多线程

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

推荐：》》》
 ThreadPoolExecutor threadPoolExecutor = new ThreadPoolExecutor(5,
                10,
                5,
                TimeUnit.SECONDS,
                new ArrayBlockingQueue(2),
                Executors.defaultThreadFactory(),
                new ThreadPoolExecutor.DiscardOldestPolicy());

        for (int i = 0; i < 6; i++) {
            try {
                threadPoolExecutor.execute(()->{
                    order.setOrderType(101);
                    order.setCustomerId(100);
                    order.setAmount(new BigDecimal(100100));
                    int mies = userService.insertOrder(order);
                });
                return 1;
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                threadPoolExecutor.shutdown();
            }

        }