Question

我正在尝试发送REST请求，响应的第一部分可用，但我无法访问第二部分。

<SearchResults>
<TotalHotelsFound>7250</TotalHotelsFound>
<CheckInDate>2016-01-07</CheckInDate>
<CheckOutDate>2016-01-09</CheckOutDate>
<Currency>EUR</Currency>
<SearchId>HB-82365485</SearchId>
<Hotels>
  <Hotel>
    <HotelCode>FRYX72</HotelCode>
    <ProcessId>O3-69817815</ProcessId>
    <BoardType>Room Only</BoardType>
    <BookingURL>http://www.otel.com/hotels/nomad_paris_roissy_cdg_hotel.htm?processid=HB-82326485FRYX734</BookingURL>
    <TotalPrice>87</TotalPrice>
    <FreeCancel>unknown</FreeCancel>   
    <PaymentType>prepaid</PaymentType>
    <Tax>14</Tax>
    <AverageNightRate>43</AverageNightRate>
    <RoomTypes>Double Or Twin/Double Standard</RoomTypes>
    <AverageRatePerNightPerRoom>43.36</AverageRatePerNightPerRoom>
    <Rooms>
     <Room>
       <Type>double or twin standard</Type>
       <RoomDesc>Double Or Twin Standard</RoomDesc>
       <Adults>2</Adults>
       <Children/>
       <TotalRate>87</TotalRate>
       <Tax>12</Tax>
       <Rates/>
       <AverageNightRoomRate>43</AverageNightRoomRate>
    </Room>
   </Rooms>
  </Hotel>
  <Hotel>
    <HotelCode>FRYX72</HotelCode>
    <ProcessId>O0-63816095</ProcessId>
    <BoardType>Room Only</BoardType>
    <BookingURL>http://www.otel.com/hotels/nomad_paris_roissy_cdg_hotel.htm?processid=HB-82356285FRYX789</BookingURL>  
    <TotalPrice>87</TotalPrice>
    <FreeCancel>unknown</FreeCancel>
    <PaymentType>prepaid</PaymentType>
    <Tax>14</Tax>
    <AverageNightRate>43</AverageNightRate>
    <RoomTypes>Double Or Twin/Double Standard</RoomTypes>
    <AverageRatePerNightPerRoom>43.36</AverageRatePerNightPerRoom>
    <Rooms>
      <Room>
        <Type>double or twin standard</Type>
        <RoomDesc>Double Or Twin Standard</RoomDesc>
        <Adults>2</Adults>
        <Children/>
        <TotalRate>87</TotalRate>
        <Tax>12</Tax>
        <Rates/>
        <AverageNightRoomRate>43</AverageNightRoomRate>
      </Room>
   </Rooms>
</Hotel>

代码

try {
            System.err.println(">>> Otel");
            final String AFFILIATE = "Username";
            final String URL = "http://ws.hotelspro.com/xml/test-search-otel.php?affiliate="
                    + AFFILIATE;
            String readyUrl = URL + "&country=FR&city=Paris&checkin=2016-1-7&checkout=2016-1-9&currency=EUR&rooms=1&adults1=2";
            System.err.println(">>>" + readyUrl);
            RestTemplate restTemplate = new RestTemplate();
            SearchResults searchResults = restTemplate.getForObject(readyUrl,
                    SearchResults.class);
            if (searchResults == null) {
                System.err.println("it is null");
            } else {
                System.err.println("message:>>"
                        + searchResults.getTotalHotelsFound());
            }
            System.err.println(">>>" + searchResults.getHotels().size());
            System.err.println(">>>" + searchResults.getHotels().get(0).getHotelCode());
            System.err.println(">>>" + searchResults.getHotels().get(0).getHotelCode());
            System.err
                    .println("Otel>>>" + searchResults.getHotels().get(0).getPaymentType());
            System.err.println("event>>" + searchResults.getHotels().get(0).getBookingUrl());
        } catch (NullPointerException e) {
            e.printStackTrace();
        }

JAXB

@XmlRootElement(name = "SearchResults")
@XmlAccessorType(XmlAccessType.FIELD)
public class SearchResults {
    @XmlElement(name = "TotalHotelsFound")
    private int totalHotelsFound;
    @XmlElement(name = "CheckInDate")
    private Date checkInDate;
    @XmlElement(name = "CheckOutDate")
    private Date checkOutDate;
    @XmlElement(name = "Currency")
    private String currency;
    @XmlElement(name = "SearchId")
    private String searchId;
    @XmlElement(name = "Hotels")
    private List<Hotel> hotels;
     getters and setters


@XmlRootElement(name = "Hotel")
@XmlAccessorType(XmlAccessType.FIELD)
public class Hotel {
    @XmlElement(name = "HotelCode")
    private String hotelCode;
    @XmlElement(name = "ProcessId")
    private String processId;
    @XmlElement(name = "BoardType")
    private String boardType;
    @XmlElement(name = "BookingURL")
    private String bookingUrl;
    @XmlElement(name = "TotalPrice")
    private double totalPrice;
    @XmlElement(name = "FreeCancel")
    private String freeCancel;
    @XmlElement(name = "PaymentType")
    private String paymentType;
    @XmlElement(name = "Tax")
    private int tax;
    @XmlElement(name = "AverageNightRate")
    private double averageNightRate;
    @XmlElement(name = "RoomTypes")
    private String roomType;
    @XmlElement(name = "AverageRatePerNightPerRoom")
    private double averageRatePerNightPerRoom;
    @XmlElement(name = "Rooms")
    private List<Room> rooms;
    getters and setters


@XmlRootElement(name = "Room")
@XmlAccessorType(XmlAccessType.FIELD)
public class Room {
    @XmlElement(name = "Type")
    private String type;
    @XmlElement(name = "RoomDesc")
    private String roomDesc;
    @XmlElement(name = "Adults")
    private int adults;
    @XmlElement(name = "Children")
    private int children;
    @XmlElement(name = "TotalRate")
    private double totalRate;
    @XmlElement(name = "Tax")
    private double tax;
    @XmlElement(name = "Rates")
    private String rates;
    @XmlElement(name = "AverageNightRoomRate")
    private int averageNightRoomRate;
    getters and setters

输出

我收到以下输出，如下图所示，第一部分已阅读，但酒店列表不会被填充。

message:>>7258
>>>1
>>>null
>>>null
Otel>>>null
event>>null

Answer 1

您需要将@XmlElementWrapper用于列表

@XmlRootElement(name = "SearchResults")
@XmlAccessorType(XmlAccessType.FIELD)
public static class SearchResults {
    @XmlElement(name = "TotalHotelsFound")
    private int totalHotelsFound;
    @XmlElement(name = "CheckInDate")
    private Date checkInDate;
    @XmlElement(name = "CheckOutDate")
    private Date checkOutDate;
    @XmlElement(name = "Currency")
    private String currency;
    @XmlElement(name = "SearchId")
    private String searchId;
    @XmlElementWrapper(name = "Hotels")
    @XmlElement(name = "Hotel")
    private List<Hotel> hotels;

}

和房间一样

Answer 2

我相信您的示例XML中可能会有一些缺少的标记，特别是</Hotels>和</SearchResults>

上面的代码表明您已尝试指定多个根元素。首先，这是不正确的。 SearchResults将是您的根元素，并且包含所有其他元素。这是更准确的JAXB代码：

SearchResults类：

@XmlRootElement(name = "SearchResults")
@XmlAccessorType(XmlAccessType.FIELD)
public class SearchResults {
    @XmlElement(name = "TotalHotelsFound")
    private int totalHotelsFound;
    @XmlElement(name = "CheckInDate")
    private Date checkInDate;
    @XmlElement(name = "CheckOutDate")
    private Date checkOutDate;
    @XmlElement(name = "Currency")
    private String currency;
    @XmlElement(name = "SearchId")
    private String searchId;
    @XmlElement(name = "Hotels")
    private Hotels hotels;

    //getters and setters
}

酒店课程：

@XmlAccessorType(XmlAccessType.FIELD)
public class Hotels {
    @XmlElement(name = "Hotel")
    private List<Hotel> hotel;

    //getters and setters
}

酒店课程：

@XmlAccessorType(XmlAccessType.FIELD)
public class Hotel {
    @XmlElement(name = "HotelCode")
    private String hotelCode;
    @XmlElement(name = "ProcessId")
    private String processId;
    ...etc

    //getters and setters
}

我希望这会有所帮助。

无法使用RestTemplate

2 个答案: