at org.apache.catalina.loader.WebappClassLoader.loadClass问题处理

最新推荐文章于 2024-04-24 16:09:48 发布
原创 最新推荐文章于 2024-04-24 16:09:48 发布 · 1w 阅读 · 0 ·
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本文指导如何在MyEclipse中通过添加JDBC驱动连接MySQL数据库，包括配置步骤和重启操作，确保数据库连接成功。

用myeclipse连接mysql数据库时，一定要加jdbc不然会出现at org.apache.catalina.loader.WebappClassLoader.loadClass

添加步骤：

1.右击 project--〉properties --> Java build path ---> Liabriaries -->add External JARs-->选择mysql的jdbc -->“finish”
2.刷新工程，重新部署，重启tomcat就可以了。
tomcat发布项目，遇到问题的解决记录
EMMA_1986的博客
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八月 07, 2020 6:35:17 下午 org.apache.catalina.loader.WebappClassLoaderBase validateJarFile 信息: validateJarFile(D:\apache-tomcat-7.0.84\webapps\ROOT\WEB-INF\lib\tomcat-servlet-api-7.0.84.jar) - jar not loaded. See Servlet Spec 3.0, section 10.7.2. Offending cl
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雪月清的博客
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SSM整合，Tomcat启动失败，在日志中出现 ClassNotFoundException过滤器文件找不到 问题： 最近刚学习了解Spring、SpringMVC、Mybatis，准备做一个SSM整合的简单项目。本来以为应该很简单，毕竟只是简单的CRUD操作，但是真正做的时候就会出现各种问题，其中一个刚接触SSM整合很容易造成的就是ClassNotFoundException，如下图所示： java.lang.ClassNotFoundException: org.springframework.web
报错日记-SSM框架整合异常
weixin_63983271的博客
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SSM框架整合资源异常
jsp一直出现ClassLoader报错：org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1
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！！！！！！此报错应该是服务器和servlet项目的  jdbc  加载失败，所以针对项目目录结构，把所有可以添加library的地方都加载了这个！！！！！！！同时将此jar文件拷贝到Tomcat的目录文件夹Bin：最后解决问题的是当我把jar文件复制到这目录下，才解决：com.mysql.jdbc.Driver at org.apache.catalina.loader.WebappClass...
Caused by: java.lang.ClassNotFoundException: com.itheima.pojo.OrderSetting at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1702) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1547) ... 45 more
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<groupId>org.apache.tomcat.maven <artifactId>tomcat7-maven-plugin <useSeparateTomcatClassLoader>true ``` - **改用Spring Boot内嵌容器（推荐）** 移除Tomcat插件，添加： ```xml <groupId>...
at java.base/java.lang.Thread.run(Thread.java:1583) 9月 18, 2025 10:26:30 上午 org.apache.catalina.startup.ContextConfig processAnnotationsJar 严重: Unable to process Jar entry [module-info.class] from Jar [jar:file:/C:/Users/20400/.m2/repository/ch/qos/logback/logback-core/1.4.14/logback-core-1.4.14.jar!/] for annotations org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19 at org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:133) at org.apache.tomcat.util.bcel.classfile.ConstantPool.<init>(ConstantPool.java:60) at org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:209) at org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:119) at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2134) at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:2010) at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1976) at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1961) at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1319) at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:878) at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:376) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5322) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) at java.base/java.lang.Thread.run(Thread.java:1583) 9月 18, 2025 10:26:30 上午 org.apache.catalina.startup.ContextConfig processAnnotationsJar 严重: Unable to process Jar entry [META-INF/versions/9/module-info.class] from Jar [jar:file:/C:/Users/20400/.m2/repository/org/jetbrains/annotations/24.0.1/annotations-24.0.1.jar!/] for annotations org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19 at org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:133) at org.apache.tomcat.util.bcel.classfile.ConstantPool.<init>(ConstantPool.java:60) at org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:209) at org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:119) at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2134) at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:2010) at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1976) at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1961) at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1319) at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:878) at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:376) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5322) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) at java.base/java.lang.Thread.run(Thread.java:1583) 9月 18, 2025 10:26:31 上午 org.apache.catalina.startup.TaglibUriRule body 信息: TLD skipped. URI: http://java.sun.com/jstl/core_rt is already defined 9月 18, 2025 10:26:31 上午 org.apache.catalina.startup.TaglibUriRule body 信息: TLD skipped. URI: http://java.sun.com/jstl/core is already defined 9月 18, 2025 10:26:31 上午 org.apache.catalina.startup.TaglibUriRule body 信息: TLD skipped. URI: http://java.sun.com/jsp/jstl/core is already defined 9月 18, 2025 10:26:31 上午 org.apache.catalina.startup.TaglibUriRule body 信息: TLD skipped. URI: http://java.sun.com/jstl/fmt_rt is already defined 9月 18, 2025 10:26:31 上午 org.apache.catalina.startup.TaglibUriRule body 信息: TLD skipped. URI: http://java.sun.com/jstl/fmt is already defined 9月 18, 2025 10:26:31 上午 org.apache.catalina.startup.TaglibUriRule body 信息: TLD skipped. URI: http://java.sun.com/jsp/jstl/fmt is already defined 9月 18, 2025 10:26:31 上午 org.apache.catalina.startup.TaglibUriRule body 信息: TLD skipped. URI: http://java.sun.com/jsp/jstl/functions is already defined 9月 18, 2025 10:26:31 上午 org.apache.catalina.startup.TaglibUriRule body 信息: TLD skipped. URI: http://jakarta.apache.org/taglibs/standard/permittedTaglibs is already defined 9月 18, 2025 10:26:31 上午 org.apache.catalina.startup.TaglibUriRule body 信息: TLD skipped. URI: http://jakarta.apache.org/taglibs/standard/scriptfree is already defined 9月 18, 2025 10:26:31 上午 org.apache.catalina.startup.TaglibUriRule body 信息: TLD skipped. URI: http://java.sun.com/jstl/sql_rt is already defined 9月 18, 2025 10:26:31 上午 org.apache.catalina.startup.TaglibUriRule body 信息: TLD skipped. URI: http://java.sun.com/jstl/sql is already defined 9月 18, 2025 10:26:31 上午 org.apache.catalina.startup.TaglibUriRule body 信息: TLD skipped. URI: http://java.sun.com/jsp/jstl/sql is already defined 9月 18, 2025 10:26:31 上午 org.apache.catalina.startup.TaglibUriRule body 信息: TLD skipped. URI: http://java.sun.com/jstl/xml_rt is already defined 9月 18, 2025 10:26:31 上午 org.apache.catalina.startup.TaglibUriRule body 信息: TLD skipped. URI: http://java.sun.com/jstl/xml is already defined 9月 18, 2025 10:26:31 上午 org.apache.catalina.startup.TaglibUriRule body 信息: TLD skipped. URI: http://java.sun.com/jsp/jstl/xml is already defined 9月 18, 2025 10:26:31 上午 org.apache.catalina.core.StandardContext listenerStart 严重: Error configuring application listener of class org.springframework.web.context.ContextLoaderListener java.lang.NoClassDefFoundError: jakarta/servlet/ServletContextListener at java.base/java.lang.ClassLoader.defineClass1(Native Method) at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1027) at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150) at java.base/java.net.URLClassLoader.defineClass(URLClassLoader.java:524) at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:427) at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:421) at java.base/java.security.AccessController.doPrivileged(AccessController.java:714) at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:420) at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1191) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1669) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1547) at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:532) at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:514) at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:142) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4854) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5434) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) at java.base/java.lang.Thread.run(Thread.java:1583) Caused by: java.lang.ClassNotFoundException: jakarta.servlet.ServletContextListener at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1702) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1547) ... 23 more 9月 18, 2025 10:26:31 上午 org.apache.catalina.core.StandardContext listenerStart 严重: Skipped installing application listeners due to previous error(s) 9月 18, 2025 10:26:31 上午 org.apache.catalina.core.StandardContext startInternal 严重: Error listenerStart 9月 18, 2025 10:26:31 上午 org.apache.catalina.core.StandardContext startInternal 严重: Context [/meal_ordering_system] startup failed due to previous errors 9月 18, 2025 10:26:31 上午 org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc 严重: The web application [/meal_ordering_system] registered the JDBC driver [com.mysql.cj.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. 9月 18, 2025 10:26:31 上午 org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc 严重: The web application [/meal_ordering_system] 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. 9月 18, 2025 10:26:31 上午 org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc 严重: The web application [/meal_ordering_system] registered the JDBC driver [com.alibaba.druid.mock.MockDriver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered. 9月 18, 2025 10:26:31 上午 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads 严重: The web application [/meal_ordering_system] appears to have started a thread named [mysql-cj-abandoned-connection-cleanup] but has failed to stop it. This is very likely to create a memory leak. 9月 18, 2025 10:26:31 上午 org.apache.catalina.loader.WebappClassLoader checkThreadLocalsForLeaks 警告: Failed to check for ThreadLocal references for web application [/meal_ordering_system] java.lang.reflect.InaccessibleObjectException: Unable to make field java.lang.ThreadLocal$ThreadLocalMap java.lang.Thread.threadLocals accessible: module java.base does not "opens java.lang" to unnamed module @2eda072 at java.base/java.lang.reflect.AccessibleObject.throwInaccessibleObjectException(AccessibleObject.java:391) at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:367) at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:315) at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:183) at java.base/java.lang.reflect.Field.setAccessible(Field.java:177) at org.apache.catalina.loader.WebappClassLoader.checkThreadLocalsForLeaks(WebappClassLoader.java:2458) at org.apache.catalina.loader.WebappClassLoader.clearReferences(WebappClassLoader.java:1984) at org.apache.catalina.loader.WebappClassLoader.stop(WebappClassLoader.java:1890) at org.apache.catalina.loader.WebappLoader.stopInternal(WebappLoader.java:662) at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232) at org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5669) at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:160) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) at java.base/java.lang.Thread.run(Thread.java:1583) 9月 18, 2025 10:26:31 上午 org.apache.catalina.core.ContainerBase startInternal 严重: A child container failed during start java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to stop component [StandardEngine[Tomcat].StandardHost[localhost].StandardContext[/meal_ordering_system]] at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1123) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:800) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) at java.base/java.lang.Thread.run(Thread.java:1583) Caused by: org.apache.catalina.LifecycleException: Failed to stop component [StandardEngine[Tomcat].StandardHost[localhost].StandardContext[/meal_ordering_system]] at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:236) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:160) ... 6 more Caused by: org.apache.catalina.LifecycleException: Failed to stop component [WebappLoader[/meal_ordering_system]] at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:236) at org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5669) at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232) ... 7 more Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make field private final java.lang.ClassLoader sun.rmi.transport.Target.ccl accessible: module java.rmi does not "opens sun.rmi.transport" to unnamed module @2eda072 at java.base/java.lang.reflect.AccessibleObject.throwInaccessibleObjectException(AccessibleObject.java:391) at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:367) at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:315) at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:183) at java.base/java.lang.reflect.Field.setAccessible(Field.java:177) at org.apache.catalina.loader.WebappClassLoader.clearReferencesRmiTargets(WebappClassLoader.java:2659) at org.apache.catalina.loader.WebappClassLoader.clearReferences(WebappClassLoader.java:1987) at org.apache.catalina.loader.WebappClassLoader.stop(WebappClassLoader.java:1890) at org.apache.catalina.loader.WebappLoader.stopInternal(WebappLoader.java:662) at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232) ... 9 more 9月 18, 2025 10:26:31 上午 org.apache.catalina.core.ContainerBase startInternal 严重: A child container failed during start java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Tomcat].StandardHost[localhost]] at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1123) at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:302) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.StandardService.startInternal(StandardService.java:443) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:732) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.startup.Tomcat.start(Tomcat.java:341) at org.apache.tomcat.maven.plugin.tomcat7.run.AbstractRunMojo.startContainer(AbstractRunMojo.java:1238) at org.apache.tomcat.maven.plugin.tomcat7.run.AbstractRunMojo.execute(AbstractRunMojo.java:592) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:126) at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2(MojoExecutor.java:328) at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute(MojoExecutor.java:316) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:174) at org.apache.maven.lifecycle.internal.MojoExecutor.access$000(MojoExecutor.java:75) at org.apache.maven.lifecycle.internal.MojoExecutor$1.run(MojoExecutor.java:162) at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute(DefaultMojosExecutionStrategy.java:39) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:159) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:105) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:73) at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:53) at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:118) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:261) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:173) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:101) at org.apache.maven.cli.MavenCli.execute(MavenCli.java:906) at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:283) at org.apache.maven.cli.MavenCli.main(MavenCli.java:206) at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) at java.base/java.lang.reflect.Method.invoke(Method.java:580) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:255) at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:201) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:361) at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:314) Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Tomcat].StandardHost[localhost]] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642) at java.base/java.lang.Thread.run(Thread.java:1583) Caused by: org.apache.catalina.LifecycleException: A child container failed during start at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1131) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:800) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) ... 6 more [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 3.481 s [INFO] Finished at: 2025-09-18T10:26:31+08:00 [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.apache.tomcat.maven:tomcat7-maven-plugin:2.2:run (default-cli) on project meal_ordering_system: Could not start Tomcat: Failed to start component [StandardServer[-1]]: Failed to start component [StandardService[Tomcat]]: Failed to start component [StandardEngine[Tomcat]]: A child container failed during start -> [Help 1] [ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
最新发布
09-19
当遇到 `org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19` 错误时，这通常是由于Tomcat在处理 `module-info.class` 时出现问题，可能是JDK版本与依赖库不兼容...
在这段代码中，出现了以下错误: java.lang.NoClassDefFoundError: com/itheima/service/UserService at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:763) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:467) at java.net.URLClassLoader.access$100(URLClassLoader.java:73) at java.net.URLClassLoader$1.run(URLClassLoader.java:368) at java.net.URLClassLoader$1.run(URLClassLoader.java:362) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:361) at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1191) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1669) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1547) at org.springframework.util.ClassUtils.forName(ClassUtils.java:274) at org.springframework.b
05-08
public class Main { public static void main(String[] args) { try { UserService userService = new UserService(); System.out.println("UserService loaded successfully."); } catch (Exception e) { e....
28-May-2025 17:07:30.001 INFO [DefaultQuartzScheduler_QuartzSchedulerThread] org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading Illegal access: this web application instance has been stopped already. Could not> java.lang.IllegalStateException: Illegal access: this web application instance has been stopped already. Could not load [org.quartz.spi.TriggerFiredBundle]. The following stack trace is thrown for debugging purposes as well as t> at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading(WebappClassLoaderBase.java:1394) at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1382) at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1216) at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1183) at org.quartz.simpl.RAMJobStore.triggersFired(RAMJobStore.java:1572) at org.quartz.core.QuartzSchedulerThread.run(QuartzSchedulerThread.java:353)
05-29
org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading Illegal access: this web application instance has been stopped already ``` **修复步骤**： 1. 在`pom.xml`中排除冲突的...
解决java.lang.ClassNotFoundException at org.apache.catalina.loader.WebappClassLoaderBase.load
09-10
从提供的引用中可以看出，问题出现在类加载器(WebappClassLoader和WebappClassLoaderBase)中，导致了java.lang.ClassNotFoundException异常。 这个异常通常发生在尝试加载一个类时，类文件无法被找到或加载。 要...
org.apache.catalina.loader.WebappClassLoader loadClass
tfy1332的专栏
03-31 3205
2014-3-31 16:30:00 org.apache.catalina.loader.WebappClassLoader loadClass 信息: Illegal access: this web application instance has been stopped already.  Could not load org.quartz.StatefulJob.  The even
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1188) - Java
请你喝杯Java
11-16 3080
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1188) - Java。
at org.apache.catalina.loader.WebappClassLoader.loadClass
chenqk_123的专栏
11-11 8052
写入xml文件的时候碰到这么一个狗血的wenti
Maven项目报错：org.apache.catalina.loader.WebappClassLoaderBase.loadClass
Mr_Tang4的博客
04-24 878
之前一直是好好的，另建了一个module配了下tomcat再回来运行这个就报了这么个错误。
org.apache.catalina.loader.WebappClassLoaderBase loadClass,Could not load org.apache.zookeeper.Clien
yuguang的博客
08-17 5415
1、错误日志 tomcat的日志中报的错误，具体原因未知，网络搜索有的说是zookeeper连接数太多导致连接失败导致的 Jul 20, 2020 12:00:00 AM org.apache.catalina.loader.WebappClassLoaderBase loadClass INFO: Illegal access: this web application instance has been stopped already. Could not load org.apache....
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