JavaWeb - XML解析 - DOM

java
import java.io.* ;
import org.w3c.dom.* ;
import javax.xml.parsers.* ;
public class demo {
public static void main(String args []){
// 取得DocumentBuilderFactory类的对象
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance() ;
// 取得DocumentBuilder类的对象
try{
DocumentBuilder build = factory.newDocumentBuilder() ;
Document doc = build.parse(new File("E:" + File.separator + "02.xml")) ;
// 得到所有的linkman节点
NodeList nl = doc.getElementsByTagName("linkman") ;
for(int x=0; x<nl.getLength(); x++){
Element e = (Element)nl.item(x) ;		// 取出每一个元素
System.out.println("编号：" + e.getElementsByTagName("id").item(0).getFirstChild().getNodeValue()) ;
System.out.println("姓名：" + e.getElementsByTagName("name").item(0).getFirstChild().getNodeValue()) ;
System.out.println("邮箱：" + e.getElementsByTagName("email").item(0).getFirstChild().getNodeValue()) ;
System.out.println() ;
}
} catch(Exception e) {
;
}
}
}

xml
<?xml version="1.0" encoding="GBK" standalone="no" ?>
<addresslist>
<linkman>
<id>001</id>
<name>W_Jp</name>
<email>271953489@qq.com</email>
</linkman>
<linkman>
<id>002</id>
<name>W_Cc</name>
<email>109604484@qq.com</email>
</linkman>
<linkman>
<id>003</id>
<name>C_Jm</name>
<email>879451036@qq.com</email>
</linkman>
</addresslist>

未运行
import java.io.* ;
import org.w3c.dom.* ;
import javax.xml.parsers.* ;
import javax.xml.transform.* ;
import javax.xml.transform.dom.* ;
import javax.xml.transform.dom.stream.* ;
public class demo {
public static void main(String args []){
// 取得DocumentBuilderFactory类的对象
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance() ;
// 取得DocumentBuilder类的对象
DocumentBuilder build = factory.newDocumentBuilder() ;
Document doc = build.newDocument() ;		// 创建一个新的XML文档

Element addresslist = doc.createElement("addresslist") ;
Element linkman = doc.createElement("linkman") ;
Element id = doc.createElement("id") ;
Element name = doc.createElement("name") ;
Element email = doc.createElement("email") ;

// 设置节点内容
id.appendChild(doc.createTextNode("001")) ;
name.appendChild(doc.createTextNode("wjp")) ;
email.appendChild(doc.createTextNode("271953489@qq.com")) ;

// 设置各个节点的关系
linkman.appendChild(id) ;			// id是linkman的子节点
linkman.appendChild(name) ;			// name是linkman的子节点
linkman.appendChild(email) ;		// email是linkman的子节点
addresslist.appendChild(linkman) ;	//
doc.appendChild(addresslist) ;

TransformerFactory tf = TransformerFactory.newInstance() ;
Transformer t = tf.newTransFormer() ;
t.setOutputProperty(OutputKeys.ENCODING, "utf-8") ;		// 处理中文
DOMSource source = new DOMSource(doc) ;		// 准备输出文档
StreamResult result = new StreamResult(new File("e:" + File.separator + "output.xml")) ;
t.transform(source, result) ;
}
}