Java activiti 6中表达式中使用的未知方法

从activiti 5迁移到6后，初始化应用程序时出现以下错误：

Caused by: org.activiti5.engine.ActivitiException: Unknown method used in expression: #{elCorService.makePlat(corWorkflowService.buildContext(execution))}
    at org.activiti5.engine.impl.el.JuelExpression.getValue(JuelExpression.java:56)
    at org.activiti5.engine.impl.bpmn.behavior.ServiceTaskExpressionActivityBehavior.execute(ServiceTaskExpressionActivityBehavior.java:71)
    ... 199 more

... Caused by: javax.el.MethodNotFoundException: Method not found: class com.sun.proxy.$Proxy360.buildContext(org.activiti.engine.impl.persistence.entity.ExecutionEntityImpl)

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您是否可能有引用“org.activiti.engine.impl.persistence.entity.ExecutionEntity”而不是“org.activiti.engine.impl.persistence.entity.ExecutionEntity”的自定义代码？特别是“corWorkflowService.buildContext（）”

这是5到6之间的记录变更：

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最好在activiti社区问这个问题：

5.7. EntityManagers

In Activiti version 5, all EntityManager (responsible for persistence but also certain 
logic) classes did not have an interface. In version 6, all EntityManager classes have 
been renamed to have Impl as suffix and an interface without the suffix. This 
effectively means that the version 5 EntityManager class name is now the name of the 
corresponding interface.

All EntityManager interfaces extend the generic 
org.activiti.engine.impl.persistence.entity.EntityManager interface. All 
implementation classes extend a generic AbstractEntityManager interface.

Also, for consistency: * The UserIdentityManager interface has been renamed to 
UserEntityManager * The GroupIdentityManager interface has been renamed to 
GroupEntityManager