03-Flowable整合Spring

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1. 引入jar包依赖

pom.xml中引入flowable和spring的相关依赖(也添加了mysql数据库连接驱动和druid连接池)，如下：

<dependency>
   <groupId>org.flowable</groupId>
    <artifactId>flowable-engine</artifactId>
    <version>${flowable.version}</version>
</dependency>

<dependency>
    <groupId>org.flowable</groupId>
    <artifactId>flowable-spring</artifactId>
    <version>${flowable.version}</version>
</dependency>
	
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>8.0.13</version>
</dependency>

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
    <version>1.0.2</version>
</dependency>

<dependency>
 	<groupId>junit</groupId>
   <artifactId>junit</artifactId>
   <version>4.12</version>
   <scope>test</scope>
</dependency>

<dependency>  
    <groupId>org.springframework</groupId>  
    <artifactId>spring-test</artifactId>  
    <version> 5.0.9.RELEASE  </version>  
    <scope>provided</scope>  
</dependency>

2. flowable配置

在src/main/resources下创建flowable-context.xml配置文件，主要配置内容如下：

<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="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
		<property name="driverClassName" value="com.mysql.cj.jdbc.Driver"></property>
		<property name="url" value="jdbc:mysql://localhost:3306/flowable?characterEncoding=UTF-8&amp;serverTimezone=GMT"></property>
		<property name="username" value="root"></property>
		<property name="password" value="123456" />
 	</bean>
  
  <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
   	<property name="dataSource" ref="dataSource"></property>
  </bean>

  <bean id="processEngineConfiguration" class="org.flowable.spring.SpringProcessEngineConfiguration">
    <property name="dataSource" ref="dataSource" />
    <property name="transactionManager" ref="transactionManager" />
    <property name="databaseSchemaUpdate" value="true" />
  </bean>
  
  <bean id="processEngine" class="org.flowable.spring.ProcessEngineFactoryBean">
    <property name="processEngineConfiguration" ref="processEngineConfiguration"/>
  </bean>

  <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" />

</beans>

3. Demo开发

新建测试类：FlowableTest.java

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:flowable-context.xml")
public class FlowableTest {

	@Autowired
	private RepositoryService repositoryService;

	@Autowired
	private RuntimeService runtimeService;

	@Autowired
	private TaskService taskService;

	@Autowired
	private HistoryService historyService;

	@Autowired
	private ManagementService managementService;

	/***
	 * 部署流程
	 */
	@Test
	public void testDeploy() {
		Deployment deployment = repositoryService.createDeployment()
				.name("testDeploy")
				.addClasspathResource("com/flowable/hello/leave.bpmn").deploy();
		System.out.println("Deploy successfullly, deployId:"
				+ deployment.getId() + "; deployName:" + deployment.getName());
	}

	/**
	 * 查询流程定义
	 */
	@Test
	public void queryProcessDefinitionTest() {
		ProcessDefinition processDefinition = repositoryService
				.createProcessDefinitionQuery().deploymentId("35001") // 用上一步中的结果
				.singleResult();
		System.out.println("Found process definition : "
				+ processDefinition.getName() + "; key:"
				+ processDefinition.getKey() + ";id:"
				+ processDefinition.getId());
	}

	/**
	 * 启动流程
	 */
	@Test
	public void startProcessInstanceTest() {
		Map<String, Object> variables = new HashMap<String, Object>();
		variables.put("employee", "jack");
		variables.put("nrOfHolidays", 3);
		variables.put("description", "回家看看");
		ProcessInstance processInstance = runtimeService
				.startProcessInstanceByKey("leave", variables);

	}

	/**
	 * 查询并完成任务
	 */
	@Test
	public void queryAndCompleteTask() {
		// 查询
		List<Task> tasks = taskService.createTaskQuery().taskAssignee("c")
				.list();
		System.out.println("You have " + tasks.size() + " tasks:");
		for (int i = 0; i < tasks.size(); i++) {
			System.out.println((i + 1) + ") " + tasks.get(i).getName());
		}

		// 选择
		Task task = tasks.get(0);
		Map<String, Object> processVariables = taskService.getVariables(task
				.getId());
		System.out.println(processVariables.get("employee") + " wants "
				+ processVariables.get("nrOfHolidays")
				+ " of holidays. Do you approve this?");

		// 完成
		Map<String, Object> variables = new HashMap<String, Object>();
		variables.put("approved", true);
		taskService.complete(task.getId(), variables);
	}

	/**
	 * 查询历史数据
	 */
	@Test
	public void queryHistoryData() {

		List<HistoricTaskInstance> list = historyService
				.createHistoricTaskInstanceQuery().finished().taskAssignee("a")
				.list();

		for (HistoricTaskInstance task : list) {
			System.out.println(task.getId() + " took "
					+ task.getDurationInMillis() + " milliseconds");
			System.out.println("======================================");
		}
	}

}

4. 源码下载

源码下载地址：https://download.csdn.net/download/huangjun0210/10834459