public static String escapeHtml4(CharSequence html) {
		Html4Escape escape = new Html4Escape();
		return escape.replace(html).toString();
	}
@Test
	public void escapeHtml4Test() {
		String escapeHtml4 = EscapeUtil.escapeHtml4("<a>你好</a>");
		assertEquals("&lt;a&gt;你好&lt;/a&gt;", escapeHtml4);

		String result = EscapeUtil.unescapeHtml4("&#25391;&#33633;&#22120;&#31867;&#22411;");
		assertEquals("振荡器类型", result);

		String escape = EscapeUtil.escapeHtml4("*@-_+./(123你好)");
		assertEquals("*@-_+./(123你好)", escape);
	}