java - 使用jaxb读取xml文档

Question

我正在尝试使用 jaxb 读取 xml，并尝试创建一个解析器。我对我构建 java bean 的方式及其中的注释有些怀疑。我知道我做错了，因为我遇到了非法注释错误。

关于如何编写 bean 和注释以允许 jax b 执行它并解析我的 xml，我能否获得一些帮助。

谢谢(很抱歉发了这么长的帖子，但希望它能对其他人有所帮助)

我的简化 xml 文档看起来像这样......

<WEB-ITM-EXT-REC>
   <ACTVTY-CODE>A</ACTVTY-CODE>
   <WEB-ITM-EXT-DATA>
     <ITEM-NO>93501250080</ITEM-NO>
     <PROMOTION-DETAILS>
       <PROMOTION-ID></PROMOTION-ID>
       <PROMOTION-START-DATE>0</PROMOTION-START-DATE>
       <PROMOTION-END-DATE>0</PROMOTION-END-DATE>
       <PROMOTION-PRICE>.00</PROMOTION-PRICE>
     </PROMOTION-DETAILS>
     <NORMAL-SELL-PRICES>
       <SELL-PRICE-EFFECTIVE-DATE-1>0</SELL-PRICE-EFFECTIVE-DATE-1>
       <SELL-PRICE-1>.00</SELL-PRICE-1>
       <SELL-PRICE-EFFECTIVE-DATE-2>0</SELL-PRICE-EFFECTIVE-DATE-2>
       <SELL-PRICE-2>.00</SELL-PRICE-2>
       <SELL-PRICE-EFFECTIVE-DATE-3>0</SELL-PRICE-EFFECTIVE-DATE-3>
       <SELL-PRICE-3>189.95</SELL-PRICE-3>
     </NORMAL-SELL-PRICES>
     <OUT-OF-STOCK-IND>Y</OUT-OF-STOCK-IND>
   </WEB-ITM-EXT-DATA>
 </WEB-ITM-EXT-REC>

这是我编写 java bean 的方式...

@XmlRootElement(name = "WEB-ITM-EXT-REC")
public class ItemDocuments {

    @XmlElement(name="ACTVTY-CODE")
    private String activityCode;

    @XmlElement(name="WEB-ITM-EXT-DATA")
    private List<ItemDocument> itemDocuments;

    public List<ItemDocument> getItemDocuments() {
        return itemDocuments;
    }

    public void setItemDocuments(List<ItemDocument> itemDocuments) {
        this.itemDocuments = itemDocuments;
    }

    public String getActivityCode() {
        return activityCode;
    }

    public void setActivityCode(String activityCode) {
        this.activityCode = activityCode;
    }
}

项目 bean

@XmlRootElement(name = "WEB-ITM-EXT-DATA")
@XmlAccessorType(XmlAccessType.FIELD)
public class ItemDocument {

    @XmlElement(name="ITEM-NO")
    private String itemNo;
    private PromotionDocument promotion;
    private SellPriceDocument sellPrice;
    @XmlElement(name="OUT-OF-STOCK-IND")
    private String outOfStockInd;  

        getters..
        setters...
}

Bean 售价

@XmlType
public class SellPriceDocument {

    @XmlElement(name="SELL-PRICE-EFFECTIVE-DATE-1")
    private String sellPriceEffectiveDateOne;
    @XmlElement(name="SELL-PRICE-1")
    private String sellPriceOne;
    @XmlElement(name="SELL-PRICE-EFFECTIVE-DATE-2")
    private String sellPriceEffectiveDateTwo;
    @XmlElement(name="SELL-PRICE-2")
    private String sellPriceTwo;
    @XmlElement(name="SELL-PRICE-EFFECTIVE-DATE-3")
    private String sellPriceEffectiveDateThree;
    @XmlElement(name="SELL-PRICE-3")
    private String sellPriceThree;

    getters..
    setters...
}

促销 bean

public class PromotionDocument {

    @XmlElement(name="PROMOTION-ID")
    private String promotionId;

    @XmlElement(name="PROMOTION-START-DATE")
    private String promotionStartDate;

    @XmlElement(name="PROMOTION-END-DATE")
    private String promotionEndDate;

    @XmlElement(name="PROMOTION-PRICE")
    private String promotionPrice;

   getters..
   setters...
}

Answer 1

默认情况下，JAXB 实现会将公共(public)属性视为已映射。这意味着默认情况下您应该注释属性:

@XmlRootElement(name = "WEB-ITM-EXT-REC")
public class ItemDocuments {

    private List<ItemDocument> itemDocuments;

    @XmlElement(name="WEB-ITM-EXT-DATA")
    public List<ItemDocument> getItemDocuments() {
        return itemDocuments;
    }

    public void setItemDocuments(List<ItemDocument> itemDocuments) {
        this.itemDocuments = itemDocuments;
    }

}

当您注释该字段时，您应该在类上指定 @XmlAccessorType(XmlAccessTypr.FIELD)。

@XmlRootElement(name = "WEB-ITM-EXT-REC")
@XmlAccessorType(XmlAccessType.FIELD)
public class ItemDocuments {

    @XmlElement(name="WEB-ITM-EXT-DATA")
    private List<ItemDocument> itemDocuments;

    public List<ItemDocument> getItemDocuments() {
        return itemDocuments;
    }

    public void setItemDocuments(List<ItemDocument> itemDocuments) {
        this.itemDocuments = itemDocuments;
    }