Activiti 个人任务（三种指派方式）

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用户任务需要用户手动来完成的任务，可以直接分配给一个用户，也可以指定用户组，再由用户认领。本文我们来介绍一下如何将任务指派给个人，流程图如下：
这里写图片描述

方式一：

定义流程图时直接指定完成任务人（项目开发中任务的办理人不要放置XML文件中，不够灵活，较少使用）
这里写图片描述

流程图代码：

<?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/test">  <process id="personalAssignee1" name="PersonalAssignee1" isExecutable="true">    <startEvent id="startevent1" name="Start"></startEvent>    <userTask id="usertask1" name="审批" activiti:assignee="crystal"></userTask>    <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>    <endEvent id="endevent1" name="End"></endEvent>    <sequenceFlow id="flow2" sourceRef="usertask1" targetRef="endevent1"></sequenceFlow>  </process>  <bpmndi:BPMNDiagram id="BPMNDiagram_personalAssignee1">    <bpmndi:BPMNPlane bpmnElement="personalAssignee1" id="BPMNPlane_personalAssignee1">      <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">        <omgdc:Bounds height="35.0" width="35.0" x="360.0" y="20.0"></omgdc:Bounds>      </bpmndi:BPMNShape>      <bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">        <omgdc:Bounds height="55.0" width="105.0" x="325.0" y="100.0"></omgdc:Bounds>      </bpmndi:BPMNShape>      <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">        <omgdc:Bounds height="35.0" width="35.0" x="360.0" y="200.0"></omgdc:Bounds>      </bpmndi:BPMNShape>      <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">        <omgdi:waypoint x="377.0" y="55.0"></omgdi:waypoint>        <omgdi:waypoint x="377.0" y="100.0"></omgdi:waypoint>      </bpmndi:BPMNEdge>      <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">        <omgdi:waypoint x="377.0" y="155.0"></omgdi:waypoint>        <omgdi:waypoint x="377.0" y="200.0"></omgdi:waypoint>      </bpmndi:BPMNEdge>    </bpmndi:BPMNPlane>  </bpmndi:BPMNDiagram></definitions>

方式二：

定义流程图时配置任务节点变量，完成任务之前由流程变量指定任务办理人。在开发中，可以在页面中指定下一个任务的办理人，通过流程变量设置下一个任务的办理人。
这里写图片描述

流程图代码

<?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/test">  <process id="personalTask2" name="PersonalTask2" isExecutable="true">    <startEvent id="startevent1" name="Start"></startEvent>    <userTask id="usertask1" name="审批" activiti:assignee="#{userId}"></userTask>    <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>    <endEvent id="endevent1" name="End"></endEvent>    <sequenceFlow id="flow2" sourceRef="usertask1" targetRef="endevent1"></sequenceFlow>  </process>  <bpmndi:BPMNDiagram id="BPMNDiagram_personalTask2">    <bpmndi:BPMNPlane bpmnElement="personalTask2" id="BPMNPlane_personalTask2">      <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">        <omgdc:Bounds height="35.0" width="35.0" x="380.0" y="40.0"></omgdc:Bounds>      </bpmndi:BPMNShape>      <bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">        <omgdc:Bounds height="55.0" width="105.0" x="345.0" y="110.0"></omgdc:Bounds>      </bpmndi:BPMNShape>      <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">        <omgdc:Bounds height="35.0" width="35.0" x="380.0" y="210.0"></omgdc:Bounds>      </bpmndi:BPMNShape>      <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">        <omgdi:waypoint x="397.0" y="75.0"></omgdi:waypoint>        <omgdi:waypoint x="397.0" y="110.0"></omgdi:waypoint>      </bpmndi:BPMNEdge>      <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">        <omgdi:waypoint x="397.0" y="165.0"></omgdi:waypoint>        <omgdi:waypoint x="397.0" y="210.0"></omgdi:waypoint>      </bpmndi:BPMNEdge>    </bpmndi:BPMNPlane>  </bpmndi:BPMNDiagram></definitions>

方式三：

流程图中不指定任务办理人，添加监听类，需要实现TaskListener接口。
这里写图片描述

流程图代码：

<?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/test">  <process id="personalTask3" name="PersonalTask3" isExecutable="true">    <startEvent id="startevent1" name="Start"></startEvent>    <userTask id="usertask1" name="审批">      <extensionElements>        <activiti:taskListener event="create" class="com.activiti.test.TaskListenerImpl"></activiti:taskListener>      </extensionElements>    </userTask>    <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>    <endEvent id="endevent1" name="End"></endEvent>    <sequenceFlow id="flow2" sourceRef="usertask1" targetRef="endevent1"></sequenceFlow>  </process>  <bpmndi:BPMNDiagram id="BPMNDiagram_personalTask3">    <bpmndi:BPMNPlane bpmnElement="personalTask3" id="BPMNPlane_personalTask3">      <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">        <omgdc:Bounds height="35.0" width="35.0" x="310.0" y="20.0"></omgdc:Bounds>      </bpmndi:BPMNShape>      <bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">        <omgdc:Bounds height="55.0" width="105.0" x="275.0" y="100.0"></omgdc:Bounds>      </bpmndi:BPMNShape>      <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">        <omgdc:Bounds height="35.0" width="35.0" x="310.0" y="200.0"></omgdc:Bounds>      </bpmndi:BPMNShape>      <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">        <omgdi:waypoint x="327.0" y="55.0"></omgdi:waypoint>        <omgdi:waypoint x="327.0" y="100.0"></omgdi:waypoint>      </bpmndi:BPMNEdge>      <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">        <omgdi:waypoint x="327.0" y="155.0"></omgdi:waypoint>        <omgdi:waypoint x="327.0" y="200.0"></omgdi:waypoint>      </bpmndi:BPMNEdge>    </bpmndi:BPMNPlane>  </bpmndi:BPMNDiagram></definitions>

监听类 TaskListenerImpl.java

package com.activiti.test;import org.activiti.engine.delegate.DelegateTask;import org.activiti.engine.delegate.TaskListener;public class TaskListenerImpl implements TaskListener {    /**     * 指定个人任务和组任务的办理人     */    @Override    public void notify(DelegateTask delegateTask) {        delegateTask.setAssignee("crystal");// 指派个人任务    }}

测试类：

package com.activiti.test;import java.util.List;import org.activiti.engine.ProcessEngine;import org.activiti.engine.ProcessEngines;import org.activiti.engine.runtime.ProcessInstance;import org.activiti.engine.task.Task;import org.junit.Test;public class PersonalTask {    ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();    /**     * 部署流程定义，启动流程实例     */    @Test    public void deployAndStart() {        processEngine.getRepositoryService()            .createDeployment()            .name("指定个人任务")            .addClasspathResource("diagrams/personalTask3.bpmn")            .addClasspathResource("diagrams/personalTask3.png")            .deploy();        System.out.println("部署成功！");        // 方式一        /*ProcessInstance pi = processEngine.getRuntimeService()                .startProcessInstanceByKey("personalTask1");*/        // 方式二        /*Map<String, Object> variables = new HashMap<String, Object>();        variables.put("userId", "crystal");        ProcessInstance pi = processEngine.getRuntimeService()                .startProcessInstanceByKey("personalTask2", variables);*/        // 方式三        ProcessInstance pi = processEngine.getRuntimeService()                .startProcessInstanceByKey("personalTask3");        System.out.println("流程实例启动成功！实例ID：" + pi.getId());    }    /**     * 查询我的个人任务列表     */    @Test    public void findMyTaskList(){        String userId = "crystal";        List<Task> list = processEngine.getTaskService()                        .createTaskQuery()                        .taskAssignee(userId)//指定个人任务查询                        .list();        if (list != null && list.size()>0) {            for(Task task : list){                System.out.println("task id="+task.getId());                System.out.println("name="+task.getName());                System.out.println("assinee="+task.getAssignee());                System.out.println("executionId="+task.getExecutionId());                System.out.println("=====================================");            }        }    }    /**     * 完成我的个人任务     */    @Test    public void complete() {        String taskId = "167508";        processEngine.getTaskService().complete(taskId);        System.out.println("完成任务");    }    /**     * 可以分配个人任务从一个人到另一个人     */    @Test    public void setAssigneeTask(){        String taskId = "172508";//任务ID        String userId = "barry";//指定任务的办理者        processEngine.getTaskService().setAssignee(taskId, userId);        System.out.println("指派成功");    }}

总结：

个人任务及三种分配方式：
1：在taskProcess.bpmn中直接写 assignee=”crystal”
2：在taskProcess.bpmn中写 assignee=“#{userID}”，变量的值要是String的（使用流程变量指定办理人）。
3: 使用TaskListener接口，要使类实现该接口，在类中定义：
delegateTask.setAssignee(assignee);// 指定个人任务的办理人
使用任务ID和办理人重新指定办理人：
processEngine.getTaskService().setAssignee(taskId, userId);

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