uuidgener.java

简单的web应用,实现基本的购物车功能,有良好的扩展性

package util.uid;

import java.io.BufferedWriter;
import java.io.FileWriter;

public class UUIDGener
{

    public UUIDGener()
    {
    }

    public static String getUUID()
    {
        return uuid.getNextUID();
    }

    public static void main(String args[])
    {
        try
        {
            BufferedWriter fw = new BufferedWriter(new FileWriter("d:\\id.txt"));
            for(int i = 1; i < 10000; i++)
            {
                fw.write(uuid.getNextUID());
                fw.write(System.getProperty("line.separator"));
            }

            fw.close();
        }
        catch(Exception ex)
        {
            ex.printStackTrace();
        }
    }

    private static UIDFactory uuid = null;

    static
    {
        try
        {
            uuid = UIDFactory.getInstance("UUID");
        }
        catch(UIDNotSupportException unsex) { }
    }
}