Re: windows - tomcat - jdbc - "unable to connect" linux instead of windows is fine
Posted by: Niels
Date: December 30, 2004 04:09PM

I removed alll versions and tried 2 connectors, I have tried to place them in 2 positions (WEB-INF/lib & lib/ext) with the same errors:

mysql-connector-java-3.1.5-gamma-bin.jar:

SQL Error
Communications link failure due to underlying exception: ** BEGIN NESTED EXCEPTION ** java.lang.NullPointerException STACKTRACE: java.lang.NullPointerException at java.lang.String.getBytes(Unknown Source) at com.mysql.jdbc.Connection.checkServerEncoding(Connection.java:2699) at com.mysql.jdbc.Connection.initializePropsFromServer(Connection.java:3161) at com.mysql.jdbc.Connection.createNewIO(Connection.java:1706) at com.mysql.jdbc.Connection.(Connection.java:405) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:268) at java.sql.DriverManager.getConnection(Unknown Source) at java.sql.DriverManager.getConnection(Unknown Source) at org.apache.jsp.db_002dtest_jsp._jspService(org.apache.jsp.db_002dtest_jsp:64) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:99) at

and for mysql-connector-java-3.0.16-ga-bin.jar:

SQL Error
Unable to connect to any hosts due to exception: java.lang.NullPointerException ** BEGIN NESTED EXCEPTION ** java.lang.NullPointerException STACKTRACE: java.lang.NullPointerException at java.lang.String.getBytes(Unknown Source) at com.mysql.jdbc.Connection.checkServerEncoding(Connection.java:2535) at com.mysql.jdbc.Connection.initializePropsFromServer(Connection.java:3288) at com.mysql.jdbc.Connection.createNewIO(Connection.java:1803) at com.mysql.jdbc.Connection.(Connection.java:450) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:411) at java.sql.DriverManager.getConnection(Unknown Source) at java.sql.DriverManager.getConnection(Unknown Source) at org.apache.jsp.db_002dtest_jsp._jspService(org.apache.jsp.db_002dtest_jsp:64) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:99) at

Still have no clue what is going on..

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