Spring Boot项目启动报错（三）：java.lang.NoClassDefFoundError: org/apache/tomcat/util/descriptor/tld/TldParser

大家好，我是ChrisChenJL·宸叡，一个立志奔向Java的自由少年。

在spring boot的学习中，遇到了一些报错。我试了网上很多解决办法，说实话翻来覆去就那几种，并不适合我遇到的报错。

就像我，翻了好几页，换了无数种关键词搜索才能找到一篇相似的内容。所以我想写一个我遇到的、费尽心思解决掉的报错系列的文章，希望对遇到同样问题的人有所帮助。

Spring Boot项目启动报错（一）：An incompatible version [1.1.29] of the Apache Tomcat Native library is install.

Spring Boot项目启动报错（二）：Error:(5, 52) java: 程序包org.springframework.beans.factory.annotation不存在.

问题的产生

当我解决完之前的报错后，再一次的启动项目，再次报错：

"C:\Program Files\Java\jdk1.8.0_181\bin\java.exe" -XX:TieredStopAtLevel=……
  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::                (v2.4.1)

……
……
……
2021-02-06 21:30:35.703 ERROR 6988 --- [  restartedMain] org.apache.catalina.core.ContainerBase   : A child container failed during start

java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Tomcat].StandardHost[localhost].TomcatEmbeddedContext[]]
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) [na:1.8.0_181]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) [na:1.8.0_181]
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:916) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:843) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_181]
	at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) [na:1.8.0_181]
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.StandardService.startInternal(StandardService.java:434) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:451) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:200) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:181) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:159) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:582) [spring-context-5.3.2.jar:5.3.2]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1309) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1298) [spring-boot-2.4.1.jar:2.4.1]
	at com.chris.SpringbootApplication.main(SpringbootApplication.java:21) [classes/:na]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_181]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_181]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_181]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_181]
	at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.4.1.jar:2.4.1]
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Tomcat].StandardHost[localhost].TomcatEmbeddedContext[]]
	at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_181]
	at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) [na:1.8.0_181]
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) [tomcat-embed-core-9.0.41.jar:9.0.41]
	... 35 common frames omitted
Caused by: java.lang.NoClassDefFoundError: org/apache/tomcat/util/descriptor/tld/TldParser
	at org.apache.jasper.servlet.TldScanner.<init>(TldScanner.java:84) ~[tomcat-embed-jasper-8.5.23.jar:8.5.23]
	at org.apache.jasper.servlet.JasperInitializer.newTldScanner(JasperInitializer.java:118) ~[tomcat-embed-jasper-8.5.23.jar:8.5.23]
	at org.apache.jasper.servlet.JasperInitializer.onStartup(JasperInitializer.java:99) ~[tomcat-embed-jasper-8.5.23.jar:8.5.23]
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5166) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.41.jar:9.0.41]
	... 41 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.apache.tomcat.util.descriptor.tld.TldParser
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[na:1.8.0_181]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_181]
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349) ~[na:1.8.0_181]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_181]
	... 46 common frames omitted

2021-02-06 21:30:35.704 ERROR 6988 --- [  restartedMain] 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(FutureTask.java:122) ~[na:1.8.0_181]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[na:1.8.0_181]
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:916) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.StandardService.startInternal(StandardService.java:434) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:451) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:200) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:181) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:159) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:582) [spring-context-5.3.2.jar:5.3.2]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1309) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1298) [spring-boot-2.4.1.jar:2.4.1]
	at com.chris.SpringbootApplication.main(SpringbootApplication.java:21) [classes/:na]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_181]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_181]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_181]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_181]
	at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.4.1.jar:2.4.1]
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:928) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:843) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_181]
	at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) ~[na:1.8.0_181]
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	... 27 common frames omitted
Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Tomcat].StandardHost[localhost].TomcatEmbeddedContext[]]
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[na:1.8.0_181]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[na:1.8.0_181]
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:916) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	... 35 common frames omitted
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Tomcat].StandardHost[localhost].TomcatEmbeddedContext[]]
	at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198) [tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_181]
	at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) ~[na:1.8.0_181]
	at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	... 35 common frames omitted
Caused by: java.lang.NoClassDefFoundError: org/apache/tomcat/util/descriptor/tld/TldParser
	at org.apache.jasper.servlet.TldScanner.<init>(TldScanner.java:84) ~[tomcat-embed-jasper-8.5.23.jar:8.5.23]
	at org.apache.jasper.servlet.JasperInitializer.newTldScanner(JasperInitializer.java:118) ~[tomcat-embed-jasper-8.5.23.jar:8.5.23]
	at org.apache.jasper.servlet.JasperInitializer.onStartup(JasperInitializer.java:99) ~[tomcat-embed-jasper-8.5.23.jar:8.5.23]
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5166) ~[tomcat-embed-core-9.0.41.jar:9.0.41]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.41.jar:9.0.41]
	... 41 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.apache.tomcat.util.descriptor.tld.TldParser
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[na:1.8.0_181]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_181]
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349) ~[na:1.8.0_181]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_181]
	... 46 common frames omitted

解决方法

刚开始我翻译了一下并且搜索的内容是：

A child container failed during start

但是，结合各个博客的许多篇博文来看，大佬们的建议是遇到这种情况，要学会看“ Caused by: ”后面的内容，那才是引起报错的原因所在。

（ps：确实，遇到错误大家要学会去找引起错误的原因哦~）

然后又通过后面的Caused by: ,观察到一个 Caused by: java.lang.NoClassDefFoundError: org/apache/tomcat/util/descriptor/tld/TldParser

而且一旦进行maven的clean操作后，启动项目就会出现一个找不到主类的错误

错误: 找不到或无法加载主类 com.chris.SpringbootApplication

经过一系列的搜索，终于找到一个解决方法，虽然博主现在还没有彻底搞懂原理（嘿嘿嘿 我还会继续努力哒~）

原来我的 pom.xml 中引用的是：

<dependency>
    <groupId>org.apache.tomcat.embedgroupId>
    <artifactId>tomcat-embed-jasperartifactId>
    <version>8.5.23version>
dependency>

去掉8.5.23后：

<dependency>
    <groupId>org.apache.tomcat.embedgroupId>
    <artifactId>tomcat-embed-jasperartifactId>
dependency>

<dependency>
    <groupId>jstlgroupId>
    <artifactId>jstlartifactId>
    <version>1.2version>
dependency>

然后，项目正常启动！

总结

本系列博文主要用于博主本人记录日常spring boot项目遇到的报错及问题，既可以作为 问题&报错集 使用，又可以随时翻看进行复盘使用。

也希望在未来的某一刻可以帮得上大家~

博主萌新一枚，理解浅显，对于知其然却不知其所以然的内容（比如本文涉及的问题），还望各位大佬多多指教，嘿嘿~谢谢大家 ᕦ(･ㅂ･)ᕤ