flowable生成流程图报空指针NPE:org.flowable.image.impl.DefaultProcessDiagramGenerator.initProcessDiagramCanvas

按照flowable的官方文档https://tkjohn.github.io/flowable-userguide/,创建好流程模型后,想把当前的流程图打印出来。但是报以下错误

19:55:16.855 [main] DEBUG org.flowable.common.engine.impl.interceptor.LogInterceptor - --- GetBpmnModelCmd finished --------------------------------------------------------
Exception in thread "main" java.lang.NullPointerException
    at org.flowable.image.impl.DefaultProcessDiagramGenerator.initProcessDiagramCanvas(DefaultProcessDiagramGenerator.java:897)
    at org.flowable.image.impl.DefaultProcessDiagramGenerator.generateProcessDiagram(DefaultProcessDiagramGenerator.java:541)
    at org.flowable.image.impl.DefaultProcessDiagramGenerator.generateDiagram(DefaultProcessDiagramGenerator.java:456)
    at Draw.main(Draw.java:86)

Caused by: 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:176) at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:101) at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1828) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getObjectForBeanInstance(AbstractAutowireCapableBeanFactory.java:1265) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:334) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1307) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227) at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:884) at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:788) ... 80 common frames omitted Caused by: java.lang.NullPointerException: null at org.flowable.engine.impl.db.ProcessDbSchemaManager.schemaUpdate(ProcessDbSchemaManager.java:232) at org.flowable.engine.impl.SchemaOperationsProcessEngineBuild.execute(SchemaOperationsProcessEngineBuild.java:54) at org.flowable.engine.impl.SchemaOperationsProcessEngineBuild.execute(SchemaOperationsProcessEngineBuild.java:28) at org.flowable.engine.impl.interceptor.CommandInvoker$1.run(CommandInvoker.java:67) at org.flowable.engine.impl.interceptor.CommandInvoker.executeOperation(CommandInvoker.java:140) at org.flowable.engine.impl.interceptor.CommandInvoker.executeOperations(CommandInvoker.java:114) at org.flowable.engine.impl.interceptor.CommandInvoker.execute(CommandInvoker.java:72) at org.flowable.engine.impl.interceptor.BpmnOverrideContextInterceptor.execute(BpmnOverrideContextInterceptor.java:26) at org.flowable.common.engine.impl.interceptor.TransactionContextInterceptor.execute(TransactionContextInterceptor.java:53) at org.flowable.common.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:105) at org.flowable.common.spring.SpringTransactionInterceptor.lambda$execute$0(SpringTransactionInterceptor.java:57) at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:140) at org.flowable.common.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:57) at org.flowable.common.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:30) at org.flowable.common.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:56) at org.flowable.engine.impl.ProcessEngineImpl.<init>(ProcessEngineImpl.java:83) at org.flowable.engine.impl.cfg.ProcessEngineConfigurationImpl.buildProcessEngine(ProcessEngineConfigurationImpl.java:917) at org.flowable.spring.SpringProcessEngineConfiguration.buildProcessEngine(SpringProcessEngineConfiguration.java:76) at org.flowable.spring.ProcessEngineFactoryBean.getObject(ProcessEngineFactoryBean.java:59) at org.flowable.spring.ProcessEngineFactoryBean.getObject(ProcessEngineFactoryBean.java:32) at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:169) ... 90 common frames omitted
09-03
评论 5
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值