public boolean login() {
		boolean flag = false;
		String sql = "SELECT * FROM db99527iu6w4ye96.users where username = '"+ username+"'";
		System.out.println(sql);
		Connection conn = (Connection) SQLconnect.getConnection();
		try {
			Statement st = (Statement) conn.createStatement(); // 创建用于执行静态sql语句的Statement对象
			ResultSet rs = st.executeQuery(sql); // 执行查询操作的sql语句，并返回插入数据的个数
			while (rs.next()) {
				String sqlpassword = rs.getString("password");
				System.out.println(sqlpassword);
				System.out.println(password);
				if(sqlpassword.equals(password)){
					flag = true;
				}
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return flag;
	}