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jdbc不能连上数据库,已经创建了数据库的

作者:apnic 时间:2019-09-25 13:54:26 0 删除 编辑

Exception in thread "main" com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 't1;'

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)

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

at java.lang.reflect.Constructor.newInstance(Constructor.java:526)

at com.mysql.jdbc.Util.handleNewInstance(Util.java:409)

at com.mysql.jdbc.Util.getInstance(Util.java:384)

at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054)

at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3566)

at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3498)

at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:919)

at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:4004)

at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1284)

at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2312)

at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2122)

at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:774)

at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:49)

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)

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

at java.lang.reflect.Constructor.newInstance(Constructor.java:526)

at com.mysql.jdbc.Util.handleNewInstance(Util.java:409)

at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:375)

at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:289)

at java.sql.DriverManager.getConnection(DriverManager.java:571)

at java.sql.DriverManager.getConnection(DriverManager.java:215)

at sql.dbutil.main(dbutil.java:24)

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