test.java

用Java解析XML和压缩包实例！ Eclipse原工程代码

package com.dlns;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.util.Iterator;
import java.util.List;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;
import org.xml.sax.EntityResolver;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

@SuppressWarnings("unchecked")
public class Test {
	Document doc = null;

	public Test() throws DocumentException, IOException, SAXException {
		Document doc = loadXML("c:\\demo.xml"); // 载入XML文档 
		System.out.println(doc.asXML());
		printDoc(doc); // 打印XML文档全部内容
		storeDoc(doc, "c:\\new.xml"); // 把XML文档存入硬盘 
//		doc = valideDoc("c:\\class.xml"); // 校验dtd XML文档 printDoc(doc);
//		doc = validateDocBySxd("classSchema.xml"); // 校验Schema文档 
		printDoc(doc);
//		String url = getClass().getResource("/xml/dom4j/wkjava/class.xsd").toString();
//		doc = validateDocBySxd("classSchema.xml", url); // 校验Schema文档（俩参数）
		printDoc(doc);
		doc = createDoc(); // 创建Schema文档
		storeDoc(doc, "c:\\root.xml");
//		doc = validateDocBySxd("classSchema.xml");
//		updateZip(doc, "102202"); // 在文档中修改原属
		printDoc(doc);
//		doc = validateDocBySxd("classSchema.xml");
//		printNames(doc); // 打印文档中所有学生名字
//		System.out.println(getStudentCount(doc));
	}

	public static void main(String[] args) {
		try {
			new Test();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	public Document loadXML(String xmlfile) throws FileNotFoundException, DocumentException {
		SAXReader reader = new SAXReader();
		doc = reader.read(new FileInputStream(xmlfile));
		return doc;
	}

	public void printDoc(Document doc) throws IOException {
		Writer out = new OutputStreamWriter(System.out, "gb2312");
		OutputFormat format = OutputFormat.createPrettyPrint();
		XMLWriter writer = new XMLWriter(out, format);
		writer.write(this.doc);
		out.flush();
	}

	public void storeDoc(Document doc, String filename) throws IOException {
		Writer out = new OutputStreamWriter(new FileOutputStream(filename), "utf-8");
		OutputFormat format = OutputFormat.createPrettyPrint();
		XMLWriter writer = new XMLWriter(out, format);
		writer.write(this.doc);
		printDoc(doc);
		out.close();
	}

	public Document valideDoc(String xmlfile) throws DocumentException, IOException {
		EntityResolver resolver = new EntityResolver() {
			public InputSource resolveEntity(String publicId, String systemId) throws SAXException, IOException {
				if (publicId.equals("//class from weiking")) {
					InputStream in = new FileInputStream("class.dtd");
					return new InputSource(in);
				}
				return null;
			}
		};
		SAXReader reader = new SAXReader(true);
		reader.setEntityResolver(resolver);
		Document doc = reader.read(new FileInputStream(xmlfile));
		return doc;
	}

	public Document validateDocBySxd(String xmlfile) throws SAXException, DocumentException, IOException {
		SAXReader reader = new SAXReader(true);
		reader.setFeature("http://apache.org/xml/features/validation/schema", true);
		Document doc = reader.read(new FileInputStream(xmlfile));
		return doc;
	}

	public Document validateDocBySxd(String xmlfile, String SchemaUrl) throws SAXException, FileNotFoundException, DocumentException {
		SAXReader reader = new SAXReader(true);
		reader.setFeature("http://xml.org/sax/features/validation", true);
		reader.setFeature("http://apache.org/xml/features/validation/schema", true);
		reader.setFeature("http://apache.org/xml/features/validation/schema-full-checking", true);
		reader.setProperty("http://apache.org/xml/properties/schema/external-noNamespaceSchemaLocation", SchemaUrl);
		Document doc = reader.read(new FileInputStream(xmlfile));
		return doc;
	}

	public Document createDoc() {
		Document doc = DocumentHelper.createDocument();
		Element root = doc.addElement("root");
		Element author2 = root.addElement("author").addAttribute("name", "Toby").addAttribute("location", "Germany").addText("Tobias Rademacher");
		Element author1 = root.addElement("author").addAttribute("name", "James").addAttribute("location", "UK").addText("James Strachan");
		return doc;
	}

	public void updateZip(Document doc, String zip) {
		String xpath = "/Class/Teacher/zip";
		Element e = (Element) doc.selectSingleNode(xpath);
		e.setText(zip);
	}

	public void printNames(Document doc) {
		String xpath = "/Class/Students/Student/name";
		List list = doc.selectNodes(xpath);
		for (Iterator i = list.iterator(); i.hasNext();) {
			Element e = (Element) i.next();
			System.out.println(e.element("last").getText() + e.valueOf("first"));
		}
	}

	public int getStudentCount(Document doc) {
		int count = 0;
		String xpath = "count(/Class/Students/Student)";
		count = doc.numberValueOf(xpath).intValue();//    	
		String value = doc.valueOf(xpath);//    
		count = Integer.parseInt(value);
		return count;
	}
}