多线程丢失数据

线程池配置

@Configuration

public class ExecutorConfig {

private static int CORE_POOL_SIZE =10;

private static int MAX_POOL_SIZE =32;

@Bean

  public ThreadPoolTaskExecutor taskExecutor() {

ThreadPoolTaskExecutor poolTaskExecutor =new ThreadPoolTaskExecutor();

//线程池维护线程的最少数量

      poolTaskExecutor.setCorePoolSize(CORE_POOL_SIZE);

//线程池维护线程的最大数量

      poolTaskExecutor.setMaxPoolSize(MAX_POOL_SIZE);

//线程池所使用的缓冲队列

      poolTaskExecutor.setQueueCapacity(1800);

//线程池维护线程所允许的空闲时间

      poolTaskExecutor.setKeepAliveSeconds(300);

poolTaskExecutor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());

return poolTaskExecutor;

}

}

服务类配置

@Slf4j

@Service

public class ExecutorService {

@Autowired

  private ThreadPoolTaskExecutorexecutor;

public void forTest() {

List list = Collections.synchronizedList(new ArrayList<>());

for (int i =1; i <=3000; i++) {

list.add(i);

}

executor.execute(() -> {

for(int i :list){

System.out.println(i);

}

});

}

}

测试类

@RunWith(SpringRunner.class)

@SpringBootTest

public class ExecutorServiceTest {

@Autowired

  private ExecutorServiceexecutorServiceTest;

@Test

  public void forTest()throws Exception {

executorServiceTest.forTest();

}

}

输出结果会少数据。求解答