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【DM版本】:DM8
【操作系统】：centos7
【CPU】:
【问题描述】*：在我的本地Windows，我能够通过dberave进行数据库连接，同时我本地的java服务也可以正常连接，但是我打包后带到了服务器上，反而就无法连接了，返回的错误信息为

Caused by: dm.jdbc.driver.DMException: 网络通信异常
	at dm.jdbc.driver.DBError.throwException(SourceFile:807)
	at dm.jdbc.a.a.init(SourceFile:207)
	at dm.jdbc.a.a.<init>(SourceFile:174)
	at dm.jdbc.driver.DmdbConnection.openConnection(SourceFile:693)
	at dm.jdbc.internal.conf.EP.connect(SourceFile:143)
	at dm.jdbc.internal.conf.EPGroup$EPSelector.select(SourceFile:501)
	at dm.jdbc.internal.conf.EPGroup.connect(SourceFile:345)
	at dm.jdbc.driver.DmDriver.do_connect(SourceFile:164)
	at dm.jdbc.driver.DmDriver.connect(SourceFile:450)
	at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
	at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:251)
	at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
	at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1669)
	at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1733)
	at com.alibaba.druid.pool.DruidDataSource.init(DruidDataSource.java:924)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.base/java.lang.reflect.Method.invoke(Unknown Source)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:1930)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1872)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800)
	... 79 more
Caused by: java.net.ConnectException: 拒绝连接 (Connection refused)
	at java.base/java.net.PlainSocketImpl.socketConnect(Native Method)
	at java.base/java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
	at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
	at java.base/java.net.AbstractPlainSocketImpl.connect(Unknown Source)
	at java.base/java.net.SocksSocketImpl.connect(Unknown Source)
	at java.base/java.net.Socket.connect(Unknown Source)
	at dm.jdbc.a.c.d(SourceFile:110)
	at dm.jdbc.a.c.b(SourceFile:68)
	at dm.jdbc.a.c.g(SourceFile:1)
	at dm.jdbc.a.a.init(SourceFile:201)
	... 99 more