public static ThreadPoolExecutor newExecutor(int corePoolSize) {
		ExecutorBuilder builder = ExecutorBuilder.create();
		if (corePoolSize > 0) {
			builder.setCorePoolSize(corePoolSize);
		}
		return builder.build();
	}
@Test
	public void newExecutorTest(){
		ThreadPoolExecutor executor = ThreadUtil.newExecutor(5);
		// 查询线程池 线程数
		assertEquals(5, executor.getCorePoolSize());
	}