我一直在使用Moxy成功地将复杂的xml类型编组/解组成更简单的java结构。特别是,我正在处理ISO Pain 20022消息,并且XML中存在许多我们不关心的字段:
<?xml version="1.0" encoding="UTF-8"?>
<iso:Document xmlns:iso="urn:iso:std:iso:20022:tech:xsd:pain.001.001.04" >
<iso:CstmrCdtTrfInitn>
<iso:GrpHdr>
<iso:MsgId>OriginalMessageID</iso:MsgId>
<iso:CreDtTm>2013-05-29T20:02:22.615</iso:CreDtTm>
<iso:NbOfTxs>1</iso:NbOfTxs>
<iso:InitgPty/>
</iso:GrpHdr>
<iso:PmtInf>
...
</iso:Document>
这是我的oxm绑定文件:
<xml-element java-attribute="messageId" xml-path="iso:CstmrCdtTrfInitn/iso:GrpHdr/iso:MsgId/text()"/>
<xml-element java-attribute="creationDateTime" xml-path="iso:CstmrCdtTrfInitn/iso:GrpHdr/iso:CreDtTm/text()"/>
我需要生成额外的两个xml元素 iso:NbOfTxs 和 iso:InitgPty ,它们总是相同的,并且java上没有相应的属性正在生成xml的类。
这可能吗?
感谢。
答案 0 :(得分:0)
我还在研究这个用例。下面是我目前能够生成的XML(我发现它不正确)。
<强>输出强>
<?xml version="1.0" encoding="UTF-8"?>
<iso:Document xmlns:iso="urn:iso:std:iso:20022:tech:xsd:pain.001.001.04">
<iso:CstmrCdtTrfInitn>
<iso:GrpHdr>
<iso:MsgId>OriginalMessageID</iso:MsgId>
</iso:GrpHdr>
</iso:CstmrCdtTrfInitn>
<iso:CstmrCdtTrfInitn>
<iso:GrpHdr>
<iso:CreDtTm>2013-05-29T20:02:22.615</iso:CreDtTm>
<iso:NbOfTxs>1</iso:NbOfTxs>
<iso:InitgPty/>
</iso:GrpHdr>
</iso:CstmrCdtTrfInitn>
</iso:Document>
<强>文档强>
以下是您的域模型的简化版本:
import java.util.Date;
public class Document {
private String messageId;
private Date creationDateTime;
}
<强> oxm.xml 强>
在下面的元数据中,我试图使用XmlAdapter
将Date
属性转换为更复杂的对象,可以写出其他2个XML元素。
<?xml version="1.0"?>
<xml-bindings
xmlns="http://www.eclipse.org/eclipselink/xsds/persistence/oxm"
package-name="forum16839007">
<xml-schema
namespace="urn:iso:std:iso:20022:tech:xsd:pain.001.001.04"
element-form-default="QUALIFIED">
<xml-ns prefix="iso" namespace-uri="urn:iso:std:iso:20022:tech:xsd:pain.001.001.04"/>
</xml-schema>
<java-types>
<java-type name="Document" xml-accessor-type="FIELD">
<xml-root-element name="Document"/>
<java-attributes>
<xml-element java-attribute="messageId" xml-path="iso:CstmrCdtTrfInitn/iso:GrpHdr/iso:MsgId/text()"/>
<xml-element java-attribute="creationDateTime" xml-path=".">
<xml-java-type-adapter value="forum16839007.ExtraAdapter"/>
</xml-element>
</java-attributes>
</java-type>
</java-types>
</xml-bindings>
<强> ExtraAdapter 强>
以下XmlAdapter
将Date
转换为更复杂的对象。
import java.util.Date;
import javax.xml.bind.annotation.adapters.XmlAdapter;
import org.eclipse.persistence.oxm.annotations.XmlPath;
public class ExtraAdapter extends XmlAdapter<ExtraAdapter.Extra, Date>{
public static class Extra {
@XmlPath("iso:CstmrCdtTrfInitn/iso:GrpHdr/iso:CreDtTm/text()")
public Date creationDateTime;
@XmlPath("iso:CstmrCdtTrfInitn/iso:GrpHdr/iso:NbOfTxs/text()")
public final int NbOfTxs = 1;
@XmlPath("iso:CstmrCdtTrfInitn/iso:GrpHdr/iso:InitgPty/text()")
public final Empty initgPty = new Empty();
}
public static class Empty {
}
@Override
public Date unmarshal(Extra extra) throws Exception {
return extra.creationDateTime;
}
@Override
public Extra marshal(Date date) throws Exception {
Extra extra = new Extra();
extra.creationDateTime = date;
return extra;
}
}
<强>演示强>
import java.io.File;
import java.util.*;
import javax.xml.bind.*;
import org.eclipse.persistence.jaxb.JAXBContextProperties;
public class Demo {
public static void main(String[] args) throws Exception {
Map<String, Object> properties = new HashMap<String, Object>(1);
properties.put(JAXBContextProperties.OXM_METADATA_SOURCE, "forum16839007/oxm.xml");
JAXBContext jc = JAXBContext.newInstance(new Class[] {Document.class}, properties);
Unmarshaller unmarshaller = jc.createUnmarshaller();
File xml = new File("src/forum16839007/input.xml");
Document document = (Document) unmarshaller.unmarshal(xml);
Marshaller marshaller = jc.createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
marshaller.marshal(document, System.out);
}
}