问题描述：
本地开发环境idea中能正常运行项目，而idea打war包到Linux服务器的Tomcat下却不能正常运行，报如下错误：
09-Aug-2019 08:56:06.878 SEVERE [localhost-startStop-1] org.a One or more listeners failed to start. Full details will be found in the appropriate container log file 09-Aug-2019 08:56:06.924 SEVERE [localhost-startStop-1] org.a Context [] startup failed due to previous errors 09-Aug-2019 08:56:07.024 WARNING [localhost-startStop-1] org.a The web application [ROOT] registered the JDBC driver [com.alibaba.druid.] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered. 09-Aug-2019 08:56:07.024 WARNING [localhost-startStop-1] org.a The web application [ROOT] registered the JDBC driver [com.my] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.问题排查：
IDEA 打包环境JDK版本和Linux生产环境JDK版本不一致,导致线上Tomcat无法正常运行
解决方案：
- 1、确保两边环境安装相同的jdk版本
- 2、选择idea导航栏中Help -》Find Action，在弹框中输入Switch Boot JDK，在select Boot JDK中选择本机jdk版本，然后重启，在idea的Terminal运行java -version命令确认：
- 3、打包后检查war包内META-INF下的MANIFEST.MF文件,查看编译环境,确保jdk版本（get以下META-INF的作用）:
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