.xml正向反向取值（之四）

FileListener类：

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.TimerTask;

import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;
import org.kxml2.io.KXmlParser;
import org.kxml2.kdom.Document;
import org.kxml2.kdom.Element;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;

import com.%##.common.XMLParserHelper;

/* 
 * Class: FileListener
 * Description: 单个文件监听，如果文件已更新则自动重新加载
 * Version: 1.0 
 * Author: Carson.Huang
 * Created on Dec 1, 2010 
 */
public class FileListener extends TimerTask
{	
	private File file = null;
	private long lastModified = 0;
	private Properties prop = new Properties();	
	private Element element = new Element();
	
	private boolean fileFlag = true;
	
    private Logger logger = Logger.getLogger(FileListener.class);
    //所有的枚举文件
    private Map<String,EnumerateFile> enumerateFiles=new HashMap<String,EnumerateFile>();
    //枚举文件
    private List<String> enumPaths=new ArrayList<String>();
    //当前的枚举文件名
    private String currentEnumFilePath="";
    
	FileListener(String filePath)
	{
		//设置所有的枚举文件的信息
		filePath=setEnumInfo(filePath);
		if (filePath != null)
		{
			this.file = new File(filePath);
			if (!file.isFile())
			{
				logger.error("The file[" + filePath + "] doesn't exist, please check it.");
				return;
			}
			
			if (this.file.getName().endsWith(".properties"))
			{
				fileFlag = true;
			}
			else if (this.file.getName().endsWith(".xml"))
			{
				fileFlag = false;
			}
			else
			{
				logger.info("nothing to do...");
			}
			
		}
	}
	
	public void run()
	{
		if (isFileUpdated() && fileFlag)
		{
        	logger.info("The properties file[" + getPath() + "] was modified.");
        	loadFile();
		}else if(isFileUpdated() && !fileFlag){
			StringBuffer sb=new StringBuffer();
			for(String s : enumerateFiles.keySet()){
				sb.append(enumerateFiles.get(s).getReLoadEnumFilePath()).append("\t");
    		}
			logger.info("The properties files[" + sb.toString() + "] was modified.");
			
			loadFile();
		}
		
	}
	
	private boolean isFileUpdated()
	{
		if(this.fileFlag){
			long lastUpdateTime = file.lastModified();
	        return lastUpdateTime > this.lastModified;
		}else{
			return EnumerateFile.checkFileIsModified(enumerateFiles);
		}
    }
	
	public void loadFile()
	{
		if (this.fileFlag)
    	{
    		loadProperties();
    	}
    	else
    	{
    		for(String s : enumerateFiles.keySet()){
    			if(enumerateFiles.get(s).getReLoadEnumFilePath()!=null&&enumerateFiles.get(s).getReLoadEnumFilePath().length()>1){
    				currentEnumFilePath=s;
        			loadXml();
    			}
    		}
    	}
	}