读取这样一个xml文件的过程，详细的。在线等啊，谢谢了！急啊！

<?xml version="1.0" encoding="UTF-8"?>

<OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd">

<responseDate>2010-10-14T00:56:29Z</responseDate>
<request verb="ListRecords" resumptionToken="!1900-01-01!!oai_dc!0">http://www.doaj.org/oai</request>

<ListRecords>
<record>
<header>
<identifier>oai:doaj.org:1582-6260</identifier>
<datestamp>2010-10-05T11:05:29Z</datestamp>
</header>
<metadata>
<oai_dc:dc xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

  xmlns:dc="http://purl.org/dc/elements/1.1/"

  xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"

  xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/

  http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:title>Revista Economică</dc:title>
  <dc:identifier>http://economice.ulbsibiu.ro/rom/profesori/publicatii/revista_economica.php</dc:identifier>
  <dc:identifier>issn: 1582-6260</dc:identifier>
  <dc:publisher>Lucian Blaga University of Sibiu</dc:publisher>
  <dc:date>2008</dc:date>
  <dc:language>English</dc:language>
  <dc:language>Romanian </dc:language>
  <dc:subject>economics</dc:subject>
  <dc:subject>finance</dc:subject>
  <dc:subject>microeconomics</dc:subject>
  <dc:subject>macroeconomics</dc:subject>
  <dc:subject>management </dc:subject>
  <dc:subject>DoajSubjectTerm: Economics</dc:subject>
  <dc:subject>LCC: HD72-88</dc:subject>
  <dc:subject>LCC: TX1-1110</dc:subject>
  <dc:subject>LCC: HB1-3840</dc:subject>
  <dc:subject>LCC: HJ9-9940</dc:subject>
  <dc:subject>LCC: HC10-1085</dc:subject>
</oai_dc:dc>
</metadata>
</record>

<record>
<header>
<identifier>oai:doaj.org:1112-5209</identifier>
<datestamp>2010-05-12T20:19:24Z</datestamp>
</header>
<metadata>
<oai_dc:dc xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

  xmlns:dc="http://purl.org/dc/elements/1.1/"

  xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"

  xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/

  http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:title>Journal of Electrical Systems</dc:title>
  <dc:identifier>http://journal.esrgroups.org/jes</dc:identifier>
  <dc:identifier>issn: 1112-5209</dc:identifier>
  <dc:publisher>ESRGroups</dc:publisher>
  <dc:date>2005</dc:date>
  <dc:language>English</dc:language>
  <dc:subject>power electronics</dc:subject>
  <dc:subject>electric drives</dc:subject>
  <dc:subject>energy economics</dc:subject>
  <dc:subject>electrical machines</dc:subject>
  <dc:subject>artificial intelligence in power systems</dc:subject>
  <dc:subject>DoajSubjectTerm: Electrical and Nuclear Engineering</dc:subject>
  <dc:subject>LCC: TK1-9971</dc:subject>
</oai_dc:dc>
</metadata>
</record>

<record>
<header>
<identifier>oai:doaj.org:1937-819X</identifier>
<datestamp>2010-05-12T20:19:24Z</datestamp>
</header>
<metadata>
<oai_dc:dc xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

  xmlns:dc="http://purl.org/dc/elements/1.1/"

  xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"

  xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/

  http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:title>The Internet Journal of Head and Neck Surgery</dc:title>
  <dc:identifier>http://www.ispub.com/ostia/index.php?xmlFilePath=journals/ijhns/front.xml</dc:identifier>
  <dc:identifier>issn: 1937-819X</dc:identifier>
  <dc:publisher>Internet Scientific Publications, LLC</dc:publisher>
  <dc:date>2007</dc:date>
  <dc:language>English</dc:language>
  <dc:subject>medical sciences</dc:subject>
  <dc:subject>surgery</dc:subject>
  <dc:subject>DoajSubjectTerm: Surgery</dc:subject>
  <dc:subject>LCC: RD1-811</dc:subject>
  <dc:subject>LCC: RD701-811</dc:subject>
</oai_dc:dc>
</metadata>
</record>

<record>
<header>
<identifier>oai:doaj.org:2178-4442</identifier>
<datestamp>2010-09-06T14:51:45Z</datestamp>
</header>
<metadata>
<oai_dc:dc xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

  xmlns:dc="http://purl.org/dc/elements/1.1/"

  xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"

  xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/

  http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:title>Poíesis Pedagógica</dc:title>
  <dc:identifier>http://www.revistas.ufg.br/index.php/poiesis/index</dc:identifier>
  <dc:identifier>issn: 2178-4442</dc:identifier>
  <dc:publisher>Universidade Federal de Goiás</dc:publisher>
  <dc:date>2003</dc:date>
  <dc:language>Portuguese</dc:language>
  <dc:language>Spanish</dc:language>
  <dc:subject>education</dc:subject>
  <dc:subject>pedagogy</dc:subject>
  <dc:subject>teaching</dc:subject>
  <dc:subject>DoajSubjectTerm: Education</dc:subject>
  <dc:subject>LCC: L7-991</dc:subject>
  <dc:subject>LCC: LA5-2396</dc:subject>
  <dc:subject>LCC: LB5-3640</dc:subject>
  <dc:subject>LCC: LC8-6691</dc:subject>
</oai_dc:dc>
</metadata>
</record>



读取这样一个xml文件的过程，详细的。在线等啊，谢谢了！急啊！
要求读到那列都可以判断的！

具体什么意思？