Activiti学习笔记10 — 动态任务分配
动态任务分配使用的两种方式
一、通过特殊表达式,来获取任务信息 ,在流程 UserTask节点上设置 ${流程变量的Key}
1、流程定义
1 <?xml version="1.0" encoding="UTF-8"?> 2 <definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/test"> 3 <process id="userDynamicTask1" name="动态任务处理1" isExecutable="true"> 4 <startEvent id="startevent1" name="Start"></startEvent> 5 <userTask id="休假" name="休假" activiti:assignee="${user}"></userTask> 6 <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="休假"></sequenceFlow> 7 <endEvent id="endevent1" name="End"></endEvent> 8 <sequenceFlow id="flow2" sourceRef="休假" targetRef="endevent1"></sequenceFlow> 9 </process> 10 <bpmndi:BPMNDiagram id="BPMNDiagram_userDynamicTask1"> 11 <bpmndi:BPMNPlane bpmnElement="userDynamicTask1" id="BPMNPlane_userDynamicTask1"> 12 <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1"> 13 <omgdc:Bounds height="35.0" width="35.0" x="340.0" y="110.0"></omgdc:Bounds> 14 </bpmndi:BPMNShape> 15 <bpmndi:BPMNShape bpmnElement="休假" id="BPMNShape_休假"> 16 <omgdc:Bounds height="55.0" width="105.0" x="305.0" y="180.0"></omgdc:Bounds> 17 </bpmndi:BPMNShape> 18 <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1"> 19 <omgdc:Bounds height="35.0" width="35.0" x="340.0" y="270.0"></omgdc:Bounds> 20 </bpmndi:BPMNShape> 21 <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1"> 22 <omgdi:waypoint x="357.0" y="145.0"></omgdi:waypoint> 23 <omgdi:waypoint x="357.0" y="180.0"></omgdi:waypoint> 24 </bpmndi:BPMNEdge> 25 <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2"> 26 <omgdi:waypoint x="357.0" y="235.0"></omgdi:waypoint> 27 <omgdi:waypoint x="357.0" y="270.0"></omgdi:waypoint> 28 </bpmndi:BPMNEdge> 29 </bpmndi:BPMNPlane> 30 </bpmndi:BPMNDiagram> 31 </definitions>
2、发布流程
1 /** 2 * 2、发布一个流程:发布通过特殊表达式,来获取任务信息 ${流程变量的Key}的流程 3 */ 4 @Test 5 public void testDeployProcess() { 6 RepositoryService repositoryService = processEngine.getRepositoryService(); 7 DeploymentBuilder builder = repositoryService.createDeployment(); 8 // 加载发布资源 9 builder.name("动态任务处理流程1-测试") // 设置流程显示别名 10 .addClasspathResource("leave3.bpmn") // 设置流程规则文件 11 .addClasspathResource("leave3.png"); // 设置流程规则的图片 12 // 发布流程 13 builder.deploy(); 14 }
3、启动与测试流程
1 2 /** 3 * 3、启动流程、执行任务,并查看状态 4 */ 5 @Test 6 public void testUserTask() { 7 // 获取RuntimeService服务对象的实例 8 RuntimeService runtimeService = processEngine.getRuntimeService(); 9 String processDefinitionKey = "userDynamicTask1"; 10 // 自动执行与Key相对应的流程的最高版本 11 Map<String, Object> variables = new HashMap<String, Object>(); 12 //variables.put("user", "张三"); 13 variables.put("user", "李四"); 14 15 ProcessInstance processInstance = runtimeService.startProcessInstanceByKey(processDefinitionKey,variables); 16 String processInstanceId = processInstance.getId(); 17 logger.info("processInstanceId:" + processInstance.getId()); 18 19 // 获取TaskService服务对象的实例 20 TaskService taskService = processEngine.getTaskService(); 21 //String assignee = "张三"; 22 String assignee = "李四"; 23 List<Task> tasks = taskService.createTaskQuery().taskAssignee(assignee).list(); 24 Assert.assertEquals(1, tasks.size()); 25 Task task = tasks.get(0); 26 logger.info("taskName:" + task.getName()); 27 logger.info("taskAssignee:" + task.getAssignee()); 28 Assert.assertEquals("休假",task.getName()); 29 30 //完成任务 31 taskService.complete(task.getId()); 32 33 //检查结束状态 34 ProcessInstance pInstance = runtimeService 35 .createProcessInstanceQuery() 36 .processInstanceId(processInstanceId) 37 .singleResult(); 38 Assert.assertNull(pInstance); 39 logger.info("动态任务处理流程1,使用${流程变量的Key}方式成功执行!"); 40 41 }
4、运行结果
[INFO][2015-12-02 11:44:05,129][com.mcs.activiti.test.TestUserTaskDynamic]processInstanceId:130001
[INFO][2015-12-02 11:44:05,159][com.mcs.activiti.test.TestUserTaskDynamic]taskName:休假
[INFO][2015-12-02 11:44:05,159][com.mcs.activiti.test.TestUserTaskDynamic]taskAssignee:李四
[INFO][2015-12-02 11:44:05,456][com.mcs.activiti.test.TestUserTaskDynamic]动态任务处理流程1,使用${流程变量的Key}方式成功执行!
二、使用任务分配处理器
1、自定义任务分配处理器步骤
1.1、 创建一个类来充分“任务分配处理器”,需要实现TaskListener
1.2、 在实现方式中添加响应的处理逻辑;
1.3、 在流程中,配置/使用任务处理器。
2、创建自定义任务分配处理器,实现TaskListener
1 package mcs.listener; 2 3 import org.activiti.engine.delegate.DelegateTask; 4 import org.activiti.engine.delegate.TaskListener; 5 6 public class ManagerTaskListenerHandler implements TaskListener { 7 8 private static final long serialVersionUID = 1L; 9 10 @Override 11 public void notify(DelegateTask delegateTask) { 12 String assignee = "王五"; 13 delegateTask.setAssignee(assignee); 14 15 //delegateTask.addCandidateUser("王小二"); 16 } 17 18 }
3、流程定义
1 <?xml version="1.0" encoding="UTF-8"?> 2 <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"> 3 <process id="userDynamicTask2" name="动态任务处理2" isExecutable="true"> 4 <startEvent id="startevent1" name="Start"></startEvent> 5 <endEvent id="endevent1" name="End"></endEvent> 6 <userTask id="休假" name="休假"> 7 <extensionElements> 8 <activiti:taskListener event="create" class="mcs.listener.ManagerTaskListenerHandler"></activiti:taskListener> 9 </extensionElements> 10 </userTask> 11 <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="休假"></sequenceFlow> 12 <sequenceFlow id="flow2" sourceRef="休假" targetRef="endevent1"></sequenceFlow> 13 </process> 14 <bpmndi:BPMNDiagram id="BPMNDiagram_userDynamicTask2"> 15 <bpmndi:BPMNPlane bpmnElement="userDynamicTask2" id="BPMNPlane_userDynamicTask2"> 16 <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1"> 17 <omgdc:Bounds height="35.0" width="35.0" x="340.0" y="110.0"></omgdc:Bounds> 18 </bpmndi:BPMNShape> 19 <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1"> 20 <omgdc:Bounds height="35.0" width="35.0" x="340.0" y="270.0"></omgdc:Bounds> 21 </bpmndi:BPMNShape> 22 <bpmndi:BPMNShape bpmnElement="休假" id="BPMNShape_休假"> 23 <omgdc:Bounds height="55.0" width="105.0" x="305.0" y="180.0"></omgdc:Bounds> 24 </bpmndi:BPMNShape> 25 <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1"> 26 <omgdi:waypoint x="357.0" y="145.0"></omgdi:waypoint> 27 <omgdi:waypoint x="357.0" y="180.0"></omgdi:waypoint> 28 </bpmndi:BPMNEdge> 29 <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2"> 30 <omgdi:waypoint x="357.0" y="235.0"></omgdi:waypoint> 31 <omgdi:waypoint x="357.0" y="270.0"></omgdi:waypoint> 32 </bpmndi:BPMNEdge> 33 </bpmndi:BPMNPlane> 34 </bpmndi:BPMNDiagram> 35 </definitions>
4、发布流程
1 /** 2 * 4、发布一个流程:发布通过自定义任务分配处理器的流程 3 * 自定义任务分配处理器步骤: 4 * 1、创建一个类来充分“任务分配处理器”,需要实现TaskListener 5 * 2、在实现方式中添加响应的处理逻辑; 6 * 3、在流程中,配置/使用任务处理器。 7 */ 8 @Test 9 public void testDeployProcess2() { 10 RepositoryService repositoryService = processEngine.getRepositoryService(); 11 DeploymentBuilder builder = repositoryService.createDeployment(); 12 // 加载发布资源 13 builder.name("动态任务处理流程2-测试") // 设置流程显示别名 14 .addClasspathResource("leave4.bpmn") // 设置流程规则文件 15 .addClasspathResource("leave4.png"); // 设置流程规则的图片 16 // 发布流程 17 builder.deploy(); 18 } 19
5、启动与测试流程
1 /** 2 * 5、启动流程、执行任务,并查看状态 3 */ 4 @Test 5 public void testUserTask2() { 6 // 获取RuntimeService服务对象的实例 7 RuntimeService runtimeService = processEngine.getRuntimeService(); 8 String processDefinitionKey = "userDynamicTask2"; 9 // 自动执行与Key相对应的流程的最高版本 10 ProcessInstance processInstance = runtimeService.startProcessInstanceByKey(processDefinitionKey); 11 String processInstanceId = processInstance.getId(); 12 logger.info("processInstanceId:" + processInstance.getId()); 13 14 // 获取TaskService服务对象的实例 15 TaskService taskService = processEngine.getTaskService(); 16 String assignee = "王五"; 17 List<Task> tasks = taskService.createTaskQuery().taskAssignee(assignee).list(); 18 Assert.assertEquals(1, tasks.size()); 19 Task task = tasks.get(0); 20 logger.info("taskName:" + task.getName()); 21 logger.info("taskAssignee:" + task.getAssignee()); 22 Assert.assertEquals("休假",task.getName()); 23 24 //完成任务 25 taskService.complete(task.getId()); 26 27 //检查结束状态 28 ProcessInstance pInstance = runtimeService 29 .createProcessInstanceQuery() 30 .processInstanceId(processInstanceId) 31 .singleResult(); 32 Assert.assertNull(pInstance); 33 logger.info("动态任务处理流程2,使用自定义任务分配处理器方式成功执行!"); 34 35 }
6、运行结果
[INFO][2015-12-02 11:46:51,818][com.mcs.activiti.test.TestUserTaskDynamic]processInstanceId:132501
[INFO][2015-12-02 11:46:51,879][com.mcs.activiti.test.TestUserTaskDynamic]taskName:休假
[INFO][2015-12-02 11:46:51,879][com.mcs.activiti.test.TestUserTaskDynamic]taskAssignee:王五
[INFO][2015-12-02 11:46:52,192][com.mcs.activiti.test.TestUserTaskDynamic]动态任务处理流程2,使用自定义任务分配处理器方式成功执行!