spring boot2与activiti7完美结合（踩坑）

kinbug [进阶者]

发布于 2020-02-17 15:47:30

17.1K1

发布于 2020-02-17 15:47:30

文章被收录于专栏：IT进修之路

前言

Activiti项目是一项新的基于Apache许可的开源BPM平台，从基础开始构建，旨在提供支持新的BPMN 2.0标准，包括支持对象管理组（OMG），面对新技术的机遇，诸如互操作性和云架构，提供技术实现。

架构师Tom Baeyens说：“ Activiti有非常大的影响力来改变目前BPM的生态。Activiti的Apache授权，完整的功能，将使Activiti到达一个新的水平。Activiti将推动业界的创新，因为BPM技术可以广泛而自由地被应用。通过实现这些想法以及开源社区的努力，也让Activiti成为事实上的 BPM和BPMN标准执行“。

SpringSource的首席技术官Adrian Coyler说道：”这是一个对Spring开发人员和Java社区总体的发展非常令人兴奋的事情，长期以来一直需要一个Apache许可的流程引擎，这对许多应用系统非常实用的需求。我们认为，Activiti作为新的应用领域扩展到的Java和开源的发展，特别是在云架构上”。

扯的有点远了，Activiti7主要是分两大块一、Activiti Cloud是一组从头开始设计的Cloud Native组件，可在分布式环境中使用。我们选择了Kubernetes作为我们的主要部署基础架构，并且我们将Spring Cloud / Spring Boot与Docker一起用于这些组件的容器化。但是GitHub上关注的人都很少，本次就忽略了。二、Activiti Core就是对以前的版本进行了一些归纳和整理。也是今儿的主题。

整合

一、环境与搭建springboot项目

Java8，Springboot2，Activiti7，druid1.1.16，mysql8

地址：http://start.spring.io/ 其它方式都行，具体...略...

二、坐标定位（pom）

<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.mybatis.spring.boot</groupId>
			<artifactId>mybatis-spring-boot-starter</artifactId>
			<version>2.1.1</version>
		</dependency>

		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<scope>runtime</scope>
		</dependency>
		<!-- 阿里 druid 数据源 -->
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>druid</artifactId>
			<version>1.1.16</version>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-security</artifactId>
		</dependency>
		<dependency>
			<groupId>org.activiti.dependencies</groupId>
			<artifactId>activiti-dependencies</artifactId>
			<version>7.1.0.M5</version>
			<type>pom</type>
		</dependency>
		<dependency>
			<groupId>org.activiti</groupId>
			<artifactId>activiti-spring-boot-starter</artifactId>
			<version>7.1.0.M5</version>
		</dependency>
		<!-- Activiti生成流程图 -->
		<dependency>
			<groupId>org.activiti</groupId>
			<artifactId>activiti-image-generator</artifactId>
			<version>7.1.0.M5</version>
		</dependency>

		<dependency>
			<groupId>io.springfox</groupId>
			<artifactId>springfox-swagger2</artifactId>
			<version>2.9.2</version>
		</dependency>
		<dependency>
			<groupId>io.springfox</groupId>
			<artifactId>springfox-swagger-ui</artifactId>
			<version>2.9.2</version>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-configuration-processor</artifactId>
			<optional>true</optional>
		</dependency>
		
		<!-- 工具jar Start -->
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
		</dependency>
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>fastjson</artifactId>
			<version>1.2.57</version>
		</dependency>
		<dependency>
			<groupId>org.apache.commons</groupId>
			<artifactId>commons-lang3</artifactId>
		</dependency>
		<!-- 工具jar end -->
		
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
			<exclusions>
				<exclusion>
					<groupId>org.junit.vintage</groupId>
					<artifactId>junit-vintage-engine</artifactId>
				</exclusion>
			</exclusions>
		</dependency>
	</dependencies>

三、整合SpringSecurity

因为acitviti是整合了springSecurity的，根据官方dome找到2个工具类：

一： https://github.com/Activiti/activiti-examples/blob/master/activiti-api-basic-task-example/src/main/java/org/activiti/examples/DemoApplicationConfiguration.java

二： https://github.com/Activiti/activiti-examples/blob/master/activiti-api-basic-task-example/src/main/java/org/activiti/examples/SecurityUtil.java

把这个2个类注入到spring容器中。

四、绘制自己的BPMN文件

我的是：

<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/test">
  <process id="myProcess_1" name="My process" isExecutable="true">
    <startEvent id="startevent1" name="Start"></startEvent>
    <userTask id="usertask1" name="one" activiti:candidateGroups="activitiTeam"></userTask>
    <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>
    <userTask id="usertask2" name="two" activiti:candidateGroups="activitiTeam"></userTask>
    <sequenceFlow id="flow2" sourceRef="usertask1" targetRef="usertask2"></sequenceFlow>
    <endEvent id="endevent1" name="End"></endEvent>
    <sequenceFlow id="flow3" sourceRef="usertask2" targetRef="endevent1"></sequenceFlow>
  </process>
  <bpmndi:BPMNDiagram id="BPMNDiagram_myProcess_1">
    <bpmndi:BPMNPlane bpmnElement="myProcess_1" id="BPMNPlane_myProcess_1">
      <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="50.0" y="160.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">
        <omgdc:Bounds height="55.0" width="105.0" x="130.0" y="150.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="usertask2" id="BPMNShape_usertask2">
        <omgdc:Bounds height="55.0" width="105.0" x="280.0" y="150.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="430.0" y="160.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
        <omgdi:waypoint x="85.0" y="177.0"></omgdi:waypoint>
        <omgdi:waypoint x="130.0" y="177.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
        <omgdi:waypoint x="235.0" y="177.0"></omgdi:waypoint>
        <omgdi:waypoint x="280.0" y="177.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
        <omgdi:waypoint x="385.0" y="177.0"></omgdi:waypoint>
        <omgdi:waypoint x="430.0" y="177.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
    </bpmndi:BPMNPlane>
  </bpmndi:BPMNDiagram>
</definitions>

图：

很简单的一个流程。

五、测试

@RunWith(SpringRunner.class)
@SpringBootTest
public class BootActivitiApplicationTests {

	@Autowired
	private ProcessRuntime processRuntime;

	@Autowired
	private TaskRuntime taskRuntime;

	@Autowired
	private SecurityUtil securityUtil;

	@Autowired
	private RepositoryService repositoryService;


	@Test // 查看流程
	public void contextLoads() {
		securityUtil.logInAs("salaboy");
		Page processDefinitionPage = processRuntime.processDefinitions(Pageable.of(0, 10));
		System.err.println("已部署的流程个数：" + processDefinitionPage.getTotalItems());
		for (Object obj : processDefinitionPage.getContent()) {
			System.err.println("流程定义：" + obj);
		}
	}
}

如果你的版本和我是一样的话，多半就会报错，sql少字段。这个应该是一个官方的BUG，只需要在 act_re_deployment中加两个字段就好了： VERSION_和 PROJECT_RELEASE_VERSION_ 然后重新运行，应该就对了。但是打印的已部署个数却是0。说好的 processes 下自动部署呢，最后自己部署一下，发现一切都对了的。下面我给一些我测试的部署，查询，启动、执行的例子。

@RunWith(SpringRunner.class)
@SpringBootTest
public class BootActivitiApplicationTests {

	@Autowired
	private ProcessRuntime processRuntime;

	@Autowired
	private TaskRuntime taskRuntime;

	@Autowired
	private SecurityUtil securityUtil;

	@Autowired
	private RepositoryService repositoryService;

	@Test // 部署流程
	public void deploy() {
		securityUtil.logInAs("salaboy");
		String bpmnName = "MyProcess";
		DeploymentBuilder deploymentBuilder = repositoryService.createDeployment().name("请假流程");
		Deployment deployment = null;
		try {
			deployment = deploymentBuilder.addClasspathResource("processes/" + bpmnName + ".bpmn")
					.addClasspathResource("processes/" + bpmnName + ".png").deploy();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	@Test // 远程外部BPMN
	public void deploy2() {
		securityUtil.logInAs("salaboy");
		try {
			Deployment deployment = null;
			InputStream in = new FileInputStream(new File("C:\\Users\\飞牛\\git\\SpringBoot2_Activiti7\\src\\main\\resources\\processes\\leaveProcess.zip"));
			ZipInputStream zipInputStream = new ZipInputStream(in);
			deployment = repositoryService.createDeployment().name("请假流程2")
					// 指定zip格式的文件完成部署
					.addZipInputStream(zipInputStream).deploy();// 完成部署
			zipInputStream.close();
		} catch (Exception e) {
			// TODO 上线时删除
			e.printStackTrace();
		}
	}

	@Test // 查看流程
	public void contextLoads() {
		securityUtil.logInAs("salaboy");
		Page processDefinitionPage = processRuntime.processDefinitions(Pageable.of(0, 10));
		System.err.println("已部署的流程个数：" + processDefinitionPage.getTotalItems());
		for (Object obj : processDefinitionPage.getContent()) {
			System.err.println("流程定义：" + obj);
		}
	}

	@Test // 启动流程
	public void startInstance() {
		securityUtil.logInAs("salaboy");
		ProcessInstance processInstance = processRuntime
				.start(ProcessPayloadBuilder.start().withProcessDefinitionKey("myProcess_1").build());
		System.err.println("流程实例ID：" + processInstance.getId());
	}

	@Test // 执行流程
	public void testTask() {
		securityUtil.logInAs("salaboy");
		Page<Task> page = taskRuntime.tasks(Pageable.of(0, 10));
		if (page.getTotalItems() > 0) {
			for (Task task : page.getContent()) {
				System.err.println("当前任务有1：" + task);
				// 拾取
				taskRuntime.claim(TaskPayloadBuilder.claim().withTaskId(task.getId()).build());
				// 执行
				taskRuntime.complete(TaskPayloadBuilder.complete().withTaskId(task.getId()).build());
			}
		} else {
			System.err.println("没的任务1");
		}

		page = taskRuntime.tasks(Pageable.of(0, 10));
		if (page.getTotalItems() > 0) {
			for (Task task : page.getContent()) {
				System.err.println("当前任务有2：" + task);
			}
		} else {
			System.err.println("没的任务2");
		}
	}
}

项目地址： https://gitee.com/flying-cattle/boot-activiti

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