activiti学习之任务分配

r囧r小猫 2022-09-15 11:48 310阅读 0赞

## 写在前面 ##

实际场景中，在发起流程或者是提交自己的任务时，一般都会给出一组用户列表，供选择下一步骤的办理人，这个时候就需要进行任务的动态分配，本文我们来分析如何实现这个功能。

## 1：占位符方式 ##

在activiti中支持`${xxx}`占位符的方式来设置办理人，只需要在设计流程时将办理人按照占位符的方式来指定，在运行期，通过 [变量][Link 1]  
来动态设置。

### 1.1：流程图 ###

*  效果

![在这里插入图片描述][93ff8808e1e2441d953ed47a8bb3de73.png]

其中`指定用户`任务节点是设置的指定用户admin，`变量`任务节点设置的是占位符方式的任务执行人`${user}`。

*  xml

<?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="assignUser111" name="个人任务分配111" isExecutable="true">
            <startEvent id="startevent1" name="Start"></startEvent>
            <endEvent id="endevent1" name="End"></endEvent>
            <userTask id="usertask1" name="指定用户" activiti:assignee="admin">
                <extensionElements>
                    <modeler:initiator-can-complete xmlns:modeler="http://activiti.com/modeler">false</modeler:initiator-can-complete>
                </extensionElements>
            </userTask>
            <userTask id="usertask2" name="变量" activiti:assignee="${user}">
                <extensionElements>
                    <modeler:initiator-can-complete xmlns:modeler="http://activiti.com/modeler">false</modeler:initiator-can-complete>
                </extensionElements>
            </userTask>
            <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>
            <sequenceFlow id="flow2" sourceRef="usertask1" targetRef="usertask2"></sequenceFlow>
            <sequenceFlow id="flow3" sourceRef="usertask2" targetRef="endevent1"></sequenceFlow>
        </process>
        <bpmndi:BPMNDiagram id="BPMNDiagram_assignUser">
            <bpmndi:BPMNPlane bpmnElement="assignUser" id="BPMNPlane_assignUser">
                <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
                    <omgdc:Bounds height="41.0" width="35.0" x="236.0" y="20.0"></omgdc:Bounds>
                </bpmndi:BPMNShape>
                <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
                    <omgdc:Bounds height="35.0" width="35.0" x="236.0" y="390.0"></omgdc:Bounds>
                </bpmndi:BPMNShape>
                <bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">
                    <omgdc:Bounds height="55.0" width="105.0" x="201.0" y="130.0"></omgdc:Bounds>
                </bpmndi:BPMNShape>
                <bpmndi:BPMNShape bpmnElement="usertask2" id="BPMNShape_usertask2">
                    <omgdc:Bounds height="55.0" width="105.0" x="201.0" y="250.0"></omgdc:Bounds>
                </bpmndi:BPMNShape>
                <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
                    <omgdi:waypoint x="253.0" y="61.0"></omgdi:waypoint>
                    <omgdi:waypoint x="253.0" y="130.0"></omgdi:waypoint>
                </bpmndi:BPMNEdge>
                <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
                    <omgdi:waypoint x="253.0" y="185.0"></omgdi:waypoint>
                    <omgdi:waypoint x="253.0" y="250.0"></omgdi:waypoint>
                </bpmndi:BPMNEdge>
                <bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
                    <omgdi:waypoint x="253.0" y="305.0"></omgdi:waypoint>
                    <omgdi:waypoint x="253.0" y="390.0"></omgdi:waypoint>
                </bpmndi:BPMNEdge>
            </bpmndi:BPMNPlane>
        </bpmndi:BPMNDiagram>
    </definitions>

### 1.2：测试 ###

*  部署

![在这里插入图片描述][5620be961d394947a9864bd890d3a07b.png]

![在这里插入图片描述][1c88b5352851430b867b8b050ce0d794.png]

*  启动流程实例

/** * 启动流程实例 */
    @Test
    public void start() { 
        ProcessInstance pi = runtimeService.startProcessInstanceByKey("assignUser111"); // 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());
    }

![在这里插入图片描述][2a939038c5fd4da6ab323f40d8d1fc6c.png]

*  完成任务并指定`变量`任务节点办理人

/** * 完成任务2 */
    // 完成任务并制定下一个节点的办理人
    @Test
    public void completeTask2() { 
        Map<String, Object> variables = new HashMap<String, Object>();
        variables.put("user", "李二");
        // 完成任务，并指定下一个节点的处理人是李二（上一个办理人动态选择下一个节点办理人的场景）
        taskService.complete("772507", variables);
    }

![在这里插入图片描述][watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAd2FuZzA5MDc_size_20_color_FFFFFF_t_70_g_se_x_16]

## 2：setAssignee动态设置 ##

通过TaskService的setAssignee方法来动态设置办理人。

### 2.1：流程图 ###

*  效果

![在这里插入图片描述][75a8f0180e194019894a616ca585caf4.png]

其中`动态设置办理人`任务节点是设置的指定用户`this is not assignee`,需要替换为真实用户。

*  xml

<?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="csdnTaskServiceSetAssignee" name="csdnTaskServiceSetAssignee" isExecutable="true">
            <startEvent id="startevent1" name="Start"></startEvent>
            <userTask id="usertask1" name="动态设置办理人" activiti:assignee="this is not assignee">
                <extensionElements>
                    <modeler:initiator-can-complete xmlns:modeler="http://activiti.com/modeler">false</modeler:initiator-can-complete>
                </extensionElements>
            </userTask>
            <endEvent id="endevent1" name="End"></endEvent>
            <sequenceFlow id="flow3" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>
            <sequenceFlow id="flow4" sourceRef="usertask1" targetRef="endevent1"></sequenceFlow>
        </process>
        <bpmndi:BPMNDiagram id="BPMNDiagram_csdnTaskServiceSetAssignee">
            <bpmndi:BPMNPlane bpmnElement="csdnTaskServiceSetAssignee" id="BPMNPlane_csdnTaskServiceSetAssignee">
                <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
                    <omgdc:Bounds height="35.0" width="35.0" x="130.0" y="250.0"></omgdc:Bounds>
                </bpmndi:BPMNShape>
                <bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">
                    <omgdc:Bounds height="55.0" width="105.0" x="360.0" y="240.0"></omgdc:Bounds>
                </bpmndi:BPMNShape>
                <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
                    <omgdc:Bounds height="35.0" width="35.0" x="660.0" y="250.0"></omgdc:Bounds>
                </bpmndi:BPMNShape>
                <bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
                    <omgdi:waypoint x="165.0" y="267.0"></omgdi:waypoint>
                    <omgdi:waypoint x="360.0" y="267.0"></omgdi:waypoint>
                </bpmndi:BPMNEdge>
                <bpmndi:BPMNEdge bpmnElement="flow4" id="BPMNEdge_flow4">
                    <omgdi:waypoint x="465.0" y="267.0"></omgdi:waypoint>
                    <omgdi:waypoint x="660.0" y="267.0"></omgdi:waypoint>
                </bpmndi:BPMNEdge>
            </bpmndi:BPMNPlane>
        </bpmndi:BPMNDiagram>
    </definitions>

### 2.2：测试 ###

*  部署

/** * 部署流程定义 */
    @Test
    public void deploy() { 
        /*Deployment deployment = repositoryService.createDeployment() // 创建部署 .addClasspathResource("com/jh/activiti/assignUser.bpmn20.xml") // 加载流程资源文件 .name("AssignUserProcessTest_3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());*/
        /*Deployment deployment = repositoryService.createDeployment() // 创建部署 .addClasspathResource("com/jh/activiti/assignUser1.bpmn20.xml") // 加载流程资源文件 .name("csdn测试动态指定任务办理人111") // 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());*/
        Deployment deployment = repositoryService.createDeployment() // 创建部署
                .addClasspathResource("com/jh/activiti/TaskService_setAssign.bpmn20.xml") // 加载流程资源文件
                .name("csdn通过TaskService的setAssignee方法设置办理人") // 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());
    }

![在这里插入图片描述][1b22a75e79764e55a53b5624c96cc818.png]

![在这里插入图片描述][e5b2059c8d8c419c83a191ba33d73c26.png]

*  启动流程实例

/** * 启动流程实例 */
    @Test
    public void start() { 
        ProcessInstance pi = runtimeService.startProcessInstanceByKey("csdnTaskServiceSetAssignee"); // 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());
    }

![在这里插入图片描述][e6e609446d5a4e169c710e26709691da.png]

![在这里插入图片描述][35fdec1433c14a1eba037a6b46519cd1.png]

*  获取任务并设置办理人

/** * 查看任务 csdnTaskServiceSetAssignee */
    @Test
    public void queryTaskAndSetAssing() { 
        /*List<Task> taskList = taskService.createTaskQuery() // 创建任务查询 .taskAssignee("zhangsan") // 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()); }*/
        // 根据实例id获取任务
        Task task = taskService.createTaskQuery().processInstanceId("790002").singleResult();
        taskService.setAssignee(task.getId(), "蒙娜丽莎");
    }

执行后：

![在这里插入图片描述][543abc33f4024672b55fee70d35fb475.png]

## 参考文章 ##

[【弄nèng - Activiti6】Activiti6入门篇（四）—— 任务分配][n_ng - Activiti6_Activiti6_]

[Link 1]: https://blog.csdn.net/wang0907/article/details/120684570
[93ff8808e1e2441d953ed47a8bb3de73.png]: /images/20220828/d7cb48ee752e494d89bc7c2bf908b16b.png
[5620be961d394947a9864bd890d3a07b.png]: /images/20220828/edd5dffaab4e4cc29f87b3addeb89e89.png
[1c88b5352851430b867b8b050ce0d794.png]: /images/20220828/e763430e2fed47919cbcf5ebfe5e5003.png
[2a939038c5fd4da6ab323f40d8d1fc6c.png]: /images/20220828/191f7b3479314b6bb4d9bab57ab6b320.png
[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAd2FuZzA5MDc_size_20_color_FFFFFF_t_70_g_se_x_16]: /images/20220828/fbfca8a549b544309abea54676f8c0b3.png
[75a8f0180e194019894a616ca585caf4.png]: /images/20220828/0050003a68424975b83178d3d096b972.png
[1b22a75e79764e55a53b5624c96cc818.png]: /images/20220828/aa197ed82f904ffcb1e8d199593035ce.png
[e5b2059c8d8c419c83a191ba33d73c26.png]: /images/20220828/d79c9e64833841619b95f06c17b238eb.png
[e6e609446d5a4e169c710e26709691da.png]: /images/20220828/f9b2e11b687b4fe7a53fecb65028e57d.png
[35fdec1433c14a1eba037a6b46519cd1.png]: /images/20220828/3ec800730f814b5c8f44c29a85673546.png
[543abc33f4024672b55fee70d35fb475.png]: /images/20220828/aa47e58a2eeb4e0f802b136e732b08ce.png
[n_ng - Activiti6_Activiti6_]: https://blog.csdn.net/yy756127197/article/details/101381485