8:store_data()
MySql.db
result ==falseresult ==ture
Alt
9:return result
11:return create_success.jsp
menu_item.jsp
3:send_menu_data()
10:return create_failed.jsp
menu_item
2:return the data of menu item
Menu manager
4:check menu_item correctness()
MenuChecking.Servlet
1:see_menu_item.jsp()
[menu_item data.correctness]
Loop
6:return create_failed.jsp
7:check_true()
5:return result
