Spring Boot报错：Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
近期学校在学习Java ee，实验要求基于Spring Boot + JSP开发图书管理平台。用idea编写时经常遇到各种各样的问题，都无法好好得到解决。今天便遇见启动Tomcat出错的问题。
查阅网上资料，尝试了各种方法都不能解决我的问题。最后通过修改json jar包的版本，使其成为更高版本，最后问题得以解决，Spring Boot成功启动！
报错：
1 Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2 2020-11-24 16:38:10.012 ERROR 15196 --- [ restartedMain] o.s.boot.SpringApplication : Application run failed 3 4 org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat 5 at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:161) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 6 at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:545) ~[spring-context-5.2.11.RELEASE.jar:5.2.11.RELEASE] 7 at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 8 at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) [spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 9 at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 10 at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:405) [spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 11 at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 12 at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 13 at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 14 at nuc.edu.zyd1813004804.library.LibraryApplication.main(LibraryApplication.java:15) [classes/:na] 15 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_241] 16 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_241] 17 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_241] 18 at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_241] 19 at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.3.6.RELEASE.jar:2.3.6.RELEASE] 20 Caused by: org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat 21 at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:142) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 22 at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:104) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 23 at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:440) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 24 at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:193) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 25 at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:178) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 26 at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:158) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 27 ... 14 common frames omitted 28 Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'formContentFilter' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.web.servlet.filter.OrderedFormContentFilter]: Factory method 'formContentFilter' threw exception; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.fasterxml.jackson.datatype.jsr310.JavaTimeModule]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: com/fasterxml/jackson/datatype/jsr310/ser/ZoneIdSerializer 29 at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:655) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE] 30 at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:483) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE] 31 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1336) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE] 32 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1176) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE] 33 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE] 34 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE] 35 at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE] 36 at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE] 37 at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE] 38 at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:207) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE] 39 at org.springframework.boot.web.servlet.ServletContextInitializerBeans.getOrderedBeansOfType(ServletContextInitializerBeans.java:211) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 40 at org.springframework.boot.web.servlet.ServletContextInitializerBeans.addAsRegistrationBean(ServletContextInitializerBeans.java:174) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 41 at org.springframework.boot.web.servlet.ServletContextInitializerBeans.addAsRegistrationBean(ServletContextInitializerBeans.java:169) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 42 at org.springframework.boot.web.servlet.ServletContextInitializerBeans.addAdaptableBeans(ServletContextInitializerBeans.java:154) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 43 at org.springframework.boot.web.servlet.ServletContextInitializerBeans.<init>(ServletContextInitializerBeans.java:86) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 44 at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.getServletContextInitializerBeans(ServletWebServerApplicationContext.java:255) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 45 at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.selfInitialize(ServletWebServerApplicationContext.java:229) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 46 at org.springframework.boot.web.embedded.tomcat.TomcatStarter.onStartup(TomcatStarter.java:53) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 47 at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5166) ~[tomcat-embed-core-9.0.39.jar:9.0.39] 48 at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.39.jar:9.0.39] 49 at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.39.jar:9.0.39] 50 at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.39.jar:9.0.39] 51 at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_241] 52 at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.39.jar:9.0.39] 53 at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) ~[na:1.8.0_241] 54 at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.39.jar:9.0.39] 55 at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:843) ~[tomcat-embed-core-9.0.39.jar:9.0.39] 56 at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.39.jar:9.0.39] 57 at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.39.jar:9.0.39] 58 at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.39.jar:9.0.39] 59 at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_241] 60 at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.39.jar:9.0.39] 61 at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) ~[na:1.8.0_241] 62 at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.39.jar:9.0.39] 63 at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) ~[tomcat-embed-core-9.0.39.jar:9.0.39] 64 at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.39.jar:9.0.39] 65 at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421) ~[tomcat-embed-core-9.0.39.jar:9.0.39] 66 at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.39.jar:9.0.39] 67 at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) ~[tomcat-embed-core-9.0.39.jar:9.0.39] 68 at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.39.jar:9.0.39] 69 at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) ~[tomcat-embed-core-9.0.39.jar:9.0.39] 70 at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:123) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 71 ... 19 common frames omitted 72 Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.web.servlet.filter.OrderedFormContentFilter]: Factory method 'formContentFilter' threw exception; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.fasterxml.jackson.datatype.jsr310.JavaTimeModule]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: com/fasterxml/jackson/datatype/jsr310/ser/ZoneIdSerializer 73 at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE] 74 at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:650) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE] 75 ... 60 common frames omitted 76 Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.fasterxml.jackson.datatype.jsr310.JavaTimeModule]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: com/fasterxml/jackson/datatype/jsr310/ser/ZoneIdSerializer 77 at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:217) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE] 78 at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:139) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE] 79 at org.springframework.http.converter.json.Jackson2ObjectMapperBuilder.registerWellKnownModulesIfAvailable(Jackson2ObjectMapperBuilder.java:805) ~[spring-web-5.2.11.RELEASE.jar:5.2.11.RELEASE] 80 at org.springframework.http.converter.json.Jackson2ObjectMapperBuilder.configure(Jackson2ObjectMapperBuilder.java:669) ~[spring-web-5.2.11.RELEASE.jar:5.2.11.RELEASE] 81 at org.springframework.http.converter.json.Jackson2ObjectMapperBuilder.build(Jackson2ObjectMapperBuilder.java:652) ~[spring-web-5.2.11.RELEASE.jar:5.2.11.RELEASE] 82 at org.springframework.http.converter.json.MappingJackson2HttpMessageConverter.<init>(MappingJackson2HttpMessageConverter.java:59) ~[spring-web-5.2.11.RELEASE.jar:5.2.11.RELEASE] 83 at org.springframework.http.converter.support.AllEncompassingFormHttpMessageConverter.<init>(AllEncompassingFormHttpMessageConverter.java:76) ~[spring-web-5.2.11.RELEASE.jar:5.2.11.RELEASE] 84 at org.springframework.web.filter.FormContentFilter.<init>(FormContentFilter.java:61) ~[spring-web-5.2.11.RELEASE.jar:5.2.11.RELEASE] 85 at org.springframework.boot.web.servlet.filter.OrderedFormContentFilter.<init>(OrderedFormContentFilter.java:29) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE] 86 at org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration.formContentFilter(WebMvcAutoConfiguration.java:165) ~[spring-boot-autoconfigure-2.3.6.RELEASE.jar:2.3.6.RELEASE] 87 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_241] 88 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_241] 89 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_241] 90 at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_241] 91 at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE] 92 ... 61 common frames omitted 93 Caused by: java.lang.NoClassDefFoundError: com/fasterxml/jackson/datatype/jsr310/ser/ZoneIdSerializer 94 at com.fasterxml.jackson.datatype.jsr310.JavaTimeModule.<init>(JavaTimeModule.java:158) ~[jackson-datatype-jsr310-2.11.3.jar:2.11.3] 95 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_241] 96 at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_241] 97 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_241] 98 at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[na:1.8.0_241] 99 at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:204) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE] 100 ... 75 common frames omitted 101 102 103 Process finished with exit code 0View Code
解决：
对应pom.xml：
1 <dependency> 2 <groupId>com.fasterxml.jackson.core</groupId> 3 <artifactId>jackson-annotations</artifactId> 4 <version>2.11.0</version> 5 </dependency> 6 <dependency> 7 <groupId>com.fasterxml.jackson.core</groupId> 8 <artifactId>jackson-core</artifactId> 9 <version>2.11.0</version> 10 </dependency> 11 <dependency> 12 <groupId>com.fasterxml.jackson.core</groupId> 13 <artifactId>jackson-databind</artifactId> 14 <version>2.11.0</version> 15 </dependency>