将Activiti作为Grails中的Spring Bean接线

2023年11月22日 261次阅读

我正在尝试创建一个使用Activiti作为其流程引擎的Grails应用程序.为此,我希望将主要的Activiti服务类(RuntimeService,TaskService等)连接为
Spring bean.

我相信我有正确的布线设置,但是当我运行一个调用运行时服务的简单集成测试时,我得到一个错误,Spring无法打开一个休眠会话(参见下面的完整堆栈跟踪).

更新：我可以使用run-app启动应用程序,然后调用一个调用我的服务的控制器操作,一切正常.因此,Activiti布线工作,它与Grails集成测试mixin有一些冲突.

我真的希望Activiti服务使用与Grails应用程序相同的数据源连接.我假设问题在于,当Grails已经有一个集成测试设置时,Activiti正在尝试创建自己的ConnectionHolder实例.

我的具体(也可能是误导)问题是,我如何配置我的Activiti ProcessEngine,以便它使用与我的Grails应用程序相同的数据源和hibernate连接？

更一般的问题是,如何才能最好地为我的Grails应用程序提供Activiti服务？我看过the Activiti plugin for grails,它的来源帮助我做到了这一点.但是,我宁愿不使用该插件;它没有使用最新的活动,它的开发并不是非常活跃,而且在任何情况下它都不是我真正需要的.

全栈跟踪

| Failure:  start approver request(com.package.MyServiceSpec)
|  org.springframework.transaction.CannotCreateTransactionException: Could not open Hibernate Session for transaction; nested exception is java.lang.IllegalStateException: Already value [org.springframework.jdbc.datasource.ConnectionHolder@7f2e1821] for key [org.springframework.jdbc.datasource.LazyConnectionDa
    at grails.test.mixin.integration.IntegrationTestMixin.initIntegrationTest(IntegrationTestMixin.groovy:58)
    at org.spockframework.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:138)
    at org.spockframework.runtime.extension.builtin.JUnitFixtureMethodsExtension$FixtureType$FixtureMethodInterceptor.intercept(JUnitFixtureMethodsExtension.java:145)
    at org.spockframework.runtime.extension.MethodInvocation.proceed(MethodInvocation.java:84)
    at org.spockframework.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:138)
    at org.spockframework.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:138)
    at org.spockframework.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:138)
Caused by: org.springframework.transaction.CannotCreateTransactionException: Could not open Hibernate Session for transaction; nested exception is java.lang.IllegalStateException: Already value [org.springframework.jdbc.datasource.ConnectionHolder@7f2e1821] for key [org.springframework.jdbc.datasource.LazyConn
    ... 7 more
Caused by: java.lang.IllegalStateException: Already value [org.springframework.jdbc.datasource.ConnectionHolder@7f2e1821] for key [org.springframework.jdbc.datasource.LazyConnectionDataSourceProxy@1b7aeb] bound to thread [main]
    ... 7 more
| Completed 1 integration test, 1 failed in 0m 1s

resources.groovy

import org.activiti.engine.ProcessEngine
import org.activiti.spring.ProcessEngineFactoryBean
import org.activiti.explorer.form.*
import org.activiti.spring.SpringProcessEngineConfiguration
import grails.util.Environment
//These imports are only needed in the test environment for building an h2 database for activiti during unit tests
import org.springframework.jdbc.datasource.DataSourceTransactionManager
import org.springframework.jdbc.datasource.SimpleDriverDataSource

beans = {            
    processEngineConfig(SpringProcessEngineConfiguration) {
        dataSource = ref('dataSource')
        transactionManager = ref('transactionManager')
        databaseType = 'oracle'
        databaseSchema = 'OURSCHEMA'
        databaseSchemaUpdate = false
        jobExecutorActivate = true
    }

    processEngine(ProcessEngineFactoryBean) {
        processEngineConfiguration = ref("processEngineConfig")
    }

    runtimeService(processEngine: "getRuntimeService")
    repositoryService(processEngine: "getRepositoryService")
    taskService(processEngine: "getTaskService")
    managementService(processEngine: "getManagementService")
    historyService(processEngine: "getHistoryService")
    formService(processEngine: "getFormService")
}

服务类

class MyService {

    def foapAuthFoapService
    def processEngine
    def runtimeService
    def repositoryService
    def taskService
    def managementService
    def historyService
    def formService

    /**
    * Start the activiti process.
    * 
    */
    def startRequest(String requester, String subject, String designatedApprover) {
        runtimeService.startProcessInstanceByKey('MyProcess', ["requester": requester, "subject": subject, "designatedApprover": designatedApprover])
    }
}

Spock测试

    def "start request"() {
        setup:
            def approverRequest = service.startRequest(requester, subject, designatedApprover)
            def variables = runtimeService.getVariables(approverRequest.id) //approverRequest.getProcessVariables()     
        expect:
            approverRequest instanceof ProcessInstance
            variables.entrySet().contailsAll(["designatedApprover": designatedApprover, "requester": requester, "subject": subject].entrySet())
        where:
            requester | subject |   designatedApprover
            "abc123"  | "def456"|   "hij789"
    }

最佳答案 我们在Alephsa维护grails activiti插件更新到最新版本的Activiti(5.17),我们正在努力更新到版本6.你可以在
bintray找到插件,也可以使用grails activiti spring安全插件.在我们的
github帐户中,您可以找到指导您工作的源代码.

问候.

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