Tomcat由於maven在幾種情況下無法打開

這兩天我遇到了一些與maven有關的問題（我剛接觸它），都導致打開tomcat失敗。這裏有幾種情況：Tomcat由於maven在幾種情況下無法打開

1.導入maven項目後從github下載;

2.將動態項目更改爲maven項目後;

3.添加一些依賴到pom.xml後;

4.更改鏈接到maven項目的數據庫後;

而且有可能使tomcat的打開problem.Is有任何類似的情況或任何解決方案的其他情況？這真的很失望，突然無法打開tomcat的，也許只是做了幾個things.If可能我希望有一些解釋。謝謝。和所有日誌是：

A child container failed during start 
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/WechatDemo]] 
    at java.util.concurrent.FutureTask.report(Unknown Source) 
    at java.util.concurrent.FutureTask.get(Unknown Source) 
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:939) 
    at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:872) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409) 
    at java.util.concurrent.FutureTask.run(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
    at java.lang.Thread.run(Unknown Source) 
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/WechatDemo]] 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167) 
    ... 6 more 
Caused by: java.lang.NoClassDefFoundError: org/apache/commons/fileupload/FileUploadException 
    at java.lang.Class.getDeclaredFields0(Native Method) 
    at java.lang.Class.privateGetDeclaredFields(Unknown Source) 
    at java.lang.Class.getDeclaredFields(Unknown Source) 
    at org.apache.catalina.util.Introspection.getDeclaredFields(Introspection.java:110) 
    at org.apache.catalina.startup.WebAnnotationSet.loadFieldsAnnotation(WebAnnotationSet.java:262) 
    at org.apache.catalina.startup.WebAnnotationSet.loadApplicationServletAnnotations(WebAnnotationSet.java:136) 
    at org.apache.catalina.startup.WebAnnotationSet.loadApplicationAnnotations(WebAnnotationSet.java:66) 
    at org.apache.catalina.startup.ContextConfig.applicationAnnotationsConfig(ContextConfig.java:328) 
    at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:778) 
    at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:299) 
    at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:94) 
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5114) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    ... 6 more 
Caused by: java.lang.ClassNotFoundException: org.apache.commons.fileupload.FileUploadException 
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1285) 
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1119) 
    ... 19 more 

七月 10, 2017 8:09:40 下午 org.apache.catalina.core.ContainerBase startInternal 
嚴重: A child container failed during start 
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]] 
    at java.util.concurrent.FutureTask.report(Unknown Source) 
    at java.util.concurrent.FutureTask.get(Unknown Source) 
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:939) 
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:793) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.startup.Catalina.start(Catalina.java:655) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at java.lang.reflect.Method.invoke(Unknown Source) 
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:355) 
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:495) 
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]] 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409) 
    at java.util.concurrent.FutureTask.run(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
    at java.lang.Thread.run(Unknown Source) 
Caused by: org.apache.catalina.LifecycleException: A child container failed during start 
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:947) 
    at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:872) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    ... 6 more 

七月 10, 2017 8:09:40 下午 org.apache.catalina.startup.Catalina start 
嚴重: The required Server component failed to start so Tomcat is unable to start. 
org.apache.catalina.LifecycleException: Failed to start component [StandardServer[8005]] 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167) 
    at org.apache.catalina.startup.Catalina.start(Catalina.java:655) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at java.lang.reflect.Method.invoke(Unknown Source) 
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:355) 
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:495) 
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardService[Catalina]] 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167) 
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:793) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    ... 7 more 
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina]] 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167) 
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    ... 9 more 
Caused by: org.apache.catalina.LifecycleException: A child container failed during start 
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:947) 
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    ... 11 more

的命令輸出（綁MVN依賴後：在我的項目的根字典CMD樹）：

[INFO] Scanning for projects... 
[INFO] Scanning for projects... 
[INFO] 
[INFO] ------------------------------------------------------------------------ 
[INFO] Building WechatDemo 0.0.1-SNAPSHOT 
[INFO] ------------------------------------------------------------------------ 
[INFO] 
[INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @ WechatDemo --- 
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Downloaded: https://repo.maven.apache.org/maven2/org/apache/maven/shared/maven-invoker/2.0.1 
1/maven-invoker-2.0.11.jar (29 KB at 3.8 KB/sec) 
[INFO] com.yi.wechat:WechatDemo:war:0.0.1-SNAPSHOT 
[INFO] +- org.mybatis:mybatis-spring:jar:1.3.1:compile 
[INFO] +- junit:junit:jar:4.12:compile 
[INFO] | \- org.hamcrest:hamcrest-core:jar:1.3:compile 
[INFO] +- javax.servlet:jstl:jar:1.2:compile 
[INFO] +- javax.servlet:javax.servlet-api:jar:4.0.0-b07:compile 
[INFO] +- javax.servlet:servlet-api:jar:3.0-alpha-1:compile 
[INFO] +- mysql:mysql-connector-java:jar:6.0.6:compile 
[INFO] +- org.springframework:spring-webmvc:jar:4.3.9.RELEASE:compile 
[INFO] | +- org.springframework:spring-aop:jar:4.3.9.RELEASE:compile 
[INFO] | +- org.springframework:spring-beans:jar:4.3.9.RELEASE:compile 
[INFO] | +- org.springframework:spring-context:jar:4.3.9.RELEASE:compile 
[INFO] | +- org.springframework:spring-core:jar:4.3.9.RELEASE:compile 
[INFO] | +- org.springframework:spring-expression:jar:4.3.9.RELEASE:compile 
[INFO] | \- org.springframework:spring-web:jar:4.3.9.RELEASE:compile 
[INFO] +- org.springframework:spring-jdbc:jar:4.3.9.RELEASE:compile 
[INFO] | \- org.springframework:spring-tx:jar:4.3.9.RELEASE:compile 
[INFO] +- com.mchange:c3p0:jar:0.9.5.2:compile 
[INFO] | \- com.mchange:mchange-commons-java:jar:0.2.11:compile 
[INFO] +- org.mybatis:mybatis:jar:3.4.4:compile 
[INFO] +- org.apache.shiro:shiro-all:jar:1.4.0:compile 
[INFO] | +- org.apache.shiro:shiro-lang:jar:1.4.0:compile 
[INFO] | | \- org.slf4j:slf4j-api:jar:1.7.21:compile 
[INFO] | +- org.apache.shiro:shiro-config-core:jar:1.4.0:compile 
[INFO] | +- org.apache.shiro:shiro-config-ogdl:jar:1.4.0:compile 
[INFO] | +- org.apache.shiro:shiro-crypto-core:jar:1.4.0:compile 
[INFO] | +- org.apache.shiro:shiro-crypto-hash:jar:1.4.0:compile 
[INFO] | +- org.apache.shiro:shiro-crypto-cipher:jar:1.4.0:compile 
[INFO] | +- org.apache.shiro:shiro-event:jar:1.4.0:compile 
[INFO] | +- org.apache.shiro:shiro-core:jar:1.4.0:compile 
[INFO] | | \- org.apache.shiro:shiro-cache:jar:1.4.0:compile 
[INFO] | +- org.apache.shiro:shiro-web:jar:1.4.0:compile 
[INFO] | +- org.apache.shiro:shiro-aspectj:jar:1.4.0:compile 
[INFO] | | +- org.aspectj:aspectjrt:jar:1.8.9:compile 
[INFO] | | \- org.aspectj:aspectjweaver:jar:1.8.9:compile 
[INFO] | +- org.apache.shiro:shiro-ehcache:jar:1.4.0:compile 
[INFO] | | \- net.sf.ehcache:ehcache-core:jar:2.6.11:compile 
[INFO] | +- org.apache.shiro:shiro-guice:jar:1.4.0:compile 
[INFO] | | +- com.google.inject:guice:jar:3.0:compile 
[INFO] | | | +- javax.inject:javax.inject:jar:1:compile 
[INFO] | | | \- aopalliance:aopalliance:jar:1.0:compile 
[INFO] | | \- com.google.inject.extensions:guice-multibindings:jar:3.0:compile 
[INFO] | +- org.apache.shiro:shiro-hazelcast:jar:1.4.0:compile 
[INFO] | | \- com.hazelcast:hazelcast:jar:3.7.2:compile 
[INFO] | +- org.apache.shiro:shiro-quartz:jar:1.4.0:compile 
[INFO] | | \- org.opensymphony.quartz:quartz:jar:1.6.1:compile 
[INFO] | \- org.apache.shiro:shiro-spring:jar:1.4.0:compile 
[INFO] +- net.sf.json-lib:json-lib:jar:2.4:compile 
[INFO] | +- commons-beanutils:commons-beanutils:jar:1.8.0:compile 
[INFO] | +- commons-collections:commons-collections:jar:3.2.1:compile 
[INFO] | +- commons-lang:commons-lang:jar:2.5:compile 
[INFO] | +- commons-logging:commons-logging:jar:1.1.1:compile 
[INFO] | \- net.sf.ezmorph:ezmorph:jar:1.0.6:compile 
[INFO] \- commons-fileupload:commons-fileupload:jar:1.3.3:compile 
[INFO] \- commons-io:commons-io:jar:2.2:compile 
[INFO] ------------------------------------------------------------------------ 
[INFO] BUILD SUCCESS 
[INFO] ------------------------------------------------------------------------ 
[INFO] Total time: 02:17 min 
[INFO] Finished at: 2017-07-10T22:00:57+08:00 
[INFO] Final Memory: 12M/29M 
[INFO] ------------------------------------------------------------------------

來源

2017-07-10 doctorwhorm

打開tomcat是什麼意思？啓動一個tomcat服務？ –

某種形式。日誌是本地主機上的服務器Tomcat v8.5服務器無法啓動。 – doctorwhorm

目前尚不清楚。如果您有錯誤，請提供日誌。 –

可以清楚地說，一些以下類未找到： -

org/apache/commons/fileupload/FileUploadException

您必須將此庫包含到您的項目依賴項庫文件夾中。

獲取「公地fileupload.jar」從官方網站 - http://commons.apache.org/fileupload/

獲取「公地fileupload.jar」從Maven倉庫

<dependency> 
    <groupId>commons-fileupload</groupId> 
     <artifactId>commons-fileupload</artifactId> 
    <version>1.2.1</version> 
</dependency>

你需要把commons-fileupload.jar和commons-io.jar到您的WEB-INF/lib forlder。構建期間使用Classpath，但它們在運行時也必須可用。實際上，如果您使用IDE進行Java EE開發（如Eclipse），將這些Jars放入WEB-INF/lib就足夠了，因爲它們在構建的claspath中會自動可見。

來源

2017-07-10 12:16:28

如果他還沒有添加這個依賴項，他怎麼沒有收到任何編譯問題？ – npradeep357

它可以是版本問題:) –

現在我知道它是class-not-found問題，但我已經將它添加到我的pom.xml文件中。我嘗試了其他一些版本。 – doctorwhorm

Tomcat由於maven在幾種情況下無法打開

回答

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