java.net.NoRouteToHostException: No route to host

1、错误描述

Caused by: com.microsoft.sqlserver.jdbc.SQLServerException: The TCP/IP connection to the host  has failed. java.net.NoRouteToHostException: No route to host
	
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(Unknown Source)
	
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(Unknown Source)
	
at com.microsoft.sqlserver.jdbc.SQLServerConnection.loginWithoutFailover(Unknown Source)
	
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(Unknown Source)
	
at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(Unknown Source)
	
at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:148)
	
at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:211)
	
at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:142)
	
at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1377)
	at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(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 org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111)
	
at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77)
	... 40 more

2、错误原因

     由错误提示可知，是由于网络或路由器的原因，导致异常网络

3、解决办法

（1）检查连接网络的路由器

（2）检查连接网络的网线和接线情况