Java.net.ConnectException: Connection refused: connect

java.net.DualStackPlainSocketImpl.connect0(DualStackPlainSocketImpl.java.-2)

java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java.79)

java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java.350)

java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java.206)

java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java.188)

java.net.PlainSocketImpl.connect(PlainSocketImpl.java.172)

java.net.SocksSocketImpl.connect(SocksSocketImpl.java.392)

java.net.Socket.connect(Socket.java.589)

com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java.211)

com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java.299)

com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java.2187)

com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java.2220)

com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java.2015)

com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java.768)

com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java.47)

sun.reflect.GeneratedConstructorAccessor191.newInstance(null.-1)

sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java.45)

java.lang.reflect.Constructor.newInstance(Constructor.java.423)

com.mysql.jdbc.Util.handleNewInstance(Util.java.403)

com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java.385)

com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java.323)

com.fr.third.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java.1461)

com.fr.third.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java.1525)

com.fr.third.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java.2165)