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activiti整合spring

2024-08-02 05:26:42   221人阅读

activiti的配置文件其实就是一份spring的配置文件，只是默认将processEngineConfiguration做为一个bean来读取。

当和spring进一步整合时，需要使用 SpringProcessEngineConfiguration（存在activiti-spring-5.10.jar） 类，其继承processEngineConfigurationImpl,activiti默认使用mybatis事务，使用 SpringProcessEngineConfiguration 时，必须指定 transactionManager 属性。

1. SpringProcessEngineConfiguration配置如下：

　　<bean id="dataSource" class="org.springframework.jdbc.datasource.SimpleDriverDataSource">
　　　　<!-- 连接属性-->
    </bean>    <!-- 配置事务管理器 -->    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">        <property name="dataSource" ref="dataSource" />    </bean>    <!-- 流程引擎的配置bean -->    <bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">        <property name="dataSource" ref="dataSource" />        <property name="databaseSchemaUpdate" value="drop-create" />        <property name="transactionManager" ref="transactionManager" />        <!-- 配置启动时加载的流程文件资源  -->        <property name="deploymentResources">             <list>                 <value>/bpmn/EngineConfigurationTest.bpmn</value>                 <value>/bpmn/EngineConfigurationTest2.bpmn</value>             </list>         </property>    </bean>

如果classpath下有多个文件，可以 

<property name="deploymentResources"  value="classpath:*:/bpmn/*.bpmn"/>

2. 接下来便可以通过 processEngineConfiguration bean 来得到流程引擎了：

    <!-- 流程引擎的bean -->    <bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean">        <property name="processEngineConfiguration" ref="processEngineConfiguration" />    </bean>

 

3. activiti的各个服务组件(processEngineConfigurationImpl 创建)，若由spring管理的话：

    <bean id="repositoryService" factory-bean="processEngine" factory-method="getRepositoryService" />    <bean id="runtimeService" factory-bean="processEngine" factory-method="getRuntimeService" />    <bean id="taskService" factory-bean="processEngine" factory-method="getTaskService" />    <bean id="historyService" factory-bean="processEngine" factory-method="getHistoryService" />    <bean id="managementService" factory-bean="processEngine" factory-method="getManagementService" />

如果在业务service中使用这些组件，则直接ref注入即可。

4. 在activiti中使用spring的bean，则需要让activiti知道bean的存在

    <!-- 流程引擎的配置bean -->    <bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">        <property name="dataSource" ref="dataSource" />        <property name="databaseSchemaUpdate" value="drop-create" />        <property name="transactionManager" ref="transactionManager" />        <!-- 向processEngineConfiguration注入bean -->        <property name="beans">            <map>                <entry key="myService" value-ref="myService" />            </map>        </property>    </bean>

在activiti 流程文件中指定使用这个bean

    <process id="process1" name="process1">        <startEvent id="startevent1" name="Start"></startEvent>        <serviceTask id="servicetask1" name="Service Task"            activiti:expression="#{myService.serviceMethod(name)}"></serviceTask>

表示使用myservice的serviceMethod方法，代码中可以传入参数启动流程

        ApplicationContext ctx = new ClassPathXmlApplicationContext(new String[] { "activiti.use.bean.xml" });        // 得到Activiti的服务组件        RepositoryService repositoryService = (RepositoryService) ctx.getBean("repositoryService");        RuntimeService runtimeService = (RuntimeService) ctx.getBean("runtimeService");        // 部署流程文件        repositoryService.createDeployment().addClasspathResource("bpmn/ActivitiUseBean.bpmn").deploy();        // 初始化流程参数        Map<String, Object> vars = new HashMap<String, Object>();        vars.put("name", "tom");        // 启动流程        runtimeService.startProcessInstanceByKey("process1", vars);

 

activiti整合spring


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