public static String delFirst(String regex, CharSequence content) {
		if (StrUtil.hasBlank(regex, content)) {
			return StrUtil.str(content);
		}

		final Pattern pattern = PatternPool.get(regex, Pattern.DOTALL);
		return delFirst(pattern, content);
	}
@Test
	public void delFirstTest() {
		// 删除第一个匹配到的内容
		final String resultDelFirst = ReUtil.delFirst("(\\w)aa(\\w)", content);
		assertEquals("ZZbbbccc中文1234", resultDelFirst);
	}