Jsp SpringMVC无法读取Bean属性

我正在使用SpringMVC构建一个系统，现在我正在执行

*.jsp

页面和 我收到以下错误消息：

Invalid property 'flrequest' of bean class [se.lowdin.jetbroker.agent.mvc.FlightRequestBean]: Bean property 'flrequest' is not readable or has an invalid getter method: Does the return type of the getter match the parameter type of the setter?

我已将此代码放入我的flightRequest.jsp：

<tr>    
    <th>Departure Airport</th>
    <td><form:select path="flrequest" items="${airport}"/></td>         
</tr>
<tr>
    <th>Arrival Airport</th>
    <td><form:select path="flrequest" items="${airport}"/></td>
</tr>

我还有一个hashmap，其中包含模拟机场，我正试图在我的表单中显示它：select。当我发现错误时。indexcontroller持有的其他列表显示良好，但hashmap不显示

@Controller
public class IndexController {

    @Inject
    CustomerService customerService;

    @Inject
    FlightRequestService flightService;

    @Inject
    AirportService airportService;

    @RequestMapping("/index.html")
    public ModelAndView index() {

        List<FlightRequest> requests = flightService.getAllFlightRequest();
        List<Customer> customers = customerService.getAllCustomers();
        HashMap<Long, Airport>airport = airportService.getAllAirportCodes();

        ModelAndView mav = new ModelAndView("index");
        mav.addObject("flightRequests", requests);
        mav.addObject("customers", customers);
        mav.addObject("airportCodes", airport);

        return mav;
    }


}

因此，在某个地方出现了导致错误消息的问题。有人知道问题的原因吗？

---

错误消息说明无效的getter和setter？但是这怎么可能呢，因为我使用的是hashmap，而不是你的

FlightRequestBean

应该有一个属性

flrequest

，带有适当的getter和setter。您选择的值需要存储在某个位置

@Controller
public class IndexController {

    @Inject
    CustomerService customerService;

    @Inject
    FlightRequestService flightService;

    @Inject
    AirportService airportService;

    @RequestMapping("/index.html")
    public ModelAndView index() {

        List<FlightRequest> requests = flightService.getAllFlightRequest();
        List<Customer> customers = customerService.getAllCustomers();
        HashMap<Long, Airport>airport = airportService.getAllAirportCodes();

        ModelAndView mav = new ModelAndView("index");
        mav.addObject("flightRequests", requests);
        mav.addObject("customers", customers);
        mav.addObject("airportCodes", airport);

        return mav;
    }


}

@Controller
@RequestMapping("/flightRequest/{id}.html")
public class FlightRequestController {

    @Inject 
    FlightRequestService service;

    @RequestMapping(method = RequestMethod.GET)
    public ModelAndView index(@PathVariable long id) {


        FlightRequestBean bean = new FlightRequestBean();

        if (id > 0) {
            FlightRequest flrequest = service.getFlightRequest(id);
            bean.copyValuesToBean(flrequest);
        }


        ModelAndView mav = new ModelAndView("flightRequest");
        mav.addObject("flightRequestBean", bean);
        return mav;


    }

    @RequestMapping(method = RequestMethod.POST)
    public ModelAndView handleSubmit(FlightRequestBean bean) {


        if (bean.getId() > 0) {
            FlightRequest flrequest = service.getFlightRequest(bean.getId());
            bean.copyBeanToFlightRequest(flrequest);
            service.updateFlightRequest(flrequest);
        } else {
            FlightRequest flrequest = new FlightRequest();
            bean.copyValuesToBean(flrequest);
            service.createFlightRequest(flrequest);
        }

        return new ModelAndView("redirect:/index.html");
    }



}