杰克逊解析 XML

Question

我正在尝试将 POJO 类序列化为 Amazon XML 格式以聚合来自服务的日期。

目标是有一个像这样的xml：

<ShipmentEventList>
    <ShipmentEvent>
        <ShipmentItemList>
            <ShipmentItem></ShipmentItem>
        </ShipmentItemList>
        <AmazonOrderId>AAAA</AmazonOrderId>
        <PostedDate>BBBB</PostedDate>
        <MarketplaceName>CCCC</MarketplaceName>
        <SellerOrderId>DDDD</SellerOrderId>
    </ShipmentEvent>
</ShipmentEventList>

这是我的 POJO 课程

装运事件列表

public class ShipmentEventList {

   @JacksonXmlElementWrapper(localName = "ShipmentEventList")
   @JacksonXmlProperty(localName = "ShipmentEvent")
   private List<ShipmentEvent> shipmentEventList;
}

装运事件

@JacksonXmlRootElement(localName = "ShipmentEvent")
public class ShipmentEvent {

    @JacksonXmlElementWrapper(localName = "ShipmentItemList")
    private List<ShipmentItem> shipmentItemList;

    @JacksonXmlProperty(localName = "AmazonOrderId")
    private String amazonOrderId;

    @JacksonXmlProperty(localName = "PostedDate")
    private String postedDate;

    @JacksonXmlProperty(localName = "MarketplaceName")
    private String marketplaceName;

    @JacksonXmlProperty(localName = "SellerOrderId")
    private String sellerOrderId;

}

不幸的是，由于我有序列化：

<ShipmentEventList>
    <ShipmentEventList>
        <ShipmentEvent>
            <AmazonOrderId>A</AmazonOrderId>
            <PostedDate>B</PostedDate>
            <MarketplaceName>C</MarketplaceName>
            <SellerOrderId>D</SellerOrderId>
        </ShipmentEvent>
        <ShipmentEvent>
            <AmazonOrderId>B</AmazonOrderId>
            <PostedDate>C</PostedDate>
            <MarketplaceName>D</MarketplaceName>
            <SellerOrderId>E</SellerOrderId>
        </ShipmentEvent>
    </ShipmentEventList>
</ShipmentEventList>

您能解释一下杰克逊的收藏系列化是如何运作的吗？

Answer 1

您需要将useWrapping 标志设置为false：

class ShipmentEventList {

    @JacksonXmlElementWrapper(useWrapping = false)
    @JacksonXmlProperty(localName = "ShipmentEvent")
    private List<ShipmentEvent> shipmentEventList;
}