随机ID生成工具

package com.nari.common.utils;
import java.util.concurrent.atomic.AtomicInteger;
public class IdUtilV2 {
    private static final AtomicInteger ids = new AtomicInteger(1);
    private IdUtilV2() {
    }
    public static String getIdStr() {
        return getId().toString();
    }
    public static Long getId() {
        return System.nanoTime() + Thread.currentThread().getId() + (ids.getAndIncrement());
    }
}