xml之SAX解析
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import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
public class SaxHandler extends DefaultHandler
{
public void characters(char[] a,int b,int c) throws SAXException
{
String content=new String(a,b,c);
System.out.println("1"+content+"1");
super.characters(a, b, c);
}
public void endDocument() throws SAXException
{
System.out.println("end document");
super.endDocument();
}
public void endElement(String a,String b,String c) throws SAXException
{
System.out.println("end element:"+c);
super.endElement(a, b, c);
}
public void startDocument() throws SAXException
{
System.out.println("start document");
super.startDocument();
}
public void startElement(String a,String b,String c,Attributes d) throws SAXException
{
System.out.println("start element:"+c);
// super.startElement(uri, localName, qName, attributes);
if(d!=null)
{
for(int i=0;i<d.getLength();i++)
{
System.out.print(d.getQName(i) + "=\"" + d.getValue(i) + "\"");
}
}
System.out.println(c+":");
super.startElement(a, b, c, d);
}
main.java
SAXParserFactory f=SAXParserFactory.newInstance();
SAXParser parser=f.newSAXParser();
File ff=new File("e:/grade2.xml");
SaxHandler s=new SaxHandler();
parser.parse(ff, s);
xml 文档
<?xml version="1.0" encoding="UTF-8"?>
<books>
<book id="001">
<title>Harry Potter</title>
<author>J K. Rowling</author>
</book>
<book id="002">
<title>Learning XML</title>
<author>Erik T. Ray</author>
</book>
</books>
输出结果:
start document
start element:books
books:
1
1
start element:book
id="001"book:
1
1
start element:title
title:
1Harry Potter1
end element:title
1
1
start element:author
author:
1J K. Rowling1
end element:author
1
1
end element:book
1
1
start element:book
id="002"book:
1
1
start element:title
title:
1Learning XML1
end element:title
1
1
start element:author
author:
1Erik T. Ray1
end element:author
1
1
end element:book
1
1
end element:books
end document
}
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