First, download the JDBC driver of SQLServer2000. There is this driver in Microsoft Site: Window operating system http://www.uncj.com/upload/files/ms_jdbc_setup.exe http://download.microsoft.com/download/3/0/F/30FF65D3-A84B -4B8A-A570-27366B2271D8 / setup.exeunix operating system MSSQLServer.tar http://download.microsoft.com/download/3/0/F/30FF65D3-A84B-4B8A-A570-27366B2271D8/MssqlServer.TAR II, installation JDBC Execute the MS_JDBC_SETUP.EXE executable, everything just click Next, until the Finish button appears, complete the installation. Note: (1) MS_JDBC_SETUP default installation path is: C: / Program Files / Microsoft SQL Server 2000 Driver for JDBC (2) This version (Version 2.2.0022) This only supports Microsoft SQL Server 2000 Driver for JDBC (3) Installation Directory / LIB / 9 JAR files are the JDBC driver core msbase.jarmssqlser.jarmsutil.jar we want to join the three JAR files in the above (3) to the environment variable to ClassPath: D: / Webserver / Lib / msbase.jar; d: /webserver/lib/msqlser.jar; d: /webserver/lib/msutil.jar Note: You can also save the above three files to your JVM machine's Java_Home / JRE / Lib / EXT directory, but it is not recommended to do it.