org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.IllegalStateException: java.io.FileNotFoundException: /.../ROOT/WEB-INF/lib/jdbc8-1.8.jar (Too many open files) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:989) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:873) javax.servlet.http.HttpServlet.service(HttpServlet.java:655) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:858) javax.servlet.http.HttpServlet.service(HttpServlet.java:764) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.springframework.boot.actuate.web.trace.servlet.HttpTraceFilter.doFilterInternal(HttpTraceFilter.java:90) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:185) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) com.jeecms.common.web.filter.XssFilter.doFilter(XssFilter.java:91) com.jeecms.common.web.filter.HeaderCorsFilter.doFilter(HeaderCorsFilter.java:108) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127) org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:119) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:150) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:200) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) com.jeecms.component.AuthenticationTokenFilter.doFilter(AuthenticationTokenFilter.java:59) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:74) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) com.jeecms.component.security.RequestRejectedExceptionFilter.doFilter(RequestRejectedExceptionFilter.java:40) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:357) org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:270) org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:109) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:117) org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:106) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) com.jeecms.component.security.RequestRejectedExceptionFilter.doFilter(RequestRejectedExceptionFilter.java:40)

https://blog.csdn.net/qq_22181793/article/details/126828089
参考这个看看 

/jdbc8-1.8.jar (Too many open files) 提示的是这个问题
您现在使用的是什么版本？

2023-07-12 17:14:57.819 [QuartzScheduler_schedulerFactoryBean-0002.novalocal1689152746929_ClusterManager] WARN  o.s.scheduling.quartz.LocalDataSourceJobStore - This scheduler instance (0002.novalocal1689152746929) is still active but was recovered by another instance in the cluster.  This may cause inconsistent behavior. 
2023-07-12 17:15:07.821 [QuartzScheduler_schedulerFactoryBean-0002.novalocal1689152746929_ClusterManager] WARN  o.s.scheduling.quartz.LocalDataSourceJobStore - This scheduler instance (0002.novalocal1689152746929) is still active but was recovered by another instance in the cluster.  This may cause inconsistent behavior. 
2023-07-12 17:15:17.822 [QuartzScheduler_schedulerFactoryBean-0002.novalocal1689152746929_ClusterManager] WARN  o.s.scheduling.quartz.LocalDataSourceJobStore - This scheduler instance (0002.novalocal1689152746929) is still active but was recovered by another instance in the cluster.  This may cause inconsistent behavior. 
2023-07-12 17:15:27.824 [QuartzScheduler_schedulerFactoryBean-0002.novalocal1689152746929_ClusterManager] WARN  o.s.scheduling.quartz.LocalDataSourceJobStore - This scheduler instance (0002.novalocal1689152746929) is still active but was recovered by another instance in the cluster.  This may cause inconsistent behavior. 
2023-07-12 17:15:37.841 [QuartzScheduler_schedulerFactoryBean-0002.novalocal1689152746929_ClusterManager] WARN  o.s.scheduling.quartz.LocalDataSourceJobStore - This scheduler instance (0002.novalocal1689152746929) is still active but was recovered by another instance in the cluster.  This may cause inconsistent behavior. 

版本是指什么？
jdbc8的话就是 jdbc8-1.8.jar