IDEA跑Spring boot项目正常,打包war以后放tomcat异常

最新推荐文章于 2023-08-08 10:51:33 发布

原创最新推荐文章于 2023-08-08 10:51:33 发布 · 788 阅读

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#tomcat异常

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博客指出项目报错原因并非异常而是警告，是Spring Boot与Tomcat版本不符，项目中Spring Boot会加载Tomcat 9，而使用的是Tomcat 7和8。解决办法一是换Tomcat 9，二是给Spring Boot项目降级，但降级较难。最后还附上异常及一个未解决问题的帖子传送门。

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翻了很多帖子,弄了很多版本,其实错误不在于异常,而在于警告

警告: Unknown version string [4.0]. Default version will be used.

说白了就是版本不符,项目中Spring boot版本号是

        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.4.RELEASE</version>

会使用加载tomcat 9
在这里插入图片描述
而我使用的tomcat 7和tomcat 8.所以就会报错
解放方案安装换个tomcat 9就好了,
或者给当前的Spring boot项目的降级

因为我的项目需要打包放到服务器上,服务器上tomcat版本不可能随便换的,所以接下来琢磨如何降级.
™的不好降…继续填坑去了

另外在搜索过程中也有一个帖子评论说很管用,但是没解决我的问题,我带个传送门吧
org.apache.catalina.LifecycleException: Failed to start component tandardEngine Catalina.Standard

最后附上异常

五月 22, 2019 9:52:57 下午 org.apache.catalina.deploy.WebXml setVersion
警告: Unknown version string [4.0]. Default version will be used.
五月 22, 2019 9:52:57 下午 org.apache.catalina.deploy.WebXml setVersion
警告: Unknown version string [4.0]. Default version will be used.
五月 22, 2019 9:53:02 下午 org.apache.catalina.startup.TaglibUriRule body
信息: TLD skipped. URI: http://www.springframework.org/tags is already defined
五月 22, 2019 9:53:02 下午 org.apache.catalina.startup.TaglibUriRule body
信息: TLD skipped. URI: http://www.springframework.org/tags/form is already defined
五月 22, 2019 9:53:02 下午 org.apache.catalina.startup.TldConfig execute
信息: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
五月 22, 2019 9:53:02 下午 org.apache.catalina.core.ContainerBase addChildInternal
严重: ContainerBase.addChild: start: 
org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/wristband]]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:1017)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:993)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
	at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1127)
	at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:2021)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NoClassDefFoundError: javax/servlet/GenericFilter
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at org.apache.catalina.loader.WebappClassLoaderBase.findClassInternal(WebappClassLoaderBase.java:3222)
	at org.apache.catalina.loader.WebappClassLoaderBase.findClass(WebappClassLoaderBase.java:1409)
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1897)
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1771)
	at org.apache.tomcat.websocket.server.WsServerContainer.<init>(WsServerContainer.java:109)
	at org.apache.tomcat.websocket.server.WsSci.init(WsSci.java:131)
	at org.apache.tomcat.websocket.server.WsSci.onStartup(WsSci.java:47)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5669)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
	... 10 more
Caused by: java.lang.ClassNotFoundException: javax.servlet.GenericFilter
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1928)
	at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1771)
	... 22 more

五月 22, 2019 9:53:02 下午 org.apache.catalina.startup.HostConfig deployWAR
严重: Error deploying web application archive D:\apache-tomcat-7.0.88\webapps\wristband.war
java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/wristband]]
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:1021)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:993)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
	at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1127)
	at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:2021)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

五月 22, 2019 9:53:02 下午 org.apache.catalina.startup.HostConfig deployWAR