我在两个列表上循环，并希望将对象添加到一个自定义对象中。因此，我从Thymeleaf中获取一个Employee列表和一个Doubles列表，并将它们保存到数据库中。我希望将它们保存到对象EmployeeProject中，该对象接受一个Employee，一个项目和一个双精度（employeeBookedMonths）。我的问题是，我要么将多个项目保存到EmployeeProject，但所有项目月份都是相同的（列表中最后一个双精度值1）或者我将多个项目保存到employeeProject中，employeeBookedMonths正确，但存在重复项，例如，如果我保存了3个项目，其中包含3个employeeBookedMonths，我得到3次每次保存（所以9保存）。我已经尝试移动employeeProjectService.saveEmployeeProject，但不能使它工作加上许多其他变化，但我需要一些帮助。
问：我如何循环遍历这两个列表，并将它们添加到EmployeeProject对象中？不获取倍数，或者只获取最后一个employeeBookedMonths。
先谢谢你。
此外，System.println打印所需的值，它们只是不保存。

public String saveEmployee(@ModelAttribute("employee") Employee employee,
                               @RequestParam("projectId") List<Project> projectIds,
                               @RequestParam("employeeProjectMonths") List<Double> months) {
        List<Double> monthList = new ArrayList<>();
        for (Double month : months) {
            if (month != null) {
                monthList.add(month);
                System.out.println("Month:" + month);
            }
        }
        employeeService.saveEmployee(employee);
        if (projectIds != null) {
            EmployeeProject employeeProject = new EmployeeProject(employee);
            for (Project ids : projectIds) {
                for (Double month : monthList) {
                    employeeProject.setEmployeeBookedMonths(month);
                    System.out.println("Months: " + employeeProject.getEmployeeBookedMonths());
                    employeeProjectService.saveEmployeeProject(employee, ids, month);
                }
            }
        }
        return "redirect:/ines/employees";
    }

新员工表单

<form action="#" th:action="@{/ines/saveEmployeeMeeting}" th:object="${employee}"
            method="POST" enctype="multipart/form-data">
            <div class="form-group">
                <label>Email:</label>
                <input type="text" th:field="*{name}"
                       placeholder="Employee Name" class="form-control mb-4 col-4">
            </div>
            <th:block th:object="${meetingInfo}">
                <div class="form-group">
                    <label>Start Time:</label>
                    <div class="input-group date" id="datetimepicker1" data-target-input="nearest">
                        <input type="text" class="form-control datetimepicker-input"
                               th:field="*{meetingStartDateTime}" id="meetingStartDateTime"/>
                        <span class="input-group-addon">
                            <span class="glyphicon glyphicon-calendar"></span>
                    </span>
                    </div>
                </div>
                <div class="form-group">
                    <label>End Time:</label>
                    <div class="input-group date" id="datetimepicker2" data-target-input="nearest">
                        <input type="text" class="form-control datetimepicker-input" data-target="#datetimepicker1"
                               th:field="*{meetingEndDateTime}" id="meetingEndDateTime" placeholder="Date"/>
                        <span class="input-group-addon">
                            <span class="glyphicon glyphicon-calendar"></span>
                    </span>
                    </div>
                </div>
            <div class="form-group">
                <input type="text" th:field="*{message}"
                       placeholder="Message" class="form-control mb-4 col-4">
            </div>
            </th:block>

            <button type="submit" class="btn btn-info col-2">Save Employee/Meeting</button>
        </form>