public static String escape(String text) {
		return encode(text);
	}
@Test
	public void escapeTest2() {
		final char c = ' '; // 不断开空格（non-breaking space，缩写nbsp。)
		assertEquals(c, 160);
		final String html = "<html><body> </body></html>";
		final String escape = HtmlUtil.escape(html);
		assertEquals("&lt;html&gt;&lt;body&gt;&nbsp;&lt;/body&gt;&lt;/html&gt;", escape);
		assertEquals(" ", HtmlUtil.unescape("&nbsp;"));
	}