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

出现以下的异常我们下异常的原因

Type 异常报告

消息 Servlet.init() for servlet [Global] threw exception

描述 服务器遇到一个意外的情况,阻止它完成请求。

Exception

javax.servlet.ServletException: Servlet.init() for servlet [Global] threw exception
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:678)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367)
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
org.apache.coyote.AbstractProtocol C o n n e c t i o n H a n d l e r . p r o c e s s ( A b s t r a c t P r o t o c o l . j a v a : 860 ) o r g . a p a c h e . t o m c a t . u t i l . n e t . N i o E n d p o i n t ConnectionHandler.process(AbstractProtocol.java:860) org.apache.tomcat.util.net.NioEndpoint SocketProcessor.doRun(NioEndpoint.java:1591)
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
java.base/java.util.concurrent.ThreadPoolExecutor W o r k e r . r u n ( T h r e a d P o o l E x e c u t o r . j a v a : 628 ) o r g . a p a c h e . t o m c a t . u t i l . t h r e a d s . T a s k T h r e a d Worker.run(ThreadPoolExecutor.java:628) org.apache.tomcat.util.threads.TaskThread WrappingRunnable.run(TaskThread.java:61)
java.base/java.lang.Thread.run(Thread.java:834)
Root Cause

org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘dataSource’ defined in class path resource [spring.xml]: Error setting property values; nested exception is org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are:
PropertyAccessException 1: org.springframework.beans.MethodInvocationException: Property ‘driverClassName’ threw exception; nested exception is java.lang.IllegalStateException: Could not load JDBC driver class [com.mysql.cj.jdbc.Driver]
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1493)
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1197)
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
org.springframework.beans.factory.support.AbstractBeanFactory 1. g e t O b j e c t ( A b s t r a c t B e a n F a c t o r y . j a v a : 304 ) o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . D e f a u l t S i n g l e t o n B e a n R e g i s t r y . g e t S i n g l e t o n ( D e f a u l t S i n g l e t o n B e a n R e g i s t r y . j a v a : 228 ) o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . A b s t r a c t B e a n F a c t o r y . d o G e t B e a n ( A b s t r a c t B e a n F a c t o r y . j a v a : 300 ) o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . A b s t r a c t B e a n F a c t o r y . g e t B e a n ( A b s t r a c t B e a n F a c t o r y . j a v a : 195 ) o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . D e f a u l t L i s t a b l e B e a n F a c t o r y . p r e I n s t a n t i a t e S i n g l e t o n s ( D e f a u l t L i s t a b l e B e a n F a c t o r y . j a v a : 700 ) o r g . s p r i n g f r a m e w o r k . c o n t e x t . s u p p o r t . A b s t r a c t A p p l i c a t i o n C o n t e x t . f i n i s h B e a n F a c t o r y I n i t i a l i z a t i o n ( A b s t r a c t A p p l i c a t i o n C o n t e x t . j a v a : 760 ) o r g . s p r i n g f r a m e w o r k . c o n t e x t . s u p p o r t . A b s t r a c t A p p l i c a t i o n C o n t e x t . r e f r e s h ( A b s t r a c t A p p l i c a t i o n C o n t e x t . j a v a : 482 ) o r g . s p r i n g f r a m e w o r k . c o n t e x t . s u p p o r t . C l a s s P a t h X m l A p p l i c a t i o n C o n t e x t . < i n i t > ( C l a s s P a t h X m l A p p l i c a t i o n C o n t e x t . j a v a : 139 ) o r g . s p r i n g f r a m e w o r k . c o n t e x t . s u p p o r t . C l a s s P a t h X m l A p p l i c a t i o n C o n t e x t . < i n i t > ( C l a s s P a t h X m l A p p l i c a t i o n C o n t e x t . j a v a : 83 ) c o m . i m o o c . s m . g l o b a l . D i s p a t c h S e r v l e t . i n i t ( D i s p a t c h S e r v l e t . j a v a : 25 ) j a v a x . s e r v l e t . G e n e r i c S e r v l e t . i n i t ( G e n e r i c S e r v l e t . j a v a : 158 ) o r g . a p a c h e . c a t a l i n a . a u t h e n t i c a t o r . A u t h e n t i c a t o r B a s e . i n v o k e ( A u t h e n t i c a t o r B a s e . j a v a : 526 ) o r g . a p a c h e . c a t a l i n a . v a l v e s . E r r o r R e p o r t V a l v e . i n v o k e ( E r r o r R e p o r t V a l v e . j a v a : 92 ) o r g . a p a c h e . c a t a l i n a . v a l v e s . A b s t r a c t A c c e s s L o g V a l v e . i n v o k e ( A b s t r a c t A c c e s s L o g V a l v e . j a v a : 678 ) o r g . a p a c h e . c a t a l i n a . c o n n e c t o r . C o y o t e A d a p t e r . s e r v i c e ( C o y o t e A d a p t e r . j a v a : 343 ) o r g . a p a c h e . c o y o t e . h t t p 11. H t t p 11 P r o c e s s o r . s e r v i c e ( H t t p 11 P r o c e s s o r . j a v a : 367 ) o r g . a p a c h e . c o y o t e . A b s t r a c t P r o c e s s o r L i g h t . p r o c e s s ( A b s t r a c t P r o c e s s o r L i g h t . j a v a : 65 ) o r g . a p a c h e . c o y o t e . A b s t r a c t P r o t o c o l 1.getObject(AbstractBeanFactory.java:304) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:700) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482) org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139) org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83) com.imooc.sm.global.DispatchServlet.init(DispatchServlet.java:25) javax.servlet.GenericServlet.init(GenericServlet.java:158) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:678) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367) org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) org.apache.coyote.AbstractProtocol ConnectionHandler.process(AbstractProtocol.java:860)
org.apache.tomcat.util.net.NioEndpoint S o c k e t P r o c e s s o r . d o R u n ( N i o E n d p o i n t . j a v a : 1591 ) o r g . a p a c h e . t o m c a t . u t i l . n e t . S o c k e t P r o c e s s o r B a s e . r u n ( S o c k e t P r o c e s s o r B a s e . j a v a : 49 ) j a v a . b a s e / j a v a . u t i l . c o n c u r r e n t . T h r e a d P o o l E x e c u t o r . r u n W o r k e r ( T h r e a d P o o l E x e c u t o r . j a v a : 1128 ) j a v a . b a s e / j a v a . u t i l . c o n c u r r e n t . T h r e a d P o o l E x e c u t o r SocketProcessor.doRun(NioEndpoint.java:1591) org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) java.base/java.util.concurrent.ThreadPoolExecutor Worker.run(ThreadPoolExecutor.java:628)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.base/java.lang.Thread.run(Thread.java:834)
Root Cause

org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are:
PropertyAccessException 1: org.springframework.beans.MethodInvocationException: Property ‘driverClassName’ threw exception; nested exception is java.lang.IllegalStateException: Could not load JDBC driver class [com.mysql.cj.jdbc.Driver]
org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:108)
org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:62)
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1489)
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1197)
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
org.springframework.beans.factory.support.AbstractBeanFactory 1. g e t O b j e c t ( A b s t r a c t B e a n F a c t o r y . j a v a : 304 ) o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . D e f a u l t S i n g l e t o n B e a n R e g i s t r y . g e t S i n g l e t o n ( D e f a u l t S i n g l e t o n B e a n R e g i s t r y . j a v a : 228 ) o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . A b s t r a c t B e a n F a c t o r y . d o G e t B e a n ( A b s t r a c t B e a n F a c t o r y . j a v a : 300 ) o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . A b s t r a c t B e a n F a c t o r y . g e t B e a n ( A b s t r a c t B e a n F a c t o r y . j a v a : 195 ) o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . s u p p o r t . D e f a u l t L i s t a b l e B e a n F a c t o r y . p r e I n s t a n t i a t e S i n g l e t o n s ( D e f a u l t L i s t a b l e B e a n F a c t o r y . j a v a : 700 ) o r g . s p r i n g f r a m e w o r k . c o n t e x t . s u p p o r t . A b s t r a c t A p p l i c a t i o n C o n t e x t . f i n i s h B e a n F a c t o r y I n i t i a l i z a t i o n ( A b s t r a c t A p p l i c a t i o n C o n t e x t . j a v a : 760 ) o r g . s p r i n g f r a m e w o r k . c o n t e x t . s u p p o r t . A b s t r a c t A p p l i c a t i o n C o n t e x t . r e f r e s h ( A b s t r a c t A p p l i c a t i o n C o n t e x t . j a v a : 482 ) o r g . s p r i n g f r a m e w o r k . c o n t e x t . s u p p o r t . C l a s s P a t h X m l A p p l i c a t i o n C o n t e x t . < i n i t > ( C l a s s P a t h X m l A p p l i c a t i o n C o n t e x t . j a v a : 139 ) o r g . s p r i n g f r a m e w o r k . c o n t e x t . s u p p o r t . C l a s s P a t h X m l A p p l i c a t i o n C o n t e x t . < i n i t > ( C l a s s P a t h X m l A p p l i c a t i o n C o n t e x t . j a v a : 83 ) c o m . i m o o c . s m . g l o b a l . D i s p a t c h S e r v l e t . i n i t ( D i s p a t c h S e r v l e t . j a v a : 25 ) j a v a x . s e r v l e t . G e n e r i c S e r v l e t . i n i t ( G e n e r i c S e r v l e t . j a v a : 158 ) o r g . a p a c h e . c a t a l i n a . a u t h e n t i c a t o r . A u t h e n t i c a t o r B a s e . i n v o k e ( A u t h e n t i c a t o r B a s e . j a v a : 526 ) o r g . a p a c h e . c a t a l i n a . v a l v e s . E r r o r R e p o r t V a l v e . i n v o k e ( E r r o r R e p o r t V a l v e . j a v a : 92 ) o r g . a p a c h e . c a t a l i n a . v a l v e s . A b s t r a c t A c c e s s L o g V a l v e . i n v o k e ( A b s t r a c t A c c e s s L o g V a l v e . j a v a : 678 ) o r g . a p a c h e . c a t a l i n a . c o n n e c t o r . C o y o t e A d a p t e r . s e r v i c e ( C o y o t e A d a p t e r . j a v a : 343 ) o r g . a p a c h e . c o y o t e . h t t p 11. H t t p 11 P r o c e s s o r . s e r v i c e ( H t t p 11 P r o c e s s o r . j a v a : 367 ) o r g . a p a c h e . c o y o t e . A b s t r a c t P r o c e s s o r L i g h t . p r o c e s s ( A b s t r a c t P r o c e s s o r L i g h t . j a v a : 65 ) o r g . a p a c h e . c o y o t e . A b s t r a c t P r o t o c o l 1.getObject(AbstractBeanFactory.java:304) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:700) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482) org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139) org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83) com.imooc.sm.global.DispatchServlet.init(DispatchServlet.java:25) javax.servlet.GenericServlet.init(GenericServlet.java:158) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:678) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367) org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) org.apache.coyote.AbstractProtocol ConnectionHandler.process(AbstractProtocol.java:860)
org.apache.tomcat.util.net.NioEndpoint S o c k e t P r o c e s s o r . d o R u n ( N i o E n d p o i n t . j a v a : 1591 ) o r g . a p a c h e . t o m c a t . u t i l . n e t . S o c k e t P r o c e s s o r B a s e . r u n ( S o c k e t P r o c e s s o r B a s e . j a v a : 49 ) j a v a . b a s e / j a v a . u t i l . c o n c u r r e n t . T h r e a d P o o l E x e c u t o r . r u n W o r k e r ( T h r e a d P o o l E x e c u t o r . j a v a : 1128 ) j a v a . b a s e / j a v a . u t i l . c o n c u r r e n t . T h r e a d P o o l E x e c u t o r SocketProcessor.doRun(NioEndpoint.java:1591) org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) java.base/java.util.concurrent.ThreadPoolExecutor Worker.run(ThreadPoolExecutor.java:628)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.base/java.lang.Thread.run(Thread.java:834)
):注意 主要问题的全部 stack 信息可以在 server logs 里查看

排除原因,下图出现异常

java.lang.IllegalStateException:无法加载JDBC驱动程序类[com.mysql.cj.jdbc.Driver]

在这里插入图片描述

出现这种异常的原因是因为Mysql版本的问题:

主要因为MySQL5用的驱动url是com.mysql.jdbc.Driver,MySQL6以后用的是com.mysql.cj.jdbc.Driver。版本不匹配便会报驱动类已过时的错误。

在代码中我们是用的是com.mysql.cj.jdbc.Driver,下面图片可以看到我的代码中导入的jar是Mysql5的驱动,所以应该使用的是com.mysql.jdbc.Driver,而不是com.mysql.cj.jdbc.Driver

在这里插入图片描述

解决方法:
ONE:替换Mysql驱动版本,改成Mysql6以上的版本,这里我改成的是Mysql8.0.17,因为我比较常用这个版本,需要注意的是,使用com.mysql.cj.jdbc.Driver, 需要指定时区serverTimezone,否则会报如下错误
在这里插入图片描述
在这里插入图片描述

TWO:替换数据库的语句com.mysql.cj.jdbc.Driver改成com.mysql.jdbc.Driver
在这里插入图片描述

上述两种方法都可以解决

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