Exception in thread "main" java.sql.SQLException: Io 错误: The Network A

Exception in thread "main" java.sql.SQLException: Io 异常: The Network Adapter cou
Exception in thread "main" java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection

报了这个错误，查查原因，原来是IP没有改成我本地IP，换了机器的原因啊。