Io 异常: The Network Adapter could not establish the connection

Io 异常: The Network Adapter could not establish the connection 我使用mybatis-generate自动生成代码，使用oracle数据库，报错 我的原因是把jdbc:oracle:thin:@10.2.7.7:1521:orcl 改成jdbc:oracle:thin:@localhost:1521:orcl

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