xmlReader

package schedulers;

import java.io.File;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.List;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.Node;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;

import util.PubFun;

public class XMLReader {

 private Document instance = null;

 public XMLReader( File file ) {
  try {
   final SAXReader xmlReader = new SAXReader();
   instance = xmlReader.read(file);
  } catch (DocumentException e) {
   System.out.println(file.getPath() + " can't be found");
  }
 }
 
    public XMLReader(StringReader stringReader) {
        try {

            final SAXReader xmlReader = new SAXReader();
            instance = xmlReader.read(stringReader);
            //logger.debug("StringReader successfully loaded");

        } catch (DocumentException e) {
         System.out.println("StringReader can't be load => "+stringReader.toString());
        }
    }
   
    public XMLReader(String strXML) {
        try {
            instance =   DocumentHelper.parseText(strXML);
        } catch (DocumentException e) {
         System.out.println("StringReader can't be load => "+strXML);
        }
    }

 public String getValue( String nodeName ) {

  if (!PubFun.isNullorBlank(nodeName)) {
   final Node node = instance.selectSingleNode(nodeName);
   return ("null".equals(node.getText()) ? null : node.getText());
  } else {
   System.out.println("String is NULL");
   return null;
  }
 }

 public List getNodes( String nodeName ) {
  if (!PubFun.isNullorBlank(nodeName)) {
   List listNodes = instance.selectNodes(nodeName);
   return listNodes;
  } else {
   System.out.println("String is NULL");
   return null;
  }
 }

 public String getNodeValue( Node node, String nodeName ) {
  if (!PubFun.isNullorBlank(nodeName)) {
   final Node subNode = node.selectSingleNode(nodeName);
   return ("null".equals(subNode.getText()) ? null : subNode.getText());
  } else {
   System.out.println("String is NULL");
   return null;
  }
 }
 
 public boolean removeNode(Node node){  
  return node.getParent().remove(node);
 }
 
 public Element addElement(String elementName){  
  return instance.getRootElement().addElement(elementName);
 }
 
 public Document getRoot(){
  return instance;   
 }
 
 public String writeToString(){  
  StringWriter strReturn = new StringWriter();  
  XMLWriter writer = null;
  OutputFormat format = OutputFormat.createPrettyPrint();
     format.setEncoding("GBK");
     try {
   //writer= new XMLWriter(ll,format);
      writer = new XMLWriter(strReturn,format);
      //writer = new XMLWriter(new FileOutputStream(new File("c:\\aaa.xml")),format);
   writer.write(instance);
   writer.close();
  } catch (Exception e) {
   // TODO 自动生成 catch 块
   e.printStackTrace();
  }
  return strReturn.toString();
 } 
}