案例： 我有一个组织对象。它有一个部门对象列表，每个部门都有一个员工对象列表。
在 JSP 中，我有一个复选框列表，它将复选框绑定到员工对象（深入 2 个层次结构。即组织-> 部门-> 员工）。
<input type="checkbox" name="adminDepartmentList[${status.index}].employeeList" value="${employee.firstName}"> <c:out value="${employee.firstName}" /><br>
如你看到的：
adminDepartmentList[0].employeeList --> John
adminDepartmentList[2].employeeList --> Rose
装订很好。提交表单后，在控制器中，我可以遍历 admin departmentList 并找到所有创建的部门，并找到由于选中复选框而创建的员工。
问题:(部门是用空名称和非空员工列表创建的。我找不到员工列表所属的部门名称:(那么我如何传递一些部门名称以便将名称注入部门（如它正在创建中）就像“.employeeList”如何被注入部门一样。
细节： 给你我工作的细节：
一个组织类有两个部门列表。一个部门类有一个员工列表。员工有名字和姓氏以及hourToWork。
public class Organization{
private long id;
private String name;
private List<Department> adminDepartmentList; //n admin departments
private List<Department> employeeDepartmentList //m employee departments
// default constructor and all getters and setters
}
public class Department{
private long id;
private String name;
private List<Employee> employeeList; //k employees
//default constructor and all getters and setters
}
public class Employee{
private long id;
private String firstName;
private String lastName;
private int hoursToWork; // to be filled from Spring MVC form
//default contructor and all getters and setters
}
部门列表来自 API。该部门的所有员工都来自另一个 API。
我正在编写一个客户端，使用户能够通过首先选择他们感兴趣的部门来创建“自定义组织”，然后对于选择的每个部门，用户从与该部门相关的所有员工中选择一部分员工。
所以我有 3 个 JSP 表单：
组织形式（organization.jsp）：组织名称的输入字段和所有部门的复选框列表。用户可以为正在创建的新组织选择一组部门。
<form:form name='fs' action="department.htm" method='POST' commandName="organization">
Organization Name:
<input type="text" name="name" >
<!-- ============================================================== -->
Departments:<br> Select admin-departments you want.
<div class="checkbox-list">
<%-- Size :<c:out value="${organization.adminDepartmentList.size}"/> --%>
<c:forEach var="i" varStatus="status" items="${organization.adminDepartmentList}">
<input type="checkbox" name="adminDepartmentList" value="${i.name}"> <c:out value="${i.name}" /><br>
</c:forEach>
</div>
<!-- ============================================================== -->
Departments:<br> Select employee-departments you want.
<div class="checkbox-list">
<c:forEach var="i" varStatus="status" items="${organization.employeeDepartmentList}">
<input type="checkbox" name="employeeDepartmentList" value="${i.name}"> <c:out value="${i.name}" /><br>
</c:forEach>
</div>
<button type="submit" class="btn btn-lg btn-primary btn-block">Next Step</button>
</form:form>
部门表单 (department.jsp)：对于每个被选中的部门，这显示了为部门选择的员工的复选框列表。
<form:form name='f' action="employee.htm" method='POST' commandName="organization">
Organization Name: <c:out value="${organization.name}" /><br>
Select Employees you want for your new Departments.
Admin Departments:<br>
<c:forEach var="department" varStatus="status" items="${organization.adminDepartmentList}">
______Dept: <c:out value="${department.name}" /><br>
<div class="checkbox-list">
<c:forEach var="employee" varStatus="status" items="${department.employeeList}">
<input type="checkbox" name="adminDepartmentList[${status.index}].employeeList" value="${employee.firstName}"> <c:out value="${employee.firstName}" /><br>
</c:forEach>
</div>
</c:forEach>
Employee Departments:<br>
<c:forEach var="department" varStatus="status" items="${organization.employeeDepartmentList}">
______Dept: <c:out value="${department.name}" /><br>
<div class="checkbox-list">
<c:forEach var="employee" varStatus="status" items="${department.employeeList}">
<input type="checkbox" name="employeeDepartmentList[${status.index}].employeeList" value="${employee.firstName}"> <c:out value="${employee.firstName}" /><br>
</c:forEach>
</div>
</c:forEach>
<button type="submit" class="btn btn-lg btn-primary btn-block">Next Step</button>
</form:form>
员工表单 (employee.jsp)：对于在部门表单中选择的每个员工，这将显示员工姓名和用于输入将分配给该员工的小时数的字段。
员工控制器（获得空部门名称的那个）
@RequestMapping(value = "/employee", method = RequestMethod.POST)
public String product_post(@ModelAttribute("organization") Organization organization, HttpServletRequest request,
HttpServletResponse response, BindingResult result, ModelMap model) {
System.out.println("=========== POST Employee CONTROLLER===============");
//STEP 1. show me which employees are selected for each admin department.
List<Department> adminDepartments = organization.getAdminDepartmentList();
for(Department dept: adminDepartments){
System.out.println("Admin Dept name::: " + dept.getName()); //<-----------Name Comes as null :(
List<Employee> employeeList = dept.getEmployeeList();
for(Employee emp: employeeList){
System.out.println("Employee::"+ emp.getFirstName());
}
}
//STEP 2. show me which employees are selected for each employee department.
List<Department> employeeDepartments = organization.getEmployeeDepartmentList();
for(Department dept: employeeDepartments){
System.out.println("Employee Dept name::: " + dept.getName()); //<----------Name Comes as null :(
List<Employee> employeeList = dept.getEmployeeList();
for(Employee emp: employeeList){
System.out.println("Employee::"+ emp.getFirstName());
}
}
model.addAttribute("organization", organization);
return "employee";
}
已知： 我理解为什么没有注入 department.name，但我不知道如何解决它。如何将部门名称从外部循环注入到运行在下面 c:foreach 中的员工列表上的内部循环？或者如何以某种方式将其绑定到每个员工。我怀疑它在这里：
Admin Departments:<br>
<c:forEach var="department" varStatus="status" items="${organization.adminDepartmentList}">
______Dept: <c:out value="${department.name}" /><br>
<div class="checkbox-list">
<c:forEach var="employee" varStatus="status" items="${department.employeeList}">
<input type="checkbox" name="adminDepartmentList[${status.index}].employeeList" value="${employee.firstName}"> <c:out value="${employee.firstName}" /><br>
</c:forEach>
</div>
</c:forEach>
我尝试隐藏输入来帮助创建命名部门，但没有帮助。
学分：
非常感谢您的合作:)
为简单起见，假设员工的名字是唯一的。而且 department.name 也是唯一的。谢谢。