java:jdbc連teradata報了個錯

今天試着直接用jdbc連一下Teradata，報了下面的錯：

GSSException: Failure unspecified at GSS-API level (Mechanism level: UserFile parameter null)
 at com.teradata.tdgss.jtdgss.TdgssParseXml.<init>(DashoA1*..)
 at com.teradata.tdgss.jtdgss.TdgssConfigApi.<init>(DashoA1*..)
 at com.teradata.tdgss.jtdgss.TdgssManager.<init>(DashoA1*..)
 at com.teradata.tdgss.jtdgss.TdgssManager.getInstance(DashoA1*..)
 at com.teradata.jdbc.jdbc.GenericTeraEncrypt.getGSSM(GenericTeraEncrypt.java:622)
 at com.teradata.jdbc.jdbc.GenericTeraEncrypt.getConfig(GenericTeraEncrypt.java:640)
 at com.teradata.jdbc.jdbc.GenericTeraEncrypt.getUserNameForOid(GenericTeraEncrypt.java:733)
 at com.teradata.jdbc.AuthMechanism.<init>(AuthMechanism.java:50)
 at com.teradata.jdbc.jdbc.GenericInitDBConfigState.action(GenericInitDBConfigState.java:104)
 at com.teradata.jdbc.jdbc.GenericLogonController.run(GenericLogonController.java:49)
 at com.teradata.jdbc.jdbc_4.TDSession.<init>(TDSession.java:201)
 at com.teradata.jdbc.jdbc_3.ifjdbc_4.TeraLocalConnection.<init>(TeraLocalConnection.java:99)
 at com.teradata.jdbc.jdbc.ConnectionFactory.createConnection(ConnectionFactory.java:54)
 at com.teradata.jdbc.TeraDriver.doConnect(TeraDriver.java:218)
 at com.teradata.jdbc.TeraDriver.connect(TeraDriver.java:151)
 at java.sql.DriverManager.getConnection(DriverManager.java:512)
 at java.sql.DriverManager.getConnection(DriverManager.java:171)
 at myservlet.Action.main(Action.java:48)

查了一會，發現原來Teradata須要3個包，而我只給了1個包。

terajdbc4.jar

tdgssjava.jar

tdgssconfig.jar

說實話，我以爲Teradata將jdbc所需設計成3個包也許是個缺陷吧，對初學者不友好噢。