我正在尝试使用 Java 中的 JiBX 解析 spdx 文件。我只想解析一些元素，而不是文件中的所有元素，而不是按顺序解析，并且某些元素重复。我要解析的一些元素是：<creator>、<packageDownloadLocation> 或<checksumValue>。我遇到的问题是，解析后对象的属性为null。对象本身不为空。
你能帮我么？
绑定 XML 文件是：
<binding>
<mapping name="RDF" class="com.transfer.SpdxTransferObject" ordered="false" flexible="true">
<namespace uri="http://www.w3.org/1999/02/22-rdf-syntax-ns#" prefix="rdf" default="all"/>
<namespace uri="http://usefulinc.com/ns/doap#" prefix="j.0" />
<namespace uri ="http://www.w3.org/2000/01/rdf-schema#" prefix="rdfs" />
<namespace uri="http://spdx.org/rdf/terms#" prefix="noPrefix"/>
<value name="creator" field="mCreator" get-method="getCreator" set-method="setCreator" default="none"/>
</mapping>
SpdxTransferObject 是一个带有 setter 和 getter 的简单 Java bean：
public class SpdxTO implements Serializable
{
/** Default serial version ID */
private static final long serialVersionUID = 1L;
private String mCreator;
private String mPackageDownloadLocation;
private String mChecksumValue>;
/* getters and setters */
......
}
Java代码是：
public class ParseSpdxFile
{
/** Our logger */
private static Log sLog = LoggerFactory.create();
public static SpdxTransferObject parseFromFile(final File pFile) throws ValidationException
{
sLog.debug("Parsing the Spdx file");
SpdxTO data = null;
JiBXFileHandler handler;
try
{
handler = new JiBXFileHandler(BindingDirectory.getFactory(SpdxTransferObject.class));
data = (SpdxTransferObject) handler.loadFromXML(pFile);
}
catch (JiBXException e)
{
throw new ValidationException(e);
}
catch (Exception e)
{
throw new ValidationException(e);
}
return data;
}
}
public class JiBXFileHandler
{
private final IBindingFactory mBfact;
public JiBXFileHandler(final IBindingFactory pBfact)
{
mBfact = pBfact;
}
public Object loadFromXML(final File pFile) throws Exception
{
FileInputStream in = null;
try
{
IUnmarshallingContext uctx = mBfact.createUnmarshallingContext();
in = new FileInputStream(pFile);
return uctx.unmarshalDocument(in, null);
}
finally
{
IOUtils.closeQuietly(in);
}
}
}
spdx 文件如下：
<rdf:RDF
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:j.0="http://usefulinc.com/ns/doap#"
xmlns="http://spdx.org/rdf/terms#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#">
<SpdxDocument rdf:about="http://www.spdx.org/tools#SPDXANALYSIS">
<reviewed>
<Review>
<rdfs:comment>This is just an example.</rdfs:comment>
<reviewDate>2010-02-10T00:00:00Z</reviewDate>
<reviewer>Person: Joe Reviewer</reviewer>
</Review>
</reviewed>
<hasExtractedLicensingInfo>
<ExtractedLicensingInfo rdf:nodeID="A0">
<licenseText>license text</licenseText>
<licenseId>LicenseRef-3</licenseId>
</ExtractedLicensingInfo>
</hasExtractedLicensingInfo>
<specVersion>SPDX-0.8</specVersion>
<describesPackage>
<Package rdf:about="http://www.spdx.org/tools#SPDXANALYSIS?package">
<licenseDeclared>
<ConjunctiveLicenseSet>
<member>
<License rdf:about="http://spdx.org/licenses/MPL-1.1">
<licenseId>MPL-1.1</licenseId>
</License>
</member>
<member rdf:nodeID="A0"/>
<member>
<ExtractedLicensingInfo rdf:nodeID="A1">
<licenseText>License text 2</licenseText>
<licenseId>LicenseRef-2</licenseId>
</ExtractedLicensingInfo>
</member>
<member>
<ExtractedLicensingInfo rdf:nodeID="A2">
<licenseText>license text 3</licenseText>
<licenseId>LicenseRef-4</licenseId>
</ExtractedLicensingInfo>
</member>
<member>
<ExtractedLicensingInfo rdf:nodeID="A3">
<licenseText>licence text 4</licenseText>
<licenseId>LicenseRef-1</licenseId>
</ExtractedLicensingInfo>
</member>
<member>
<License rdf:about="http://spdx.org/licenses/Apache-2">
<licenseId>Apache-2</licenseId>
</License>
</member>
</ConjunctiveLicenseSet>
</licenseDeclared>
<packageDownloadLocation>http://www.spdx.org/tools</packageDownloadLocation>
<hasFile>
<File>
<copyrightText>Copyright 2010, 2011</copyrightText>
<licenseComments></licenseComments>
<licenseInfoInFile rdf:resource="http://spdx.org/licenses/Apache-2"/>
<licenseConcluded rdf:resource="http://spdx.org/licenses/Apache-2"/>
<fileType>SOURCE</fileType>
<checksum>
<Checksum>
<checksumValue>2fd4e1c67a2d28fced849ee1bb76e7391b93eb12</checksumValue>
<algorithm>SHA1</algorithm>
</Checksum>
</checksum>
<fileName>src/org/spdx/parser/Project.java</fileName>
</File>
</hasFile>
<licenseInfoFromFiles rdf:nodeID="A3"/>
<checksum>
<Checksum>
<checksumValue>2fd4e1c67a2d28fced849ee1bb76e7391b93eb12</checksumValue>
<algorithm>SHA1</algorithm>
</Checksum>
</checksum>
<sourceInfo>Version 1.0 of the SPDX Translator application</sourceInfo>
<packageVerificationCode>
<PackageVerificationCode>
<packageVerificationCodeValue>4e3211c67a2d28fced849ee1bb76e7391b93feba</packageVerificationCodeValue>
<packageVerificationCodeExcludedFile>SpdxTranslatorSpdx.txt</packageVerificationCodeExcludedFile>
<packageVerificationCodeExcludedFile>SpdxTranslatorSpdx.rdf</packageVerificationCodeExcludedFile>
</PackageVerificationCode>
</packageVerificationCode>
<packageFileName>spdxtranslator-1.0.zip</packageFileName>
<description>This utility..</description>
<licenseInfoFromFiles rdf:nodeID="A0"/>
<hasFile>
<File>
<artifactOf>
<j.0:Project>
<j.0:homepage>http://www.openjena.org/</j.0:homepage>
<j.0:name>Jena</j.0:name>
</j.0:Project>
</artifactOf>
<copyrightText>(c) Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 jena</copyrightText>
<licenseComments></licenseComments>
<licenseInfoInFile rdf:nodeID="A3"/>
<licenseConcluded rdf:nodeID="A3"/>
<fileType>ARCHIVE</fileType>
<checksum>
<Checksum>
<checksumValue>76e739c67a2d28fced849ee1bb76e7391b93eb12</checksumValue>
<algorithm>SHA1</algorithm>
</Checksum>
</checksum>
<fileName>Jenna-2.6.3/jena-2.6.3-sources.jar</fileName>
</File>
</hasFile>
<name>SPDX Translator</name>
<licenseInfoFromFiles rdf:nodeID="A1"/>
<licenseInfoFromFiles rdf:nodeID="A2"/>
<hasFile>
<File>
<artifactOf>
<j.0:Project rdf:about="http://svn.apache.org/repos/asf/commons/proper/lang/trunk/doap_lang.rdf">
<j.0:homepage>http://commons.apache.org/lang/</j.0:homepage>
<j.0:name>Apache Commons Lang</j.0:name>
</j.0:Project>
</artifactOf>
<copyrightText>Copyright 2001-2007</copyrightText>
<licenseComments></licenseComments>
<licenseInfoInFile rdf:resource="http://spdx.org/licenses/Apache-2"/>
<licenseConcluded rdf:resource="http://spdx.org/licenses/Apache-2"/>
<fileType>ARCHIVE</fileType>
<checksum>
<Checksum>
<checksumValue>76e739c67a2d28fced849ee1bb76e7391b93eb12</checksumValue>
<algorithm>SHA1</algorithm>
</Checksum>
</checksum>
<fileName>lib/commons-lang-2.3.zip</fileName>
</File>
</hasFile>
<copyrightText> Copyright 2010, 2011 Source </copyrightText>
<licenseComments>The declared license</licenseComments>
<licenseInfoFromFiles>
<License rdf:about="http://spdx.org/licenses/Apache-1">
<licenseId>Apache-1</licenseId>
</License>
</licenseInfoFromFiles>
<summary>SPDX Translator utility</summary>
<licenseInfoFromFiles rdf:resource="http://spdx.org/licenses/MPL-1.1"/>
<licenseInfoFromFiles rdf:resource="http://spdx.org/licenses/Apache-2"/>
<licenseConcluded>
<ConjunctiveLicenseSet>
<member rdf:resource="http://spdx.org/licenses/MPL-1.1"/>
<member rdf:nodeID="A1"/>
<member rdf:nodeID="A3"/>
<member rdf:nodeID="A2"/>
<member rdf:resource="http://spdx.org/licenses/Apache-2"/>
<member rdf:nodeID="A0"/>
<member rdf:resource="http://spdx.org/licenses/Apache-1"/>
</ConjunctiveLicenseSet>
</licenseConcluded>
</Package>
</describesPackage>
<hasExtractedLicensingInfo rdf:nodeID="A1"/>
<hasExtractedLicensingInfo rdf:nodeID="A3"/>
<creationInfo>
<CreationInfo>
<created>2010-02-03T00:00:00Z</created>
<rdfs:comment>This is an example of an SPDX spreadsheet format</rdfs:comment>
<creator>Person: Steven O'Neall</creator>
<creator>Company: Source Code Company</creator>
<creator>Tool: SourceCode-V1.2</creator>
</CreationInfo>
</creationInfo>
<hasExtractedLicensingInfo rdf:nodeID="A2"/>
<reviewed>
<Review>
<rdfs:comment>Another example reviewer.</rdfs:comment>
<reviewDate>2011-03-13T00:00:00Z</reviewDate>
<reviewer>Person: John Reviewer</reviewer>
</Review>
</reviewed>
</SpdxDocument>
</rdf:RDF>