java多執行緒建立方式
阿新 • • 發佈:2022-01-26
int corePoolSize = 20; int maximumPoolSize = 40; long keepAliveTime = 20; TimeUnit unit = TimeUnit.SECONDS; BlockingQueue<Runnable> workQueue = new ArrayBlockingQueue<>(5000); ThreadPoolExecutor executor = new ThreadPoolExecutor(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue);protected void process(Date data) { executor.execute(new Runnable() { @Override public void run() { try { long start = new Date().getTime(); //實際處理的方法
handle(data);
long end = new Date().getTime(); log.info("data key :" + data.getKey() + ",time:" + (end - start) + "ms" + ",workQueue size" + workQueue.remainingCapacity()); if (workQueue.remainingCapacity() < 500) { log.error("work queue nearly full :data key:" + data.getKey() + ",time:" + (end - start) + "ms" + ",workQueue size" + workQueue.remainingCapacity()); } }catch (Exception e) { log.error("process error", e); } } }); }
1. 傳入的資料Data,要設定唯一key,在日誌中列印key
2.剩餘執行緒數不足時,列印錯誤日誌
3.handle(data)是實際的處理方法。