Error creating bean with name ‘processEngine‘: FactoryBean threw exception on object creation； neste

Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListenerorg.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘processEngine’: FactoryBean threw exception on object creation; nested exception is java.lang.NullPointerException

导致这个问题是因为客户导出数据时将Activiti之act_ge_property表职工数据清空导致的与ACT_GE_BYTEARRAY没关系

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第一次碰到这个问题一脸懵,Activiti之act_ge_property表跟ACT_GE_BYTEARRAY表

刚开始还以为是数据库的原因,切换了好几次数据库都是没有找到问题,然后切到一个能用的库(开发能用,因为要部署给测试的,所以整个库都是全新的),然后能就一直疑惑为什么开发的呢能用,测试的就是启动报错!很无奈,在网上找了好多例子,都是不行,最后找到一个这个人的博客信息(原文链接：https://blog.csdn.net/lb19921223/article/details/79213851里写自定义目录标题)),好像跟我的差不多,所以我就试试下,没想到跟他的情况一样,也是全新的库,那个工作流的表没导入数据才会导致的出错,携而过博客留意一下,避免下次入坑!!!

出错原因如下：

1：配置文件出错

2：本地的仓库的jar包有问题

3：act_ge_property表中的数据被清除了

在把所有的配置文件都核对过一遍后。还是不行。这时我将导入的数据库更换就好了

最后找到主要原因是：在act_ge_property表中的数据被清除了、使用demo类再次部署流程定义后。再次启动即可

写这篇博客来记录错误

牢记这个问题了。。。。。。。。

我在使用activiti整合ssm时，刚开始的时候还好好的。先使用了一个demo类。在数据库生成了activiti的24张表，后来删除了这个测试类。并且将24张表的内容全部清空。发布服务时出现如下异常

[INFO]
[INFO] --- tomcat7-maven-plugin:2.2:run (default-cli) @ activiti_spring_items ---
[INFO] Running war on http://localhost:9999/activiti_spring
[INFO] Using existing Tomcat server configuration at F:\maven\activiti_spring_items\target\tomcat
[INFO] create webapp with contextPath: /activiti_spring
六月 27, 2018 5:53:19 下午 org.apache.coyote.AbstractProtocol init
信息: Initializing ProtocolHandler ["http-bio-9999"]
六月 27, 2018 5:53:19 下午 org.apache.catalina.core.StandardService startInternal
信息: Starting service Tomcat
六月 27, 2018 5:53:19 下午 org.apache.catalina.core.StandardEngine startInternal
信息: Starting Servlet Engine: Apache Tomcat/7.0.47
六月 27, 2018 5:53:23 下午 org.apache.catalina.core.ApplicationContext log
信息: No Spring WebApplicationInitializer types detected on classpath
六月 27, 2018 5:53:24 下午 org.apache.catalina.core.ApplicationContext log
信息: Initializing Spring root WebApplicationContext
2018-06-27 17:53:24.211 [localhost-startStop-1] INFO org.springframework.web.context.ContextLoader -
               Root WebApplicationContext: initialization started
2018-06-27 17:53:24.289 [localhost-startStop-1] INFO o.s.web.context.support.XmlWebApplicationContext -
               Refreshing Root WebApplicationContext: startup date [Wed Jun 27 17:53:24 CST 2018]; root of context hierarchy
2018-06-27 17:53:24.335 [localhost-startStop-1] INFO o.s.beans.factory.xml.XmlBeanDefinitionReader -
               Loading XML bean definitions from file [F:\maven\activiti_spring_items\target\classes\applicationContext_activiti.xml]
2018-06-27 17:53:24.476 [localhost-startStop-1] INFO o.s.beans.factory.xml.XmlBeanDefinitionReader -
               Loading XML bean definitions from file [F:\maven\activiti_spring_items\target\classes\applicationContext_dao.xml]
2018-06-27 17:53:24.585 [localhost-startStop-1] INFO o.s.beans.factory.xml.XmlBeanDefinitionReader -
               Loading XML bean definitions from file [F:\maven\activiti_spring_items\target\classes\applicationContext_service.xml]
2018-06-27 17:53:24.897 [localhost-startStop-1] INFO o.s.c.support.PropertySourcesPlaceholderConfigurer -
               Loading properties file from class path resource [jdbc.properties]
2018-06-27 17:53:24.897 [localhost-startStop-1] INFO o.s.b.f.a.AutowiredAnnotationBeanPostProcessor -
               JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
2018-06-27 17:53:25.620 [localhost-startStop-1] INFO com.alibaba.druid.pool.DruidDataSource -
               {dataSource-1} inited
2018-06-27 17:53:27.322 [localhost-startStop-1] WARN o.s.web.context.support.XmlWebApplicationContext -
               Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'processEngine': FactoryBean threw exception on object creation; nested exception is java.lang.NullPointerException
2018-06-27 17:53:27.338 [localhost-startStop-1] INFO com.alibaba.druid.pool.DruidDataSource -
               {dataSource-1} closed
2018-06-27 17:53:27.338 [localhost-startStop-1] ERROR org.springframework.web.context.ContextLoader -
               Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'processEngine': FactoryBean threw exception on object creation; nested exception is java.lang.NullPointerException
   at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:175) ~[spring-beans-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:103) ~[spring-beans-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1595) ~[spring-beans-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:254) ~[spring-beans-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:368) ~[spring-beans-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1127) ~[spring-beans-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1022) ~[spring-beans-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510) ~[spring-beans-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:778) ~[spring-beans-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839) ~[spring-context-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538) ~[spring-context-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:444) ~[spring-web-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:326) ~[spring-web-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107) [spring-web-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4939) [tomcat-embed-core-7.0.47.jar:7.0.47]
   at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5434) [tomcat-embed-core-7.0.47.jar:7.0.47]
   at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [tomcat-embed-core-7.0.47.jar:7.0.47]
   at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) [tomcat-embed-core-7.0.47.jar:7.0.47]
   at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) [tomcat-embed-core-7.0.47.jar:7.0.47]
   at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_161]
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_161]
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_161]
   at java.lang.Thread.run(Thread.java:748) [na:1.8.0_161]
Caused by: java.lang.NullPointerException: null
   at org.activiti.engine.impl.db.DbSqlSession.dbSchemaUpdate(DbSqlSession.java:1081) ~[activiti-engine-5.18.0.jar:5.18.0]
   at org.activiti.engine.impl.db.DbSqlSession.performSchemaOperationsProcessEngineBuild(DbSqlSession.java:1473) ~[activiti-engine-5.18.0.jar:5.18.0]
   at org.activiti.engine.impl.SchemaOperationsProcessEngineBuild.execute(SchemaOperationsProcessEngineBuild.java:25) ~[activiti-engine-5.18.0.jar:5.18.0]
   at org.activiti.engine.impl.interceptor.CommandInvoker.execute(CommandInvoker.java:24) ~[activiti-engine-5.18.0.jar:5.18.0]
   at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:57) ~[activiti-engine-5.18.0.jar:5.18.0]
   at org.activiti.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:47) ~[activiti-spring-5.18.0.jar:5.18.0]
   at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:133) ~[spring-tx-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   at org.activiti.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:45) ~[activiti-spring-5.18.0.jar:5.18.0]
   at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:31) ~[activiti-engine-5.18.0.jar:5.18.0]
   at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:40) ~[activiti-engine-5.18.0.jar:5.18.0]
   at org.activiti.engine.impl.ProcessEngineImpl.<init>(ProcessEngineImpl.java:77) ~[activiti-engine-5.18.0.jar:5.18.0]
   at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.buildProcessEngine(ProcessEngineConfigurationImpl.java:427) ~[activiti-engine-5.18.0.jar:5.18.0]
   at org.activiti.spring.SpringProcessEngineConfiguration.buildProcessEngine(SpringProcessEngineConfiguration.java:65) ~[activiti-spring-5.18.0.jar:5.18.0]
   at org.activiti.spring.ProcessEngineFactoryBean.getObject(ProcessEngineFactoryBean.java:60) ~[activiti-spring-5.18.0.jar:5.18.0]
   at org.activiti.spring.ProcessEngineFactoryBean.getObject(ProcessEngineFactoryBean.java:32) ~[activiti-spring-5.18.0.jar:5.18.0]
   at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:168) ~[spring-beans-4.2.8.RELEASE.jar:4.2.8.RELEASE]
   ... 28 common frames omitted
六月 27, 2018 5:53:27 下午 org.apache.catalina.core.StandardContext listenerStart
严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'processEngine': FactoryBean threw exception on object creation; nested exception is java.lang.NullPointerException
   at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:175)
   at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:103)
   at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1595)
   at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:254)
   at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
   at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:368)
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1127)
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1022)
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510)
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
   at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
   at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
   at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
   at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
   at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:778)
   at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839)
   at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538)
   at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:444)
   at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:326)
   at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)
   at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4939)
   at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5434)
   at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
   at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
   at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
   at java.util.concurrent.FutureTask.run(FutureTask.java:266)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
   at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException
   at org.activiti.engine.impl.db.DbSqlSession.dbSchemaUpdate(DbSqlSession.java:1081)
   at org.activiti.engine.impl.db.DbSqlSession.performSchemaOperationsProcessEngineBuild(DbSqlSession.java:1473)
   at org.activiti.engine.impl.SchemaOperationsProcessEngineBuild.execute(SchemaOperationsProcessEngineBuild.java:25)
   at org.activiti.engine.impl.interceptor.CommandInvoker.execute(CommandInvoker.java:24)
   at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:57)
   at org.activiti.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:47)
   at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:133)
   at org.activiti.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:45)
   at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:31)
   at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:40)
   at org.activiti.engine.impl.ProcessEngineImpl.<init>(ProcessEngineImpl.java:77)
   at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.buildProcessEngine(ProcessEngineConfigurationImpl.java:427)
   at org.activiti.spring.SpringProcessEngineConfiguration.buildProcessEngine(SpringProcessEngineConfiguration.java:65)
   at org.activiti.spring.ProcessEngineFactoryBean.getObject(ProcessEngineFactoryBean.java:60)
   at org.activiti.spring.ProcessEngineFactoryBean.getObject(ProcessEngineFactoryBean.java:32)
   at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:168)
   ... 28 more
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版权声明：本文为CSDN博主「纠结的C」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/weixin_42557402/article/details/80832990

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