02-Jan-2019 11:38:29.551 信息 [http-nio-80-exec-6] com.alibaba.druid.pool.DruidDataSource.info {dataSource-1} inited
java.sql.SQLSyntaxErrorException: Unknown database 'stu;'
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:120)
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97)
at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122)
at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:835)
at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:455)
at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240)
at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:207)
at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1375)
at com.alibaba.druid.pool.DruidAbstractDataSource.createP
hysicalConnection(DruidAbstractDataSource.java:1431)
at com.alibaba.druid.pool.DruidDataSource.init(DruidDataSource.java:618)
at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:915)
at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:911)
at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:98)
at com.hbgc.utill.JDBCUtill.getConnection(JDBCUtill.java:24)
at com.hbgc.dao.LoginDao.login(LoginDao.java:16)
at com.hbgc.service.LoginService.isLogin(LoginService.java:16)

不要有分号，不然他认为分号也是数据库名字一部分