0D%0A%09%0D%0A%0D%0A%7D%0D%0A

add chat exception.