create CategoryRowMapper Class
finish getCategoryById with spring
finish with spring
rename AppTests to AppTest
modify target and .idea
create .gitignore file
configure .idea
new .gitkeep file
add CartItem test codes
add service pakage test codes
add ulti pakage test codes
add vo class test code
delete useless codes
modify App
modify Printer
create ItemRowMapper Class
configure .idea
finish mapRow method in ItemRowMapper
create PromotionRowMapper class
finish getItems method with Spring