启动springcloud报错Failed to start component ，原因是 tomcat与servlet api 版本冲突

最新推荐文章于 2023-05-28 18:42:40 发布

HelloJavaE2

最新推荐文章于 2023-05-28 18:42:40 发布

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分类专栏： java 文章标签： java tomcat spring boot

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刚接触springcloud项目，启动就遇到一个坑，报错信息就是tomcat启动失败。。。。
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [NonLoginAuthenticator[StandardEngine[Tomcat].StandardHost[localhost].TomcatEmbeddedContext[]]]
at java.util.concurrent.FutureTask.report(FutureTask.java:122) [na:1.8.0_171]
at java.util.concurrent.FutureTask.get(FutureTask.java:192) [na:1.8.0_171]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:947) [tomcat-embed-core-9.0.16.jar:9.0.16]
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:839) [tomcat-embed-core-9.0.16.jar:9.0.16]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.16.jar:9.0.16]
at org.apache.catalina.core.ContainerBase $S t a r t C h i l d . c a l l (C o n t a i n e r B a s e . j a v a : 1425) [t o m c a t - e m b e d - c o r e - 9.0.16 . j a r : 9.0.16] a t o r g . a p a c h e . c a t a l i n a . c o r e . C o n t a i n e r B a s e$ StartChild.call(ContainerBase.java:1415) [tomcat-embed-core-9.0.16.jar:9.0.16]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_171]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) [tomcat-embed-core-9.0.16.jar:9.0.16]
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) [na:1.8.0_171]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:941) [tomcat-embed-core-9.0.16.jar:9.0.16]
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:258) [tomcat-embed-core-9.0.16.jar:9.0.16]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.16.jar:9.0.16]
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422) [tomcat-embed-core-9.0.16.jar:9.0.16]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.16.jar:9.0.16]
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:770) [tomcat-embed-core-9.0.16.jar:9.0.16]
…
Caused by: org.apache.catalina.LifecycleException: Failed to start component [NonLoginAuthenticator[StandardEngine[Tomcat].StandardHost[localhost].TomcatEmbeddedContext[]]]
at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:441) [tomcat-embed-core-9.0.16.jar:9.0.16]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198) [tomcat-embed-core-9.0.16.jar:9.0.16]
at org.apache.catalina.core.StandardPipeline.startInternal(StandardPipeline.java:179) ~[tomcat-embed-core-9.0.16.jar:9.0.16]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.16.jar:9.0.16]
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5015) ~[tomcat-embed-core-9.0.16.jar:9.0.16]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.16.jar:9.0.16]
…

日志最后显示的
在这里插入图片描述

原来是tomcat9与servlet api 2.5版本冲突了，不知道为啥默认用的tomcat9，我另一个项目默认是8.5.35
网上查了一下tomcat 与servlet api 版本的对应关系，tomcat 8.5.35对应servlet api 3.1.0
修改pom.xml，加上如下配置

在中设置<tomcat.version>8.5.35</tomcat.version>
设置servlet api版本

<dependency>
	<groupId>javax.servlet</groupId>
	<artifactId>javax.servlet-api</artifactId>
	<version>3.1.0</version>
</dependency>

启动项目，问题解决。