写出Java代码，线上账本管理系统，功能需求： （1）用户管理：实现系统用户登录功能； （2）账本管理：实现账单类型的增、改、删；账本信息（包括收入、支出的详细信息）的增、删、改、查。 （3）账单管理：日账单导出，用户单天账单信息的查询、导出；年账单导出，用户全年账单信息的查询、导出；用户年账单的统计。 （4）用户日常管理：用户日程、纪念日、重要事件的增、删、改、查，并向用户发送提醒信息。 （5）用户反馈管理：向小程序作者发送反馈消息。

抱歉，由于篇幅限制，我无法在这里展示完整的Java代码。但我可以给你提供一个大致的代码框架，供你参考。

1. 用户管理

- 用户实体类

public class User {
    private Long id;
    private String username;
    private String password;
    private String email;
    private String phoneNumber;
    // getter and setter
}

- 用户登录控制器

@Controller
public class LoginController {
    @Autowired
    private UserService userService;

    @GetMapping("/login")
    public String login() {
        return "login";
    }

    @PostMapping("/login")
    public String login(String username, String password, HttpSession session) {
        User user = userService.login(username, password);
        if (user != null) {
            session.setAttribute("user", user);
            return "redirect:/home";
        } else {
            return "login";
        }
    }
}

2. 账本管理

- 账单类型实体类

public class BillType {
    private Long id;
    private String name;
    // getter and setter
}

- 账单实体类

public class Bill {
    private Long id;
    private BigDecimal amount;
    private Date date;
    private String remark;
    private BillType type;
    private User user;
    // getter and setter
}

- 账单管理控制器

@Controller
public class BillController {
    @Autowired
    private BillService billService;

    @GetMapping("/bill")
    public String list(Model model) {
        List<Bill> bills = billService.getAllBills();
        model.addAttribute("bills", bills);
        return "bill/list";
    }

    @GetMapping("/bill/add")
    public String add(Model model) {
        List<BillType> types = billService.getAllBillTypes();
        model.addAttribute("types", types);
        return "bill/add";
    }

    @PostMapping("/bill/add")
    public String add(Bill bill, HttpSession session) {
        User user = (User) session.getAttribute("user");
        bill.setUser(user);
        billService.addBill(bill);
        return "redirect:/bill";
    }

    @GetMapping("/bill/edit/{id}")
    public String edit(@PathVariable Long id, Model model) {
        Bill bill = billService.getBillById(id);
        List<BillType> types = billService.getAllBillTypes();
        model.addAttribute("bill", bill);
        model.addAttribute("types", types);
        return "bill/edit";
    }

    @PostMapping("/bill/edit")
    public String edit(Bill bill) {
        billService.updateBill(bill);
        return "redirect:/bill";
    }

    @GetMapping("/bill/delete/{id}")
    public String delete(@PathVariable Long id) {
        billService.deleteBill(id);
        return "redirect:/bill";
    }
}

3. 账单管理

- 账单管理控制器

@Controller
public class BillManageController {
    @Autowired
    private BillService billService;

    @GetMapping("/bill/export/day")
    public void exportDayBill(Date date, HttpServletResponse response) {
        List<Bill> bills = billService.getDayBills(date);
        // 导出Excel或CSV文件
    }

    @GetMapping("/bill/export/year")
    public void exportYearBill(Integer year, HttpServletResponse response) {
        List<Bill> bills = billService.getYearBills(year);
        // 导出Excel或CSV文件
    }

    @GetMapping("/bill/statistics/year")
    public String statisticsYearBill(Integer year, Model model) {
        BigDecimal income = billService.getYearIncome(year);
        BigDecimal expense = billService.getYearExpense(year);
        model.addAttribute("income", income);
        model.addAttribute("expense", expense);
        return "bill/statistics";
    }
}

4. 用户日常管理

- 日程实体类

public class Schedule {
    private Long id;
    private String name;
    private Date date;
    private String remark;
    private User user;
    // getter and setter
}

- 日程管理控制器

@Controller
public class ScheduleController {
    @Autowired
    private ScheduleService scheduleService;

    @GetMapping("/schedule")
    public String list(Model model) {
        List<Schedule> schedules = scheduleService.getAllSchedules();
        model.addAttribute("schedules", schedules);
        return "schedule/list";
    }

    @GetMapping("/schedule/add")
    public String add() {
        return "schedule/add";
    }

    @PostMapping("/schedule/add")
    public String add(Schedule schedule, HttpSession session) {
        User user = (User) session.getAttribute("user");
        schedule.setUser(user);
        scheduleService.addSchedule(schedule);
        return "redirect:/schedule";
    }

    @GetMapping("/schedule/edit/{id}")
    public String edit(@PathVariable Long id, Model model) {
        Schedule schedule = scheduleService.getScheduleById(id);
        model.addAttribute("schedule", schedule);
        return "schedule/edit";
    }

    @PostMapping("/schedule/edit")
    public String edit(Schedule schedule) {
        scheduleService.updateSchedule(schedule);
        return "redirect:/schedule";
    }

    @GetMapping("/schedule/delete/{id}")
    public String delete(@PathVariable Long id) {
        scheduleService.deleteSchedule(id);
        return "redirect:/schedule";
    }
}

5. 用户反馈管理

- 反馈实体类

public class Feedback {
    private Long id;
    private String content;
    private User user;
    // getter and setter
}

- 反馈管理控制器

@Controller
public class FeedbackController {
    @Autowired
    private FeedbackService feedbackService;

    @GetMapping("/feedback")
    public String add() {
        return "feedback/add";
    }

    @PostMapping("/feedback")
    public String add(Feedback feedback, HttpSession session) {
        User user = (User) session.getAttribute("user");
        feedback.setUser(user);
        feedbackService.addFeedback(feedback);
        return "redirect:/feedback";
    }
}

以上只是一个大致的代码框架，具体实现还需要进一步细化和完善。