Activiti createTaskQuery().processInstanceId returns empty

Question

我正在使用具有以下 maven 依赖项的 activiti。

<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-cdi</artifactId>
<version>5.17.0</version>
<exclusions>
<exclusion>
<groupId>com.google.collections</groupId>
<artifactId>google-collections</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-image-generator</artifactId>
<version>5.17.0</version>
</dependency>

这是活动.cfg.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="transactionManager" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName" value="java:jboss/TransactionManager"></property>
<property name="resourceRef" value="true" />
</bean>
<!-- process engine configuration -->
<bean id="processEngineConfiguration" class="org.activiti.cdi.CdiJtaProcessEngineConfiguration">
<property name="dataSourceJndiName" value="asdfasdf" />
<property name="databaseType" value="oracle" />
<property name="transactionManager" ref="transactionManager" />
<property name="transactionsExternallyManaged" value="true" />
<property name="transactionsExternallyManaged" value="false" />
<property name="jobExecutorActivate" value="true" />
<property name="jdbcMaxActiveConnections" value="10" />
<property name="jdbcMaxIdleConnections" value="10" />
<property name="jdbcMaxCheckoutTime" value="20000" />
<property name="jdbcMaxWaitTime" value="20000 " />
<property name="history" value="audit" />
</bean>
</beans>

一切正常，但在同一事务中运行startProcessInstanceKey后，我无法获得taskService.createTaskQuery().processInstanceId的任务。

下面是示例代码。

@Inject
protected RuntimeService runtimeService;
@Inject
protected TaskService taskService;
....
ProcessInstance instance = runtimeService.startProcessInstanceByKey(processDefinitionKey, getVariables());
Task task = taskService.createTaskQuery().processInstanceId(instance .getId).singleResult();
//task = null ?????.

你能帮我解决问题吗？

Answer 1

试试这个

taskService.createTaskQuery().processInstanceId(instance.getId).active().singleResult();