java中xml解析器的應(yīng)用實例
xml解析中,通常大家讀文件,解析的時候沒有問題,但是在寫文件的時候常常會碰到亂碼等問題,就我的個人體會是一般只要在寫文件的時候采用文件流的形式,設(shè)置好當(dāng)前的編碼方式,通常就會避免此類問題的發(fā)生!下面有兩個簡單的分別是采用jdom和dom4j實現(xiàn)的例子:
1、dom4j
package org.lyj.xml;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import org.dom4j.Document;
import org.dom4j.Element;
import java.io.FileWriter;
import org.dom4j.io.OutputFormat;
import org.dom4j.Namespace;
import org.dom4j.io.XMLWriter;
import java.io.File;
import java.io.IOException;
import org.dom4j.DocumentHelper;
/**
*
Title:
*
*
Description:
*
*
Copyright: Copyright (c) 2005
*
*
Company:
*
* @author not attributable
* @version 1.0
*/
public class Dom4jTest {
public void generateDocument() {
org.dom4j.DocumentFactory df = new org.dom4j.DocumentFactory();
Document document = df.createDocument();//.createDocument();
Element catalogElement = document.addElement("catalog");
catalogElement.addComment("An XML Catalog");
catalogElement.addProcessingInstruction("target", "text");
Element journalElement = catalogElement.addElement("journal");
journalElement.addAttribute("title", "XML Zone");
journalElement.addAttribute("publisher", "IBM developerWorks");
Element articleElement = journalElement.addElement("article");
articleElement.addAttribute("level", "Intermediate");
articleElement.addAttribute("date", "December-2001");
Element titleElement = articleElement.addElement("title");
titleElement.setText("Java configuration with XML Schema");
Element authorElement = articleElement.addElement("author");
Element firstNameElement = authorElement.addElement("錄音機(jī)");
firstNameElement.setText("Marcello");
Element lastNameElement = authorElement.addElement("劉");
lastNameElement.setText("Vitaletti");
document.addDocType("catalog",
null, "file://c:/Dtds/catalog.dtd");
document.setXMLEncoding("gb2312");
try {
OutputFormat of = OutputFormat.createCompactFormat();
of.setEncoding("gb2312");
XMLWriter output = new XMLWriter(
new java.io.FileOutputStream(new File("c:/catalog/catalog.xml")),of);
output.write(document);
output.close();
} catch (IOException e) {
System.out.println(e.getMessage());
}
}
public static void main(String[] argv) {
Dom4jTest dom4j = new Dom4jTest();
dom4j.generateDocument();
}
}
2、jdom
package org.lyj.xml;
import org.jdom.output.Format;
import org.jdom.Document;
import java.io.IOException;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;
import org.jdom.JDOMException;
/**
*
Title:
*
*
Description:
*
*
Copyright: Copyright (c) 2005
*
*
Company:
*
* @author not attributable
* @version 1.0
*/
public class JdomWriter {
public JdomWriter() {
}
public void write(){
try {
SAXBuilder builder = new SAXBuilder();
Document doc = builder.build("aa.xml");
XMLOutputter outputter = new XMLOutputter(Format.getPrettyFormat()。setEncoding("utf-8"));
outputter.output(doc, new java.io.FileOutputStream("bb.xml"));
} catch (JDOMException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String args[]){
JdomWriter jd = new JdomWriter();
jd.write();
}
}