Question

当我尝试解析下面的字符串

时出现以下错误

<?xml version="1.0" encoding="UTF-8"?>
<CC5Response>
  <OrderId>ORDER-17305KXSH11966</OrderId>
  <GroupId>ORDER-173053333KXSH11966</GroupId>
  <Response>Approved</Response>
  <AuthCode>0293333584</AuthCode>
  <HostRefNum>73051033333011833</HostRefNum>
  <ProcReturnCode>00</ProcReturnCode>
  <TransId>17305K33245XSH11968</TransId>
  <ErrMsg></ErrMsg>
  <Extra>
    <SETTLEID>1</SETTLEID>
    <TRXDATE>20171101 10:23:18</TRXDATE>
    <ERRORCODE></ERRORCODE>
    <CARDBRAND>VISA</CARDBRAND>
    <CARDISSUER>CDM</CARDISSUER>
    <NUMCODE>00</NUMCODE>
  </Extra>
</CC5Response>

Unmarshalling的代码片段如下所示

JAXBContext jaxbContext = JAXBContext.newInstance(CC5Response.class);
XMLInputFactory xif = XMLInputFactory.newFactory();
Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
XMLStreamReader xsr = xif.createXMLStreamReader(IOUtils.toInputStream(sb.toString(), "UTF-8"));
Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
CC5Response res = (CC5Response) jaxbUnmarshaller.unmarshal(xsr);
System.out.println("*************"+res.toString());

下面给出了bean类

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType
@XmlRootElement(name = "CC5Response")
public class CC5Response {
    @XmlAttribute
    private String ProcReturnCode;
    // @XmlAttribute
    // private Extra Extra;
    /*public Extra getExtra() {
        return Extra;
    }

    public void setExtra(Extra extra) {
        Extra = extra;
    }*/

    @XmlAttribute
    private String AuthCode;
    @XmlAttribute
    private String OrderId;
    @XmlAttribute
    private String TransId;
    @XmlAttribute
    private String ErrMsg;
    @XmlAttribute
    private String Response;
    @XmlAttribute
    private String HostRefNum;
    @XmlAttribute
    private String GroupId;

我总是得到一个空值的普通对象。

Answer 1

要使JAXB unmarshaller正常工作，您应该将XML模拟到JAVA类的正确结构中......按照以下步骤操作，它将与您合作。

您的XML应该是：

<?xml version="1.0" encoding="UTF-8"?>
  <CC5Response>
     <OrderId>ORDER-17305KXSH11966</OrderId>  
     <GroupId>ORDER-173053333KXSH11966</GroupId>   
     <Response>Approved</Response>  
     <AuthCode>0293333584</AuthCode>   
     <HostRefNum>73051033333011833</HostRefNum>   
     <ProcReturnCode>00</ProcReturnCode>   
     <TransId>17305K33245XSH11968</TransId>  
     <ErrMsg>error message</ErrMsg> 
     <Extra>    
         <SETTLEID>1</SETTLEID>  
         <TRXDATE>20171101 10:23:18</TRXDATE>    
         <ERRORCODE>0000</ERRORCODE>    
         <CARDBRAND>VISA</CARDBRAND>    
         <CARDISSUER>CDM</CARDISSUER>    
         <NUMCODE>00</NUMCODE>   
    </Extra> 
  </CC5Response>

我们将在Java中创建2个必要的类：

2.1创建名为＆＃34; CC5Response.java＆＃34;喜欢：

@XmlRootElement(name = "CC5Response")
public class CC5Response {

    private String ProcReturnCode;
    private String AuthCode;
    private String OrderId;
    private String TransId;
    private String ErrMsg;
    private String Response;
    private String HostRefNum;
    private String GroupId;
    private List<Extra> Extra;   

    /**
     * @return the ProcReturnCode
    */
   @XmlElement(name="ProcReturnCode")
   public String getProcReturnCode() {
          return ProcReturnCode;
   }

  /**
   * @param ProcReturnCode the ProcReturnCode to set
  */

  public void setProcReturnCode(String ProcReturnCode) {
        this.ProcReturnCode = ProcReturnCode;
  }

   /**
   * @return the AuthCode
   */
   @XmlElement(name="AuthCode")
   public String getAuthCode() {
          return AuthCode;
   }

   /**
   * @param AuthCode the AuthCode to set
   */
  public void setAuthCode(String AuthCode) {
        this.AuthCode = AuthCode;
   }

  /**
  * @return the OrderId
  */
   @XmlElement(name="OrderId")
   public String getOrderId() {
       return OrderId;
  }

   /**
   * @param OrderId the OrderId to set
   */
   public void setOrderId(String OrderId) {
         this.OrderId = OrderId;
   }

   /**
    * @return the TransId
   */
  @XmlElement(name="TransId")
  public String getTransId() {
       return TransId;
  }

  /**
   * @param TransId the TransId to set
  */
  public void setTransId(String TransId) {
        this.TransId = TransId;
  }

  /**
   * @return the ErrMsg
  */
  @XmlElement(name="ErrMsg")
  public String getErrMsg() {
       return ErrMsg;
  }

  /**
   * @param ErrMsg the ErrMsg to set
  */
  public void setErrMsg(String ErrMsg) {
         this.ErrMsg = ErrMsg;
  } 

  /**
   * @return the Response
  */
   @XmlElement(name="Response")
   public String getResponse() {
       return Response;
   }

  /**
    * @param Response the Response to set
   */
   public void setResponse(String Response) {
       this.Response = Response;
   }

  /**
   * @return the HostRefNum
  */
 @XmlElement(name="HostRefNum")
 public String getHostRefNum() {
      return HostRefNum;
 }

 /**
  * @param HostRefNum the HostRefNum to set
 */
  public void setHostRefNum(String HostRefNum) {
        this.HostRefNum = HostRefNum;
  }

   /**
     * @return the GroupId
   */
   @XmlElement(name="GroupId")
   public String getGroupId() {
        return GroupId;
   }

  /**
   * @param GroupId the GroupId to set
   */
   public void setGroupId(String GroupId) {
        this.GroupId = GroupId;
   }

   /**
    * @return the Extra
    */
   @XmlElement(name="Extra")
   public List<Extra> getExtra() {
        return Extra;
   }

    /**
    * @param Extra the Extra to set
    */
    public void setExtra(List<Extra> Extra) {
              this.Extra = Extra;
   }
  }

2.2创建名为＆＃34; Extra.java＆＃34;喜欢：

 public class Extra {

    private String SETTLEID;
    private String TRXDATE;
    private String ERRORCODE;
    private String CARDBRAND;
    private String CARDISSUER;
    private String NUMCODE;

    /**
     * @return the SETTLEID
     */
    public String getSETTLEID() {
        return SETTLEID;
    }

    /**
     * @param SETTLEID the SETTLEID to set
     */
    public void setSETTLEID(String SETTLEID) {
        this.SETTLEID = SETTLEID;
    }

    /**
     * @return the TRXDATE
     */
    public String getTRXDATE() {
        return TRXDATE;
    }

    /**
     * @param TRXDATE the TRXDATE to set
     */
    public void setTRXDATE(String TRXDATE) {
        this.TRXDATE = TRXDATE;
    }

    /**
     * @return the ERRORCODE
     */
    public String getERRORCODE() {
        return ERRORCODE;
    }

    /**
     * @param ERRORCODE the ERRORCODE to set
     */
    public void setERRORCODE(String ERRORCODE) {
        this.ERRORCODE = ERRORCODE;
    }

    /**
     * @return the CARDBRAND
     */
    public String getCARDBRAND() {
        return CARDBRAND;
    }

    /**
     * @param CARDBRAND the CARDBRAND to set
     */
    public void setCARDBRAND(String CARDBRAND) {
        this.CARDBRAND = CARDBRAND;
    }

    /**
     * @return the CARDISSUER
     */
    public String getCARDISSUER() {
        return CARDISSUER;
    }

    /**
     * @param CARDISSUER the CARDISSUER to set
     */
    public void setCARDISSUER(String CARDISSUER) {
        this.CARDISSUER = CARDISSUER;
    }

    /**
     * @return the NUMCODE
     */
    public String getNUMCODE() {
        return NUMCODE;
    }

    /**
     * @param NUMCODE the NUMCODE to set
     */
    public void setNUMCODE(String NUMCODE) {
        this.NUMCODE = NUMCODE;
    }


}

主要方法应该是：

  /**
     * @param args the command line arguments
     * @throws javax.xml.bind.JAXBException
     */
    public static void main(String[] args) throws JAXBException {
        // TODO code application logic here
        try {

            File file = new File("file.xml");

            if (file.exists()) {
                JAXBContext jaxbContext = JAXBContext.newInstance(CC5Response.class);

                Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
                CC5Response response = (CC5Response) jaxbUnmarshaller.unmarshal(file);

                if (response != null) {
                    System.out.println("*************" + response.getAuthCode());
                    System.out.println("*************" + response.getErrMsg());
                    System.out.println("*************" + response.getGroupId());
                    System.out.println("*************" + response.getOrderId());
                    System.out.println("*************" + response.getResponse());
                    //you can get any field from Exta class 
                    System.out.println("*************" + response.getExtra());
                }
            }
        } catch (JAXBException e) {
            e.printStackTrace();
        }
    }

JAXB XML Unmarshaller错误。获取所有Object的空值

1 个答案: