Question

大家好！我正在开发这个安静的Web服务客户端，但是我在尝试获取嵌套元素时遇到了问题。这是我收到的XML。

<InstalledProducts>
 <InstalledProduct>
 <uri>
 <url>
 http://immix-test.natinst.com/ib-rest/1.0/installed-product/NIC:458513.xml
 </url>
 <urn>urn:installed-product:NIC:458513</urn>
 </uri>
 <instanceId>458513</instanceId>
 <site>NIC</site>
 <serialNumber>A49AD1</serialNumber>
 <productNumber>459513</productNumber>
 <ibStatus>Latest</ibStatus>
 <ibCreationDate>1998-10-14</ibCreationDate>
 <partNumber>
  <urn>urn:product-item:181830E-01</urn>
 </partNumber>
 <latestServiceContracts>
 <url>
 http://immix-test.natinst.com/ib-rest/1.0/installed-product/NIC:458513/latestServiceContracts.xml
 </url>
 </latestServiceContracts>
 <allServiceContracts>
  <url>
   http://immix-test.natinst.com/ib-rest/1.0/installed-product/NIC:458513/allServiceContracts.xml
  </url>
  </allServiceContracts>
 </InstalledProduct>
</InstalledProducts>

这是处理InstalledProduct RootElement

的Java类

import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;

import org.apache.log4j.Logger;

@XmlRootElement(name = "InstalledProduct")
public class InstalledProductDTO {
private ContractsURL latestServiceContracts;
private PartNumber partNumber;
public static Logger logger = Logger.getLogger(InstalledProductDTO.class);
private int instanceId;
private String status;

@XmlElement(name = "serviceStatus")
public String getStatus() {
    return status;
}

public void setStatus(String status) {
    this.status = status;
}

@XmlElement(name = "instanceId")
public int getInstanceId() {
    return instanceId;
}

public void setInstanceId(int instanceId) {
    this.instanceId = instanceId;
}

@XmlElement(name = "partNumber") 
public PartNumber getpartNumberURN(){
    return partNumber;      
}

public void setProductNumber(PartNumber partNumber){
    this.partNumber = partNumber;
}

@XmlElement(name = "latestServiceContracts")
public ContractsURL getLatestServiceContractsURL(){
    return latestServiceContracts;
}

public void setAllServiceContractsURL(ContractsURL latestServiceContractsURL){
    this.latestServiceContracts = latestServiceContractsURL;
}
}

这是处理partNumber标记的类，这是问题所在。

import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement(name = "partNumber")
public class PartNumber {

private String urn;

@XmlElement(name = "urn")
public String getURN()
{
    return urn;
}

public void setUrn(String urn){
    this.urn = urn;
}

}

当我尝试获取partNumber时，我得到一个null。有任何想法吗？

Answer 1

好的，我刚解决了。至少这对我有用。检查在InstalledProductDTO类中，partNumber xml标记的sets和gets与文本xml标记不匹配。标签是“partNumber”，但是get和set被称为getPartNumberURN和setPartNumberURN。所以我只是把它们改成了getPartNumber和setPartNumber，这很有效。如果这对你有用，请告诉我确认一下。如果我弄错了，请纠正我。谢谢，希望这有帮助！

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