public static byte[] gzip(String content, String charset) throws UtilException {
		return gzip(StrUtil.bytes(content, charset));
	}
@Test
	public void gzipTest() {
		final String data = "我是一个需要压缩的很长很长的字符串";
		final byte[] bytes = StrUtil.utf8Bytes(data);
		final byte[] gzip = ZipUtil.gzip(bytes);

		//保证gzip长度正常
		assertEquals(68, gzip.length);

		final byte[] unGzip = ZipUtil.unGzip(gzip);
		//保证正常还原
		assertEquals(data, StrUtil.utf8Str(unGzip));
	}