Activiti学习之spring boot 与activiti整合

1、新建spring boot 项目

使用IDEA新建一个spring boot 项目，项目结构如下：

2、增加activiti、jpa、mysql等依赖

<dependencies>
        <dependency>
            <groupId>org.activitigroupId>
            <artifactId>activiti-spring-boot-starter-basicartifactId>
            <version>5.21.0version>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-data-jpaartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-thymeleafartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>

        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
            <scope>runtimescope>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-tomcatartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-testartifactId>
            <scope>testscope>
        dependency>
    dependencies>

3、配置数据库连接信息

新建一个名为spring-boot-activiti的数据库并且在application.properties中添加如下配置信息：

##############################################################################
#########datasource
##############################################################################
spring.datasource.url=jdbc:mysql://localhost:3306/spring-boot-activiti?characterEncoding=utf8&useSSL=true
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
#自动创建、更新、验证数据库表结构
spring.jpa.properties.hibernate.hbm2ddl.auto=update
spring.jpa.show-sql=true

项目启动后会自动创建activiti相关的数据库表数据库表的含义请参考：http://blog.csdn.net/hj7jay/article/details/51302829

4、新建activiti流程图

这里是通过Eclipse的activiti插件绘制的流程图，在图中红框部分添加如下代码：${resumeService.storeResume()}

流程图的代码如下：

<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 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" name="My process" isExecutable="true">
    <startEvent id="startevent1" name="Start">startEvent>
    <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="servicetask1">sequenceFlow>
    <endEvent id="endevent1" name="End">endEvent>
    <sequenceFlow id="flow2" sourceRef="servicetask1" targetRef="endevent1">sequenceFlow>
    <serviceTask id="servicetask1" name="User Task" activiti:expression="${resumeService.storeResume()}">serviceTask>
  process>
  <bpmndi:BPMNDiagram id="BPMNDiagram_myProcess">
    <bpmndi:BPMNPlane bpmnElement="myProcess" id="BPMNPlane_myProcess">
      <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="130.0" y="270.0">omgdc:Bounds>
      bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="360.0" y="270.0">omgdc:Bounds>
      bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="servicetask1" id="BPMNShape_servicetask1">
        <omgdc:Bounds height="55.0" width="105.0" x="210.0" y="260.0">omgdc:Bounds>
      bpmndi:BPMNShape>
      <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
        <omgdi:waypoint x="165.0" y="287.0">omgdi:waypoint>
        <omgdi:waypoint x="210.0" y="287.0">omgdi:waypoint>
      bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
        <omgdi:waypoint x="315.0" y="287.0">omgdi:waypoint>
        <omgdi:waypoint x="360.0" y="287.0">omgdi:waypoint>
      bpmndi:BPMNEdge>
    bpmndi:BPMNPlane>
  bpmndi:BPMNDiagram>
definitions>

图中的任务为系统任务，当执行到该任务时系统会根据配置信息自动执行该任务

5、新建Service接口和实现类

public interface ResumeService {
    void storeResume();
}

@Service("resumeService")
public class ResumeServiceImpl implements ResumeService {
    @Override
    public void storeResume() {
        System.out.println("任务已经执行.....................................");
    }
}

6、新建一个测试类来启动这个流程

@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(classes = SpringBootActivitiApplication.class)
public class ActivitiTest {

    @Autowired
    RuntimeService runtimeService;

    @Test
    public void TestStartProcess() {
        Map variables = new HashMap<>();
        variables.put("applicantName", "John Doe");
        variables.put("email", "[email protected]");
        variables.put("phoneNumber", "123456789");
        runtimeService.startProcessInstanceByKey("myProcess", variables);
    }
}

startProcessInstanceByKey（）为根据流程ID启动该流程的方法

7、执行完成