Error creating bean with name ‘org.springframework.web.servlet.function.support.RouterFunctionMappin

今天在idea上部署ssm项目，运行时报错

rg.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.function.support.RouterFunctionMapping': Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: com/fasterxml/jackson/databind/exc/InvalidDefinitionException
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1796)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:307)
	at org.springframework.web.servlet.DispatcherServlet.createDefaultStrategy(DispatcherServlet.java:901)
	at org.springframework.web.servlet.DispatcherServlet.getDefaultStrategies(DispatcherServlet.java:869)
	at org.springframework.web.servlet.DispatcherServlet.initHandlerMappings(DispatcherServlet.java:619)
	at org.springframework.web.servlet.DispatcherServlet.initStrategies(DispatcherServlet.java:506)
	at org.springframework.web.servlet.DispatcherServlet.onRefresh(DispatcherServlet.java:495)
	at org.springframework.web.servlet.FrameworkServlet.onApplicationEvent(FrameworkServlet.java:842)
	at org.springframework.web.servlet.FrameworkServlet$ContextRefreshListener.onApplicationEvent(FrameworkServlet.java:1190)
	at org.springframework.web.servlet.FrameworkServlet$ContextRefreshListener.onApplicationEvent(FrameworkServlet.java:1186)
	at org.springframework.context.event.GenericApplicationListenerAdapter.onApplicationEvent(GenericApplicationListenerAdapter.java:64)
	at org.springframework.context.event.SourceFilteringListener.onApplicationEventInternal(SourceFilteringListener.java:109)
	at org.springframework.context.event.SourceFilteringListener.onApplicationEvent(SourceFilteringListener.java:73)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
	at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:403)
	at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:360)
	at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:897)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:553)
	at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:702)
	at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:668)
	at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:716)
	at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:591)
	at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:530)
	at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:170)
	at javax.servlet.GenericServlet.init(GenericServlet.java:158)
	at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1188)
	at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1132)
	at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1021)
	at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5085)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5397)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:755)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:731)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717)
	at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1730)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300)
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
	at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
	at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:485)
	at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:434)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300)
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
	at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
	at com.sun.jmx.remote.security.MBeanServerAccessController.invoke(MBeanServerAccessController.java:468)
	at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1468)
	at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76)
	at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1309)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1408)
	at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:829)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

浏览器报500错误

 Servlet.init() for servlet [dispatcherServlet] threw exception

找了很多方法都没找到，最后感觉时jar包问题，我用的mysql8.0,使用以前的jar包会提示错误，所以我在pom.xml文件中修改了自己所需要的jar包版本（如何寻找，后边会详细介绍），最后一运行成了！！！特此记录。
需要jar包的方法：
https://mvnrepository.com/
在这个网站

选中自己所需要的
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