保存java类到磁盘

package vo;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

public class IOUtil {
	
	private static String save_path = "d:\\";
	public static void saveVO(Object object,String priKey) throws Exception
	{
		File f = new File(save_path,object.getClass().getName()+"."+priKey);
	    FileOutputStream fos=new FileOutputStream(f);   
	    ObjectOutputStream oos=new ObjectOutputStream(fos);   
	    oos.writeObject(object);   
	    oos.flush();   
	    oos.close();
	}
	public static Object readVO(Object object,String priKey) throws Exception
	{
		 File f = new File(save_path,object.getClass().getName()+"."+priKey);
		 FileInputStream fis=new FileInputStream(f);   
		 ObjectInputStream ois=new ObjectInputStream(fis);   
		 Object o =ois.readObject();   
		 ois.close();   
		 return o;

	}
}

package vo;

public class test {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		User user = new User();
		user.setId(1);
		user.setName("ty");
		user.setAddress("上海市浦东大道");
		
		try {
			IOUtil.saveVO(user, user.getId()+"");
			User u =(User)IOUtil.readVO(user,user.getId()+"");
			
			System.out.println(user.getId());
			System.out.println(user.getName());
			System.out.println(user.getAddress());
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

}