文件监控，实时监控文件加载（Commons-io）

    最近需求优化CPU时碰到的，记录下，闲话少直接上代码:

1.启动代码

public static void main(String[] args) {
		FileListener FileListener = new FileListener();

		boolean b = false;

			if(!b){
				try {
	                 /** 启动文件监听 */
					System.out.println("文件监听开始............");
					String path =  "F:\\mulu";
					System.out.println("监听文件路径" + path);
					FileMonitor m = new FileMonitor(5000);  
					m.monitor(path,FileListener);  
					m.start();
					System.out.println("文件监听启动............");
				} catch (Exception e) {
					System.out.println("启动文件监听失败.........." + e.getMessage());
					e.printStackTrace();
				}
			}
			b = true;



	}

2、文件动作展示代码 

package org.mh.web.view.admin;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;

import org.apache.commons.io.monitor.FileAlterationListener;
import org.apache.commons.io.monitor.FileAlterationObserver;
import org.mh.web.task.TaskReceiverRunnable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
//根据相关触发的行为，实现相关的业务
public class FileListener implements FileAlterationListener {
	
	/**日志工厂*/
	protected final Logger logger = LoggerFactory.getLogger(this.getClass());
	
	@Override
	public void onStart(FileAlterationObserver observer) {
		logger.info("onStart.............");
		
	}

	@Override
	public void onDirectoryChange(File directory) {
		 logger.info("[目录修改]:" + directory.getName());
		
	}

	@Override
	public void onDirectoryCreate(File directory) {
		 logger.info("[目录新建]:" + directory.getName());
		
	}

	@Override
	public void onDirectoryDelete(File directory) {
		 logger.info("[目录删除]:" + directory.getName());
		
	}

	@Override
	public void onFileChange(File file) {
		logger.info("[文件创建修改]: :" + file.getName());		
	}

	@Override
	public void onFileCreate(File file) {
		logger.info("[文件新建执行]:" + file.getName());
		
	}

	@Override
	public void onFileDelete(File file) {
		logger.info("[文件删除]:" + file.getName());		
	}

	@Override
	public void onStop(FileAlterationObserver observer) {
		logger.info("onStop............");		
	}

}

3、监控代码 

package org.mh.web.view.admin;

import java.io.File;

import org.apache.commons.io.monitor.FileAlterationListener;
import org.apache.commons.io.monitor.FileAlterationMonitor;
import org.apache.commons.io.monitor.FileAlterationObserver;
//观察，监控 文件变化
public class FileMonitor {  
    
    FileAlterationMonitor monitor = null;  
    public FileMonitor(long interval) throws Exception {  
        monitor = new FileAlterationMonitor(interval);  
    }  
  
    public void monitor(String path, FileAlterationListener listener) {  
        FileAlterationObserver observer = new FileAlterationObserver(new File(path));  
        monitor.addObserver(observer);  
        observer.addListener(listener);  
    }  
    public void stop() throws Exception{  
        monitor.stop();  
    }  
    public void start() throws Exception {  
        monitor.start();  
    }  
    
}

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