[ERROR]org.springframework.web.servlet.DispatcherServlet - Context initiali

[ERROR] 2021-11-16 14:01:23,998 org.springframework.web.servlet.DispatcherServlet - Context initialization failed
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: javax/el/ELManager
【原因】Tomcat缺少javax.el-api-*.jar
javax.el-api-3.0.0.jar下载

打开Tomcat目录下的lib

把javax.el-api.jar粘贴进去

启动成功。