[英]Tomcat 7 “SEVERE: A child container failed during start”
基本上,我已经编写了一个springMVC
应用程序(在 Spring 方面,我使用了一种相对霰弹枪的springMVC
方法)。 该项目在 Tomcat 6 上运行良好。我的 Tomcat 服务器无法启动并引发以下异常:
Apr 29, 2012 3:41:00 PM org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/bin/jdk1.7.0_03/jre/lib/amd64/server:/usr/bin/jdk1.7.0_03/jre/lib/amd64:/usr/bin/jdk1.7.0_03/jre/../lib/amd64:/usr/lib/jvm/java-6-openjdk/jre/lib/amd64/server:/usr/lib/jvm/java-6-openjdk/jre/lib/amd64:/usr/lib/jvm/java-6-openjdk/jre/../lib/amd64:/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
Apr 29, 2012 3:41:00 PM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.j2ee.server:spring-security-integration' did not find a matching property.
Apr 29, 2012 3:41:00 PM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:Spring3Hibernate' did not find a matching property.
Apr 29, 2012 3:41:00 PM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:assessment' did not find a matching property.
Apr 29, 2012 3:41:00 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-bio-8080"]
Apr 29, 2012 3:41:00 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["ajp-bio-8009"]
Apr 29, 2012 3:41:00 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 654 ms
Apr 29, 2012 3:41:00 PM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Catalina
Apr 29, 2012 3:41:00 PM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.26
Apr 29, 2012 3:41:01 PM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring root WebApplicationContext
INFO : org.springframework.web.context.ContextLoader - Root WebApplicationContext: initialization started
INFO : org.springframework.web.context.support.XmlWebApplicationContext - Refreshing Root WebApplicationContext: startup date [Sun Apr 29 15:41:01 BST 2012]; root of context hierarchy
INFO : org.springframework.beans.factory.xml.XmlBeanDefinitionReader - Loading XML bean definitions from ServletContext resource [/WEB-INF/spring/root-context.xml]
INFO : org.springframework.beans.factory.support.DefaultListableBeanFactory - Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@3dd5df15: defining beans []; root of factory hierarchy
INFO : org.springframework.web.context.ContextLoader - Root WebApplicationContext: initialization completed in 226 ms
Apr 29, 2012 3:41:01 PM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring FrameworkServlet 'appServlet'
INFO : org.springframework.web.servlet.DispatcherServlet - FrameworkServlet 'appServlet': initialization started
INFO : org.springframework.web.context.support.XmlWebApplicationContext - Refreshing WebApplicationContext for namespace 'appServlet-servlet': startup date [Sun Apr 29 15:41:01 BST 2012]; parent: Root WebApplicationContext
INFO : org.springframework.beans.factory.xml.XmlBeanDefinitionReader - Loading XML bean definitions from ServletContext resource [/WEB-INF/spring/appServlet/servlet-context.xml]
INFO : org.springframework.context.annotation.ClassPathBeanDefinitionScanner - JSR-330 'javax.inject.Named' annotation found and supported for component scanning
INFO : org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor - JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
INFO : org.springframework.beans.factory.support.DefaultListableBeanFactory - Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@cf10596: defining beans [org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping#0,org.springframework.format.support.FormattingConversionServiceFactoryBean#0,org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter#0,org.springframework.web.servlet.handler.MappedInterceptor#0,org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver#0,org.springframework.web.servlet.mvc.annotation.ResponseStatusExceptionResolver#0,org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver#0,org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping,org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter,org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter,org.springframework.web.servlet.resource.ResourceHttpRequestHandler#0,org.springframework.web.servlet.handler.SimpleUrlHandlerMapping#0,org.springframework.web.servlet.view.InternalResourceViewResolver#0,dataSource,sessionFactory,homeController,userManagementController,userService,userDao,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.internalPersistenceAnnotationProcessor,org.springframework.web.servlet.view.ContentNegotiatingViewResolver#0,org.springframework.context.annotation.ConfigurationClassPostProcessor$ImportAwareBeanPostProcessor#0]; parent: org.springframework.beans.factory.support.DefaultListableBeanFactory@3dd5df15
INFO : org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping - Mapped "{[/],methods=[GET],params=[],headers=[],consumes=[],produces=[],custom=[]}" onto public java.lang.String org.assessme.com.controller.HomeController.home(java.util.Locale,org.springframework.ui.Model)
INFO : org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping - Mapped "{[/userManagement/],methods=[GET],params=[],headers=[],consumes=[],produces=[],custom=[]}" onto public java.lang.Object org.assessme.com.controller.UserManagementController.home(java.util.Locale,org.springframework.ui.Model)
INFO : org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping - Mapped "{[/userManagement/getUser],methods=[GET],params=[],headers=[],consumes=[],produces=[],custom=[]}" onto public org.assessme.com.entity.User org.assessme.com.controller.UserManagementController.data(java.util.Locale,org.springframework.ui.Model)
INFO : org.springframework.web.servlet.handler.SimpleUrlHandlerMapping - Mapped URL path [/resources/**] onto handler 'org.springframework.web.servlet.resource.ResourceHttpRequestHandler#0'
INFO : org.springframework.web.servlet.DispatcherServlet - FrameworkServlet 'appServlet': initialization completed in 1846 ms
Apr 29, 2012 3:41:03 PM org.apache.catalina.core.ContainerBase startInternal
SEVERE: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/Spring3Hibernate]]
at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:252)
at java.util.concurrent.FutureTask.get(FutureTask.java:111)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1128)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:782)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1566)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1556)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/Spring3Hibernate]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
... 7 more
Caused by: org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 60
at org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:131)
at org.apache.tomcat.util.bcel.classfile.ConstantPool.<init>(ConstantPool.java:60)
at org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:209)
at org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:119)
at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2032)
at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:1923)
at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1891)
at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1877)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1270)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:855)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:345)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5161)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 7 more
我真的不确定这是指什么,我很乐意展示任何代码等,但我真的不知道它指的是什么。 下面是我的 pom.xml 以防万一。
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.assessme</groupId>
<artifactId>com</artifactId>
<name>assessme</name>
<packaging>war</packaging>
<version>1.0.0-BUILD-SNAPSHOT</version>
<properties>
<java-version>1.6</java-version>
<org.springframework-version>3.1.0.RELEASE</org.springframework-version>
<org.aspectj-version>1.6.9</org.aspectj-version>
<org.slf4j-version>1.5.10</org.slf4j-version>
</properties>
<dependencies>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${org.springframework-version}</version>
<exclusions>
<!-- Exclude Commons Logging in favor of SLF4j -->
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<!-- AspectJ -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${org.aspectj-version}</version>
</dependency>
<!-- Logging -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${org.slf4j-version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>${org.slf4j-version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${org.slf4j-version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.15</version>
<exclusions>
<exclusion>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
</exclusion>
<exclusion>
<groupId>javax.jms</groupId>
<artifactId>jms</artifactId>
</exclusion>
<exclusion>
<groupId>com.sun.jdmk</groupId>
<artifactId>jmxtools</artifactId>
</exclusion>
<exclusion>
<groupId>com.sun.jmx</groupId>
<artifactId>jmxri</artifactId>
</exclusion>
</exclusions>
<scope>runtime</scope>
</dependency>
<!-- @Inject -->
<dependency>
<groupId>javax.inject</groupId>
<artifactId>javax.inject</artifactId>
<version>1</version>
</dependency>
<!-- Servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- Persistence -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>3.5.6-Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-annotations</artifactId>
<version>3.5.6-Final</version>
</dependency>
<dependency>
<groupId>javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.11.0.GA</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.18</version>
</dependency>
<!-- Jackson JSON Mapper -->
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.5</version>
</dependency>
<!-- Test -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.7</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-eclipse-plugin</artifactId>
<version>2.9</version>
<configuration>
<additionalProjectnatures>
<projectnature>org.springframework.ide.eclipse.core.springnature</projectnature>
</additionalProjectnatures>
<additionalBuildcommands>
<buildcommand>org.springframework.ide.eclipse.core.springbuilder</buildcommand>
</additionalBuildcommands>
<downloadSources>true</downloadSources>
<downloadJavadocs>true</downloadJavadocs>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
<compilerArgument>-Xlint:all</compilerArgument>
<showWarnings>true</showWarnings>
<showDeprecation>true</showDeprecation>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
<configuration>
<mainClass>org.test.int1.Main</mainClass>
</configuration>
</plugin>
</plugins>
</build>
</project>
有没有人有任何想法?
当 servlet 3.0 应用程序启动时,容器必须扫描所有类以获取注释(除非 metadata-complete=true)。 Tomcat 使用 Apache Commons BCEL 的 fork(没有添加,只是删除了未使用的代码)来执行此扫描。 Web 应用程序无法启动,因为 BCEL 遇到了它不理解的问题。
如果应用程序在 Tomcat 6 上运行良好,在 web.xml 中添加 metadata-complete="true" 或在 web.xml 中将应用程序声明为 2.5 应用程序将停止注释扫描。
目前,这看起来像是正在扫描的类中的问题。 然而,直到我们知道是哪个类导致了问题并仔细查看之前,我们不会知道。 我需要修改 Tomcat 以记录更有用的错误消息,该消息命名有问题的类。 您可以通过以下网址关注这方面的进展: https : //issues.apache.org/bugzilla/show_bug.cgi?id=53161
你可以用以下方法修复它:
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>${servlet-api-version}</version>
<scope>provided</scope>
</dependency>
提供解决这个问题
我最近将所有 eclipse 项目都搬到了一台新 PC 上。 我遇到过这个问题。 我所做的是:
如果您认为以前它运行正常,现在它开始显示特定问题。 那么它只是一种尝试和尝试的方法来解决。 所以为了获得更好的解决方案,您可以按照以下步骤操作
这通常是 web.xml 描述符文件的问题。 可能您混淆了注释和 web.xml servlet 描述定义。 请检查控制台以获取更多信息。
这是我长期以来一直面临的问题。
上次发生这种情况并发现一种情况可能是错误的战争部署,这是在我更新 pom 上的库/Maven 依赖项并重新安装它之后发生的。
解决方案:
right click on the server > remove the war and
right click on the server again > clean
make sure the maven dependencies are added to deployment assembly
right click on the project > Run As > maven clean
right click on the project again > Run As > maven install
and finally deploy the project on to the server. This helped me to solve the issue
“tomcat没有问题”。
我花了 4-5 天的时间来解决这个问题(与上面提到的问题相同)。 在这里我使用的是 tomcat 8.5。 最后,问题得到解决,问题出在“损坏的 jar 文件”上。 您必须删除所有 .m2 存储库(对我而言是 C:\\Users\\Bandham.m2\\repository)。 den 从您的项目文件夹中运行“mvn clean install”命令。
快乐编码。
如果它解决了您的问题,请给一个 UP。
不要惊慌。 你有没有复制servlet代码? 行,
@WebServlet("/HelloWord")
public class HelloWorld extends HttpServlet {
private static final long serialVersionUID = 1L;
您为两个具有不同名称的 servlet 提供了相同的路径@WebServlet("/HelloWord")
。
如果创建web.xml
文件,请检查classpath
。
这似乎是您使用的 servlet api 版本比您在 web.xml 中使用的 xsd 旧,例如 3.0
使用这个 ****http://java.sun.com/xml/ns/javaee/" id="WebApp_ID" version="2.5"> ****
几个月前我也有同样的问题。 这解决了我使用 Maven 而不是下载版本的 Spring 和 web.xml 中的一些更改的问题。
pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>SpringWEB1</groupId>
<artifactId>SpringWEB1</artifactId>
<version>1</version>
<packaging>war</packaging>
<build>
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>2.4</version>
<configuration>
<warSourceDirectory>WebContent</warSourceDirectory>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
</project>
控制器.java
package com.jmtm.controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
@org.springframework.stereotype.Controller
public class Controller {
@RequestMapping("/hi")
public ModelAndView hi(){
return new ModelAndView("Hello", "msg", "Hello user.");
}
}
spring-servlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:c="http://www.springframework.org/schema/c"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.1.xsd">
<context:component-scan base-package="com.jmtm.controller"></context:component-scan>
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
</beans>
解决方案中最重要的部分是在 web.xml 中包含 servlet 调度程序(AKA spring-servlet.xml)的路径
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>SpringWEB1</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
当我试图解决这个问题时,发生了一些奇怪的事情。 从maven.springframework.org/release/org/springframework/spring下载的任何 Spring 版本都给我带来了很多问题(Tomcat 找不到 servlet,Spring 停止 Tomcat,Eclipse 无法启动服务器 {weird})所以与许多问题找到了许多部分解决方案。 我希望这对你有用。
作为额外的帮助,在 Eclipse 中,从 Eclipse Marketplace 下载 Spring STS Tool for Eclipse,这将帮助您创建配置文件 (servlet.xml) 并在 web.xml 文件中为 servlet 编写代码。
Tomcat 服务器无法启动并引发异常,因为在Deployment Descriptor:MyProyect / Servlet Mappings
存在不存在的映射。 删除或更正这些元素; 然后启动服务器工作没有问题。
我有同样的问题,但在我的情况下,我错误地在server.xml ($Tomcat_Install_Dir/conf/) 中添加了一个上下文,并且没有在webapps($Tomcat_Install_Dir/webapps) 中部署相应的战争。 当我删除该上下文并重新启动 tomcat 时,它工作正常。
对我来说,一个案例是我刚刚错过了导致同样问题的 Maven 更新项目
maven 更新项目并尝试是否在 POM.xml 中看到任何错误
我和堆栈跟踪发生了同样的问题
SEVERE: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Tomcat].StandardHost[localhost].StandardContext[/XXXXSearch]]
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1123)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:800)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Tomcat].StandardHost[localhost].StandardContext[/XXXXSearch]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
... 6 more
Caused by: java.lang.IllegalStateException: Unable to complete the scan for annotations for web application [/XXXXSearch]. Possible root causes include a too low setting for -Xss and illegal cyclic inheritance dependencies
at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2109)
at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:1981)
at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1947)
at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1932)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1326)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:878)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:369)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5179)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 6 more
Caused by: java.lang.StackOverflowError
at org.apache.catalina.startup.ContextConfig.populateSCIsForCacheEntry(ContextConfig.java:2269)
at org.apache.catalina.startup.ContextConfig.populateSCIsForCacheEntry(ContextConfig.java:2269)
at org.apache.catalina.startup.ContextConfig.populateSCIsForCacheEntry(ContextConfig.java:2269)
at org.apache.catalina.startup.ContextConfig.populateSCIsForCacheEntry(ContextConfig.java:2269)
at org.apache.catalina.startup.ContextConfig.populateSCIsForCacheEntry(ContextConfig.java:2269)
at org.apache.catalina.startup.ContextConfig.populateSCIsForCacheEntry(ContextConfig.java:2269)
at org.apache.catalina.startup.ContextConfig.populateSCIsForCacheEntry(ContextConfig.java:2269
at org.apache.catalina.startup.ContextConfig.populateSCIsForCacheEntry(ContextConfig.java:2269)
at org.apache.catalina.startup.ContextConfig.populateSCIsForCacheEntry(ContextConfig.java:2269)
at org.apache.catalina.startup.ContextConfig.populateSCIsForCacheEntry(ContextConfig.java:2269)
at org.apache.catalina.startup.ContextConfig.populateSCIsForCacheEntry(ContextConfig.java:2269)
at org.apache.catalina.startup.ContextConfig.populateSCIsForCacheEntry(ContextConfig.java:2269)
经过我的分析,发现这个问题是由于Tomcat启动注解处理导致非法循环继承依赖导致的。
但是我的项目有很多依赖 JAR,找不到哪个负责这个。
在尝试了这么多不愉快的方法之后,我所做的是,我已将我的 tomcat 插件更新为以下并运行相同的场景,
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat8-maven-plugin</artifactId>
<version>3.0-r1756463</version>
<\plugin>
然后我能够找到导致此问题的 JAR,
Aug 23, 2017 2:32:12 PM org.apache.catalina.startup.ContextConfig processAnnotationsJar
SEVERE: Unable to process Jar entry [cryptix/test/TestLOKI91.class] from Jar [jar:file:/C:/Users/Tharinda/.m2/repository/cryptix/cryptix/1.2.2/cryptix-1.2.2.jar!/] for annotations
java.io.EOFException
at org.apache.tomcat.util.bcel.classfile.FastDataInputStream.readUnsignedShort(FastDataInputStream.java:120)
at org.apache.tomcat.util.bcel.classfile.ClassParser.readAttributes(ClassParser.java:110)
at org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:94)
at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:1994)
at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:1944)
at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1919)
at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1880)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1149)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:771)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:305)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5120)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
然后用cryptix-1.2.2.jar解决这个问题就解决了这个问题。
我强烈建议移动tomcat8-maven-plugin ,它目前看起来稳定且错误较少。
作为通用解决方案,我建议您删除所有次要依赖项并运行该应用程序,如果它有效,则还原一些,并在应用程序启动时继续执行相同的操作,最后,您将能够识别哪些依赖导致了这个问题。
例如,使用相同的方式,我发现 groupId 为:org.apache.axis2 的依赖项导致了该问题。
<dependency>
<groupId>org.apache.axis2</groupId>
<artifactId>axis2-transport-local</artifactId>
<version>1.6.1</version>
</dependency>
<dependency>
<groupId>org.apache.axis2</groupId>
<artifactId>axis2-transport-http</artifactId>
<version>1.6.1</version>
</dependency>
我在 tomcat 启动时看到了这个异常,几乎花了很多小时才找出原因。 最后我发现除了Maven依赖中的Spring jar之外,lib文件夹中还有一些低版本的Spring JAR。 当我添加一个新的 Spring Rest 控制器时,lib 中的 JAR 是由 Eclipse 自动添加的。 我从 lib 文件夹中删除了那些,然后让 Maven 处理 JAR/依赖项,这很好。 底线是如果 WEB-INF/lib 中由 Maven 和 jars 管理的 JARS 导致类路径问题,您可能会遇到此错误。
我通过将web.xml
声明更新为 Servlet 4.0 规范解决了类似的问题,如下(我使用 Tomcat 9):
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0"
metadata-complete="true">
<!-- ... (your content here) ... -->
</web-app>
您可以参考Tomcat的哪个版本页面上的图表来查看Tomcat支持的servlet版本。
如果你新添加了 tomcat。 可能是某些旧版本的依赖项可能无法被 tomcat 扫描。 只需获取最新版本并在您的项目中使用它。对我来说,我添加了新版本的javax.annotation并且它可以工作
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