this web application instance has been stopped already. Could not load []

最新推荐文章于 2024-05-09 15:21:43 发布

sky_jiangcheng

最新推荐文章于 2024-05-09 15:21:43 发布

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项目启动时出现棘手错误，更换mysql-connector-java和servlet-api版本无效。强调看错误日志要完整，戒骄戒躁。错误表现为listener加载失败和mysql驱动力的IllegalStateException，通过排查web.xml配置的listener解决问题，也指出日志报错提示可能有误。

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项目启动过程中出现下面这个错误，比较棘手，更换了mysql-connector-java 和 servlet-api 的版本也没有起到作用

11-Jul-2019 16:32:00.345 严重 [RMI TCP Connection(3)-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
11-Jul-2019 16:32:00.346 严重 [RMI TCP Connection(3)-127.0.0.1] org.apache.catalina.core.StandardContext.startInternal Context [/joyfarming] startup failed due to previous errors
11-Jul-2019 16:32:00.351 信息 [RMI TCP Connection(3)-127.0.0.1] org.springframework.context.support.AbstractApplicationContext.doClose Closing Root WebApplicationContext: startup date [Thu Jul 11 16:31:36 CST 2019]; root of context hierarchy
ContextFinalizer:Driver com.alibaba.druid.proxy.DruidDriver@25b85df8 deregistered
ContextFinalizer:Driver com.mysql.cj.jdbc.Driver@5335eaa6 deregistered
11-Jul-2019 16:32:00.353 信息 [RMI TCP Connection(3)-127.0.0.1] org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.stop Stopping beans in phase 2147483647
[16:32:00|INFO |com.alibaba.druid.pool.DruidDataSource] - {dataSource-1} closed
[2019-07-11 04:32:00,548] Artifact joyfarming:war: Error during artifact deployment. See server log for details.
11-Jul-2019 16:32:05.061 信息 [mysql-cj-abandoned-connection-cleanup] org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading Illegal access: this web application instance has been stopped already. Could not load []. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
 java.lang.IllegalStateException: Illegal access: this web application instance has been stopped already. Could not load []. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
	at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading(WebappClassLoaderBase.java:1372)
	at org.apache.catalina.loader.WebappClassLoaderBase.getResource(WebappClassLoaderBase.java:1042)
	at com.mysql.cj.jdbc.AbandonedConnectionCleanupThread.checkThreadContextClassLoader(AbandonedConnectionCleanupThread.java:117)
	at com.mysql.cj.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:84)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

看错误日志一定要看完整，有时候只看一点日志碰巧能解决问题，但也有可能很长时间都没有解决问题，但原始日志却已经找不到了，这就是太过焦躁，眼高手低的原因造成的，一定要戒骄戒躁啊。

看前面是 listener 加载失败后面又报 mysql 驱动力的IllegalStateException 问题。可以从两方面入手，一个看 web.xml 配置的 listener 排除不能加载的 listener ，经过排除发现去掉一下配置项目就能起来了

<!-- 加载Log4J 配置文件  -->
  <context-param>
    <param-name>log4jConfigLocation</param-name>
    <!--<param-value>WEB-INF/conf/log4j.properties</param-value>-->
    <param-value>classpath*:log4j.properties</param-value>
  </context-param>

  <context-param>
    <param-name>log4jRefreshInterval</param-name>
    <param-value>3000</param-value>
  </context-param>

  <listener>
    <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class><!--已包含WebAppRootListener的功能-->
  </listener>

这个问题暂且不用管，问题已经解决了。所以有可能日志报错的提示有可能就是错误的引导你向错误的方向钻研。