user 是SQL的保留字,对于保留字要加上[ ]的,例如表名或字段名为ADD就应改为[ADD],
rs.open"select * from user where username='"&username&"'",cn,1 ,1
此改成这样就行了
rs.open "select * from [user] where [username]='"&username&"'",cn,1,1
rs.open "select * from [user] where username='"&username&"'",cn,1
rs.open "select * from [user] where u[sername]='"&username&"'",cn,1