英文:
Tomcat unknown classloader with java 11
问题
我将项目中的Java版本从Java 8更改为Java 11，当Tomcat启动时，它会部署我指定的.war文件，然而在Java 11下，它无法成功部署它们，Tomcat版本为5.5。以下是Catalina日志：
INFO: 正在启动Servlet引擎：Apache Tomcat/5.5.36
Sep 02, 2020 10:09:00 AM org.apache.catalina.core.StandardHost start
INFO: 已禁用XML验证
Sep 02, 2020 10:09:00 AM org.apache.catalina.loader.WebappLoader setClassPath
INFO: 未知的加载器 jdk.internal.loader.ClassLoaders$AppClassLoader@2cdf8d8a 类 jdk.internal.loader.ClassLoaders$AppClassLoader
Sep 02, 2020 10:09:00 AM org.apache.catalina.loader.WebappLoader setClassPath
INFO: 未知的加载器 jdk.internal.loader.ClassLoaders$AppClassLoader@2cdf8d8a 类 jdk.internal.loader.ClassLoaders$AppClassLoader
Sep 02, 2020 10:09:00 AM org.apache.catalina.startup.HostConfig deployWAR
INFO: 正在部署Web应用程序存档 axis2.war
Sep 02, 2020 10:09:03 AM org.apache.catalina.loader.WebappLoader setClassPath
INFO: 未知的加载器 jdk.internal.loader.ClassLoaders$AppClassLoader@2cdf8d8a 类 jdk.internal.loader.ClassLoaders$AppClassLoader
Sep 02, 2020 10:09:05 AM org.apache.catalina.startup.HostConfig deployWAR
INFO: 正在部署Web应用程序存档 MicroClient.war
Sep 02, 2020 10:09:05 AM org.apache.catalina.loader.WebappLoader setClassPath
INFO: 未知的加载器 jdk.internal.loader.ClassLoaders$AppClassLoader@2cdf8d8a 类 jdk.internal.loader.ClassLoaders$AppClassLoader
Sep 02, 2020 10:09:05 AM org.apache.catalina.core.StandardContext start
SEVERE: 错误 listenerStart
有关问题可能出现的地方是否有任何建议？
英文:
I changed the java of my project from java 8 to java 11 and
when tomcat starts it deploys .war files i have specified,
however with Java 11 it failed to deploy them , the tomcat is version 5.5
here is the log from Catalina
INFO: Starting Servlet Engine: Apache Tomcat/5.5.36
Sep 02, 2020 10:09:00 AM org.apache.catalina.core.StandardHost start
INFO: XML validation disabled
Sep 02, 2020 10:09:00 AM org.apache.catalina.loader.WebappLoader setClassPath
INFO: Unknown loader jdk.internal.loader.ClassLoaders$AppClassLoader@2cdf8d8a class jdk.internal.loader.ClassLoaders$AppClassLoader
Sep 02, 2020 10:09:00 AM org.apache.catalina.loader.WebappLoader setClassPath
INFO: Unknown loader jdk.internal.loader.ClassLoaders$AppClassLoader@2cdf8d8a class jdk.internal.loader.ClassLoaders$AppClassLoader
Sep 02, 2020 10:09:00 AM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive axis2.war
Sep 02, 2020 10:09:03 AM org.apache.catalina.loader.WebappLoader setClassPath
INFO: Unknown loader jdk.internal.loader.ClassLoaders$AppClassLoader@2cdf8d8a class jdk.internal.loader.ClassLoaders$AppClassLoader
Sep 02, 2020 10:09:05 AM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive MicroClient.war
Sep 02, 2020 10:09:05 AM org.apache.catalina.loader.WebappLoader setClassPath
INFO: Unknown loader jdk.internal.loader.ClassLoaders$AppClassLoader@2cdf8d8a class jdk.internal.loader.ClassLoaders$AppClassLoader
Sep 02, 2020 10:09:05 AM org.apache.catalina.core.StandardContext start
SEVERE: Error listenerStart
Any suggestions where the problem can be?
答案1
得分: 1
Tomcat 5.5在2012年10月9日发布，即在其于2012年9月宣布的终止支持日期后的8年，发布后不久就进入了不再维护的状态。
Java 11于2018年9月发布，比Tomcat 5.5进入不再维护状态晚了6年。
> 针对上述发布日期，您可以进行计算。建议升级！
英文:
Tomcat 5.5 was last released 2012-10-09, e.g. 8 years ago, just after its announced end-of-life in September 2012.
Java 11 was released in September 2018, 6 years after Tomcat 5.5 went to unmaintained state.
> Any suggestion where the problem can be?
You do the math on release dates above. Upgrade!
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