求一个 Jdom 操作XML 例子 修改和查询即可 谢谢 奉上50分

Question

package ant.xml.test;import java.io.FileOutputStream;
import java.util.List;import org.jdom.Document;
import org.jdom.Element;
import org.jdom.input.SAXBuilder;
import org.jdom.output.Format;
import org.jdom.output.XMLOutputter;
/**
 * need add jdom jar to the classpath
 * @author ilysony
 *
 */
public class XmlTest {
public static void main(String[] args){
XmlTest xt = new XmlTest();
try {
xt.buildXml();
} catch (Exception e) {
e.printStackTrace();
}

SAXBuilder  sb = new SAXBuilder();
try{
Document readDoc = sb.build("student-info.xml");
Element stu = readDoc.getRootElement();  //<student-info>
List list = stu.getChildren("student");
for(int i=0;i<list.size();i++){
Element e = (Element)list.get(i); //<student>
String numberStr = e.getChildText("number");  //<number>001</number>
String nameStr = e.getChildText("name"); //<name>张三</name>
String ageStr = e.getChildText("age");  // <age>25</age>
System.out.println("student-info");
System.out.println("----------student-------------");
System.out.println("number:-------"+numberStr);
System.out.println("name:-------"+nameStr);
System.out.println("age:-------"+ageStr);
}
}catch(Exception e){
e.printStackTrace();
}


}
public void buildXml() throws Exception{
Element root;
Element student;
Element number;
Element name;
Element age;

root = new Element("student-info");
student  = new Element("student");
number = new Element("number");
name = new Element("name");
age = new Element("age");
root.addContent(student);

Document doc = new Document(root);

number.setText("001");
name.setText("张三");
age.setText("25");
student.addContent(number);
student.addContent(name);
student.addContent(age);


Format format = Format.getCompactFormat();
format.setEncoding("gb2312");
format.setIndent(" ");

XMLOutputter  xmlOutputter = new XMLOutputter(format);
xmlOutputter.output(doc, new FileOutputStream("student-info.xml"));
}

}

Answer 1

<?xml version="1.0" encoding="UTF-8"?>
<root>
<person>
<name>a1</name>
<salaris>99999</salaris>
</person>
<person>
<name>a2</name>
<salaris>99999</salaris>
</person>
<person>
<name>a3</name>
<salaris>99999</salaris>
</person>
</root>
import java.util.List;import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;public class One
{
    public static void main(String[] args)
    {
        SAXBuilder builder = new SAXBuilder();        Document doc = null;
        try
        {
            doc = builder.build(ClassLoader.getSystemResource("test.xml"));
        }
        catch (JDOMException e1)
        {
            e1.printStackTrace();
        }
        if (null != doc)
        {
            Element root = doc.getRootElement();
            List list = root.getChildren("person");
            for (int i = 0; i < list.size(); i++)
            {
                Element element = (Element) list.get(i);
                String name = element.getChildText("name");
                System.out.println(name);
            }
        }    }}
需要下载jdom.jar  

Answer 2

<?xml version="1.0" encoding="UTF-8"?>
<sys-configure>
    <jdbc-info>
        <driver-class-name>oracle.jdbc.driver.OracleDriver</driver-class-name>
        <url>jdbc:oracle:thin:@127.0.0.1:1521:sxt</url>
        <user-name>drp</user-name>
        <password>drp</password>
    </jdbc-info>
</sys-configure>GlobalConfigure.java
package com.bjsxt.shopping.testjdom;import java.io.IOException;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.jdom.xpath.XPath;public class GlobalConfigure
{
    private static GlobalConfigure instance = new GlobalConfigure();
    private static final String CONFIG_FILE_NAME = "gobal-configure.xml";
    private Element rootElt;
    private JdbcInfo jdbcInfo = new JdbcInfo();    private GlobalConfigure()
    {
        SAXBuilder sb = new SAXBuilder();
        try
        {
            Document doc = sb.build(Thread.currentThread().getContextClassLoader().getResourceAsStream(CONFIG_FILE_NAME));
            this.rootElt = doc.getRootElement();
            this.initJdbcInfo();
        } catch (JDOMException e)
        {
            e.printStackTrace();
        } catch (IOException e)
        {
            e.printStackTrace();
        }
    }    private void initJdbcInfo()
    {
        try
        {
            Element driverClassNameElt = (Element) XPath.selectSingleNode(rootElt, "//sys-configure/jdbc-info/driver-class-name");
            //System.out.println(driverClassNameElt.getText());
            jdbcInfo.setDriverClassName(driverClassNameElt.getText());
           
            Element urlElt=(Element)XPath.selectSingleNode(rootElt, "//sys-configure/jdbc-info/url");
            jdbcInfo.setUrl(urlElt.getText());
           
            Element userNameElt=(Element)XPath.selectSingleNode(rootElt, "//sys-configure/jdbc-info/user-name");
            jdbcInfo.setUsername(userNameElt.getText());
           
            Element passwordElt=(Element)XPath.selectSingleNode(rootElt, "//sys-configure/jdbc-info/password");
            jdbcInfo.setPassword(passwordElt.getText());
        } catch (JDOMException e)
        {
            e.printStackTrace();
        }
    }    public static void main(String args[])
    {
        System.out.println(GlobalConfigure.getInstance().getJdbcInfo());
    }    public static GlobalConfigure getInstance()
    {
        return instance;
    }    public JdbcInfo getJdbcInfo()
    {
        return jdbcInfo;
    }
}