SpringBoot 工程转 Jar 启动时子容器失败
A child container failed during start SpringBoot project converted into Jar
我带着我的一个问题又回来了。
我开发了一个 SpringBoot 应用程序，但现在出现一些错误。当我使用 Eclipse 启动应用程序时，我没有任何错误。但是当我将它转换为可运行的 jar 文件并启动它时，我遇到了这些错误：我不明白为什么它与 eclipse 一起工作而不是在 jar 文件中工作。
:: Spring Boot ::(v2.6.7)
2022-05-19 08:05:29.366 INFO 5520 --- [main] com.example.demo.DemoApplication: Starting DemoApplication using Java 1.8.0_333 on machinetest with PID 5520 (started by tdriss in C:\Users\tdriss\Desktop\Documents)
2022-05-19 08:05:29.378 INFO 5520 --- [main] com.example.demo.DemoApplication: No active profile set, falling back to 1 default profile: "default"
2022-05-19 08:06:00.841 INFO 5520 --- [main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2022-05-19 08:06:01.501 INFO 5520 --- [main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2022-05-19 08:06:01.501 INFO 5520 --- [main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.62]
2022-05-19 08:06:01.811 ERROR 5520 --- [main] org.apache.catalina.core.ContainerBase : A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to initialize component [org.apache.catalina.webresources.StandardRoot@14d81f2c]
at java.util.concurrent.FutureTask.report(Unknown Source) [na:1.8.0_333]
at java.util.concurrent.FutureTask.get(Unknown Source) [na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:926) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:835) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1396) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1386) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.FutureTask.run(Unknown Source) [na:1.8.0_333]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.AbstractExecutorService.submit(Unknown Source) [na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:919) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:263) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:432) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:927) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:479) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:211) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:182) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:160) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:577) [jar:rsrc:spring-context-5.3.19.jar!/:na]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:740) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:415) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1312) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at com.example.demo.DemoApplication.main(DemoApplication.java:22) [rsrc:./:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_333]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_333]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_333]
at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.8.0_333]
at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:61) [OPAL2022tomcatenable.jar:na]
Caused by: org.apache.catalina.LifecycleException: Failed to initialize component [org.apache.catalina.webresources.StandardRoot@14d81f2c]
at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:139) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:173) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4885) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5023) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1396) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1386) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.FutureTask.run(Unknown Source) [na:1.8.0_333]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.AbstractExecutorService.submit(Unknown Source) [na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:919) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 34 common frames omitted
Caused by: java.lang.Error: factory already defined
at java.net.URL.setURLStreamHandlerFactory(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.webresources.TomcatURLStreamHandlerFactory.<init>(TomcatURLStreamHandlerFactory.java:130) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.TomcatURLStreamHandlerFactory.getInstanceInternal(TomcatURLStreamHandlerFactory.java:53) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.TomcatURLStreamHandlerFactory.register(TomcatURLStreamHandlerFactory.java:77) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.StandardRoot.registerURLStreamHandlerFactory(StandardRoot.java:711) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.StandardRoot.initInternal(StandardRoot.java:698) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 44 common frames omitted
2022-05-19 08:06:01.820 ERROR 5520 --- [main] org.apache.catalina.core.ContainerBase : A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: A child container failed during start
at java.util.concurrent.FutureTask.report(Unknown Source) ~[na:1.8.0_333]
at java.util.concurrent.FutureTask.get(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:926) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:263) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:432) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:927) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:479) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:211) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:182) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:160) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:577) [jar:rsrc:spring-context-5.3.19.jar!/:na]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:740) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:415) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1312) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at com.example.demo.DemoApplication.main(DemoApplication.java:22) [rsrc:./:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_333]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_333]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_333]
at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.8.0_333]
at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:61) [OPAL2022tomcatenable.jar:na]
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:938) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:835) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1396) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1386) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.FutureTask.run(Unknown Source) ~[na:1.8.0_333]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.AbstractExecutorService.submit(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:919) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 26 common frames omitted
Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to initialize component [org.apache.catalina.webresources.StandardRoot@14d81f2c]
at java.util.concurrent.FutureTask.report(Unknown Source) ~[na:1.8.0_333]
at java.util.concurrent.FutureTask.get(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:926) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 34 common frames omitted
Caused by: org.apache.catalina.LifecycleException: Failed to initialize component [org.apache.catalina.webresources.StandardRoot@14d81f2c]
at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:139) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:173) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4885) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5023) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1396) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1386) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.FutureTask.run(Unknown Source) ~[na:1.8.0_333]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.AbstractExecutorService.submit(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:919) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 34 common frames omitted
Caused by: java.lang.Error: factory already defined
at java.net.URL.setURLStreamHandlerFactory(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.webresources.TomcatURLStreamHandlerFactory.<init>(TomcatURLStreamHandlerFactory.java:130) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.TomcatURLStreamHandlerFactory.getInstanceInternal(TomcatURLStreamHandlerFactory.java:53) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.TomcatURLStreamHandlerFactory.register(TomcatURLStreamHandlerFactory.java:77) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.StandardRoot.registerURLStreamHandlerFactory(StandardRoot.java:711) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.StandardRoot.initInternal(StandardRoot.java:698) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 44 common frames omitted
2022-05-19 08:06:01.830 INFO 5520 --- [main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2022-05-19 08:06:03.335 WARN 5520 --- [main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
2022-05-19 08:06:03.363 INFO 5520 --- [main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2022-05-19 08:06:03.428 ERROR 5520 --- [main] o.s.boot.SpringApplication : Application run failed
org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:163) ~[jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:577) ~[jar:rsrc:spring-context-5.3.19.jar!/:na]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:740) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:415) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1312) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at com.example.demo.DemoApplication.main(DemoApplication.java:22) [rsrc:./:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_333]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_333]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_333]
at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.8.0_333]
at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:61) [OPAL2022tomcatenable.jar:na]
Caused by: org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:142) ~[jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) ~[jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:479) ~[jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:211) ~[jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:182) ~[jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:160) ~[jar:rsrc:spring-boot-2.6.7.jar!/:na]
... 13 common frames omitted
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:938) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:263) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:432) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:927) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123) ~[jar:rsrc:spring-boot-2.6.7.jar!/:na]
... 18 common frames omitted
Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: A child container failed during start
at java.util.concurrent.FutureTask.report(Unknown Source) ~[na:1.8.0_333]
at java.util.concurrent.FutureTask.get(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:926) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 26 common frames omitted
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:938) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:835) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1396) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1386) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.FutureTask.run(Unknown Source) ~[na:1.8.0_333]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.AbstractExecutorService.submit(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:919) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 26 common frames omitted
Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to initialize component [org.apache.catalina.webresources.StandardRoot@14d81f2c]
at java.util.concurrent.FutureTask.report(Unknown Source) ~[na:1.8.0_333]
at java.util.concurrent.FutureTask.get(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:926) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 34 common frames omitted
Caused by: org.apache.catalina.LifecycleException: Failed to initialize component [org.apache.catalina.webresources.StandardRoot@14d81f2c]
at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:139) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:173) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4885) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5023) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1396) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1386) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.FutureTask.run(Unknown Source) ~[na:1.8.0_333]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.AbstractExecutorService.submit(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:919) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 34 common frames omitted
Caused by: java.lang.Error: factory already defined
at java.net.URL.setURLStreamHandlerFactory(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.webresources.TomcatURLStreamHandlerFactory.<init>(TomcatURLStreamHandlerFactory.java:130) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.TomcatURLStreamHandlerFactory.getInstanceInternal(TomcatURLStreamHandlerFactory.java:53) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.TomcatURLStreamHandlerFactory.register(TomcatURLStreamHandlerFactory.java:77)~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.StandardRoot.registerURLStreamHandlerFactory(StandardRoot.java:711)~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.StandardRoot.initInternal(StandardRoot.java:698) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 44 common frames omitted
我已经尝试通过添加
来解决这个问题
TomcatURLStreamHandlerFactory.disable();
问题就这样解决了，但是当我想在我的浏览器中对 localhost:8080 发出 api 请求时，我在控制台中有这个
2022-05-19 09:29:03.166 INFO 972 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring DispatcherServlet 'dispatcherServlet'
2022-05-19 09:29:03.195 INFO 972 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherServlet'
2022-05-19 09:29:03.212 INFO 972 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Completed initialization in 13 ms
我的浏览器出现 404 错误，我明确表示我在 eclipse 上的项目没有这个问题。
这是我的 POM 文件
问题仅与 Java 版本和 Java 库版本有关。在 jar 中导出也有问题，当我们导出可运行的 jar 文件时，必须选择将所需的库复制到子文件夹而不是其他两个选项。
我带着我的一个问题又回来了。
我开发了一个 SpringBoot 应用程序，但现在出现一些错误。当我使用 Eclipse 启动应用程序时，我没有任何错误。但是当我将它转换为可运行的 jar 文件并启动它时，我遇到了这些错误：我不明白为什么它与 eclipse 一起工作而不是在 jar 文件中工作。
:: Spring Boot ::(v2.6.7)
2022-05-19 08:05:29.366 INFO 5520 --- [main] com.example.demo.DemoApplication: Starting DemoApplication using Java 1.8.0_333 on machinetest with PID 5520 (started by tdriss in C:\Users\tdriss\Desktop\Documents)
2022-05-19 08:05:29.378 INFO 5520 --- [main] com.example.demo.DemoApplication: No active profile set, falling back to 1 default profile: "default"
2022-05-19 08:06:00.841 INFO 5520 --- [main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2022-05-19 08:06:01.501 INFO 5520 --- [main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2022-05-19 08:06:01.501 INFO 5520 --- [main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.62]
2022-05-19 08:06:01.811 ERROR 5520 --- [main] org.apache.catalina.core.ContainerBase : A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to initialize component [org.apache.catalina.webresources.StandardRoot@14d81f2c]
at java.util.concurrent.FutureTask.report(Unknown Source) [na:1.8.0_333]
at java.util.concurrent.FutureTask.get(Unknown Source) [na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:926) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:835) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1396) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1386) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.FutureTask.run(Unknown Source) [na:1.8.0_333]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.AbstractExecutorService.submit(Unknown Source) [na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:919) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:263) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:432) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:927) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:479) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:211) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:182) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:160) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:577) [jar:rsrc:spring-context-5.3.19.jar!/:na]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:740) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:415) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1312) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at com.example.demo.DemoApplication.main(DemoApplication.java:22) [rsrc:./:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_333]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_333]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_333]
at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.8.0_333]
at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:61) [OPAL2022tomcatenable.jar:na]
Caused by: org.apache.catalina.LifecycleException: Failed to initialize component [org.apache.catalina.webresources.StandardRoot@14d81f2c]
at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:139) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:173) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4885) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5023) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1396) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1386) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.FutureTask.run(Unknown Source) [na:1.8.0_333]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.AbstractExecutorService.submit(Unknown Source) [na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:919) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 34 common frames omitted
Caused by: java.lang.Error: factory already defined
at java.net.URL.setURLStreamHandlerFactory(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.webresources.TomcatURLStreamHandlerFactory.<init>(TomcatURLStreamHandlerFactory.java:130) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.TomcatURLStreamHandlerFactory.getInstanceInternal(TomcatURLStreamHandlerFactory.java:53) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.TomcatURLStreamHandlerFactory.register(TomcatURLStreamHandlerFactory.java:77) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.StandardRoot.registerURLStreamHandlerFactory(StandardRoot.java:711) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.StandardRoot.initInternal(StandardRoot.java:698) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 44 common frames omitted
2022-05-19 08:06:01.820 ERROR 5520 --- [main] org.apache.catalina.core.ContainerBase : A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: A child container failed during start
at java.util.concurrent.FutureTask.report(Unknown Source) ~[na:1.8.0_333]
at java.util.concurrent.FutureTask.get(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:926) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:263) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:432) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:927) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:479) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:211) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:182) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:160) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:577) [jar:rsrc:spring-context-5.3.19.jar!/:na]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:740) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:415) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1312) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at com.example.demo.DemoApplication.main(DemoApplication.java:22) [rsrc:./:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_333]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_333]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_333]
at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.8.0_333]
at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:61) [OPAL2022tomcatenable.jar:na]
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:938) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:835) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1396) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1386) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.FutureTask.run(Unknown Source) ~[na:1.8.0_333]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.AbstractExecutorService.submit(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:919) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 26 common frames omitted
Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to initialize component [org.apache.catalina.webresources.StandardRoot@14d81f2c]
at java.util.concurrent.FutureTask.report(Unknown Source) ~[na:1.8.0_333]
at java.util.concurrent.FutureTask.get(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:926) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 34 common frames omitted
Caused by: org.apache.catalina.LifecycleException: Failed to initialize component [org.apache.catalina.webresources.StandardRoot@14d81f2c]
at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:139) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:173) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4885) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5023) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1396) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1386) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.FutureTask.run(Unknown Source) ~[na:1.8.0_333]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.AbstractExecutorService.submit(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:919) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 34 common frames omitted
Caused by: java.lang.Error: factory already defined
at java.net.URL.setURLStreamHandlerFactory(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.webresources.TomcatURLStreamHandlerFactory.<init>(TomcatURLStreamHandlerFactory.java:130) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.TomcatURLStreamHandlerFactory.getInstanceInternal(TomcatURLStreamHandlerFactory.java:53) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.TomcatURLStreamHandlerFactory.register(TomcatURLStreamHandlerFactory.java:77) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.StandardRoot.registerURLStreamHandlerFactory(StandardRoot.java:711) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.StandardRoot.initInternal(StandardRoot.java:698) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136) [jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 44 common frames omitted
2022-05-19 08:06:01.830 INFO 5520 --- [main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2022-05-19 08:06:03.335 WARN 5520 --- [main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
2022-05-19 08:06:03.363 INFO 5520 --- [main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2022-05-19 08:06:03.428 ERROR 5520 --- [main] o.s.boot.SpringApplication : Application run failed
org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:163) ~[jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:577) ~[jar:rsrc:spring-context-5.3.19.jar!/:na]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:740) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:415) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1312) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301) [jar:rsrc:spring-boot-2.6.7.jar!/:na]
at com.example.demo.DemoApplication.main(DemoApplication.java:22) [rsrc:./:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_333]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_333]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_333]
at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.8.0_333]
at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:61) [OPAL2022tomcatenable.jar:na]
Caused by: org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:142) ~[jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) ~[jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:479) ~[jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:211) ~[jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:182) ~[jar:rsrc:spring-boot-2.6.7.jar!/:na]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:160) ~[jar:rsrc:spring-boot-2.6.7.jar!/:na]
... 13 common frames omitted
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:938) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:263) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:432) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:927) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123) ~[jar:rsrc:spring-boot-2.6.7.jar!/:na]
... 18 common frames omitted
Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: A child container failed during start
at java.util.concurrent.FutureTask.report(Unknown Source) ~[na:1.8.0_333]
at java.util.concurrent.FutureTask.get(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:926) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 26 common frames omitted
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:938) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:835) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1396) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1386) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.FutureTask.run(Unknown Source) ~[na:1.8.0_333]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.AbstractExecutorService.submit(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:919) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 26 common frames omitted
Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to initialize component [org.apache.catalina.webresources.StandardRoot@14d81f2c]
at java.util.concurrent.FutureTask.report(Unknown Source) ~[na:1.8.0_333]
at java.util.concurrent.FutureTask.get(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:926) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 34 common frames omitted
Caused by: org.apache.catalina.LifecycleException: Failed to initialize component [org.apache.catalina.webresources.StandardRoot@14d81f2c]
at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:139) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:173) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4885) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5023) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1396) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1386) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.FutureTask.run(Unknown Source) ~[na:1.8.0_333]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at java.util.concurrent.AbstractExecutorService.submit(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:919) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 34 common frames omitted
Caused by: java.lang.Error: factory already defined
at java.net.URL.setURLStreamHandlerFactory(Unknown Source) ~[na:1.8.0_333]
at org.apache.catalina.webresources.TomcatURLStreamHandlerFactory.<init>(TomcatURLStreamHandlerFactory.java:130) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.TomcatURLStreamHandlerFactory.getInstanceInternal(TomcatURLStreamHandlerFactory.java:53) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.TomcatURLStreamHandlerFactory.register(TomcatURLStreamHandlerFactory.java:77)~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.StandardRoot.registerURLStreamHandlerFactory(StandardRoot.java:711)~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.webresources.StandardRoot.initInternal(StandardRoot.java:698) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136) ~[jar:rsrc:tomcat-embed-core-9.0.62.jar!/:na]
... 44 common frames omitted
我已经尝试通过添加
来解决这个问题TomcatURLStreamHandlerFactory.disable();
问题就这样解决了，但是当我想在我的浏览器中对 localhost:8080 发出 api 请求时，我在控制台中有这个
2022-05-19 09:29:03.166 INFO 972 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring DispatcherServlet 'dispatcherServlet'
2022-05-19 09:29:03.195 INFO 972 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherServlet'
2022-05-19 09:29:03.212 INFO 972 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Completed initialization in 13 ms
我的浏览器出现 404 错误，我明确表示我在 eclipse 上的项目没有这个问题。
这是我的 POM 文件
问题仅与 Java 版本和 Java 库版本有关。在 jar 中导出也有问题，当我们导出可运行的 jar 文件时，必须选择将所需的库复制到子文件夹而不是其他两个选项。