<?xml version="1.0"?> <digester-rules> <object-create-rule pattern="catalog" classname="Catalog" /> <set-properties-rule pattern="catalog" > <alias attr-name="library" prop-name="library" /> </set-properties-rule> <pattern value="catalog/book"> <object-create-rule classname="Book" /> <call-method-rule pattern="author" methodname="setAuthor" paramcount="0" /> <call-method-rule pattern="title" methodname="setTitle" paramcount="0" /> <set-next-rule methodname="addBook" /> </pattern> <pattern value="catalog/magazine"> <object-create-rule classname="Magazine" /> <call-method-rule pattern="name" methodname="setName" paramcount="0" /> <pattern value="article"> <object-create-rule classname="Article" /> <set-properties-rule> <alias attr-name="page" prop-name="page" /> </set-properties-rule> <call-method-rule pattern="headline" methodname="setHeadline" paramcount="0" /> <set-next-rule methodname="addArticle" /> </pattern> <set-next-rule methodname="addMagazine" /> </pattern> </digester-rules>
import org.apache.commons.digester.*; import org.apache.commons.digester.xmlrules.*; import java.io.*; import java.util.*; public class XmlRulesDriver { public static void main( String[] args ) { try { File input = new File( args[0] ); File rules = new File( args[1] ); Digester digester = DigesterLoader.createDigester( rules.toURL() ); Catalog catalog = (Catalog)digester.parse( input ); System.out.println( catalog.toString() ); } catch( Exception exc ) { exc.printStackTrace(); } } }
