IKE第一阶段6个包和第二阶段3个包的作用

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;

import com.wutka.jox.JOXBeanInputStream;
import com.wutka.jox.JOXBeanOutputStream;

public class BeanXMLMapping {

/** *//**
*  Retrieves a bean object for the
*  received XML and matching bean class
*/
public static Object fromXML(String xml, Class className) {
ByteArrayInputStream xmlData = new ByteArrayInputStream(xml.getBytes());
JOXBeanInputStream joxIn = new JOXBeanInputStream(xmlData);
try {
return (Object) joxIn.readObject(className);
} catch (IOException exc) {
exc.printStackTrace();
return null;
} finally {
try {
xmlData.close();
joxIn.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}

/** *//**
*  Returns an XML document.nbspString for the received bean
*/
public static String toXML(Object bean) {
ByteArrayOutputStream xmlData = new ByteArrayOutputStream();
JOXBeanOutputStream joxOut = new JOXBeanOutputStream(xmlData);
try {
joxOut.writeObject(beanName(bean), bean);
return xmlData.toString();
} catch (IOException exc) {
exc.printStackTrace();
return null;
} finally {
try {
xmlData.close();
joxOut.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}

/** *//**
*  Find out the bean class name
*/
private static String beanName(Object bean) {
String fullClassName = bean.getClass().getName();
String classNameTemp = fullClassName.substring(
fullClassName.lastIndexOf(".") + 1,
fullClassName.length()
);
return classNameTemp.substring(0, 1)
+ classNameTemp.substring(1);
}
public static void main(String[] args) {
String content = "<WebAppPolicy lcid=\"1033\"><WebAppPolicyZones><WebAppPolicyZone zonename=\"(All zones)\"/>"
+ "<WebAppPolicyZone zonename=\"Default\"/></WebAppPolicyZones></WebAppPolicy>";
//        System.out.println(content);
Object obj = fromXML(content, WebAppPolicy.class);
WebAppPolicy web = (WebAppPolicy) obj;
System.out.println(web.getLcid());
System.out.println(((WebAppPolicy)obj).getLcid());
System.out.println(((WebAppPolicy)obj).getWebAppPolicyZones().getWebAppPolicyZone()[0].getZonename());
System.out.println(((WebAppPolicy)obj).getWebAppPolicyZones().getWebAppPolicyZone()[1].getZonename());
}
}