DOM4J的简单应用
引言
Dom4j是一组Xml操作的组件包，主要用来读写XmL文件。由于DOM4J性能优良，功能强大，且具有易用性，所以现在已被广泛的应用开来。
DOM4J下载地址http://sourceforge.net/
代码如下：
<p>package cn.wtu.dom4j;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Iterator;</p><p>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;</p><p>public class Dom4jTest {</p><p> public static String fileName = "E:/a.xml";
public static void main(String[] args) {
// create();
read();
}</p><p> /**
* 利用dom4j读取xml文件
*/
private static void read() {
// TODO Auto-generated method stub
File file = new File(fileName);
SAXReader reader = new SAXReader(); //建立SAX解析器读取
Document document = null;
try {
document = reader.read(file); //读取文档
} catch (DocumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Element root = document.getRootElement(); //取得根元素
Iterator iter = root.elementIterator();
while(iter.hasNext()){
Element linkman = (Element) iter.next();
System.out.println("name:"+linkman.elementText("name"));
System.out.println("email:"+linkman.elementText("email"));
}
}</p><p> /**
* 利用dom4j生成xml文件
*/
private static void create() {
Document doc = DocumentHelper.createDocument(); //创建文档
Element address = doc.addElement("address"); //定义根节点address
Element link = address.addElement("linkman"); //定义address下的子节点linkman
Element name = link.addElement("name"); //定义linkman下的子节点name
Element email = link.addElement("email");// 定义linkman下的子节点 email
name.setText("心情不开心敲敲代码"); //设置name节点的内容<name>心情不开心敲敲代码</name>
email.setText("<a target=_blank href="mailto:[email protected]');//">[email protected]");//</a>设置email节点的内容<email>[email protected]</email>
OutputFormat format = OutputFormat.createPrettyPrint(); //设置文档输出格式
format.setEncoding("UTF-8"); //指定文档的编码
try {
//向文件输出XML文档
XMLWriter writer = new XMLWriter(new FileOutputStream(
new File(fileName)),//指定文档的存储位置
format);
writer.write(doc);
writer.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
</p>