Activiti中服务任务一般用于不需要人为干预，自动执行一些逻辑，自动结束的场景。
*后台服务基于Springboot2 + Activiti6，整合文章请参考：blog.csdn.net/yy756127197… 不需要流程设计器就排除3,4步骤 *
1. 服务任务
1.1 流程设计
连线设置
流程图
流程文件bpmn
<?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/processdef">
<process id="serviceTask" name="服务任务测试" isExecutable="true">
<startEvent id="startEvent1"></startEvent>
<serviceTask id="task1" name="服务任务节点" activiti:class="com.it.cloud.activiti.task.delegate.Mydelegate"></serviceTask>
<endEvent id="sid-493A4035-6A03-427E-B1A6-51E1AB1AEE20"></endEvent>
<sequenceFlow id="sid-AB72BCEE-4568-4240-A4A8-23A79506CAC1" sourceRef="startEvent1" targetRef="task1"></sequenceFlow>
<sequenceFlow id="sid-631A7EB8-389C-4662-B0D0-D1E8D05676E5" sourceRef="task1" targetRef="sid-493A4035-6A03-427E-B1A6-51E1AB1AEE20"></sequenceFlow>
</process>
<bpmndi:BPMNDiagram id="BPMNDiagram_serviceTask">
<bpmndi:BPMNPlane bpmnElement="serviceTask" id="BPMNPlane_serviceTask">
<bpmndi:BPMNShape bpmnElement="startEvent1" id="BPMNShape_startEvent1">
<omgdc:Bounds height="30.0" width="30.0" x="210.0" y="195.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="task1" id="BPMNShape_task1">
<omgdc:Bounds height="80.0" width="100.0" x="390.0" y="170.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="sid-493A4035-6A03-427E-B1A6-51E1AB1AEE20" id="BPMNShape_sid-493A4035-6A03-427E-B1A6-51E1AB1AEE20">
<omgdc:Bounds height="28.0" width="28.0" x="630.0" y="196.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge bpmnElement="sid-631A7EB8-389C-4662-B0D0-D1E8D05676E5" id="BPMNEdge_sid-631A7EB8-389C-4662-B0D0-D1E8D05676E5">
<omgdi:waypoint x="490.0" y="210.0"></omgdi:waypoint>
<omgdi:waypoint x="630.0" y="210.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="sid-AB72BCEE-4568-4240-A4A8-23A79506CAC1" id="BPMNEdge_sid-AB72BCEE-4568-4240-A4A8-23A79506CAC1">
<omgdi:waypoint x="240.0" y="210.0"></omgdi:waypoint>
<omgdi:waypoint x="390.0" y="210.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
</bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</definitions>
1.2 定义DeleGate类
配置在流程文件中
Mydelegate.java
import org.activiti.engine.delegate.DelegateExecution;
import org.activiti.engine.delegate.JavaDelegate;
import java.io.Serializable;
/**
* @author 司马缸砸缸了
* @description
* @date 2019/9/28 16:34
*/
public class Mydelegate implements JavaDelegate, Serializable {
@Override
public void execute(DelegateExecution execution) {
System.out.println("自定义java类");
System.out.println("ProcessInstanceId: " + execution.getProcessInstanceId());
System.out.println("EventName: " + execution.getEventName());
System.out.println("ProcessInstanceBusinessKey: " + execution.getProcessInstanceBusinessKey());
System.out.println("ProcessDefinitionId: " + execution.getProcessDefinitionId());
System.out.println("VariableNames: " + execution.getVariableNames());
}
}
1.3 测试类
ServiceTaskTest.java
import com.it.cloud.modules.activiti.service.IActReModelService;
import org.activiti.engine.HistoryService;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.RuntimeService;
import org.activiti.engine.TaskService;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* 服务任务测试
*/
@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.DEFINED_PORT)
public class ServiceTaskTest {
@Autowired
private IActReModelService actReModelService;
@Autowired
private RuntimeService runtimeService;
@Autowired
private RepositoryService repositoryService;
@Autowired
private TaskService taskService;
@Autowired
private HistoryService historyService;
/**
* 部署流程定义
*/
@Test
public void deploy() {
Deployment deployment = repositoryService.createDeployment() // 创建部署
.addClasspathResource("diagrams/serviceTask.bpmn20.xml") // 加载流程资源文件
.name("serviceTask流程") // 流程名称
.deploy(); // 部署
System.out.println("流程部署ID:" + deployment.getId());
System.out.println("流程部署Name:" + deployment.getName());
}
/**
* 启动流程实例
*/
@Test
public void start() {
ProcessInstance pi = runtimeService.startProcessInstanceByKey("serviceTask"); // 流程定义表的KEY字段值
System.out.println("流程实例ID:" + pi.getId());
System.out.println("流程定义ID:" + pi.getProcessDefinitionId());
}
/**
* 查看任务
*/
@Test
public void queryTask() {
List<Task> taskList = taskService.createTaskQuery() // 创建任务查询
.taskAssignee("admin") // 指定某个人
.list();
for (Task task : taskList) {
System.out.println("任务ID:" + task.getId());
System.out.println("任务名称:" + task.getName());
System.out.println("任务创建时间:" + task.getCreateTime());
System.out.println("任务委派人:" + task.getAssignee());
System.out.println("流程实例ID:" + task.getProcessInstanceId());
}
}
/**
* 完成任务
*/
@Test
public void completeTask() {
taskService.complete("85005");
}
/**
* 完成任务2
*/
@Test
public void completeTask2() {
Map<String, Object> variables = new HashMap<String, Object>();
variables.put("days", 7);
taskService.complete("165005", variables);
}
}
1.4 运行
运行deploy()
1.4.1 启动任务
运行start()，流程运行完服务任务，直接结束
效果：
