我需要将一个对象列表作为属性绑定。它是一个静态列表，它在Controller中创建并部分填充。它在视图中正确显示，但是在将表单发送到控制器时，未设置输入字段中的值。我做了一些研究，发现了几个类似的问题，但是所提出的解决方案都没有对我有用。
edit.jsp文件
<c:forEach items="${priceConfigurationForm.priceList}" var="price" varStatus="priceStatus">
<tr>
<td>
<spring:bind path="priceConfigurationForm.priceList[${priceStatus.index}].country">
${price.country}
<input type="hidden" name="<c:out value="${status.expression}"/>"
id="<c:out value="${status.expression}"/>"
value="<c:out value="${status.value}"/>"/>
</spring:bind>
</td>
<td>
<spring:bind path="priceConfigurationForm.priceList[${priceStatus.index}].amount">
<input type="text" name="price" value="${price.amount}"/>
<input type="hidden"
name="<c:out value="${status.expression}"/>"
id="<c:out value="${status.expression}"/>"
value="<c:out value="${status.value}"/>"/>
</spring:bind>
</td>
<td>
<spring:bind path="priceConfigurationForm.priceList[${priceStatus.index}].currency">
${price.currency}
<input type="hidden" name="<c:out value="${status.expression}"/>"
id="<c:out value="${status.expression}"/>"
value="<c:out value="${status.value}"/>"/>
</spring:bind>
</td>
</tr>
</c:forEach>
摘要来自Controller填充列表：
@RequestMapping(value = "/price/create", method = RequestMethod.GET)
public String toCreatePriceConfiguratioView(Model model) {
log.info("::createPriceConfiguration: {}");
final PriceConfigurationForm priceConfigurationForm = new PriceConfigurationForm();
final List<PriceConfigurationForm.Price> prices = new ArrayList<>();
for (Country country : Country.values()) {
PriceConfigurationForm.Price price = new PriceConfigurationForm.Price();
price.setAmount(100);
price.setCountry(country.getCountryCode());
price.setCurrency(country.getCurrency());
prices.add(price);
}
priceConfigurationForm.setPriceList(prices);
model.addAttribute("priceConfigurationForm", priceConfigurationForm);
return "/secured/sources/onboarding/price/edit";
}
来自Controller的摘要用于存储列表：
@RequestMapping(value = "/price/create", method = RequestMethod.POST)
public String createPriceConfiguration(Model model, @ModelAttribute("priceConfigurationForm") @Valid PriceConfigurationForm priceConfigurationForm, BindingResult bindingResult, RedirectAttributes attributes) {
log.info("::createPriceConfiguration {}", priceConfigurationForm);
// TODO: Validate, before create
/* transform form to domain object */
PriceConfiguration configuration = PriceConfigurationForm.toPriceConfiguration(priceConfigurationForm);
onboardingApi.createPriceConfiguration(configuration);
attributes.addFlashAttribute("message", success("price configuration saved", priceConfigurationForm.getName()));
return "/secured/sources/onboarding/price/index";
}
对象：
@Data
public class PriceConfigurationForm {
private String name;
private String description;
private List<Price> priceList;
private Map<String, Long> countryToPriceMap;
public static PriceConfiguration toPriceConfiguration(PriceConfigurationForm form) {
final PriceConfiguration pc = new PriceConfiguration();
pc.setName(form.getName());
pc.setDescription(form.getDescription());
final Map<String, Long> prices = form.getPriceList().stream().collect(toMap(Price::getCountry, Price::getAmount));
pc.setCountryToPriceMap(prices);
return pc;
}
@Data
public static class Price {
private String country;
private long amount;
private String currency;
}
}
答案 0 :(得分：0)
这是我在一个项目中成功解析嵌套对象的示例：
<c:forEach var="block" items="${newplaceform.blocks}" varStatus="counter">
<fieldset data-block-order="${counter.index}" data-block-index="${counter.index}">
<c:if test='${block.type=="quizSingleAnswer"}'>
<legend><s:message code='blocks.type.quizSingleAnswer'/> <a class="glyphicon glyphicon-move move-block pull-right" href="#"></a><a data-remove="block" class="glyphicon glyphicon-remove pull-right" href="#"></a><a data-reordering="up" class="glyphicon glyphicon-chevron-up pull-right" href="#"></a><a data-reordering="down" class="glyphicon glyphicon-chevron-down pull-right" href="#"></a></legend>
<div class="form-group production-hide">
<label class="col-sm-3 control-label">id:</label>
<div class="col-sm-9"><input type="text" name="blocks[${counter.index}].id" value="${block.id}" data-row="blockId" data-disabled class="form-control"/></div>
</div>
<div class="form-group production-hide">
<label class="col-sm-3 control-label">type:</label>
<div class="col-sm-9"><input type="text" name="blocks[${counter.index}].type" value="${block.type}" data-disabled class="form-control"/></div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label"><s:message code='blocks.description'/>:</label>
<div class="col-sm-9"><textarea class="form-control" name="blocks[${counter.index}].description" data-description rows="3">${block.description}</textarea></div>
</div>
<div class="row">
<div class="col-sm-6">
<div class="col-sm-6 control-label">
<label class="inner-header"><s:message code='blocks.answers'/>:</label>
</div>
<div class="col-sm-6">
<div class="btn-group m-t-9">
<a class="btn btn-primary btn-xs" href="#" data-add-answer data-add-answer-block-index="${counter.index}"><i class="glyphicon glyphicon-plus"></i> <s:message code="blocks.add-answer" /></a>
</div>
</div>
</div>
</div>
<div class="row quiz-answers" data-count-answer="${block.answers.size()}">
<c:forEach var="answer" items="${block.answers}" varStatus="counterInner">
<div class="col-sm-6">
<fieldset>
<legend>
<div class="bootstrap-center">
<span><s:message code="blocks.answerNo"/> ${counterInner.index+1}</span>
<a data-remove="answer" class="glyphicon glyphicon-remove pull-right" href="#"></a>
</div>
</legend>
<div class="form-group production-hide">
<label class="col-sm-6 control-label">id:</label>
<div class="col-sm-6"><input type="text" name="blocks[${counter.index}].answers[${counterInner.index}].id" value="${answer.id}" data-row="answerId" data-disabled class="form-control"/></div>
</div>
<div class="form-group">
<label class="col-sm-6 control-label"><s:message code="blocks.answer"/>:</label>
<div class="col-sm-6"><input type="text" name="blocks[${counter.index}].answers[${counterInner.index}].text" value="${answer.text}" class="form-control"/></div>
</div>
<div class="form-group">
<div class="col-sm-6 col-sm-offset-6">
<div class="checkbox">
<label>
<input type="checkbox" name="blocks[${counter.index}].answers[${counterInner.index}].right" value="true" ${answer.checked()}/>
<s:message code="blocks.right"/>
</label>
</div>
</div>
</div>
</fieldset>
</div>
</c:forEach>
</div>