dm.jdbc.driver.DMException: 网络通信异常

dm.jdbc.driver.DMException: 网络通信异常

dm.jdbc.driver.DMException: 网络通信异常
at dm.jdbc.driver.DBError.throwException(DBError.java:774)
at dm.jdbc.a.a.init(DBAccess.java:185)
at dm.jdbc.a.a.(DBAccess.java:157)
at dm.jdbc.driver.DmdbConnection.openConnection(DmdbConnection.java:638)
at dm.jdbc.desc.EP.connect(EP.java:159)
at dm.jdbc.desc.EPGroup$EPSelector.select(EPGroup.java:395)atdm.jdbc.desc.EPGroup.connect(EPGroup.java:278)atdm.jdbc.driver.DmDriver.d{o}_{c}onnect(DmDriver.java:163)atdm.jdbc.driver.DmDriver.connect(DmDriver.java:449)atcom.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1464)atcom.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1529)atcom.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2179)
Caused by: java.net.ConnectException: connect: Address is invalid on local machine, or port is not valid on remote machine
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:83)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:606)
at dm.jdbc.a.a.init(DBAccess.java:173)
… 10 common frames omitted

解决方案: 因为达梦的数据库驱动不支持选择数据库；

比如jdbc:dm://127.0.0.1:5236/SYSDBA?serverTimezone=UTC&useSSL=false&useUnicode=true&characterEncoding=utf-8

你需要选择为jdbc:dm://127.0.0.1:5236 ，这样是可以连接的，

如果需要加后面的参数需要升级达梦8的驱动；

达梦官网驱动下载: https://eco.dameng.com/download/

进入下载地址往下滑，因为上面是安装包，驱动在最下面；

升级驱动之后就可以了；

总结： dm.jdbc.driver.DMException: 网络通信异常 ，解决方案：升级达梦8驱动

最后祝您工作顺利！