java - Spring绑定(bind)jsp问题

Question

当点击如下所示的 Controller 方法时，我总是得到 500。

@RequestMapping(value ="transferInvoiceHdrForm", method = RequestMethod.GET)
protected ModelAndView showForm(@ModelAttribute("transferInvoice") TransferInvoiceForm trinvoiceform, final HttpServletRequest request, final HttpServletResponse response, Model model)throws Exception {
        TransferInvoiceHdr transferInvoiceHdr = new TransferInvoiceHdr();
        List<TransferInvoice> transferinvoice= transferInvoiceHdrService.getAssetCategoriesandTransfer();
        List<Employees> employees = transferInvoiceHdrService.getAssignEmployee();
        trinvoiceform.setTrinvoiceList(transferinvoice);
        log.info("++++"+trinvoiceform.getTrinvoiceList());
        model.addAttribute("employees", employees.get(0).getFullname());
    //  model.addAttribute("transferinvoice", transferinvoice);
        model.addAttribute("transferInvoiceHdr", transferInvoiceHdr);
        //model.addAttribute("transferInvoice", transferinvoice);

    return new ModelAndView("asset/transferInvoiceHdrForm", model.asMap());
}

我的 Pojo 与对象列表看起来像

public class TransferInvoiceForm {
private List<TransferInvoice> TrinvoiceList;
//getters and setters

在我的 JSP 中，我使用路径变量如下

<form:form method="post" action="/asset/invoice/searchctr" modelAttribute="transferInvoice">
             <fieldset>
              <c:forEach var="transferinvoiceType" items="${transferInvoice.TrinvoiceList}" varStatus="status">
                     <form:select path="TrinvoiceList[${status.index}].assetName" class="col-xs-12 col-lg-5 form-group">
                            <form:option value="0" selected="true">All</form:option>
                            <form:options value="${transferinvoiceType.assetName}"></form:options>
                    </form:select>
                    </c:forEach>
                     <c:forEach var="transferinvoiceType" items="${transferInvoice.TrinvoiceList}" varStatus="status">
                    <form:select path="TrinvoiceList[${status.index}].assettoLocation" class="col-xs-12 col-lg-5 form-group">
                             <form:option value="0" selected="true">All</form:option>
                            <form:options value="${transferinvoiceType.assettoLocation}"></form:options>
                        </form:select>
                     </c:forEach>

                    <button class="btn btn-primary" type="submit" class="col-xs-12 col-lg-6 form-group">
                        <fmt:message key="button.search" />
                    </button>
            </fieldset> 
        </form:form>

另一个有用的 java bean

 public class TransferInvoice {
    private String assetName;
    private String assettoLocation;
    private String actualTransferDate;
    private String scanserialCode;
    private String modelNum;
    private boolean check;
    //getters and setters 

任何帮助我得到 500 的原因。我彻底检查并确认我的 jsp 绑定(bind)中存在问题。任何帮助，将不胜感激。

谢谢

Answer 1

您可以使用以下过程从这种情况中恢复。每当您使用 JSTL 表单标记时，在您的 jsp 页面中您可以使用:

<form:form commandName="viewModel" method="POST">

在 Controller 部分，您可以直接使用 TransferInvoice 模型从 jsp 页面获取所有数据。如果需要将数据保留在 TransferInvoiceForm pojo 中，那么您可以在 Controller 下管理它。因此您可以按照以下代码操作:

@RequestMapping(value ="yourValue", method = RequestMethod.POST)
protected ModelAndView showForm(@ModelAttribute("viewModel") TransferInvoice transferInvoice, final HttpServletRequest request, final HttpServletResponse response, Model model)throws Exception {
   //use every thing for transferInvoice
}

使用method = RequestMethod.POST