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資料庫連線異常-----驅動

阿新 • • 發佈：2019-02-13

    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection holder error
java.sql.SQLException: Unknown system variable 'tx_isolation'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3536)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3468)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1957)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2107)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1451)
    at com.mysql.jdbc.ConnectionImpl.getTransactionIsolation(ConnectionImpl.java:3216)
    at com.alibaba.druid.pool.DruidConnectionHolder.<init>(DruidConnectionHolder.java:98)
    at com.alibaba.druid.pool.DruidDataSource.put(DruidDataSource.java:1704)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1873)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection error
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.Util.getInstance(Util.java:381)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1102)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:773)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1375)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1431)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1844)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection error
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.Util.getInstance(Util.java:381)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1102)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:773)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1375)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1431)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1844)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection error
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.Util.getInstance(Util.java:381)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1102)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:773)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1375)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1431)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1844)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection error
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.Util.getInstance(Util.java:381)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1102)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:773)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1375)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1431)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1844)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection error
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.Util.getInstance(Util.java:381)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1102)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:773)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1375)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1431)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1844)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection error
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.Util.getInstance(Util.java:381)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1102)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:773)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1375)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1431)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1844)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection error
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.Util.getInstance(Util.java:381)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1102)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:773)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1375)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1431)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1844)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection error
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.Util.getInstance(Util.java:381)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1102)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:773)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1375)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1431)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1844)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection error
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.Util.getInstance(Util.java:381)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1102)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:773)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1375)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1431)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1844)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection error
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.Util.getInstance(Util.java:381)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1102)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:773)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1375)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1431)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1844)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection error
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.Util.getInstance(Util.java:381)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1102)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:773)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1375)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1431)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1844)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection error
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.Util.getInstance(Util.java:381)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1102)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:773)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1375)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1431)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1844)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection error
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.Util.getInstance(Util.java:381)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1102)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:773)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1375)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1431)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1844)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection error
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.Util.getInstance(Util.java:381)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1102)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:773)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1375)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1431)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1844)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection error
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.Util.getInstance(Util.java:381)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1102)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:773)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1375)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1431)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1844)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection error
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.Util.getInstance(Util.java:381)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1102)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:773)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1375)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1431)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1844)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection error
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"
    at sun.reflect.GeneratedConstructorAccessor18.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.Util.getInstance(Util.java:381)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1102)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:773)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1375)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1431)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1844)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection error
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"
    at sun.reflect.GeneratedConstructorAccessor18.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.Util.getInstance(Util.java:381)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1102)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:773)
    at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
    at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:352)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1375)
    at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1431)
    at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1844)
ERROR [Druid-ConnectionPool-Create-1268905288] - create connection error
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection,  message from server: "Too many connections"
    at sun.reflect.GeneratedConstructorAccessor18.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.Util.getInstance(Util.java:381)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1102)
    at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2142)
    at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:773)
    at com.mys

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