pdfのメタデータを変更するXMP

Question

iTextなどのライブラリを使用してpdfの既存のメタデータXMPを変更したいと思います。

は私がcom.itextpdf.text.pdf.PdfReader.getMetadata（）でXMP文字列を取得 我々は、例えば、XMP

<?xpacket begin="" id="W5M0MpCehiHzreSzNTczkc9d"?> 
<x:xmpmeta xmlns:x="adobe:ns:meta/" x:xmptk="Adobe XMP Core 5.2-c001 63.139439, 2010/09/27-13:37:26  "> 
    <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"> 
     <rdf:Description rdf:about="" 
      xmlns:dc="http://purl.org/dc/elements/1.1/"> 
     <dc:format>application/pdf</dc:format> 
     <dc:identifier>10.1016/j.aipprr.2017.03.003</dc:identifier> 
     <dc:title> 
      <rdf:Alt> 
       <rdf:li xml:lang="x-default">Prólogo</rdf:li> 
      </rdf:Alt> 
     </dc:title> 
     <dc:creator> 
      <rdf:Seq> 
       <rdf:li>Rolando Díaz-Loving</rdf:li> 
      </rdf:Seq> 
     </dc:creator> 
     <dc:description> 
      <rdf:Alt> 
       <rdf:li xml:lang="x-default">Acta de Investigación Psicológica , 7 (2017) 2559. doi:10.1016/j.aipprr.2017.03.003</rdf:li> 
      </rdf:Alt> 
     </dc:description> 
     <dc:publisher> 
      <rdf:Bag> 
       <rdf:li>Universidad Nacional Autónoma de México, Facultad de Psicología</rdf:li> 
      </rdf:Bag> 
     </dc:publisher> 
     </rdf:Description> 
     <rdf:Description rdf:about="" 
      xmlns:prism="http://prismstandard.org/namespaces/basic/3.0/"> 
     <prism:aggregationType>journal</prism:aggregationType> 
     <prism:publicationName>Acta de Investigación Psicológica </prism:publicationName> 
     <prism:copyright>© 2017 Universidad Nacional Autónoma de México, Facultad de Psicología. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).</prism:copyright> 
     <prism:issn>2007-4719</prism:issn> 
     <prism:volume>7</prism:volume> 
     <prism:number>1</prism:number> 
     <prism:coverDisplayDate>April 2017</prism:coverDisplayDate> 
     <prism:pageRange>2559</prism:pageRange> 
     <prism:startingPage>2559</prism:startingPage> 
     <prism:doi>10.1016/j.aipprr.2017.03.003</prism:doi> 
     <prism:url>http://dx.doi.org/10.1016/j.aipprr.2017.03.003</prism:url> 
     </rdf:Description> 
     <rdf:Description rdf:about="" 
      xmlns:crossmark="http://crossref.org/crossmark/1.0/"> 
     <crossmark:MajorVersionDate>2010-04-23</crossmark:MajorVersionDate> 
     <crossmark:CrossmarkDomainExclusive>true</crossmark:CrossmarkDomainExclusive> 
     <crossmark:DOI>10.1016/j.aipprr.2017.03.003</crossmark:DOI> 
     <crossmark:CrossMarkDomains> 
      <rdf:Seq> 
       <rdf:li>elsevier.com</rdf:li> 
       <rdf:li>sciencedirect.com</rdf:li> 
      </rdf:Seq> 
     </crossmark:CrossMarkDomains> 
     </rdf:Description> 
     <rdf:Description rdf:about="" 
      xmlns:jav="http://www.niso.org/schemas/jav/1.0/"> 
     <jav:journal_article_version>VoR</jav:journal_article_version> 
     </rdf:Description> 
     <rdf:Description rdf:about="" 
      xmlns:pdfx="http://ns.adobe.com/pdfx/1.3/"> 
     <pdfx:ElsevierWebPDFSpecifications>6.5</pdfx:ElsevierWebPDFSpecifications> 
     <pdfx:doi>10.1016/j.aipprr.2017.03.003</pdfx:doi> 
     <pdfx:robots>noindex</pdfx:robots> 
     <pdfx:CrossmarkMajorVersionDate>2010-04-23</pdfx:CrossmarkMajorVersionDate> 
     <pdfx:CrossmarkDomainExclusive>true</pdfx:CrossmarkDomainExclusive> 
     <pdfx:CrossMarkDomainsↂ005B1ↂ005D>sciencedirect.com</pdfx:CrossMarkDomainsↂ005B1ↂ005D> 
     <pdfx:CrossMarkDomainsↂ005B2ↂ005D>elsevier.com</pdfx:CrossMarkDomainsↂ005B2ↂ005D> 
     <pdfx:CrossMarkDomains> 
      <rdf:Seq> 
       <rdf:li>sciencedirect.com</rdf:li> 
       <rdf:li>elsevier.com</rdf:li> 
      </rdf:Seq> 
     </pdfx:CrossMarkDomains> 
     </rdf:Description> 
     <rdf:Description rdf:about="" 
      xmlns:xmp="http://ns.adobe.com/xap/1.0/"> 
     <xmp:CreatorTool>Elsevier</xmp:CreatorTool> 
     <xmp:ModifyDate>2017-05-25T20:23:38-05:00</xmp:ModifyDate> 
     <xmp:CreateDate>2017-05-03T16:07:41Z</xmp:CreateDate> 
     <xmp:MetadataDate>2017-05-25T20:23:38-05:00</xmp:MetadataDate> 
     </rdf:Description> 
     <rdf:Description rdf:about="" 
      xmlns:xmpRights="http://ns.adobe.com/xap/1.0/rights/"> 
     <xmpRights:Marked>True</xmpRights:Marked> 
     </rdf:Description> 
     <rdf:Description rdf:about="" 
      xmlns:pdf="http://ns.adobe.com/pdf/1.3/"> 
     <pdf:Trapped>True</pdf:Trapped> 
     <pdf:Producer>Acrobat Distiller 9.0.0 (Windows)</pdf:Producer> 
     <pdf:Keywords/> 
     </rdf:Description> 
     <rdf:Description rdf:about="" 
      xmlns:xmpMM="http://ns.adobe.com/xap/1.0/mm/"> 
     <xmpMM:DocumentID>uuid:9d0cc73b-66d9-4125-9685-0f38e1653c8b</xmpMM:DocumentID> 
     <xmpMM:InstanceID>uuid:a666df63-92f4-44d1-8d4a-4a61bc95b979</xmpMM:InstanceID> 
     </rdf:Description> 
     <rdf:Description rdf:about="" 
      xmlns:ali="http://www.niso.org/schemas/ali/1.0/"> 
     <ali:license_ref> 
      <rdf:Bag> 
       <rdf:li rdf:parseType="Resource"> 
        <ali:uri>http://creativecommons.org/licenses/by-nc-nd/4.0/</ali:uri> 
       </rdf:li> 
      </rdf:Bag> 
     </ali:license_ref> 
     </rdf:Description> 
    </rdf:RDF> 
</x:xmpmeta>      
<?xpacket end="w"?> 

を持っているそして今、私は現在のタイムスタンプが、私と<xmp:ModifyDate>2017-05-25T20:23:38-05:00</xmp:ModifyDate>を変更したいの下には実際に文字通りの文字列の解析をせずにそれを行う方法は実際知られていません。 xmpを変更できるライブラリはありますか？

Answer 1

最後に、私はiTextライブラリからXmpReader.replaceNodeを使用しました。