1. 工作流
简单地来讲，工作流就是在计算机的协助下实现流程的自动化控制。目前，笔者熟知的主流的框架有：Camunda 、Flowable 、Activiti 、jBPM、还有我们国产的盘古BPM。其中，Camunda 、Flowable 都有商业版（企业版）和非商业版（社区开源版）。
技术产品各有千秋，Flowable专注于流程引擎，Activiti现在专注于Cloud。笔者最推荐Camunda，盘古BPM还没用过看起来应该也挺好用的。
关于Camunda补充几篇文章
Camunda开源版与商业版的差异
idea开发工作流使用camunda-model进行activiti7的开发
基于camunda如何实现会签：camunda会签流程配置与原理解析
2. 流程设计器
笔者亲测，IntelliJ IDEA 2021.1 (Ultimate Edition) 不支持 actiBPM插件。
强烈推荐用 camunda-modeler ，或者用 bpmn-js
首先，下载Camunda
https://camunda.com/download/
解压以后，直接双击.exe文件运行
也可以在IDEA中把它作为外部工具用
笔者更习惯直接双击.exe打开
Activiti为Eclipse开发了一个BPM插件“Activiti Eclipse Designer”
https://www.activiti.org/userguide/index.html#activitiDesigner
为了使用Activiti Designer，笔者又下载了Eclipse IDE，专门为了Activiti开发
3. Activiti7 快速开始
工作流的作用是实现流程的自动化控制。使用Activiti这种工作流框架大致都分为以下几个步骤：
- 流程定义
部署流程定义
启动流程实例
查询代表任务
完成任务
结束流程
术语补充：
BPM ：业务流程管理
BPMN ：业务流程模型和符号
首先，来引入依赖
1 <dependency>
2 <groupId>org.activiti</groupId>
3 <artifactId>activiti-spring-boot-starter</artifactId>
4 <version>7.1.0.M6</version>
5 </dependency>
学习Activiti主要是学习这些Service的使用
3.1. 创建ProcessEngine
1 package com.cjs.example.activiti;
2
3 import org.activiti.engine.ProcessEngine;
4 import org.activiti.engine.ProcessEngineConfiguration;
5 import org.activiti.engine.ProcessEngines;
6 import org.junit.jupiter.api.Test;
7
8 /**
9 * @Author ChengJianSheng
10 * @Date 2021/7/6
11 */
12 public class ProcessEngineTests {
13
14 @Test
15 public void testProcessEngine1() {
16 ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
17 System.out.println(processEngine);
18 }
19
20 @Test
21 public void testProcessEngine2() {
22 ProcessEngineConfiguration processEngineConfiguration = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti.cfg.xml");
23 ProcessEngine processEngine = processEngineConfiguration.buildProcessEngine();
24 System.out.println(processEngine);
25 }
26
27 }
ProcessEngineConfiguration是用来创建ProcessEngine，默认情况下，会读取classpath下的activiti.cfg.xml文件，当然也可以不叫这个名字
这里，由于还没有与Spring Boot整合，也不是一个Web环境，所以，姑且先建一个这样的文件吧，真正开发的时候肯定不是这样做的
1 <?xml version="1.0" encoding="UTF-8"?>
2 <beans xmlns="http://www.springframework.org/schema/beans"
3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
5
6 <bean id="processEngineConfiguration" name="processEngineConfiguration" class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">
7 <property name="jdbcDriver" value="com.mysql.jdbc.Driver"/>
8 <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/activiti?useUnicode=true&characterEncoding=utf8"/>
9 <property name="jdbcUsername" value="root"/>
10 <property name="jdbcPassword" value="123456"/>
11 <property name="databaseSchemaUpdate" value="true"/>
12 </bean>
13 </beans>
只要ProcessEngine被成功创建，就会生成25张表
这里我们可以看出，Activiti最本质最核心的东西就是将流程定义转换成表记录，表面上看好像是一个图片，其实它是一个xml文件，通过解析xml文件，进而将其转成表数据，后续从表中读数据就可以了。
3.2. 流程定义
用 Camunda Modeler 或者 Activiti Eclipse Designer 画好流程图
1 <?xml version="1.0" encoding="UTF-8"?>
2 <definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4 xmlns:xsd="http://www.w3.org/2001/XMLSchema"
5 xmlns:activiti="http://activiti.org/bpmn"
6 xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI"
7 xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC"
8 xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI"
9 typeLanguage="http://www.w3.org/2001/XMLSchema"
10 expressionLanguage="http://www.w3.org/1999/XPath"
11 targetNamespace="http://www.activiti.org/test">
12
13 <process id="holiday" name="holiday" isExecutable="true">
14 <startEvent id="startevent1" name="Start"></startEvent>
15 <userTask id="usertask1" name="填写请假单" activiti:assignee="${assignee1}"></userTask>
16 <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>
17 <userTask id="usertask2" name="部门经理审批" activiti:assignee="${assignee2}"></userTask>
18 <sequenceFlow id="flow2" sourceRef="usertask1" targetRef="usertask2"></sequenceFlow>
19 <userTask id="usertask3" name="人事审批" activiti:candidateUsers="tom,jerry"></userTask>
20 <sequenceFlow id="flow3" sourceRef="usertask2" targetRef="usertask3"></sequenceFlow>
21 <endEvent id="endevent1" name="End"></endEvent>
22 <sequenceFlow id="flow4" sourceRef="usertask3" targetRef="endevent1"></sequenceFlow>
23 </process>
24
25 <bpmndi:BPMNDiagram id="BPMNDiagram_holiday">
26 <bpmndi:BPMNPlane bpmnElement="holiday" id="BPMNPlane_holiday">
27 <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
28 <omgdc:Bounds height="35.0" width="35.0" x="130.0" y="220.0"></omgdc:Bounds>
29 </bpmndi:BPMNShape>
30 <bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">
31 <omgdc:Bounds height="55.0" width="105.0" x="210.0" y="210.0"></omgdc:Bounds>
32 </bpmndi:BPMNShape>
33 <bpmndi:BPMNShape bpmnElement="usertask2" id="BPMNShape_usertask2">
34 <omgdc:Bounds height="55.0" width="105.0" x="360.0" y="210.0"></omgdc:Bounds>
35 </bpmndi:BPMNShape>
36 <bpmndi:BPMNShape bpmnElement="usertask3" id="BPMNShape_usertask3">
37 <omgdc:Bounds height="55.0" width="105.0" x="510.0" y="210.0"></omgdc:Bounds>
38 </bpmndi:BPMNShape>
39 <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
40 <omgdc:Bounds height="35.0" width="35.0" x="660.0" y="220.0"></omgdc:Bounds>
41 </bpmndi:BPMNShape>
42 <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
43 <omgdi:waypoint x="165.0" y="237.0"></omgdi:waypoint>
44 <omgdi:waypoint x="210.0" y="237.0"></omgdi:waypoint>
45 </bpmndi:BPMNEdge>
46 <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
47 <omgdi:waypoint x="315.0" y="237.0"></omgdi:waypoint>
48 <omgdi:waypoint x="360.0" y="237.0"></omgdi:waypoint>
49 </bpmndi:BPMNEdge>
50 <bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
51 <omgdi:waypoint x="465.0" y="237.0"></omgdi:waypoint>
52 <omgdi:waypoint x="510.0" y="237.0"></omgdi:waypoint>
53 </bpmndi:BPMNEdge>
54 <bpmndi:BPMNEdge bpmnElement="flow4" id="BPMNEdge_flow4">
55 <omgdi:waypoint x="615.0" y="237.0"></omgdi:waypoint>
56 <omgdi:waypoint x="660.0" y="237.0"></omgdi:waypoint>
57 </bpmndi:BPMNEdge>
58 </bpmndi:BPMNPlane>
59 </bpmndi:BPMNDiagram>
60
61 </definitions>
1 ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
2
3 RepositoryService repositoryService = processEngine.getRepositoryService();
4
5 Deployment deployment = repositoryService.createDeployment()
6 .addClasspathResource("diagram/holiday.bpmn")
7 .addClasspathResource("diagram/holiday.png")
8 .name("请假流程")
9 .key("holiday")
10 .deploy();
11
12
13 // Deployment deployment = repositoryService.createDeployment()
14 // .addZipInputStream()
15 // .name()
16 // .key()
17 // .deploy();
18
19 System.out.println(deployment.getId());
也可以把这两个文件放在一起打包程一个zip压缩包
可以看到，act_re_procdef表中关联了act_re_deployment的ID，act_ge_bytearray表中也关联了act_re_deployment的ID
processDefinitionId是holiday:1:4
deploymentId是1
1 RepositoryService repositoryService = processEngine.getRepositoryService();
2
3 // 查询流程部署
4 Deployment deployment = repositoryService.createDeploymentQuery().deploymentKey("holiday").singleResult();
5 // 查询流程定义
6 ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery().deploymentId(deployment.getId()).singleResult();
7 // 流程定义是否被挂起/暂停
8 boolean suspended = processDefinition.isSuspended();
9 // 删除部署
10 repositoryService.deleteDeployment(deployment.getId());
11 // 激活流程定义
12 repositoryService.activateProcessDefinitionById(processDefinition.getId());
13 // 挂起/暂停流程定义
14 repositoryService.suspendProcessDefinitionById(processDefinition.getId());
15 // 查看流程图图片
16 InputStream is = repositoryService.getResourceAsStream(deployment.getId(), processDefinition.getDiagramResourceName());
3.3. 流程实例
1 RuntimeService runtimeService = processEngine.getRuntimeService();
2
3 Map<String, Object> variables = new HashMap<>();
4 variables.put("assignee1", "zhangsan");
5 variables.put("assignee2", "lisi");
7
8 ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("holiday", variables);
9
10 System.out.println(processInstance.getProcessInstanceId());
11 System.out.println(processInstance.getProcessDefinitionId());
3.5. 任务
1 TaskService taskService = processEngine.getTaskService();
2 // 查询待办任务
3 List<Task> taskList = taskService.createTaskQuery().taskAssignee("zhangsan").list();
4
5 for (Task task : taskList) {
6 // 完成任务
7 taskService.complete(task.getId());
8 }
现在，已经完成了zhangsan和lisi的任务，流程已经走到人事审批了，看表
接下来，查询tom和jerry的任务时，就不能用taskAssignee("tom")这样了，因为人事审批这个节点设置的是两个候选者，他们都可以看到任务，但是最终只能由一个人去完成
首先，需要声明任务由谁负责，然后再完成，不然任务不会分配给任何人
1 TaskService taskService = processEngine.getTaskService();
2
3 // 查询待办任务
4 Task task = taskService.createTaskQuery()
5 .processDefinitionKey("holiday")
6 .taskCandidateUser("tom")
7 .singleResult();
8
9 // 声明任务的责任人是谁
10 taskService.claim(task.getId(), "tom");
11
12 // 完成任务
13 taskService.complete(task.getId());
在tom拾取了这个任务以后，当前任务就分配给了tom
假设，拾取任务以后不想办理了，可以选择将自己当前的任务指派给其他人办理，或者再还回去
当我们把任务指派给jack以后
1 /**
2 * 指派
3 */
4
5 // 指派的第一种方式
6 taskService.setAssignee(task.getId(), "jack");
7
8 // 指派的第二种方式
9 taskService.deleteCandidateUser(task.getId(), "tom");
10 taskService.addCandidateUser(task.getId(), "jack");
还可以将任务委派给他人做
委派：是将任务节点分给其他人处理，等其他人处理好之后，委派任务会自动回到委派人的任务中
1 // 将任务进行委派
2 taskService.delegateTask(task.getId(), "rose");
3 // 被委派人办理任务后，委派人标记任务已完成
4 taskService.resolveTask(task.getId());
将任务重新放回去
1 /**
2 * 将任务重新放回去
3 */
4 // 第一种写法
5 taskService.unclaim(task.getId());
6 // 第二种写法
7 taskService.setAssignee(task.getId(), null);
完整代码片段如下：
1 // 查询待办任务
2 Task task = taskService.createTaskQuery()
3 .processDefinitionKey("holiday")
4 // .taskCandidateUser("tom")
5 .taskAssignee("jack")
6 .singleResult();
7
8 // 拾取任务
9 taskService.claim(task.getId(), "tom");
10
11 // 指派
12 taskService.setAssignee(task.getId(), "jack");
13
14 taskService.deleteCandidateUser(task.getId(), "tom");
15 taskService.addCandidateUser(task.getId(), "jack");
16
17 // 重新放回去
18 taskService.setAssignee(task.getId(), null);
19 taskService.unclaim(task.getId());
20
21 // 完成任务
22 taskService.complete(task.getId());
人事审批后，整个流程就结束了
一个流程实例走完以后，后续只能通过历史记录去查询它了
1 HistoryService historyService = processEngine.getHistoryService();
2 // 历史查询
3 List<HistoricActivityInstance> list = historyService.createHistoricActivityInstanceQuery()
4 .processInstanceId("7501").orderByHistoricActivityInstanceStartTime().asc().list();
5 for (HistoricActivityInstance historicActivityInstance : list) {
6 System.out.println(historicActivityInstance.getActivityName() + ":" + historicActivityInstance.getAssignee());
7 }
3.6. 网关
前面的请假流程比较简单（PS：故意简单设置的），接下来再看一下稍微复杂一点的报销流程（PS：也是故意复杂设置的）
1 <?xml version="1.0" encoding="UTF-8"?>
2 <definitions
3 xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
4 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
5 xmlns:xsd="http://www.w3.org/2001/XMLSchema"
6 xmlns:activiti="http://activiti.org/bpmn"
7 xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI"
8 xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC"
9 xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI"
10 typeLanguage="http://www.w3.org/2001/XMLSchema"
11 expressionLanguage="http://www.w3.org/1999/XPath"
12 targetNamespace="http://www.activiti.org/test">
13
14 <process id="expense" name="expense" isExecutable="true">
15 <documentation>报销流程</documentation>
16 <startEvent id="startevent1" name="Start"></startEvent>
17 <userTask id="usertask1" name="填写报销单" activiti:assignee="${expense.username}"></userTask>
18 <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>
19 <userTask id="usertask2" name="部门经理审批" activiti:assignee="${deptManager}"></userTask>
20 <sequenceFlow id="flow2" sourceRef="usertask1" targetRef="usertask2"></sequenceFlow>
21 <exclusiveGateway id="exclusivegateway2" name="Exclusive Gateway"></exclusiveGateway>
22 <sequenceFlow id="flow3" sourceRef="usertask2" targetRef="exclusivegateway2"></sequenceFlow>
23 <userTask id="usertask3" name="人事审批" activiti:assignee="${cho}"></userTask>
24 <sequenceFlow id="flow6" sourceRef="exclusivegateway2" targetRef="usertask3">
25 <conditionExpression xsi:type="tFormalExpression"><![CDATA[${expense.amount <= 500}]]></conditionExpression>
26 </sequenceFlow>
27 <userTask id="usertask4" name="总经理审批" activiti:assignee="${ceo}"></userTask>
28 <sequenceFlow id="flow8" sourceRef="usertask4" targetRef="usertask3"></sequenceFlow>
29 <sequenceFlow id="flow10" sourceRef="exclusivegateway2" targetRef="usertask4">
30 <conditionExpression xsi:type="tFormalExpression"><![CDATA[${expense.amount > 500}]]></conditionExpression>
31 </sequenceFlow>
32 <userTask id="usertask5" name="打印申请单" activiti:assignee="zhangsan"></userTask>
33 <userTask id="usertask6" name="粘贴发票" activiti:assignee="lisi"></userTask>
34 <parallelGateway id="parallelgateway1" name="Parallel Gateway"></parallelGateway>
35 <sequenceFlow id="flow11" sourceRef="usertask3" targetRef="parallelgateway1"></sequenceFlow>
36 <sequenceFlow id="flow12" sourceRef="parallelgateway1" targetRef="usertask5"></sequenceFlow>
37 <sequenceFlow id="flow13" sourceRef="parallelgateway1" targetRef="usertask6"></sequenceFlow>
38 <parallelGateway id="parallelgateway2" name="Parallel Gateway"></parallelGateway>
39 <sequenceFlow id="flow15" sourceRef="usertask5" targetRef="parallelgateway2"></sequenceFlow>
40 <sequenceFlow id="flow16" sourceRef="usertask6" targetRef="parallelgateway2"></sequenceFlow>
41 <userTask id="usertask7" name="财务打款" activiti:assignee="${cfo}"></userTask>
42 <sequenceFlow id="flow17" sourceRef="parallelgateway2" targetRef="usertask7"></sequenceFlow>
43 <endEvent id="endevent1" name="End"></endEvent>
44 <sequenceFlow id="flow18" sourceRef="usertask7" targetRef="endevent1"></sequenceFlow>
45 </process>
46 <bpmndi:BPMNDiagram id="BPMNDiagram_expense">
47 <bpmndi:BPMNPlane bpmnElement="expense" id="BPMNPlane_expense">
48 <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
49 <omgdc:Bounds height="35.0" width="35.0" x="70.0" y="255.0"></omgdc:Bounds>
50 </bpmndi:BPMNShape>
51 <bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">
52 <omgdc:Bounds height="55.0" width="105.0" x="140.0" y="245.0"></omgdc:Bounds>
53 </bpmndi:BPMNShape>
54 <bpmndi:BPMNShape bpmnElement="usertask2" id="BPMNShape_usertask2">
55 <omgdc:Bounds height="55.0" width="105.0" x="280.0" y="245.0"></omgdc:Bounds>
56 </bpmndi:BPMNShape>
57 <bpmndi:BPMNShape bpmnElement="exclusivegateway2" id="BPMNShape_exclusivegateway2">
58 <omgdc:Bounds height="40.0" width="40.0" x="430.0" y="252.0"></omgdc:Bounds>
59 </bpmndi:BPMNShape>
60 <bpmndi:BPMNShape bpmnElement="usertask3" id="BPMNShape_usertask3">
61 <omgdc:Bounds height="55.0" width="105.0" x="520.0" y="245.0"></omgdc:Bounds>
62 </bpmndi:BPMNShape>
63 <bpmndi:BPMNShape bpmnElement="usertask4" id="BPMNShape_usertask4">
64 <omgdc:Bounds height="55.0" width="105.0" x="520.0" y="130.0"></omgdc:Bounds>
65 </bpmndi:BPMNShape>
66 <bpmndi:BPMNShape bpmnElement="usertask5" id="BPMNShape_usertask5">
67 <omgdc:Bounds height="55.0" width="105.0" x="750.0" y="159.0"></omgdc:Bounds>
68 </bpmndi:BPMNShape>
69 <bpmndi:BPMNShape bpmnElement="usertask6" id="BPMNShape_usertask6">
70 <omgdc:Bounds height="55.0" width="105.0" x="750.0" y="320.0"></omgdc:Bounds>
71 </bpmndi:BPMNShape>
72 <bpmndi:BPMNShape bpmnElement="parallelgateway1" id="BPMNShape_parallelgateway1">
73 <omgdc:Bounds height="40.0" width="40.0" x="680.0" y="252.0"></omgdc:Bounds>
74 </bpmndi:BPMNShape>
75 <bpmndi:BPMNShape bpmnElement="parallelgateway2" id="BPMNShape_parallelgateway2">
76 <omgdc:Bounds height="40.0" width="40.0" x="880.0" y="252.0"></omgdc:Bounds>
77 </bpmndi:BPMNShape>
78 <bpmndi:BPMNShape bpmnElement="usertask7" id="BPMNShape_usertask7">
79 <omgdc:Bounds height="55.0" width="105.0" x="961.0" y="245.0"></omgdc:Bounds>
80 </bpmndi:BPMNShape>
81 <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
82 <omgdc:Bounds height="35.0" width="35.0" x="1100.0" y="255.0"></omgdc:Bounds>
83 </bpmndi:BPMNShape>
84 <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
85 <omgdi:waypoint x="105.0" y="272.0"></omgdi:waypoint>
86 <omgdi:waypoint x="140.0" y="272.0"></omgdi:waypoint>
87 </bpmndi:BPMNEdge>
88 <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
89 <omgdi:waypoint x="245.0" y="272.0"></omgdi:waypoint>
90 <omgdi:waypoint x="280.0" y="272.0"></omgdi:waypoint>
91 </bpmndi:BPMNEdge>
92 <bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
93 <omgdi:waypoint x="385.0" y="272.0"></omgdi:waypoint>
94 <omgdi:waypoint x="430.0" y="272.0"></omgdi:waypoint>
95 </bpmndi:BPMNEdge>
96 <bpmndi:BPMNEdge bpmnElement="flow6" id="BPMNEdge_flow6">
97 <omgdi:waypoint x="470.0" y="272.0"></omgdi:waypoint>
98 <omgdi:waypoint x="520.0" y="272.0"></omgdi:waypoint>
99 </bpmndi:BPMNEdge>
100 <bpmndi:BPMNEdge bpmnElement="flow8" id="BPMNEdge_flow8">
101 <omgdi:waypoint x="572.0" y="185.0"></omgdi:waypoint>
102 <omgdi:waypoint x="572.0" y="245.0"></omgdi:waypoint>
103 </bpmndi:BPMNEdge>
104 <bpmndi:BPMNEdge bpmnElement="flow10" id="BPMNEdge_flow10">
105 <omgdi:waypoint x="450.0" y="252.0"></omgdi:waypoint>
106 <omgdi:waypoint x="450.0" y="157.0"></omgdi:waypoint>
107 <omgdi:waypoint x="520.0" y="157.0"></omgdi:waypoint>
108 </bpmndi:BPMNEdge>
109 <bpmndi:BPMNEdge bpmnElement="flow11" id="BPMNEdge_flow11">
110 <omgdi:waypoint x="625.0" y="272.0"></omgdi:waypoint>
111 <omgdi:waypoint x="680.0" y="272.0"></omgdi:waypoint>
112 </bpmndi:BPMNEdge>
113 <bpmndi:BPMNEdge bpmnElement="flow12" id="BPMNEdge_flow12">
114 <omgdi:waypoint x="700.0" y="252.0"></omgdi:waypoint>
115 <omgdi:waypoint x="700.0" y="186.0"></omgdi:waypoint>
116 <omgdi:waypoint x="750.0" y="186.0"></omgdi:waypoint>
117 </bpmndi:BPMNEdge>
118 <bpmndi:BPMNEdge bpmnElement="flow13" id="BPMNEdge_flow13">
119 <omgdi:waypoint x="700.0" y="292.0"></omgdi:waypoint>
120 <omgdi:waypoint x="700.0" y="347.0"></omgdi:waypoint>
121 <omgdi:waypoint x="750.0" y="347.0"></omgdi:waypoint>
122 </bpmndi:BPMNEdge>
123 <bpmndi:BPMNEdge bpmnElement="flow15" id="BPMNEdge_flow15">
124 <omgdi:waypoint x="855.0" y="186.0"></omgdi:waypoint>
125 <omgdi:waypoint x="900.0" y="186.0"></omgdi:waypoint>
126 <omgdi:waypoint x="900.0" y="252.0"></omgdi:waypoint>
127 </bpmndi:BPMNEdge>
128 <bpmndi:BPMNEdge bpmnElement="flow16" id="BPMNEdge_flow16">
129 <omgdi:waypoint x="855.0" y="347.0"></omgdi:waypoint>
130 <omgdi:waypoint x="900.0" y="347.0"></omgdi:waypoint>
131 <omgdi:waypoint x="900.0" y="292.0"></omgdi:waypoint>
132 </bpmndi:BPMNEdge>
133 <bpmndi:BPMNEdge bpmnElement="flow17" id="BPMNEdge_flow17">
134 <omgdi:waypoint x="920.0" y="272.0"></omgdi:waypoint>
135 <omgdi:waypoint x="961.0" y="272.0"></omgdi:waypoint>
136 </bpmndi:BPMNEdge>
137 <bpmndi:BPMNEdge bpmnElement="flow18" id="BPMNEdge_flow18">
138 <omgdi:waypoint x="1066.0" y="272.0"></omgdi:waypoint>
139 <omgdi:waypoint x="1100.0" y="272.0"></omgdi:waypoint>
140 </bpmndi:BPMNEdge>
141 </bpmndi:BPMNPlane>
142 </bpmndi:BPMNDiagram>
143 </definitions>
引入了排他网关（Exclusive Gateway）和并行网关（Parallel Gateway）
1 @Data
2 public class Expense implements Serializable {
3 // 申请人
4 private String username;
5 // 报销金额
6 private Integer amount;
7 }
启动流程实例
1 ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
2
3 RepositoryService repositoryService = processEngine.getRepositoryService();
4 RuntimeService runtimeService = processEngine.getRuntimeService();
5 TaskService taskService = processEngine.getTaskService();
6
7 // 部署流程定义
8 Deployment deployment = repositoryService.createDeployment()
9 .addClasspathResource("diagram/expense.bpmn")
10 .addClasspathResource("diagram/expense.png")
11 .name("报销流程")
12 .key("expense")
13 .deploy();
14
15 ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery()
16 .deploymentId(deployment.getId())
17 .singleResult();
18 System.out.println(processDefinition.getId());
19
20 Expense expense = new Expense();
21 expense.setUsername("chengcheng");
22 expense.setAmount(520);
23
24 Map<String, Object> variables = new HashMap<>();
25 variables.put("expense", expense);
26 variables.put("deptManager", "tom");
27 variables.put("ceo", "jerry");
28 variables.put("cho", "rose");
29 variables.put("cfo", "jack");
30
31 // 启动流程实例
32 ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("expense", variables);
33 System.out.println(processInstance.getId());
34
35 // 查询cheng的待办任务
36 Task task = taskService.createTaskQuery().processInstanceId(processInstance.getId()).taskAssignee("chengcheng").singleResult();
37 if (null != task) {
38 taskService.complete(task.getId());
39 }
40
41 // 完成tom的待办任务
42 task = taskService.createTaskQuery().processInstanceId(processInstance.getId()).singleResult();
43 String assignee = task.getAssignee();
44 Assertions.assertEquals("tom", assignee);
45 taskService.complete(task.getId());
46
47 // 判断当前任务走到总经理审批
48 task = taskService.createTaskQuery().processInstanceId(processInstance.getId()).singleResult();
49 assignee = task.getAssignee();
50 Assertions.assertEquals("jerry", assignee);
51 taskService.complete(task.getId());
52
53 // 完成rose的任务
54 task = taskService.createTaskQuery().processInstanceId(processInstance.getId()).taskAssignee("rose").singleResult();
55 if (null != task) {
56 taskService.complete(task.getId());
57 }
58
59 // 断言当前有2个激活的任务
60 List<Task> taskList = taskService.createTaskQuery().processInstanceId(processInstance.getId()).list();
61 taskList.forEach(x->{
62 System.out.println(x.getName() + " : " + x.getAssignee());
63 });
64 Assertions.assertEquals(2, taskList.size());
当我们完成了zhangsan和lisi的任务以后
接下来，演示包含网关（Inclusive Gateway）
1 <?xml version="1.0" encoding="UTF-8"?>
2 <definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4 xmlns:xsd="http://www.w3.org/2001/XMLSchema"
5 xmlns:activiti="http://activiti.org/bpmn"
6 xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI"
7 xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC"
8 xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI"
9 typeLanguage="http://www.w3.org/2001/XMLSchema"
10 expressionLanguage="http://www.w3.org/1999/XPath"
11 targetNamespace="http://www.activiti.org/test">
12
13 <process id="HealthExamination" name="HealthExamination" isExecutable="true">
14 <startEvent id="startevent1" name="Start"></startEvent>
15 <userTask id="usertask1" name="填写体检申请" activiti:assignee="${username}"></userTask>
16 <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>
17 <inclusiveGateway id="inclusivegateway1" name="Inclusive Gateway"></inclusiveGateway>
18 <userTask id="usertask2" name="常规体检" activiti:assignee="${username}"></userTask>
19 <userTask id="usertask3" name="癌症筛查" activiti:assignee="${username}"></userTask>
20 <userTask id="usertask4" name="乙肝检查" activiti:assignee="${username}"></userTask>
21 <sequenceFlow id="flow2" sourceRef="inclusivegateway1"
22 targetRef="usertask2">
23 <conditionExpression xsi:type="tFormalExpression"><![CDATA[${userType == 1 || userType ==2}]]></conditionExpression>
24 </sequenceFlow>
25 <sequenceFlow id="flow4" sourceRef="inclusivegateway1"
26 targetRef="usertask3">
27 <conditionExpression xsi:type="tFormalExpression"><![CDATA[${userType == 2}]]></conditionExpression>
28 </sequenceFlow>
29 <sequenceFlow id="flow5" sourceRef="inclusivegateway1"
30 targetRef="usertask4">
31 <conditionExpression xsi:type="tFormalExpression"><![CDATA[${userType == 1 || userType ==2}]]></conditionExpression>
32 </sequenceFlow>
33 <sequenceFlow id="flow6" sourceRef="usertask1" targetRef="inclusivegateway1"></sequenceFlow>
34 <inclusiveGateway id="inclusivegateway2" name="Inclusive Gateway"></inclusiveGateway>
35 <sequenceFlow id="flow8" sourceRef="usertask4" targetRef="inclusivegateway2"></sequenceFlow>
36 <sequenceFlow id="flow9" sourceRef="usertask2" targetRef="inclusivegateway2"></sequenceFlow>
37 <sequenceFlow id="flow10" sourceRef="usertask3" targetRef="inclusivegateway2"></sequenceFlow>
38 <userTask id="usertask5" name="吃早餐" activiti:assignee="${username}"></userTask>
39 <endEvent id="endevent1" name="End"></endEvent>
40 <sequenceFlow id="flow11" sourceRef="usertask5" targetRef="endevent1"></sequenceFlow>
41 <sequenceFlow id="flow12" sourceRef="inclusivegateway2" targetRef="usertask5"></sequenceFlow>
42 </process>
43
44 <bpmndi:BPMNDiagram id="BPMNDiagram_HealthExamination">
45 <bpmndi:BPMNPlane bpmnElement="HealthExamination" id="BPMNPlane_HealthExamination">
46 <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
47 <omgdc:Bounds height="35.0" width="35.0" x="100.0" y="254.0"></omgdc:Bounds>
48 </bpmndi:BPMNShape>
49 <bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">
50 <omgdc:Bounds height="55.0" width="105.0" x="180.0" y="244.0"></omgdc:Bounds>
51 </bpmndi:BPMNShape>
52 <bpmndi:BPMNShape bpmnElement="inclusivegateway1" id="BPMNShape_inclusivegateway1">
53 <omgdc:Bounds height="40.0" width="40.0" x="370.0" y="251.0"></omgdc:Bounds>
54 </bpmndi:BPMNShape>
55 <bpmndi:BPMNShape bpmnElement="usertask2" id="BPMNShape_usertask2">
56 <omgdc:Bounds height="55.0" width="105.0" x="490.0" y="150.0"></omgdc:Bounds>
57 </bpmndi:BPMNShape>
58 <bpmndi:BPMNShape bpmnElement="usertask3" id="BPMNShape_usertask3">
59 <omgdc:Bounds height="55.0" width="105.0" x="490.0" y="340.0"></omgdc:Bounds>
60 </bpmndi:BPMNShape>
61 <bpmndi:BPMNShape bpmnElement="usertask4" id="BPMNShape_usertask4">
62 <omgdc:Bounds height="55.0" width="105.0" x="490.0" y="244.0"></omgdc:Bounds>
63 </bpmndi:BPMNShape>
64 <bpmndi:BPMNShape bpmnElement="inclusivegateway2" id="BPMNShape_inclusivegateway2">
65 <omgdc:Bounds height="40.0" width="40.0" x="690.0" y="251.0"></omgdc:Bounds>
66 </bpmndi:BPMNShape>
67 <bpmndi:BPMNShape bpmnElement="usertask5" id="BPMNShape_usertask5">
68 <omgdc:Bounds height="55.0" width="105.0" x="800.0" y="244.0"></omgdc:Bounds>
69 </bpmndi:BPMNShape>
70 <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
71 <omgdc:Bounds height="35.0" width="35.0" x="950.0" y="254.0"></omgdc:Bounds>
72 </bpmndi:BPMNShape>
73 <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
74 <omgdi:waypoint x="135.0" y="271.0"></omgdi:waypoint>
75 <omgdi:waypoint x="180.0" y="271.0"></omgdi:waypoint>
76 </bpmndi:BPMNEdge>
77 <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
78 <omgdi:waypoint x="390.0" y="251.0"></omgdi:waypoint>
79 <omgdi:waypoint x="390.0" y="177.0"></omgdi:waypoint>
80 <omgdi:waypoint x="490.0" y="177.0"></omgdi:waypoint>
81 </bpmndi:BPMNEdge>
82 <bpmndi:BPMNEdge bpmnElement="flow4" id="BPMNEdge_flow4">
83 <omgdi:waypoint x="390.0" y="291.0"></omgdi:waypoint>
84 <omgdi:waypoint x="390.0" y="367.0"></omgdi:waypoint>
85 <omgdi:waypoint x="490.0" y="367.0"></omgdi:waypoint>
86 </bpmndi:BPMNEdge>
87 <bpmndi:BPMNEdge bpmnElement="flow5" id="BPMNEdge_flow5">
88 <omgdi:waypoint x="410.0" y="271.0"></omgdi:waypoint>
89 <omgdi:waypoint x="490.0" y="271.0"></omgdi:waypoint>
90 </bpmndi:BPMNEdge>
91 <bpmndi:BPMNEdge bpmnElement="flow6" id="BPMNEdge_flow6">
92 <omgdi:waypoint x="285.0" y="271.0"></omgdi:waypoint>
93 <omgdi:waypoint x="370.0" y="271.0"></omgdi:waypoint>
94 </bpmndi:BPMNEdge>
95 <bpmndi:BPMNEdge bpmnElement="flow8" id="BPMNEdge_flow8">
96 <omgdi:waypoint x="595.0" y="271.0"></omgdi:waypoint>
97 <omgdi:waypoint x="690.0" y="271.0"></omgdi:waypoint>
98 </bpmndi:BPMNEdge>
99 <bpmndi:BPMNEdge bpmnElement="flow9" id="BPMNEdge_flow9">
100 <omgdi:waypoint x="595.0" y="177.0"></omgdi:waypoint>
101 <omgdi:waypoint x="710.0" y="177.0"></omgdi:waypoint>
102 <omgdi:waypoint x="710.0" y="251.0"></omgdi:waypoint>
103 </bpmndi:BPMNEdge>
104 <bpmndi:BPMNEdge bpmnElement="flow10" id="BPMNEdge_flow10">
105 <omgdi:waypoint x="595.0" y="367.0"></omgdi:waypoint>
106 <omgdi:waypoint x="710.0" y="367.0"></omgdi:waypoint>
107 <omgdi:waypoint x="710.0" y="291.0"></omgdi:waypoint>
108 </bpmndi:BPMNEdge>
109 <bpmndi:BPMNEdge bpmnElement="flow11" id="BPMNEdge_flow11">
110 <omgdi:waypoint x="905.0" y="271.0"></omgdi:waypoint>
111 <omgdi:waypoint x="950.0" y="271.0"></omgdi:waypoint>
112 </bpmndi:BPMNEdge>
113 <bpmndi:BPMNEdge bpmnElement="flow12" id="BPMNEdge_flow12">
114 <omgdi:waypoint x="730.0" y="271.0"></omgdi:waypoint>
115 <omgdi:waypoint x="800.0" y="271.0"></omgdi:waypoint>
116 </bpmndi:BPMNEdge>
117 </bpmndi:BPMNPlane>
118 </bpmndi:BPMNDiagram>
119 </definitions>
用一个userType=1的用户测试一下
1 ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
2
3 RepositoryService repositoryService = processEngine.getRepositoryService();
4 RuntimeService runtimeService = processEngine.getRuntimeService();
5 TaskService taskService = processEngine.getTaskService();
6
7 Deployment deployment = repositoryService.createDeployment()
8 .addClasspathResource("diagram/HealthExamination.bpmn")
9 .addClasspathResource("diagram/HealthExamination.png")
10 .name("体检流程")
11 .key("HealthExamination")
12 .deploy();
13
14 ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery()
15 .deploymentId(deployment.getId())
16 .singleResult();
17 System.out.println(processDefinition.getId());
18
19
20 Map<String, Object> variables = new HashMap<>();
21 variables.put("username", "cheng");
22 variables.put("userType", 1);
23
24 // 启动流程实例
25 ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("HealthExamination", variables);
26 System.out.println(processInstance.getId());
27
28 // 查询cheng的待办任务
29 Task task = taskService.createTaskQuery().processInstanceId(processInstance.getId()).taskAssignee("cheng").singleResult();
30 if (null != task) {
31 taskService.complete(task.getId());
32 }
33
34 // 断言进入包含网关之后cheng有两个待办任务，因为他的userType=1
35 List<Task> taskList = taskService.createTaskQuery().processInstanceId(processInstance.getId()).list();
36 Assertions.assertEquals(2, taskList.size());
1 Map<String, Object> variables = new HashMap<>();
2 variables.put("username", "chengcheng");
3 variables.put("userType", 2);
4
5 ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("HealthExamination", variables);
6
7 Task task = taskService.createTaskQuery().processInstanceId(processInstance.getId()).taskAssignee("chengcheng").singleResult();
8 if (null != task) {
9 taskService.complete(task.getId());
10 }
11
12 List<Task> taskList = taskService.createTaskQuery().processInstanceId(processInstance.getId()).list();
13 Assertions.assertEquals(3, taskList.size());
相关文档
https://www.activiti.org/
https://camunda.com/bpmn/
https://bpmn.io/
http://www.pangubpm.com/
