public static Db use() {
		return use(DSFactory.get());
	}
@Test
	public void pageWithParamsTest() throws SQLException {
		String sql = "select * from user where name = ?";
		PageResult<Entity> result = Db.use().page(
				sql, Page.of(0, 3), "张三");

		assertEquals(2, result.getTotal());
		assertEquals(1, result.getTotalPage());
		assertEquals(2, result.size());
	}