之前一直好好的，突然就这样啦

Connected to server

[2021-01-10 02:32:21,908] Artifact icake:war exploded: Artifact is being deployed, please wait...

10-Jan-2021 14:32:23.545 淇℃伅 [RMI TCP Connection(5)-127.0.0.1] org.apache.jasper.servlet.TldScanner.scanJars 鑷冲皯鏈変竴涓狫AR琚壂鎻忕敤浜嶵LD浣嗗皻鏈寘鍚玊LD銆� 涓烘璁板綍鍣ㄥ惎鐢ㄨ皟璇曟棩蹇楄褰曪紝浠ヨ幏鍙栧凡鎵弿浣嗘湭鍦ㄥ叾涓壘鍒癟LD鐨勫畬鏁碕AR鍒楄〃銆� 鍦ㄦ壂鎻忔湡闂磋烦杩囦笉闇�瑕佺殑JAR鍙互缂╃煭鍚姩鏃堕棿鍜孞SP缂栬瘧鏃堕棿銆�

10-Jan-2021 14:32:31.854 淇℃伅 [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory 鎶妛eb 搴旂敤绋嬪簭閮ㄧ讲鍒扮洰褰� [D:\java\tomcat-8.5.50\webapps\manager]

10-Jan-2021 14:32:32.049 淇℃伅 [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [D:\java\tomcat-8.5.50\webapps\manager] has finished in [195] ms

10-Jan-2021 14:32:32.332 涓ラ噸 [RMI TCP Connection(5)-127.0.0.1] org.apache.catalina.core.StandardContext.startInternal One or more listeners failed to start. Full details will be found in the appropriate container log file

10-Jan-2021 14:32:32.334 涓ラ噸 [RMI TCP Connection(5)-127.0.0.1] org.apache.catalina.core.StandardContext.startInternal Context [] startup failed due to previous errors

10-Jan-2021 14:32:32.338 璀﹀憡 [RMI TCP Connection(5)-127.0.0.1] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesJdbc Web搴旂敤绋嬪簭 [ROOT] 娉ㄥ唽浜咼DBC椹卞姩绋嬪簭 [com.mysql.cj.jdbc.Driver]锛屼絾鍦╓eb搴旂敤绋嬪簭鍋滄鏃舵棤娉曟敞閿�瀹冦�� 涓洪槻姝㈠唴瀛樻硠婕忥紝JDBC椹卞姩绋嬪簭宸茶寮哄埗鍙栨秷娉ㄥ唽銆�

10-Jan-2021 14:32:32.338 璀﹀憡 [RMI TCP Connection(5)-127.0.0.1] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesJdbc Web搴旂敤绋嬪簭 [ROOT] 娉ㄥ唽浜咼DBC椹卞姩绋嬪簭 [org.apache.ibatis.datasource.unpooled.UnpooledDataSource.DriverProxy]锛屼絾鍦╓eb搴旂敤绋嬪簭鍋滄鏃舵棤娉曟敞閿�瀹冦�� 涓洪槻姝㈠唴瀛樻硠婕忥紝JDBC椹卞姩绋嬪簭宸茶寮哄埗鍙栨秷娉ㄥ唽銆�

[2021-01-10 02:32:32,356] Artifact icake:war exploded: Error during artifact deployment. See server log for details.

10-Jan-2021 14:32:34.119 淇℃伅 [mysql-cj-abandoned-connection-cleanup] org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading 闈炴硶璁块棶锛氭Web搴旂敤绋嬪簭瀹炰緥宸插仠姝€�傛棤娉曞姞杞絒]銆備负浜嗚皟璇曚互鍙婄粓姝㈠鑷撮潪娉曡闂殑绾跨▼锛屽皢鎶涘嚭浠ヤ笅鍫嗘爤璺熻釜銆�

java.lang.IllegalStateException: 闈炴硶璁块棶锛氭Web搴旂敤绋嬪簭瀹炰緥宸插仠姝€�傛棤娉曞姞杞絒]銆備负浜嗚皟璇曚互鍙婄粓姝㈠鑷撮潪娉曡闂殑绾跨▼锛屽皢鎶涘嚭浠ヤ笅鍫嗘爤璺熻釜銆�

at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading(WebappClassLoaderBase.java:1378)

at org.apache.catalina.loader.WebappClassLoaderBase.getResource(WebappClassLoaderBase.java:1030)

at com.mysql.cj.jdbc.AbandonedConnectionCleanupThread.checkThreadContextClassLoader(AbandonedConnectionCleanupThread.java:117)

at com.mysql.cj.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:84)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

at java.lang.Thread.run(Thread.java:748)

[2021-01-10 02:36:23,009] Artifact icake:war exploded: Error during artifact deployment. See server log for details.

这个就是课程源码啊