如何使用java从xml文件中提取细节？ [英] How to extract details from the xml files using java?

问题描述

我有以下类型的XML文件，

I have the following type of XML file,

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE eSummaryResult PUBLIC "-//NLM//DTD eSummaryResult, 29 October 2004//EN" "http://www.ncbi.nlm.nih.gov/entrez/query/DTD/eSummary_041029.dtd">
<eSummaryResult>
<DocSum>
    <Id>224589801</Id>
    <Item Name="Caption" Type="String">NC_000010</Item>
    <Item Name="Title" Type="String">Homo sapiens chromosome 10, GRCh37.p10 Primary Assembly</Item>
    <Item Name="Extra" Type="String">gi|224589801|gnl|ASM:GCF_000001305|10|ref|NC_000010.10||gpp|GPC_000000034.1||gnl|NCBI_GENOMES|10[224589801]</Item>
    <Item Name="Gi" Type="Integer">224589801</Item>
    <Item Name="CreateDate" Type="String">2002/08/29</Item>
    <Item Name="UpdateDate" Type="String">2012/10/30</Item>
    <Item Name="Flags" Type="Integer">544</Item>
    <Item Name="TaxId" Type="Integer">9606</Item>
    <Item Name="Length" Type="Integer">135534747</Item>
    <Item Name="Status" Type="String">live</Item>
    <Item Name="ReplacedBy" Type="String"/>
    <Item Name="Comment" Type="String"><![CDATA[  ]]></Item>
</DocSum>

</eSummaryResult>

如何从node =Item中提取详细信息，具体取决于它的名称值？并且使用标准的java dom xml或更好地使用任何其他xml解析器库是为了这个目的吗？

How to extract the details from node="Item" based on the name value it has? And also is it good to use the standard java dom xml or better to use any other xml parser library for this purpose?

推荐答案

我建议使用StAX，试试这个（javax.xml.stream。*）

I suggest StAX, try this (javax.xml.stream.*)

    XMLInputFactory f = XMLInputFactory.newInstance();
    XMLStreamReader rdr = f.createXMLStreamReader(new FileReader("test.xml"));
    while (rdr.hasNext()) {
        if (rdr.next() == XMLStreamConstants.START_ELEMENT) {
            if (rdr.getLocalName().equals("Item")) {
                System.out.println(rdr.getAttributeValue("", "Name"));
                System.out.println(rdr.getElementText());
            }
        }
    }

StAX必须始终是第一个需要考虑的事情。请参阅 http://en.wikipedia.org/wiki/StAX ，了解原因

StAX must be always the first thing to consider. See http://en.wikipedia.org/wiki/StAX you will know why

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