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POJava Driver.getConnection() yields "Connection Refused" from mysql on live system, not dev
 

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    <p>Pretty straightforward stuff, here -- I'm just not good enough with mysql to understand what it wants from me.</p> <p>I've got a short java test-case that opens a connection on mysql on my dev system but, when I try to put it to my server, it fails.</p> <p>Any help in tracking this down would be most appreciated.</p> <p>Thanks!</p> <p><strong>Test Code</strong></p> <pre><code>import java.util.*; import java.sql.*; public class mysqltest { static public void getDBConnection() { System.out.println ("Start of getDBConnection."); Connection conn = null; String url = "jdbc:mysql://localhost:3306/"; String dbName = "magnets_development"; String driver = "com.mysql.jdbc.Driver"; String userName = "*****"; // blanked for publication String password = "*****"; try { Class.forName (driver).newInstance(); System.out.println ("driver.newInstance gotten."); conn = DriverManager.getConnection (url+dbName, userName, password); System.out.println ("Connection gotten: " + conn + "."); Statement sql = conn.createStatement (); ResultSet results = sql.executeQuery ("use " + dbName + ";"); } catch (Exception ex) { System.out.println ("*** Got exception."); ex.printStackTrace(); } } public static void main(String args[]) { System.out.println ("Main started."); mysqltest.getDBConnection(); } } </code></pre> <p><strong>Dev System Output</strong> <em>(Expected/correct response)</em></p> <pre><code>olie$ java mysqltest Main started. Start of getDBConnection. Properties set. driver.newInstance gotten. Connection gotten: com.mysql.jdbc.Connection@c980c9. olie$ </code></pre> <p><strong>Server Output</strong> <em>(Error I'm trying to track-down)</em> (Some blank lines removed.)</p> <pre><code>mini$ java mysqltest Main started. Start of getDBConnection. Properties set. driver.newInstance gotten. *** Got exception. com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception: ** BEGIN NESTED EXCEPTION ** java.net.ConnectException MESSAGE: Connection refused STACKTRACE: java.net.ConnectException: Connection refused at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333) at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:432) at java.net.Socket.connect(Socket.java:520) at java.net.Socket.connect(Socket.java:470) at java.net.Socket.&lt;init&gt;(Socket.java:367) at java.net.Socket.&lt;init&gt;(Socket.java:209) at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:256) at com.mysql.jdbc.MysqlIO.&lt;init&gt;(MysqlIO.java:271) at com.mysql.jdbc.Connection.createNewIO(Connection.java:2771) at com.mysql.jdbc.Connection.&lt;init&gt;(Connection.java:1555) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:285) at java.sql.DriverManager.getConnection(DriverManager.java:525) at java.sql.DriverManager.getConnection(DriverManager.java:140) at mysqltest.getDBConnection(mysqltest.java:34) at mysqltest.main(mysqltest.java:49) ** END NESTED EXCEPTION ** Last packet sent to the server was 3 ms ago. at com.mysql.jdbc.Connection.createNewIO(Connection.java:2847) at com.mysql.jdbc.Connection.&lt;init&gt;(Connection.java:1555) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:285) at java.sql.DriverManager.getConnection(DriverManager.java:525) at java.sql.DriverManager.getConnection(DriverManager.java:140) at mysqltest.getDBConnection(mysqltest.java:34) at mysqltest.main(mysqltest.java:49) mini$ </code></pre>
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