SSM 项目部署，启动 tomcat 报 Context initialization failed 异常

问题背景：项目有新版本上线，测试服通过测试，正式环境上线，报错，服务未启动。

服务日志

2018-09-04 14:28:56,987 [localhost-startStop-1][IP:|USER:][ERROR
				org.springframework.web.context.ContextLoader] Context initialization failed
java.lang.NoClassDefFoundError: org.springframework.beans.FatalBeanException
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:547) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757) ~[spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480) ~[spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
	at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403) ~[spring-web-4.1.6.RELEASE.jar:4.1.6.RELEASE]
	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306) ~[spring-web-4.1.6.RELEASE.jar:4.1.6.RELEASE]
	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106) [spring-web-4.1.6.RELEASE.jar:4.1.6.RELEASE]
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4973) [catalina.jar:7.0.53]
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5467) [catalina.jar:7.0.53]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [catalina.jar:7.0.53]
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901) [catalina.jar:7.0.53]
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877) [catalina.jar:7.0.53]
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:632) [catalina.jar:7.0.53]
	at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1073) [catalina.jar:7.0.53]
	at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1857) [catalina.jar:7.0.53]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) [na:1.7.0_60]
	at java.util.concurrent.FutureTask.run(FutureTask.java:262) [na:1.7.0_60]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_60]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_60]
	at java.lang.Thread.run(Thread.java:745) [na:1.7.0_60]
Sep 04, 2018 2:28:57 PM org.apache.catalina.core.StandardContext startInternal
SEVERE: Error listenerStart

问题分析：

• NoClassDefFoundError 异常：Java 虚拟机在编译时能找到合适的类，而在运行时不能找到合适的类导致的错误。
• 测试服已经通过测试，说明代码没有问题，问题可能出现在打包过程或者正式环境与测试环境有出入。
• 能力有限，无法追踪堆栈信息，但在回滚旧版本的过程中，发现存在 java.lang.StackOverflowError

问题解决：

修改 JVM 配置，加入-Xss512k
测试服配置：-Xms1G -Xmx1G -XX:PermSize=128M -XX:MaxPermSize=128M -Xss512k
-Xss:每个线程的堆栈大小，jdk5.0 默认为 1m

##总结：
最后的问题定位为 java.lang.StackOverflowError，增大 Tomcat 运行时 JVM 的栈大小-Xss512k，问题解决。