批改xml及重新读取

package com.sinoufc.nms.alarm.util;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.net.URISyntaxException;
import java.util.Iterator;
import java.util.List;

import org.dom4j.Attribute;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;



public class AnalysisAlarmPlot {
	private final String path = this.getClass().getResource("/").getPath()+ "alarm_plot.xml";
	//private static String strFileName="alarm_plot.xml";
	
	// protected static HttpServletRequest httpServletRequest;
	 
	public  String analysisXML(){
		
		String refreshRate = null;
		  try
		  {
		 // String filePath = Thread.currentThread().getContextClassLoader().getResource("").toURI().getPath()+"com/sinoufc/nms/alarm/util/";
		
		 
			 File 	xmlFile=new File(path);      // Assgin XML File
		   SAXReader reader=new SAXReader();    //Connstructor SAXReader Object 
		   Document xmlDoc=reader.read(xmlFile);    // Read xml stream
		   Element root=xmlDoc.getRootElement();    //Get the root node  of XML File
		   List    listRowSet=xmlDoc.selectNodes("//refreshrate");   //Get the rowset
		   for(Iterator i=listRowSet.iterator();i.hasNext();){
		    Element ele=(Element)i.next();
		    refreshRate = ele.attribute("rate").getValue();
		    System.out.println(ele.attribute("rate").getValue());
		   }
		    
		  }catch(Exception e){
		   System.out.print(e.getMessage());
		  }
		return refreshRate;
	}
	
	public  void updateXML(String refRate){
		  try
		  {
		//  String filePath = Thread.currentThread().getContextClassLoader().getResource("").toURI().getPath()+"com/sinoufc/nms/alarm/util/";
		   
		  File xmlFile=new File(path);      // Assgin XML File
		   SAXReader reader=new SAXReader();    //Connstructor SAXReader Object 
		   Document xmlDoc=reader.read(xmlFile);    // Read xml stream
		   Element root=xmlDoc.getRootElement();    //Get the root node  of XML File
		   List    listRowSet=xmlDoc.selectNodes("//refreshrate");   //Get the rowset
		   for(Iterator i=listRowSet.iterator();i.hasNext();){
		    Element ele=(Element)i.next();
		    	Attribute a=ele.attribute("rate");
		    	ele.remove(a);
                ele.addAttribute("rate",refRate);
		   }
		   
		   XMLWriter output;
           OutputFormat format = OutputFormat.createPrettyPrint();
           try {
               output = new XMLWriter(new FileWriter(path), format);
               output.write(xmlDoc);
               output.close();
              
           } catch (IOException e) {
               e.printStackTrace();
           }
		  }catch(Exception e){
		   System.out.print(e.getMessage());
		  }
	}
	
	public  void changeAlarmLisenerState(String state){
		try{
		// String filePath = Thread.currentThread().getContextClassLoader().getResource("").toURI().getPath()+"com/sinoufc/nms/alarm/util/";
		  
		   File xmlFile=new File(path);      // Assgin XML File
		   SAXReader reader=new SAXReader();    //Connstructor SAXReader Object 
		   Document xmlDoc=reader.read(xmlFile);    // Read xml stream
		   Element root=xmlDoc.getRootElement();    //Get the root node  of XML File
		   List    listRowSet=xmlDoc.selectNodes("//alarmlisener");   //Get the rowset
		   for(Iterator i=listRowSet.iterator();i.hasNext();){
			    Element ele=(Element)i.next();
			    	Attribute a=ele.attribute("state");
			    	ele.remove(a);
	                ele.addAttribute("state",state);
			   }
			   
			   XMLWriter output;
	           OutputFormat format = OutputFormat.createPrettyPrint();
	           try {
	               output = new XMLWriter(new FileWriter(path), format);
	               output.write(xmlDoc);
	             
	               output.close();
	              
	           } catch (IOException e) {
	               e.printStackTrace();
	           }
		}catch(Exception e){
			e.printStackTrace();
		}
	}
	
	public  String getAlarmLisenerState(){
		String state = null;
		  try
		  {
		 // String filePath = Thread.currentThread().getContextClassLoader().getResource("").toURI().getPath()+"com/sinoufc/nms/alarm/util/";
		   System.out.println(path);
			  
		   File xmlFile=new File(path);      // Assgin XML File
		   SAXReader reader=new SAXReader();    //Connstructor SAXReader Object 
		   Document xmlDoc=null;
		   xmlDoc = reader.read(xmlFile);    // Read xml stream
		   Element root=xmlDoc.getRootElement();    //Get the root node  of XML File
		   List    listRowSet=xmlDoc.selectNodes("//alarmlisener");   //Get the rowset
		   for(Iterator i=listRowSet.iterator();i.hasNext();){
		    Element ele=(Element)i.next();
		    state = ele.attribute("state").getValue();
		    System.out.println(ele.attribute("state").getValue());
		   }
		    
		  }catch(Exception e){
		   System.out.print(e.getMessage());
		  }
		return state;
	}
	
/*	 public static void main(String [] args) throws URISyntaxException{
		 String filePath = Thread.currentThread().getContextClassLoader().getResource("").toURI().getPath()+"";
		 System.out.println("path:"+filePath+"com/sinoufc/nms/alarm/util/");
		
		updateXML();
		analysisXML();
	 }*/
}