parserxml.java~11~

一个解析xml到数据表的程序

package xmltotable;

import java.io.File;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import javax.xml.parsers.DocumentBuilder;
import org.xml.sax.SAXParseException;
import org.xml.sax.SAXException;
import java.io.IOException;
import java.util.LinkedList;
import java.util.List;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.xml.sax.Attributes;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class ParserXml {
  File file;
  DocumentBuilderFactory factory ;

  public ParserXml() {
   factory = DocumentBuilderFactory.newInstance();
  }

  public Document parserFile(File file)
  {
    Document document;
    List list;
    try {
      DocumentBuilder builder = factory.newDocumentBuilder();
      document = builder.parse( file );
      return document;
    } catch (SAXException spe) {
      spe.printStackTrace();
    }
    catch(IOException ex)
    {
      ex.printStackTrace();
    }
    catch(Exception exe)
    {
      exe.printStackTrace();
    }
    return null;
  }

  public List getDbFrDoc(Document doc)
  {
    LinkedList rBeacon=new LinkedList();

    Element root=doc.getDocumentElement();
    NodeList nl=root.getChildNodes();
    System.out.println("root:"+root.getNodeName()+" chlid length:"+nl.getLength());

    for(int i=0;i<nl.getLength();i++)
    {
      Element databaseEle=(Element)nl.item(i+1);
      System.out.println("dbName:"+databaseEle.getNodeName());
      if(databaseEle.getTagName().equals("database"))
      {
        LinkedList llist=getTablesList(databaseEle);
        rBeacon.add(llist);
      }
    }
    return rBeacon;
  }


  public LinkedList getTablesList(Element dbEle)
  {
    LinkedList tablesList=new LinkedList();
    NodeList nl=dbEle.getChildNodes();
    for(int i=0;i<nl.getLength();i++)
    {
      Element tableEle=(Element)nl.item(i+1);
      LinkedList tableProList=getTableProList(tableEle);
      tablesList.add(tableProList);
    }
    return tablesList;
  }

  public LinkedList getTableProList(Element tableEle)
  {
    LinkedList tableProList=new LinkedList();
    NamedNodeMap nl=tableEle.getAttributes();
    for(int i=0;i<nl.getLength();i++)
    {
      Node attrNode=nl.item(i);
      String colName=attrNode.getNodeValue();
      tableProList.add(colName);
    }
    return tableProList;
  }
  //public parseFile()
  public static void main(String[] args) {
  }

}