Index: ssts-web/src/main/java/com/forgon/disinfectsystem/security/userdetails/DaoUserDetailSSTSImpl.java
===================================================================
diff -u -r20267 -r21397
--- ssts-web/src/main/java/com/forgon/disinfectsystem/security/userdetails/DaoUserDetailSSTSImpl.java	(.../DaoUserDetailSSTSImpl.java)	(revision 20267)
+++ ssts-web/src/main/java/com/forgon/disinfectsystem/security/userdetails/DaoUserDetailSSTSImpl.java	(.../DaoUserDetailSSTSImpl.java)	(revision 21397)
@@ -137,6 +137,11 @@
 				request.getSession().setAttribute("message", "帐号" + username + "不存在.");
 			}
 			throw new UsernameNotFoundException("user not found in database");
+		}else{
+			//如果帐号存在,则删除session会话的消息
+			if(request != null){
+				request.getSession().removeAttribute("message");
+			}
 		}
 		
 		if(!currentLoginedUser.isEnabled()){