Java 在xml解析中按标记名获取元素,不包括某些父级的子级
我有一个正在解析的xml文件。虽然有些标记名出现了多次,但都是在不同的父名称下出现的。我知道我想忽略哪位家长的孩子。我该怎么做Java 在xml解析中按标记名获取元素,不包括某些父级的子级,java,xml,Java,Xml,我有一个正在解析的xml文件。虽然有些标记名出现了多次,但都是在不同的父名称下出现的。我知道我想忽略哪位家长的孩子。我该怎么做 <sub-article id="S01" article-type="translation" xml:lang="pt"> <front-stub> <article-categories> <subj-group subj-group-type="heading">
<sub-article id="S01" article-type="translation" xml:lang="pt">
<front-stub>
<article-categories>
<subj-group subj-group-type="heading">
<subject>Artigos Originais</subject>
</subj-group>
</article-categories>
<title-group>
<article-title>
Prevalência de deficiência nutricional em pacientes com
tuberculose pulmonar
<xref ref-type="fn" rid="fn02">*</xref>
</article-title>
</title-group>
</front-stub>
</article-categories>
</sub-article>
.....
.....
<article-meta>
<article-id pub-id-type="pmid">24068270</article-id>
<article-id pub-id-type="pmc">4075858</article-id>
<article-id pub-id-type="publisher-id">S1806-37132013000400012</article-id>
<article-id pub-id-type="doi">10.1590/S1806-37132013000400012</article-id>
<article-categories>
<subj-group subj-group-type="heading">
<subject>Original Articles</subject>
</subj-group>
</article-categories>
<title-group>
<article-title>
Prevalence of nutritional deficiency in patients with
pulmonary tuberculosis
<xref ref-type="fn" rid="fn01">*</xref>
</article-title>
</title-group>
<article-meta>
只需在“子文章”节点下搜索“标题组”节点:
List allTitleGroupNodes=new ArrayList();
NodeList subticlenodes=document.getElementsByTagName(“子文章”);
对于(int i=0;i
(旁白:
NodeList的糟糕界面是我最讨厌在标准Java中处理XML的地方之一。)使用XPath有两种方法来实现它:
包括目标元素名称
排除目标元素名称
就我个人而言,我更喜欢第一个,因为它更显式,并且总是面向不同的XML文件
溶液1夹杂物
使用XPath仅选择
下的元素:
爪哇:
解决方案2排除
如果元素在
下,则使用XPath排除这些元素。我假设XML根元素是
(如果不是这样,请证明代码正确):
爪哇
NodeList titleNodeList = document.getElementsByTagName("title-group");
List<Node> allTitleGroupNodes = new ArrayList<>();
NodeList subArticleNodes = document.getElementsByTagName("sub-article");
for (int i = 0; i < subArticleNodes.getLength(); i++) {
NodeList titleNodes = subArticleNodes.item(i).getElementsByTagName("title-group");
for (int j = 0; j < titleNodes.getLength(); j++) {
allTitleGroupNodes.add(titleNodes.item(j));
}
}
//article-meta//title-group
XPath xPath = XPathFactory.newInstance().newXPath();
XPathExpression expr = xPath.compile("//article-meta//title-group");
NodeList titleNodes = (NodeList) expr.evaluate(document, XPathConstants.NODESET);
/article/*[not(self::sub-article)]//title-group
XPath xPath = XPathFactory.newInstance().newXPath();
XPathExpression expr = xPath.compile("/article/*[not(self::sub-article)]//title-group");
NodeList titleNodes = (NodeList) expr.evaluate(document, XPathConstants.NODESET);