SpringBoot 整合Activiti（一）

最近在学习Activiti工作流，学习过程整理下，方便以后回顾。

我这里用的Activiti版本是5.22，考虑后面应该会做在线绘制流程图，而6.0版本网上信息过少。。。（如下配置6.0也可试用）

开发工具使用Eclipse，Eclipse集成Activiti可参考：https://www.cnblogs.com/mingforyou/p/5347561.html

项目目录结构如下：



1、pom.xml配置SpringBoot和Activiti5.22

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion>
<groupId>workFlow</groupId>
<artifactId>workFlow</artifactId>
<version>0.0.1-SNAPSHOT</version>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
</properties>

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.8.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-spring-boot-starter-basic</artifactId>
<version>5.22.0</version>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>

<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional><!-- optional=true,依赖不会传递，该项目依赖devtools；之后依赖myboot项目的项目如果想要使用devtools，需要重新引入 -->
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

2、数据源配置（application.properties）：

spring.datasource.url=jdbc:mysql://127.0.0.1:3306/activiti?characterEncoding=utf8&useSSL=true
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.max-idle=10
spring.datasource.max-wait=10000
spring.datasource.min-idle=5
spring.datasource.initial-size=5

server.context-path=/workFlow
server.session.timeout=10

spring.http.encoding.force=true
spring.http.encoding.charset=UTF-8
spring.http.encoding.enabled=true
server.tomcat.uri-encoding=UTF-8
//端口号
server.port=8081

3、绘制流程图如下：


右键以xml编辑器方式打开流程图：



文件内容：

<?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: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="demo2" name="My process" isExecutable="true">
<startEvent id="startevent1" name="Start"></startEvent>
<userTask id="usertask1" name="请假"></userTask>
<userTask id="usertask2" name="审批"></userTask>
<endEvent id="endevent1" name="End"></endEvent>
<sequenceFlow id="flow1" sourceRef="usertask2" targetRef="endevent1"></sequenceFlow>
<sequenceFlow id="flow2" sourceRef="usertask1" targetRef="usertask2"></sequenceFlow>
<sequenceFlow id="flow3" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>
</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="180.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">
<omgdc:Bounds height="55.0" width="105.0" x="271.0" y="170.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="usertask2" id="BPMNShape_usertask2">
<omgdc:Bounds height="55.0" width="105.0" x="471.0" y="170.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
<omgdc:Bounds height="35.0" width="35.0" x="690.0" y="180.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
<omgdi:waypoint x="576.0" y="197.0"></omgdi:waypoint>
<omgdi:waypoint x="690.0" y="197.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
<omgdi:waypoint x="376.0" y="197.0"></omgdi:waypoint>
<omgdi:waypoint x="471.0" y="197.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
<omgdi:waypoint x="165.0" y="197.0"></omgdi:waypoint>
<omgdi:waypoint x="271.0" y="197.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
</bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</definitions>

新创建的流程一定记得修改流程图id如下图，如若流程图id存在重复，则启动报错：



4、java代码：

SpringBoot会把常用的服务自动配置注入，使用时直接装配使用即可：

@SpringBootApplication
public class App {

public static void main(String[] args) throws Exception {
SpringApplication.run(App.class, args);
}
}

@RestController
@RequestMapping("/demo")
public class DemoController {
@Autowired
private RepositoryService repositoryService;
@Autowired
private RuntimeService runtimeService;
@Autowired
private TaskService taskService;

@RequestMapping("/firstDemo")
public void firstDemo() {

//根据bpmn文件部署流程
Deployment deployment = repositoryService.createDeployment().addClasspathResource("demo2.bpmn").deploy();
//获取流程定义
ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery().deploymentId(deployment.getId()).singleResult();
//启动流程定义，返回流程实例
ProcessInstance pi = runtimeService.startProcessInstanceById(processDefinition.getId());
String processId = pi.getId();
System.out.println("流程创建成功，当前流程实例ID："+processId);

Task task=taskService.createTaskQuery().processInstanceId(processId).singleResult();
System.out.println("第一次执行前，任务名称："+task.getName());
taskService.complete(task.getId());

task = taskService.createTaskQuery().processInstanceId(processId).singleResult();
System.out.println("第二次执行前，任务名称："+task.getName());
taskService.complete(task.getId());

task = taskService.createTaskQuery().processInstanceId(processId).singleResult();
System.out.println("task为null，任务执行完毕："+task);
}

解决流程图汉字乱码问题：

/**
* 解决乱码问题
* @author Administrator
*
*/
@Component
public class ShareniuProcessEngineConfigurationConfigurer implements ProcessEngineConfigurationConfigurer  {
public void configure(SpringProcessEngineConfiguration processEngineConfiguration) {
processEngineConfiguration.setActivityFontName("宋体");
processEngineConfiguration.setLabelFontName("宋体");
processEngineConfiguration.setAnnotationFontName("宋体");
System.out.println("ShareniuProcessEngineConfigurationConfigurer#############");
System.out.println(processEngineConfiguration.getActivityFontName());
}
}

5、执行结果：
访问http://localhost:8081/workFlow/demo/firstDemo，控制台即可得到如下结果：



后面会继续更新Activiti相关内容。