springboot启动tomcat报错java.lang.NoClassDefFoundError: javax/el/ELManager仅记录

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor': Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: javax/el/ELManager
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1710)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:583)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502)
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:205)
	at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:205)
	at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:709)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:534)
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:752)
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:388)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:327)
	at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:155)
	at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:135)
	at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:87)
	at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:172)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5423)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	... 42 more
Caused by: java.lang.NoClassDefFoundError: javax/el/ELManager
	at org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator.buildExpressionFactory(ResourceBundleMessageInterpolator.java:88)
	at org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator.<init>(ResourceBundleMessageInterpolator.java:47)
	at org.hibernate.validator.internal.engine.ConfigurationImpl.getDefaultMessageInterpolator(ConfigurationImpl.java:461)
	at org.springframework.boot.validation.MessageInterpolatorFactory.getObject(MessageInterpolatorFactory.java:54)
	at org.springframework.boot.context.properties.ConfigurationPropertiesJsr303Validator$Delegate.<init>(ConfigurationPropertiesJsr303Validator.java:71)
	at org.springframework.boot.context.properties.ConfigurationPropertiesJsr303Validator.<init>(ConfigurationPropertiesJsr303Validator.java:43)
	at org.springframework.boot.context.properties.ConfigurationPropertiesJsr303Validator.getIfJsr303Present(ConfigurationPropertiesJsr303Validator.java:64)
	at org.springframework.boot.context.properties.ConfigurationPropertiesBinder.<init>(ConfigurationPropertiesBinder.java:69)
	at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.afterPropertiesSet(ConfigurationPropertiesBindingPostProcessor.java:78)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1769)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1706)
	... 61 more

tomcat : 7.0.47

jdk       : 1.8

看了网上所说，把tomcat/lib下的el-api.jar拷贝到D:\xxx\jdk1.8.0_121\jre\lib\ext发现还是一样的异常；

反编译el-api的确没有ElManager，在el-api3.0才引入

so ,下载el-api3.0.jar,放到jdk或者只放tomcat/lib都可；（直接使用tomcat8也可解决）