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我有一个地区在我的jsp,我想通过测试显示部门列表,如果列表不是空的。这是我addDeparment.jsp代码文件如果测试没有显示代码部分 - 春天mvc
<c:if test="${!empty departments}">
<table align="center" border="1">
<tr>
<th>Department ID</th>
<th>Department Name</th>
<th>Options</th>
</tr>
<c:forEach items="${departments}" var="department">
<tr>
<td><c:out value="${department.departmentId}"/></td>
<td><c:out value="${department.departmentName}"/></td>
<td align="center"><a href="editDepartment?departmentId=${department.departmentId}">Edit</a> | <a href="deleteDepartment?departmentId=${department.departmentId}">Delete</a></td>
</tr>
</c:forEach>
</table>
</c:if>
这是一个得到所有的部门,其附加到一个HashMap集合控制器
@RequestMapping(value = "/addDepartment", method = RequestMethod.GET)
public ModelAndView addCategory(@ModelAttribute("command") Department department,
BindingResult result) {
Map<String, Object> model = new HashMap<String, Object>();
model.put("departments", departmentService.getDepartments());
return new ModelAndView("addDepartment");
}
如果我运行代码的这一部分在jsp文件中查看不显示
<tr>
<th>Department ID</th>
<th>Department Name</th>
<th>Options</th>
</tr>
找不出什么可能是错的。