线程池的简单使用

//获取第三方数据接口demo
public void updatePlcParams(Set<String> stringSet) {
    log.info(" === updatePlcParams() 更新plc数据开始 ========");
    long start = System.currentTimeMillis();
    /** 获取cpu核心数：*/
    int nThreads = Runtime.getRuntime().availableProcessors();
    log.debug(" === 启动线程数 =" + nThreads);
    ExecutorService fixedThreadPool = Executors.newFixedThreadPool(nThreads);
    try {
        for (String paramUrl : stringSet) {
            fixedThreadPool.execute(new Runnable() {
                @Override
                public void run() {
                    // long start1 = System.currentTimeMillis();
                    String result = finishingPlcService.cachePut(paramUrl);
                    // long time1 = System.currentTimeMillis() - start1;
                    // log.debug(" >>>>   "+paramUrl+" :"+result +"  >>> time:"+time1);
                }
            });
        }

    } catch (Exception e) {
        log.warn(e.getMessage(), e);
    } finally {
        fixedThreadPool.shutdown();//关闭

        while (true) {
            if (fixedThreadPool.isTerminated()) {
                long time = System.currentTimeMillis() - start;
                log.info("[" + DateConvertUtils.now() + "]:" + "=== updatePlcParams() 更新plc数据结束了，总耗时：" + time + " ms(毫秒)！\n");
                break;
            }
        }
    }
}