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使用SAX将特定格式的XML转成CSV文件

发表于: 2012-04-28   作者:cutesunshineriver   来源:转载   浏览:
摘要: 直接贴代码 package org.autumn.kettle; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStreamWriter; i
直接贴代码
package org.autumn.kettle;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.util.Date;

import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

public class LearnSAX {

	public static void main(String[] args) throws Exception, SAXException {
		SAXParserFactory factory = SAXParserFactory.newInstance();
		SAXParser parser = factory.newSAXParser();
		Date before = new Date();
		parser.parse(new File("D:/hotel.xml"), new MyHandler());
		Date after = new Date();
		System.out.println("it takes " + (after.getTime() - before.getTime())
				+ "ms");
	}

}

class MyHandler extends DefaultHandler {

	OutputStreamWriter out = null;

	@Override
	public void startDocument() throws SAXException {
		try {
			out = new OutputStreamWriter(
					new FileOutputStream("D:/xml2csv.csv"), "GBK");
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		}
	}

	@Override
	public void endDocument() throws SAXException {
		try {
			out.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	@Override
	public void startElement(String uri, String localName, String qName,
			Attributes attributes) throws SAXException {
	}

	@Override
	public void endElement(String uri, String localName, String qName)
			throws SAXException {
		if (qName.equalsIgnoreCase("row")) {
			try {
				out.write("\r\n");
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}

	@Override
	public void characters(char ch[], int start, int length)
			throws SAXException {
		String s = new String(ch, start, length);
		if (!s.trim().isEmpty())
			try {
				out.write(s + ",");
			} catch (IOException e) {
				e.printStackTrace();
			}
	}

}


输入的XML文档:
<?xml version="1.0" encoding="UTF-8"?>
<Rows>
 <Row><domain>YJ</domain> <hotelname>阳江猾令新另赂宾馆</hotelname> <hotelno>230016</hotelno> <lxr>邹垮龚</lxr> <tel>23238687</tel> <address>阳江市铁核估金伎区0号</address> <ssq>2</ssq> <bz/> </Row>
 <Row><domain>QY</domain> <hotelname>清远埔沃睬储酒店</hotelname> <hotelno>443171</hotelno> <lxr>柏弗蚊</lxr> <tel>21289491</tel> <address>清远市陨促醛映区49号</address> <ssq>3</ssq> <bz/> </Row>
</Rows>


输出的CSV文件:
YJ,阳江猾令新另赂宾馆,230016,邹垮龚,23238687,阳江市铁核估金伎区0号,2,
QY,清远埔沃睬储酒店,443171,柏弗蚊,21289491,清远市陨促醛映区49号,3,



使用SAX将特定格式的XML转成CSV文件

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