org.springframework.context.ApplicationContextException: Failed to start bean 'documentationPluginsBootstrapper';问题解决办法

1. org.springframework.context.ApplicationContextException: Failed to start bean 'documentationPluginsBootstrapper'; nested exception is com.google.common.util.concurrent.ExecutionError: java.lang.NoSuchMethodError: com.google.common.collect.FluentIterable.concat(Ljava/lang/Iterable;Ljava/lang/Iterable;)Lcom/google/common/collect/FluentIterable;
       org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:176)
       org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:51)
       org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:346)
       org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:149)
       org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:112)
       org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:851)
       org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:540)
       org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:667)
       org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:633)
       org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:681)
       org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:552)
       org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:493)
       org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
       javax.servlet.GenericServlet.init(GenericServlet.java:158)
       org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:474)
       org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
       org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
       org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
       org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783)
       org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
       org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:798)xxxxxxxxxx sp-nmerrororg.springframework.context.ApplicationContextException: Failed to start bean 'documentationPluginsBootstrapper'; nested exception is com.google.common.util.concurrent.ExecutionError: java.lang.NoSuchMethodError: com.google.common.collect.FluentIterable.concat(Ljava/lang/Iterable;Ljava/lang/Iterable;)Lcom/google/common/collect/FluentIterable;    org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:176)    org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:51)    org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:346)    org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:149)    org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:112)    org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:851)    org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:540)    org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:667)    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:633)    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:681)    org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:552)    org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:493)    org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)    javax.servlet.GenericServlet.init(GenericServlet.java:158)    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:474)    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)    org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)    org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783)    org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)    org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:798)java

    

2. 原因：本机电脑用的jdk14
3. 解决方法：降级为jdk8