public static StackTraceElement getRootStackElement() {
		final StackTraceElement[] stackElements = Thread.currentThread().getStackTrace();
		return Thread.currentThread().getStackTrace()[stackElements.length - 1];
	}
@Test
	public void getRootTest() {
		// 查找入口方法
		StackTraceElement ele = ExceptionUtil.getRootStackElement();
		assertEquals("main", ele.getMethodName());
	}