java.sql.SQLException: null,  message from server: "Host '172.16.13.45' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'"

com.mysql.jdbc.SQLError.createSQLException(SQLError.java.963)

com.mysql.jdbc.SQLError.createSQLException(SQLError.java.896)

com.mysql.jdbc.SQLError.createSQLException(SQLError.java.885)

com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java.1042)

com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java.2253)

com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java.2284)

com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java.2083)

com.mysql.jdbc.ConnectionImpl.

com.mysql.jdbc.JDBC4Connection.

sun.reflect.GeneratedConstructorAccessor69.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.404)

com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java.410)

com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java.328)

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)是不是驱动不对啊但是我数据库连接这里为什么又没有上传驱动的地方啊