MYSQL : "Can't get hostname for your address"

    在做Docker集成WEB项目时，tomcat容器正常启动，MySQL容器正常启动，只是外部访问tomcat进行数据库操作时，应用报错如下： Last packet sent to the server was 0 ms ago.); nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create

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