Mysql的服务器版本是5.7.23，然后下载的帆软是10.0.17，我看到软件自带的链接驱动是mysql-connector-java-5.1.49-bin，这些都没问题。

链接信息也是如下，这里也不知道哪儿有问题。

但是还是链接不上：

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database '1212'

sun.reflect.GeneratedConstructorAccessor148.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.425)

com.mysql.jdbc.Util.getInstance(Util.java.408)

com.mysql.jdbc.SQLError.createSQLException(SQLError.java.944)

com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java.3978)

com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java.3914)

com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java.871)

com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java.1714)

com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java.1224)

com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java.2199)

com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java.2230)

com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java.2025)

com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java.778)

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

sun.reflect.GeneratedConstructorAccessor142.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.425)

com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java.386)

com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java.330)

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)

来个大神救救吧，这也太难了，连接个数据库链接了一天了，折磨死了。