费洪荒之力解决部署Java项目遇到的Hibernate奇葩状

用Java开发了一套基×管理系统，开发技术使用的是SpringMVC ，Hibernate。部署环境是Tomcat8 ，项目在本地跑的好好的。部署思路是很简单的。直接把项目拷贝到服务器，指向一下Tomcat配置文件即可。

本来应该是很顺利很简单的事情。可是修改完配置，跑起来一看。惊呼！

其实无论部署过多少次系统，多么熟练，在跑起来之前的一刹那，总是心存忐忑，果然！

洋洋洒洒的一大篇英文错误提示又一次浮现眼前。悲乎！

这意味着又要花费 “不确定的时间” 解决这些奇葩的症状。

HTTP Status 500 - Servlet.init() for servlet springmvc threw exception

type Exception report

message Servlet.init() for servlet springmvc threw exception

description The server encountered an internal error that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Servlet.init() for servlet springmvc threw exception

org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:522)

org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)

org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)

org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:1110)

org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)

org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:785)

org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1425)

org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)

java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

java.lang.Thread.run(Unknown Source)

root cause

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.validation.beanvalidation.OptionalValidatorFactoryBean#0': Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: Could not initialize class org.hibernate.validator.internal.engine.ConfigurationImpl

org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574)

org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)

org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)

org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)

org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)

org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)

org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)

org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755)

org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)

org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)

org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:664)

org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:630)

org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:678)

org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:549)

org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:490)

org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)

javax.servlet.GenericServlet.init(GenericServlet.java:158)

org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:522)

org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)

org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)

org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:1110)

org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)

org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:785)

org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1425)

org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)

java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

java.lang.Thread.run(Unknown Source)

root cause

java.lang.NoClassDefFoundError: Could not initialize class org.hibernate.validator.internal.engine.ConfigurationImpl

org.hibernate.validator.HibernateValidator.createGenericConfiguration(HibernateValidator.java:41)

javax.validation.Validation$GenericBootstrapImpl.configure(Validation.java:276)

org.springframework.validation.beanvalidation.LocalValidatorFactoryBean.afterPropertiesSet(LocalValidatorFactoryBean.java:223)

org.springframework.validation.beanvalidation.OptionalValidatorFactoryBean.afterPropertiesSet(OptionalValidatorFactoryBean.java:40)

org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1633)

org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1570)

org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)

org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)

org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)

org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)

org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)

org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)

org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755)

org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)

org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)

org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:664)

org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:630)

org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:678)

org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:549)

org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:490)

org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)

javax.servlet.GenericServlet.init(GenericServlet.java:158)

org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:522)

org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)

org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)

org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:1110)

org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)

org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:785)

org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1425)

org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)

java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

java.lang.Thread.run(Unknown Source)

note The full stack trace of the root cause is available in the Apache Tomcat/8.5.4 logs.

Apache Tomcat/8.5.4

必须要找到解决问题的方法！

尝试1：用法眼直接看，盯了这篇文章1分钟，想了3分钟，无头无序，还是丈二和尚摸不着头脑。无奈放弃。

尝试2：用度娘

找到错误的关键字，搜！！！

java.lang.NoClassDefFoundError: Could not initialize class org.hibernate.validator.engine.ConfigurationImp

可是度娘对英文错误，天生不敏感，翻看了前3页面的搜索结果，觉得靠谱的点了点，最终结果仍然是个死局。耗时20分钟！！！

尝试3：用杀手锏，谷歌老爹。

翻上VPN，搜索那段英文，第一条是 stackoverflow上的一条。这是俺最喜欢的结果。急迫的点开。

在这篇文章的最佳答案中找到了这句话：

I had two version of slf4j-api in my classpath - slf4j-api-1.6.1.jar as well as slf4j-api-1.5.8.jar. I removed the latter and that solved my issue with

"java.lang.NoClassDefFoundError: Could not initialize class org.hibernate.validator.engine.ConfigurationImpl".

这个解决方案感觉跟自己的症状毫不相干啊。怀着将信将疑，死马当活马医的心情，去排查了一下服务器上，果然。。。

费洪荒之力解决部署Java项目遇到的Hibernate奇葩状