处理xml平面文件中的内部元素列表的Beanio流
处理xml平面文件中的内部元素列表的Beanio流
提问于 2019-08-29 11:12:52
我对beanio很陌生。有人能帮我一下吗。我正在尝试处理输入文件，该文件如下所示，其中数据元素中存在许多Item元素：
<?xml version="1.0" encoding="windows-1252"?>
<ROOT xmlns="http://www.post.ch/schemas/dfu/2006/20/Report11">
<Sender>
<Provider>
<Data>
<Item SendingID="314" ItemID="996099999902916713" IdentCode="996099999902916713" AdrZ1="Meier" AdrZ2="" AdrZ3="" AdrZ4="Dorfweg" AdrZ5="6" AdrZ6="4117" AdrZ7="Burg im Leimental" DFUTransferDateTime="2019-07-18T13:24:56" ItemWeight="480" EventDateTime="2019-07-22T04:13:59" EventNumber="9209" EventDescription="Ordre voisin souhaité" EventNumber_Sub="" Event_SubDescription="" EventZipCode="303001" PrZl="SAZU" DeliveredTo="" TrackAndTrace="https://service.post.ch/EasyTrack/secure/GKDirectSearch.do?formattedParcelCodes=996099999902916713;&lang=fr" Status="31" StatusDescription="Prêt pour la distribution" ExpectedDeliveryDate="27.07.19" DeadlinePickup="" />
<Item SendingID="313" ItemID="996099999902916585" IdentCode="996099999902916585" AdrZ1="Müllerer" AdrZ2="" AdrZ3="" AdrZ4="Gärischstrasse" AdrZ5="27" AdrZ6="4512" AdrZ7="Bellach" DFUTransferDateTime="2019-07-17T13:51:23" ItemWeight="1080" EventDateTime="2019-07-22T07:32:59" EventNumber="4000" EventDescription="Distribué" EventNumber_Sub="" Event_SubDescription="" EventZipCode="462070" PrZl="" DeliveredTo=" " TrackAndTrace="https://service.post.ch/EasyTrack/secure/GKDirectSearch.do?formattedParcelCodes=996099999902916585;&lang=fr" Status="61" StatusDescription="Distribué" ExpectedDeliveryDate="22.07.19" DeadlinePickup="" />
</Data>
</Provider>
</Sender>
</ROOT>我在beanio xml中的流如下所示：
<stream name="swisspost" format="xml" xmlName="ROOT" xmlNamespace="http://www.post.ch/schemas/dfu/2006/20/Report11">
<record name="shippingData" xmlName="Sender" class="com.test.eventproc.carrier.data.ShippingDataDO">
<property name="carrierMoniker" value="swisspost"/>
<segment name="Provider">
<segment name="Data">
<segment name="Item">
<field name="trackingNumber" xmlName="IdentCode" xmlType="attribute"></field>
</segment>
<segment name="shippingDetail" xmlName="Item" xmlType="element" class="com.test.eventproc.carrier.data.ShippingDetailDO">
<field name="trackingNumber" xmlName="IdentCode" xmlType="attribute"></field>
<field name="eventCode" xmlName="EventNumber" xmlType="attribute"></field>
<field name="eventDate" xmlName="EventDateTime" xmlType="attribute"></field>
<field name="eventName" xmlName="EventDescription" xmlType="attribute"></field>
</segment>
</segment>
</segment>
</record>
</stream>按照我上面的流，只有第一个Item元素值被处理并且程序退出。有没有办法，我可以处理所有的项目元素？下面是用于填充BeanReader对象的代码：
StreamFactory factory = StreamFactory.newInstance();
factory.loadResource("mapping.xml");//mapping.xml is my bean-io mapping file.
File originalFile = convert(file);//file is the input xml flat file
FileInputStream inputStream = new FileInputStream(originalFile);
BeanReader reader = factory.createReader(streamName, new InputStreamReader(inputStream));
Object record;
List<ShippingDataDO> shippingDataDOs = new ArrayList<ShippingDataDO>();
while ((record = reader.read()) != null) {
ShippingDataDO shippingDataDO = (ShippingDataDO) record;
shippingDataDOs.add(shippingDataDO);
}我试着映射xml，如下所示。但是，现在没有从输入平面xml文件中检索记录。
<stream name="swisspost" format="xml" xmlName="ROOT" xmlNamespace="http://www.post.ch/schemas/dfu/2006/20/Report11">
<record name="Sender">
<segment name="Provider">
<segment name="Data">
<segment name="shippingData" xmlName="Item" maxOccurs="unbounded" collection="list" class="com.narvar.carrier.utilities.pojo.ShippingDataDO">
<property name="carrierMoniker" value="swisspost"/>
<field name="trackingNumber" xmlName="IdentCode" xmlType="attribute"></field>
</segment>
<segment name="shippingDetail" xmlName="Item" xmlType="element" maxOccurs="unbounded" class="com.narvar.carrier.utilities.pojo.ShippingDetailDO" collection="list">
<field name="trackingNumber" xmlName="IdentCode" xmlType="attribute"></field>
<field name="eventCode" xmlName="EventNumber" xmlType="attribute"></field>
<field name="eventDate" xmlName="EventDateTime" xmlType="attribute"></field>
<field name="eventName" xmlName="EventDescription" xmlType="attribute"></field>
</segment>
</segment>
</segment>
</record>
</stream>回答 1
Stack Overflow用户
发布于 2019-08-29 16:31:04
您只需要对映射文件做一个小的调整。您必须告诉BeanIO，shippingDetail段是一个可重复的段，方法是将maxOccurs属性设置为unbounded，并将collection属性设置为list。
有关更多细节，请参见重复段文档，实质是：
与重复字段类似，BeanIO支持重复段，这些片段可以绑定到bean对象的集合。 在映射文件中，为了将段绑定到集合，只需将其集合属性设置为java.util.Collection或java.util.Map子类的完全限定类名，或设置为集合类型别名之一 重复段可以使用minOccurs和maxOccurs属性声明出现的次数。如果未声明，minOccurs将默认为1，而maxOccurs将默认为minOccurs值或1，两者以较大者为准。
然后，您的shippingDetail段变成：
<segment name="shippingDetail" xmlName="Item" xmlType="element" maxOccurs="unbounded"
class="com.test.eventproc.carrier.data.ShippingDetailDO" collection="list">
<field name="trackingNumber" xmlName="IdentCode" xmlType="attribute"></field>
<field name="eventCode" xmlName="EventNumber" xmlType="attribute"></field>
<field name="eventDate" xmlName="EventDateTime" xmlType="attribute"></field>
<field name="eventName" xmlName="EventDescription" xmlType="attribute"></field>
</segment>希望能帮上忙！
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原文链接：
https://stackoverflow.com/questions/57708916
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