問題描述：
本地開發環境idea中能正常運行項目，而idea打war包到Linux服務器的Tomcat下卻不能正常運行，報如下錯誤：
09-Aug-2019 08:56:06.878 SEVERE [localhost-startStop-1] org.apache.catalina.core.StandardContext.startInternal 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.apache.catalina.core.StandardContext.startInternal Context [] startup failed due to previous errors
09-Aug-2019 08:56:07.024 WARNING [localhost-startStop-1] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesJdbc The web application [ROOT] registered the JDBC driver [com.alibaba.druid.proxy.DruidDriver] 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.apache.catalina.loader.WebappClassLoaderBase.clearReferencesJdbc The web application [ROOT] registered the JDBC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
問題排查：
IDEA 打包環境JDK版本和Linux生產環境JDK版本不一致,導致線上Tomcat無法正常運行
解決方案：
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1、確保兩邊環境安裝相同的jdk版本
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2、選擇idea導航欄中Help -》Find Action，在彈框中輸入Switch Boot JDK，在select Boot JDK中選擇本機jdk版本，然后重啟，在idea的Terminal運行java -version命令確認：
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3、打包后檢查war包內META-INF下的MANIFEST.MF文件,查看編譯環境,確保jdk版本（get以下META-INF的作用）:
Manifest-Version: 1.0
Built-By: Administrator
Created-By: Apache Maven 3.5.0
Build-Jdk: 1.8.0_161