public static String cleanHtmlTag(String content) {
		return content.replaceAll(RE_HTML_MARK, "");
	}
@Test
	public void cleanHtmlTagTest() {
		//非闭合标签
		String str = "pre<img src=\"xxx/dfdsfds/test.jpg\">";
		String result = HtmlUtil.cleanHtmlTag(str);
		assertEquals("pre", result);

		//闭合标签
		str = "pre<img>";
		result = HtmlUtil.cleanHtmlTag(str);
		assertEquals("pre", result);

		//闭合标签
		str = "pre<img src=\"xxx/dfdsfds/test.jpg\" />";
		result = HtmlUtil.cleanHtmlTag(str);
		assertEquals("pre", result);

		//闭合标签
		str = "pre<img />";
		result = HtmlUtil.cleanHtmlTag(str);
		assertEquals("pre", result);

		//包含内容标签
		str = "pre<div class=\"test_div\">dfdsfdsfdsf</div>";
		result = HtmlUtil.cleanHtmlTag(str);
		assertEquals("predfdsfdsfdsf", result);

		//带换行
		str = "pre<div class=\"test_div\">\r\n\t\tdfdsfdsfdsf\r\n</div><div class=\"test_div\">BBBB</div>";
		result = HtmlUtil.cleanHtmlTag(str);
		assertEquals("pre\r\n\t\tdfdsfdsfdsf\r\nBBBB", result);
	}