Apache-dom4j的使用(一)

shuaiwei588

本节主要介绍如何用dom4j生成一个xml文档

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE catalog SYSTEM "file://x:/dtd/catalog.dtd">
<books>
<!-- this is a test for dom4j. -->
<book title="My Book">
<author sex="male">
<first-name>Zhuo</first-name>
<last-name>YING</last-name>
</author>
</book>
</books>


用代码操作xml很简单，仅仅通过看方法名就可以得知。

public class TestMakeXML {
public void generateDocument() {
Document document = DocumentHelper.createDocument();
Element books = document.addElement("books");
books.addComment(" this is a test for dom4j. ");
Element book = books.addElement("book");
book.addAttribute("title", "My Book");
Element author = book.addElement("author");
author.addAttribute("sex", "male");
Element first = author.addElement("first-name");
Element last = author.addElement("last-name");
first.addText("Zhuo");
last.addText("YING");
document.addDocType("books", null, "file://x:/dtd/catalog.dtd");
try {
XMLWriter output = new XMLWriter(new FileWriter(new File("d:/catalog/catalog.xml")));
output.write(document);
output.close();
} catch (IOException e) {
System.out.println(e.getMessage());
}
}
public static void main(String[] argv) {
TestMakeXML dom4j = new TestMakeXML();
dom4j.generateDocument();
}
}

稍微有一点要说明，最后xml保存到磁盘时，文件是必须已经存在了。