我正在尝试用Java解析XML文档(第一次尝试这样做),我在Google上发现了许多提供示例的文章,但我真的不理解其中的一些代码,所以我想知道是否有人可以向我解释一些事情。我看到的主要例子来自:http://www.java-tips.org/java-se-tips/org.xml.sax/parsing-xml-with-a-simple-sax-document-handler-2.html。
我的主要问题主要来自代码的后半部分,特别是......的部分内容。
// we enter to element 'qName':
public void startElement(String uri, String localName,
String qName, Attributes attrs) throws SAXException {
if (qName.equals("purchase-order")) {
} else if (qName.equals("date")) {
} /* if (...)
} */ else {
throw new IllegalArgumentException("Element '" +
qName + "' is not allowed here");
}
}
// we leave element 'qName' without any actions:
public void endElement(String uri, String localName, String qName)
throws SAXException {
// do nothing;
}
...有人可以向我解释究竟是什么“字符串uri,字符串localName,字符串qName和属性attrs?我认为它们不是特定于代码的,因为我在一些例子中看过它们。另外(假设)这些是XML文件中的某种根元素,任何人都可以提供一些方向,告诉我如何使用它们以一种它将读取的方式解析位于.docx目录中的“document.xml.rels”文件并且只接受图像文件(不是标题,设置等)及其相关的关系ID#?(以下是我所指的简短文档)......
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
- <Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">
<Relationship Id="rId8" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/footer" Target="footer1.xml" />
<Relationship Id="rId13" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/theme" Target="theme/theme1.xml" />
<Relationship Id="rId3" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/settings" Target="settings.xml" />
<Relationship Id="rId7" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/header" Target="header1.xml" />
<Relationship Id="rId12" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/fontTable" Target="fontTable.xml" />
<Relationship Id="rId2" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles" Target="styles.xml" />
<Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/numbering" Target="numbering.xml" />
<Relationship Id="rId6" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/endnotes" Target="endnotes.xml" />
<Relationship Id="rId11" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/image" Target="media/image3.png" />
<Relationship Id="rId5" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/footnotes" Target="footnotes.xml" />
<Relationship Id="rId10" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/image" Target="media/image2.jpeg" />
<Relationship Id="rId4" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/webSettings" Target="webSettings.xml" />
<Relationship Id="rId9" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/image" Target="media/image1.jpeg" />
</Relationships>
提前感谢您的帮助!
答案 0 :(得分:1)
答案 1 :(得分:1)
URI : Namespace URI
LOCAL NAME : the local name (without prefix)
QName : the qualified XML name (with prefix)