Java操作XML文件(1)-写入XML文件

在Java中写入XML文件操作：

package xml;

import java.io.BufferedWriter;
import java.io.FileOutputStream;
import java.io.OutputStreamWriter;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import org.w3c.dom.Document;
import org.w3c.dom.Element;

public class XMLWriter {
	private String fileName;
	private Document document;

	public XMLWriter(String fileName) throws Exception {
		this.fileName = fileName;
		createXmlDocument();
	}

	private void createXmlDocument() throws Exception {
		DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
		DocumentBuilder builder = factory.newDocumentBuilder();
		document = builder.newDocument();
	}

	public Element createDocumentElement(String name) {
		Element root = document.createElement(name);
		document.appendChild(root);
		return root;
	}

	public Element createElement(Element parent, String tagName, String text) {
		Element element = document.createElement(tagName);
		if (text != null && text.length() > 0) {
			element.setTextContent(text);
		}
		parent.appendChild(element);
		return element;
	}

	public void toSave() throws Exception {
		TransformerFactory factory = TransformerFactory.newInstance();
		factory.setAttribute("indent-number", new Integer(4));// 设置缩进长度为4
		Transformer transformer = factory.newTransformer();
		transformer.setOutputProperty(OutputKeys.INDENT, "yes");// 设置自动换行
		DOMSource source = new DOMSource(document);
		transformer.transform(source, new StreamResult(new BufferedWriter(
				new OutputStreamWriter(new FileOutputStream(fileName), "UTF-8"))));
	}

	public static void main(String[] args) {
		String fileName = "E:\\test.xml";
		System.out.println(fileName);
		try {
			XMLWriter writer = new XMLWriter(fileName);
			Element root = writer.createDocumentElement("Books");
			Element book = writer.createElement(root, "Book", "");
			writer.createElement(book, "Price", "52.00");
			Element title = writer.createElement(book, "Title", "test xml");
			title.setAttribute("Auth", "yy");
			writer.toSave();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}

评论

1 楼 zeroman1212 2012-03-05  

感谢楼主，