java.sql.SQLException:IO 错误:The Network Adapter could not establish the connection启动tomcat项目出现报错,请问该怎么解决

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java.sql.SQLException:IO错误:TheNetworkAdaptercouldnotestablishtheconnection启动tomcat项目出现报错,请问该怎么解决java

java.sql.SQLException:IO 错误:The Network Adapter could not establish the connection启动tomcat项目出现报错,请问该怎么解决
java.sql.SQLException:IO 错误:The Network Adapter could not establish the connection
启动tomcat项目出现报错,请问该怎么解决

java.sql.SQLException:IO 错误:The Network Adapter could not establish the connection启动tomcat项目出现报错,请问该怎么解决
连接不上,要连什么数据库?
Orale?