com.bootcamp.utils.IdGen.java Source code

Introduction

Here is the source code for com.bootcamp.utils.IdGen.java

Source

/**
 * Copyright &copy; 2012-2013 <a href="https://github.com/thinkgem/jeesite">JeeSite</a> All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 */
package com.bootcamp.utils;

import org.activiti.engine.impl.cfg.IdGenerator;
import org.apache.shiro.session.Session;
import org.apache.shiro.session.mgt.eis.SessionIdGenerator;
import org.springframework.context.annotation.Lazy;
import org.springframework.stereotype.Service;

import java.io.Serializable;
import java.security.SecureRandom;
import java.util.UUID;

/**
 * ????ID.
 * @author ThinkGem
 * @version 2013-01-15
 */
@Service
@Lazy(false)
public class IdGen implements IdGenerator, SessionIdGenerator {

    private static SecureRandom random = new SecureRandom();

    /**
     * ?JDKUUID, Random?, -.
     */
    public static String uuid() {
        return UUID.randomUUID().toString().replaceAll("-", "");
    }

    /**
     * SecureRandom??Long. 
     */
    public static long randomLong() {
        return Math.abs(random.nextLong());
    }

    /**
     * Base62?SecureRandom??bytes.
     */
    public static String randomBase62(int length) {
        byte[] randomBytes = new byte[length];
        random.nextBytes(randomBytes);
        return Encodes.encodeBase62(randomBytes);
    }

    /**
     * Activiti ID ?
     */
    //@Override
    public String getNextId() {
        return IdGen.uuid();
    }

    //@Override
    public Serializable generateId(Session session) {
        return IdGen.uuid();
    }

    public static void main(String[] args) {
        System.out.println(IdGen.uuid());
        System.out.println(IdGen.uuid().length());
        System.out.println(new com.bootcamp.utils.IdGen().getNextId());
    }

}