JAXB编组

Question

我正在编写JAXB类，以便在xml下面解析。对于trackinginfoList，我总是得到null值，响应状态有值，我不确定这段代码有什么问题，您能告诉我吗？

@XmlRootElement(name = "CargoTrackingRespone")
   public class CargoTrackingRespone {

   private List<TrackingInfo> trackingInfoList;

   private ResponseStatus responseStatus;

   @XmlElements({@XmlElement(name = "TrackingInfo", type = TrackingInfo.class)} )
   @XmlElementWrapper(name = "TrackingInfoList" )
   public List<TrackingInfo> getTrackingInfoList() {
    return trackingInfoList;
  }

  public void setTrackingInfoList(List<TrackingInfo> trackingInfoList) {
    this.trackingInfoList = trackingInfoList;
  }

  @XmlElement(name = "Status")
  public ResponseStatus getResponseStatus() {
    return responseStatus;
  }

  public void setResponseStatus(ResponseStatus responseStatus) {
    this.responseStatus = responseStatus;
  }

}

XML文件：

<?xml version="1.0" encoding="UTF-8"?>
<CargoTrackingRespone>
  <TrackingInfo>
    <TrackID>12345</TrackID>
    <TrackStatus>
      <Code>ERROR</Code>
      <Description>No tracking information found</Description>
      <StatusUpdateDateTime>2014-01-14T14:51:11.551-06:00</StatusUpdateDateTime>
    </TrackStatus>
  </TrackingInfo>
  <Status>
    <Code>ERROR</Code>
    <Description>No shipment information available</Description>
    <ReasonCode>No Shipment.</ReasonCode>
  </Status>
</CargoTrackingRespone>

Answer 1

可以按以下方式对该属性进行注释，以匹配XML：

@XmlElement(name = "TrackingInfo")
public List<TrackingInfo> getTrackingInfoList() { 

获取更多信息

• http://blog.bdoughan.com/2010/09/jaxb-collection-properties.html

Answer 2

我认为您的TrackingInfo元素是用TrackingInfoList包装的。所以您的xml应该看起来像。

<?xml version="1.0" encoding="UTF-8"?>
<CargoTrackingRespone>
  <TrackingInfoList>    
      <TrackingInfo>
        <TrackID>12345</TrackID>
        <TrackStatus>
          <Code>ERROR</Code>
          <Description>No tracking information found</Description>
          <StatusUpdateDateTime>2014-01-14T14:51:11.551-06:00</StatusUpdateDateTime>
        </TrackStatus>
      </TrackingInfo>
  <TrackingInfoList>
  <Status>
    <Code>ERROR</Code>
    <Description>No shipment information available</Description>
    <ReasonCode>No Shipment.</ReasonCode>
  </Status>
</CargoTrackingRespone>

我在我的测试中创建了一个类，并封送xsd和生成的样例xml文件，发现xml和我从测试中得到的区别有这种区别。