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.   1 Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
  2.   2 2020-11-24 16:38:10.012 ERROR 15196 --- [  restartedMain] o.s.boot.SpringApplication               : Application run failed
  3.   3
  4.   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.   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.   6     at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:545) ~[spring-context-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  7.   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.   8     at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) [spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE]
  9.   9     at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE]
  10.  10     at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:405) [spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE]
  11.  11     at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE]
  12.  12     at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE]
  13.  13     at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE]
  14.  14     at nuc.edu.zyd1813004804.library.LibraryApplication.main(LibraryApplication.java:15) [classes/:na]
  15.  15     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_241]
  16.  16     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_241]
  17.  17     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_241]
  18.  18     at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_241]
  19.  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.  20 Caused by: org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
  21.  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.  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.  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.  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.  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.  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.  27     ... 14 common frames omitted
  28.  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.  29     at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:655) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  30.  30     at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:483) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  31.  31     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1336) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  32.  32     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1176) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  33.  33     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  34.  34     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  35.  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.  36     at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  37.  37     at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  38.  38     at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:207) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  39.  39     at org.springframework.boot.web.servlet.ServletContextInitializerBeans.getOrderedBeansOfType(ServletContextInitializerBeans.java:211) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE]
  40.  40     at org.springframework.boot.web.servlet.ServletContextInitializerBeans.addAsRegistrationBean(ServletContextInitializerBeans.java:174) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE]
  41.  41     at org.springframework.boot.web.servlet.ServletContextInitializerBeans.addAsRegistrationBean(ServletContextInitializerBeans.java:169) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE]
  42.  42     at org.springframework.boot.web.servlet.ServletContextInitializerBeans.addAdaptableBeans(ServletContextInitializerBeans.java:154) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE]
  43.  43     at org.springframework.boot.web.servlet.ServletContextInitializerBeans.<init>(ServletContextInitializerBeans.java:86) ~[spring-boot-2.3.6.RELEASE.jar:2.3.6.RELEASE]
  44.  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.  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.  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.  47     at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5166) ~[tomcat-embed-core-9.0.39.jar:9.0.39]
  48.  48     at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.39.jar:9.0.39]
  49.  49     at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.39.jar:9.0.39]
  50.  50     at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.39.jar:9.0.39]
  51.  51     at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_241]
  52.  52     at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.39.jar:9.0.39]
  53.  53     at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) ~[na:1.8.0_241]
  54.  54     at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.39.jar:9.0.39]
  55.  55     at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:843) ~[tomcat-embed-core-9.0.39.jar:9.0.39]
  56.  56     at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.39.jar:9.0.39]
  57.  57     at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[tomcat-embed-core-9.0.39.jar:9.0.39]
  58.  58     at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[tomcat-embed-core-9.0.39.jar:9.0.39]
  59.  59     at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_241]
  60.  60     at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-embed-core-9.0.39.jar:9.0.39]
  61.  61     at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) ~[na:1.8.0_241]
  62.  62     at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[tomcat-embed-core-9.0.39.jar:9.0.39]
  63.  63     at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) ~[tomcat-embed-core-9.0.39.jar:9.0.39]
  64.  64     at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.39.jar:9.0.39]
  65.  65     at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421) ~[tomcat-embed-core-9.0.39.jar:9.0.39]
  66.  66     at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.39.jar:9.0.39]
  67.  67     at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) ~[tomcat-embed-core-9.0.39.jar:9.0.39]
  68.  68     at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.39.jar:9.0.39]
  69.  69     at org.apache.catalina.startup.Tomcat.start(Tomcat.java:486) ~[tomcat-embed-core-9.0.39.jar:9.0.39]
  70.  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.  71     ... 19 common frames omitted
  72.  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.  73     at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  74.  74     at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:650) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  75.  75     ... 60 common frames omitted
  76.  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.  77     at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:217) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  78.  78     at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:139) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  79.  79     at org.springframework.http.converter.json.Jackson2ObjectMapperBuilder.registerWellKnownModulesIfAvailable(Jackson2ObjectMapperBuilder.java:805) ~[spring-web-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  80.  80     at org.springframework.http.converter.json.Jackson2ObjectMapperBuilder.configure(Jackson2ObjectMapperBuilder.java:669) ~[spring-web-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  81.  81     at org.springframework.http.converter.json.Jackson2ObjectMapperBuilder.build(Jackson2ObjectMapperBuilder.java:652) ~[spring-web-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  82.  82     at org.springframework.http.converter.json.MappingJackson2HttpMessageConverter.<init>(MappingJackson2HttpMessageConverter.java:59) ~[spring-web-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  83.  83     at org.springframework.http.converter.support.AllEncompassingFormHttpMessageConverter.<init>(AllEncompassingFormHttpMessageConverter.java:76) ~[spring-web-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  84.  84     at org.springframework.web.filter.FormContentFilter.<init>(FormContentFilter.java:61) ~[spring-web-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  85.  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.  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.  87     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_241]
  88.  88     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_241]
  89.  89     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_241]
  90.  90     at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_241]
  91.  91     at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  92.  92     ... 61 common frames omitted
  93.  93 Caused by: java.lang.NoClassDefFoundError: com/fasterxml/jackson/datatype/jsr310/ser/ZoneIdSerializer
  94.  94     at com.fasterxml.jackson.datatype.jsr310.JavaTimeModule.<init>(JavaTimeModule.java:158) ~[jackson-datatype-jsr310-2.11.3.jar:2.11.3]
  95.  95     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_241]
  96.  96     at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_241]
  97.  97     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_241]
  98.  98     at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[na:1.8.0_241]
  99.  99     at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:204) ~[spring-beans-5.2.11.RELEASE.jar:5.2.11.RELEASE]
  100. 100     ... 75 common frames omitted
  101. 101
  102. 102
  103. 103 Process finished with exit code 0

解决：

对应pom.xml：

  1.  1 <dependency>
  2.  2     <groupId>com.fasterxml.jackson.core</groupId>
  3.  3     <artifactId>jackson-annotations</artifactId>
  4.  4     <version>2.11.0</version>
  5.  5 </dependency>
  6.  6 <dependency>
  7.  7     <groupId>com.fasterxml.jackson.core</groupId>
  8.  8     <artifactId>jackson-core</artifactId>
  9.  9     <version>2.11.0</version>
  10. 10 </dependency>
  11. 11 <dependency>
  12. 12     <groupId>com.fasterxml.jackson.core</groupId>
  13. 13     <artifactId>jackson-databind</artifactId>
  14. 14     <version>2.11.0</version>
  15. 15 </dependency>

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