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JAVA解析XML文件的四种方法之二- > SAX
JAVA Bean:
package com.test;
import org.xml.sax.*;
import org.xml.sax.helpers.*;
import javax.xml.parsers.*;
public class MyXMLReader extends DefaultHandler {
java.util.Stack tags = new java.util.Stack();
public MyXMLReader() {
super();
}
public static void main(String args[]) {
long lasting = System.currentTimeMillis();
try {
SAXParserFactory sf = SAXParserFactory.newInstance();
SAXParser sp = sf.newSAXParser();
MyXMLReader reader = new MyXMLReader();
sp.parse(new InputSource("data_10k.xml"), reader);
} catch (Exception e) {
e.printStackTrace();
}
System.out.println("运行时间:" + (System.currentTimeMillis() - lasting) + " 毫秒");
}
public void characters(char ch[], int start, int length) throws SAXException {
String tag = (String) tags.peek();
if (tag.equals("NO")) {
System.out.print("车牌号码:" + new String(ch, start, length));
}
if (tag.equals("ADDR")) {
System.out.println(" 地址:" + new String(ch, start, length));
}
}
public void startElement(
String uri,
String localName,
String qName,
Attributes attrs) {
tags.push(qName);
}
}
测试结果如下:
10k消耗时间:110 47 109 78
100k消耗时间:344 406 375 422
1000k消耗时间:3234 3281 3688 3312
10000k消耗时间:32578 34313 31797 31890 30328
本文来自ChinaUnix博客,如果查看原文请点:http://blog.chinaunix.net/u1/34710/showart_320589.html |
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