我想用Java连接hana数据库 可是我发现我没有hana 的包

阿西吧~要去哪下载ngdbc.jar?

帮你查了一下：
Install the JDBC driver.
The driver (ngdbc.jar) is installed as part of the SAP HANA client installation and is located at:
C:\Program Files\sap\hdbclient\ on Microsoft Windows platforms
/usr/sap/hdbclient/ on Linux and UNIX platforms

参考文档：http://help.sap.com/saphelp_hanaplatform/helpdata/en/ff/15928cf5594d78b841fbbe649f04b4/content.htm

在sap的安装目录下。