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SQL Exception

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Apr 22nd, 2018
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  1. java.sql.SQLException: Cannot create PoolableConnectionFactory (Could not create connection to database server.)
  2. at org.apache.tomcat.dbcp.dbcp2.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:2333)
  3. at org.apache.tomcat.dbcp.dbcp2.BasicDataSource.createDataSource(BasicDataSource.java:2062)
  4. at org.apache.tomcat.dbcp.dbcp2.BasicDataSource.getConnection(BasicDataSource.java:1532)
  5. at com.jsptanulas.web.jdbc.TestServlet.doGet(TestServlet.java:40)
  6. at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
  7. at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
  8. at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
  9. at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
  10. at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
  11. at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
  12. at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
  13. at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
  14. at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)
  15. at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:496)
  16. at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
  17. at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
  18. at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
  19. at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
  20. at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)
  21. at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1132)
  22. at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)
  23. at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1539)
  24. at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1495)
  25. at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
  26. at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
  27. at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
  28. at java.base/java.lang.Thread.run(Thread.java:844)
  29. Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server.
  30. at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
  31. at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
  32. at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
  33. at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:488)
  34. at com.mysql.jdbc.Util.handleNewInstance(Util.java:404)
  35. at com.mysql.jdbc.Util.getInstance(Util.java:387)
  36. at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:917)
  37. at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:896)
  38. at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:885)
  39. at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:860)
  40. at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2332)
  41. at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2085)
  42. at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:795)
  43. at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:44)
  44. at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
  45. at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
  46. at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
  47. at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:488)
  48. at com.mysql.jdbc.Util.handleNewInstance(Util.java:404)
  49. at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:400)
  50. at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:327)
  51. at org.apache.tomcat.dbcp.dbcp2.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:38)
  52. at org.apache.tomcat.dbcp.dbcp2.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:260)
  53. at org.apache.tomcat.dbcp.dbcp2.BasicDataSource.validateConnectionFactory(BasicDataSource.java:2343)
  54. at org.apache.tomcat.dbcp.dbcp2.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:2329)
  55. ... 26 more
  56. Caused by: java.lang.NullPointerException
  57. at com.mysql.jdbc.ConnectionImpl.getServerCharset(ConnectionImpl.java:3005)
  58. at com.mysql.jdbc.MysqlIO.sendConnectionAttributes(MysqlIO.java:1916)
  59. at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1845)
  60. at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1215)
  61. at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2255)
  62. at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2286)
  63. ... 40 more
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