Add entry.

Signed-off-by: cyberzhg <cyberzhg@gmail.com>
The insertion of user.

Signed-off-by: cyberzhg <cyberzhg@gmail.com>
Remove user.

Signed-off-by: cyberzhg <cyberzhg@gmail.com>
Encapsulate some database operations.

Signed-off-by: cyberzhg <cyberzhg@gmail.com>
Remove encapsulation.

Signed-off-by: cyberzhg <cyberzhg@gmail.com>
Add 'findAll' function to user.

Signed-off-by: cyberzhg <cyberzhg@gmail.com>
Merge branch 'dev'