我正在尝试将对象与在GET上初始化的Map字段绑定,以呈现多个复选框标签。所有复选框都会在创建表单时显示,但是在提交表单时,不会绑定MessageForm(模型属性)对象中的所有Map条目(地图大小= 0)。在添加此地图字段之前,其他字段(消息)的设置都很好。如何获取MessageForm.hierarchySelections字段,以对GET请求中填充的所有条目进行设置?
unitNode.jsp(VIEW_MESSAGE_FORM):
<div class="nodeContainer">
<div class="nodeHeader">
<form:checkbox path="hierarchySelections['${node.code}']"/>
<form:label path="hierarchySelections['${node.code}']">
${node.name}
</form:label>
</div>
<div class="nodeChildren">
<c:forEach var="node" items="${node.children}">
<c:set var="node" value="${node}" scope="request"/>
<jsp:include page="unitNode.jsp"/>
</c:forEach>
</div>
</div>
MessageForm.java:
public class MessageForm {
private Message message;
private Map<String, Boolean> hierarchySelections = new HashMap<String, Boolean>();
// getters and setters
}
MessageFormController.java(节选):
@RequestMapping(value = "/message/new")
public String newMessage(final Model model) {
final MessageForm messageForm = new MessageForm();
// get the root hierarchy node
final Node rootNode = hierarchyService.getNodeHierarchy();
messageForm.getHeirarchy(rootNode);
final Stack<Node> nodeList = new Stack<Node>();
nodeList.add(rootNode);
final Map<String, Boolean> hierarchySelections = messageForm.getHierarchySelections();
while (!nodeList.isEmpty()) {
final Node node = nodeList.pop();
// set the selection status to false/unchecked
hierarchySelections.put(node.getCode(), Boolean.FALSE);
// add all children organization units to the stack
for (final Node nodeChild : node.getChildren()) {
nodeList.add(nodeChild);
}
}
model.addAttribute("messageForm", messageForm);
return VIEW_MESSAGE_FORM;
}
@RequestMapping(value = "/message/new", method = RequestMethod.POST)
public String createMessage(@Valid final MessageForm messageForm, final BindingResult bindingResult) {
if (bindingResult.hasErrors()) { // TODO
} else {
messageCenterService.createMessage(messageForm.getMessage());
}
return VIEW_MESSAGE_FORM;
}
最佳答案
我认为复选框序列化的工作方式与您期望的不同。
未选中的复选框元素不会提交,当选中时,来自value属性的文本将被发送。
因此,首先,使用Firebug / Chrome调试器(“网络”标签)来监视从浏览器发送到服务器的信息。