Activiti流程参数实战

系统管理员 2021-07-25 02:13 424阅读 0赞

**一 代码与数据库变化**

/**
    * Copyright (C), 2020-2020, 软件公司
    * FileName: SetVariableLocal.java
    * Author:   cakin
    * Date:     2020/4/21
    * Description: 流程参数作用域
    */
    package com.syc.activiti;
    
    
    import java.util.List;
    
    
    import org.activiti.engine.ProcessEngine;
    import org.activiti.engine.ProcessEngines;
    import org.activiti.engine.RepositoryService;
    import org.activiti.engine.RuntimeService;
    import org.activiti.engine.TaskService;
    import org.activiti.engine.runtime.Execution;
    import org.activiti.engine.runtime.ProcessInstance;
    import org.activiti.engine.task.Task;
    
    
    /**
    * @className: SetVariableLocal
    * @description: 流程参数作用域
    * @date: 2020/4/21
    * @author: cakin
    */
    public class SetVariableLocal {
        public static void main( String[] args ) {
            // 创建流程引擎
            ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
            // 得到流程存储服务实例
            RepositoryService repositoryService = engine.getRepositoryService();
            // 得到运行时服务组件
            RuntimeService runtimeService = engine.getRuntimeService();
            // 得到任务
            TaskService taskService = engine.getTaskService();
            // 部署流程描述文件
            repositoryService.createDeployment()
                    .addClasspathResource("bpmn/localVariable.bpmn20.xml").deploy();
            //启动流程
            ProcessInstance pi = runtimeService.startProcessInstanceByKey("vacationRequest");
            //查询全部的任务，得到相应的执行流，设置不同的参数
            List<Task> tasks = taskService.createTaskQuery().processInstanceId(pi.getId()).list();
    /************************************************************************************** 当执行到这里
    mysql> select * from act_ru_execution;
    ERROR 1046 (3D000): No database selected
    mysql> use act;
    Database changed
    mysql> select ID_, REV_,PROC_INST_ID_ ,BUSINESS_KEY_ ,PARENT_ID_ ,PROC_DEF_ID_ ,SUPER_EXEC_,ROOT_PROC_INST_ID_ ,ACT_ID_ from act_ru_execution;
    +--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
    | ID_    | REV_ | PROC_INST_ID_ | BUSINESS_KEY_ | PARENT_ID_ | PROC_DEF_ID_             | SUPER_EXEC_ | ROOT_PROC_INST_ID_ | ACT_ID_   |
    +--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
    | 182505 |    1 | 182505        | NULL          | NULL       | vacationRequest:7:182504 | NULL        | 182505             | NULL      |
    | 182506 |    1 | 182505        | NULL          | 182505     | vacationRequest:7:182504 | NULL        | 182505             | usertask1 |
    | 182509 |    1 | 182505        | NULL          | 182505     | vacationRequest:7:182504 | NULL        | 182505             | usertask2 |
    +--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
    
    mysql> select ID_ ,REV_, EXECUTION_ID_, PROC_INST_ID_ , PROC_DEF_ID_, NAME_ , PARENT_TASK_ID_ , DESCRIPTION_ , TASK_DEF_KEY_ , OWNER_, ASSIGNEE_ , DELEGATION_ , PRIORITY_ ,CREATE_TIME_ from act_ru_task;
    +--------+------+---------------+---------------+--------------------------+---------------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
    | ID_    | REV_ | EXECUTION_ID_ | PROC_INST_ID_ | PROC_DEF_ID_             | NAME_         | PARENT_TASK_ID_ | DESCRIPTION_ | TASK_DEF_KEY_ | OWNER_ | ASSIGNEE_ | DELEGATION_ | PRIORITY_ | CREATE_TIME_            |
    +--------+------+---------------+---------------+--------------------------+---------------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
    | 182511 |    1 | 182506        | 182505        | vacationRequest:7:182504 | Manager Audit | NULL            | NULL         | usertask1     | NULL   | NULL      | NULL        |        50 | 2020-04-21 21:00:07.638 |
    | 182513 |    1 | 182509        | 182505        | vacationRequest:7:182504 | HR Audit      | NULL            | NULL         | usertask2     | NULL   | NULL      | NULL        |        50 | 2020-04-21 21:00:07.703 |
    +--------+------+---------------+---------------+--------------------------+---------------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
    2 rows in set (0.00 sec)
    
    mysql> select * from act_ru_variable;
    Empty set (0.00 sec)
    ********************************************************************************/
    
            for (Task task : tasks) {
                Execution exe = runtimeService.createExecutionQuery()
                        .executionId(task.getExecutionId()).singleResult();
                if ("Manager Audit".equals(task.getName())) {
                    //经理审核节点，设置Local参数
                    runtimeService.setVariableLocal(exe.getId(), "managerVar", "manager var");
                } else {
                    //HR审核节点，设置全局参数
                    runtimeService.setVariable(exe.getId(), "hrVar", "hr var");
                }
            }
    /************************************************************************************** 当执行到这里
    mysql> select * from act_ru_execution;
    ERROR 1046 (3D000): No database selected
    mysql> use act;
    Database changed
    mysql> select ID_, REV_,PROC_INST_ID_ ,BUSINESS_KEY_ ,PARENT_ID_ ,PROC_DEF_ID_ ,SUPER_EXEC_,ROOT_PROC_INST_ID_ ,ACT_ID_ from act_ru_execution;
    +--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
    | ID_    | REV_ | PROC_INST_ID_ | BUSINESS_KEY_ | PARENT_ID_ | PROC_DEF_ID_             | SUPER_EXEC_ | ROOT_PROC_INST_ID_ | ACT_ID_   |
    +--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
    | 182505 |    1 | 182505        | NULL          | NULL       | vacationRequest:7:182504 | NULL        | 182505             | NULL      |
    | 182506 |    1 | 182505        | NULL          | 182505     | vacationRequest:7:182504 | NULL        | 182505             | usertask1 |
    | 182509 |    1 | 182505        | NULL          | 182505     | vacationRequest:7:182504 | NULL        | 182505             | usertask2 |
    +--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
    
    mysql> select ID_ ,REV_, EXECUTION_ID_, PROC_INST_ID_ , PROC_DEF_ID_, NAME_ , PARENT_TASK_ID_ , DESCRIPTION_ , TASK_DEF_KEY_ , OWNER_, ASSIGNEE_ , DELEGATION_ , PRIORITY_ ,CREATE_TIME_ from act_ru_task;
    +--------+------+---------------+---------------+--------------------------+---------------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
    | ID_    | REV_ | EXECUTION_ID_ | PROC_INST_ID_ | PROC_DEF_ID_             | NAME_         | PARENT_TASK_ID_ | DESCRIPTION_ | TASK_DEF_KEY_ | OWNER_ | ASSIGNEE_ | DELEGATION_ | PRIORITY_ | CREATE_TIME_            |
    +--------+------+---------------+---------------+--------------------------+---------------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
    | 182511 |    1 | 182506        | 182505        | vacationRequest:7:182504 | Manager Audit | NULL            | NULL         | usertask1     | NULL   | NULL      | NULL        |        50 | 2020-04-21 21:00:07.638 |
    | 182513 |    1 | 182509        | 182505        | vacationRequest:7:182504 | HR Audit      | NULL            | NULL         | usertask2     | NULL   | NULL      | NULL        |        50 | 2020-04-21 21:00:07.703 |
    +--------+------+---------------+---------------+--------------------------+---------------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
    2 rows in set (0.00 sec)
    
    mysql> select * from act_ru_variable;
    Empty set (0.00 sec)
    ********************************************************************************/
            //两个执行流时输出参数
            for (Task task : tasks) {
                Execution exe = runtimeService.createExecutionQuery()
                        .executionId(task.getExecutionId()).singleResult();
                if ("Manager Audit".equals(task.getName())) {
                    System.out.println("使用getVariableLocal方法获取经理参数："
                            + runtimeService.getVariableLocal(exe.getId(), "managerVar"));
                    System.out.println("使用getVariable方法获取经理参数："
                            + runtimeService.getVariableLocal(exe.getId(), "managerVar"));
                } else {
                    System.out.println("使用getVariableLocal方法获取HR参数："
                            + runtimeService.getVariableLocal(exe.getId(), "hrVar"));
                    System.out.println("使用getVariable方法获取HR参数："
                            + runtimeService.getVariable(exe.getId(), "hrVar"));
                }
            }
            //完成任务
            for (Task task : tasks) {
                taskService.complete(task.getId());
            }
            System.out.println("========  完成流程分支后     ========");
    
    /************************************************************************************** 当执行到这里
    mysql> select ID_, REV_,PROC_INST_ID_ ,BUSINESS_KEY_ ,PARENT_ID_ ,PROC_DEF_ID_ ,SUPER_EXEC_,ROOT_PROC_INST_ID_ ,ACT_ID_ from act_ru_execution;
    +--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
    | ID_    | REV_ | PROC_INST_ID_ | BUSINESS_KEY_ | PARENT_ID_ | PROC_DEF_ID_             | SUPER_EXEC_ | ROOT_PROC_INST_ID_ | ACT_ID_   |
    +--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
    | 182505 |    3 | 182505        | NULL          | NULL       | vacationRequest:7:182504 | NULL        | 182505             | NULL      |
    | 182509 |    3 | 182505        | NULL          | 182505     | vacationRequest:7:182504 | NULL        | 182505             | usertask3 |
    +--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
    2 rows in set (0.00 sec)
    
    mysql> select ID_ ,REV_, EXECUTION_ID_, PROC_INST_ID_ , PROC_DEF_ID_, NAME_ , PARENT_TASK_ID_ , DESCRIPTION_ , TASK_DEF_KEY_ , OWNER_, ASSIGNEE_ , DELEGATION_ , PRIORITY_ ,CREATE_TIME_ from act_ru_task;
    +--------+------+---------------+---------------+--------------------------+----------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
    | ID_    | REV_ | EXECUTION_ID_ | PROC_INST_ID_ | PROC_DEF_ID_             | NAME_    | PARENT_TASK_ID_ | DESCRIPTION_ | TASK_DEF_KEY_ | OWNER_ | ASSIGNEE_ | DELEGATION_ | PRIORITY_ | CREATE_TIME_            |
    +--------+------+---------------+---------------+--------------------------+----------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
    | 182519 |    1 | 182509        | 182505        | vacationRequest:7:182504 | End Task | NULL            | NULL         | usertask3     | NULL   | NULL      | NULL        |        50 | 2020-04-21 21:15:49.497 |
    +--------+------+---------------+---------------+--------------------------+----------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
    1 row in set (0.00 sec)
    
    mysql> select * from act_ru_variable;
    +--------+------+--------+-------+---------------+---------------+----------+---------------+---------+-------+--------+--------+
    | ID_    | REV_ | TYPE_  | NAME_ | EXECUTION_ID_ | PROC_INST_ID_ | TASK_ID_ | BYTEARRAY_ID_ | DOUBLE_ | LONG_ | TEXT_  | TEXT2_ |
    +--------+------+--------+-------+---------------+---------------+----------+---------------+---------+-------+--------+--------+
    | 182515 |    1 | string | hrVar | 182505        | 182505        | NULL     | NULL          |    NULL |  NULL | hr var | NULL   |
    +--------+------+--------+-------+---------------+---------------+----------+---------------+---------+-------+--------+--------+
    1 row in set (0.00 sec)
    ********************************************************************************/
    
            //重新查找流程任务
            tasks = taskService.createTaskQuery().processInstanceId(pi.getId()).list();
            for (Task task : tasks) {
                System.out.println("当前流程节点：" + task.getName());
                Execution exe = runtimeService.createExecutionQuery()
                        .executionId(task.getExecutionId()).singleResult();
                System.out.println("经理参数：" + runtimeService.getVariable(exe.getId(), "managerVar"));
                System.out.println("HR参数：" + runtimeService.getVariable(exe.getId(), "hrVar"));
            }
        }
    
    /************************************************************************************** 当执行到这里
    mysql> select ID_, REV_,PROC_INST_ID_ ,BUSINESS_KEY_ ,PARENT_ID_ ,PROC_DEF_ID_ ,SUPER_EXEC_,ROOT_PROC_INST_ID_ ,ACT_ID_ from act_ru_execution;
    +--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
    | ID_    | REV_ | PROC_INST_ID_ | BUSINESS_KEY_ | PARENT_ID_ | PROC_DEF_ID_             | SUPER_EXEC_ | ROOT_PROC_INST_ID_ | ACT_ID_   |
    +--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
    | 182505 |    3 | 182505        | NULL          | NULL       | vacationRequest:7:182504 | NULL        | 182505             | NULL      |
    | 182509 |    3 | 182505        | NULL          | 182505     | vacationRequest:7:182504 | NULL        | 182505             | usertask3 |
    +--------+------+---------------+---------------+------------+--------------------------+-------------+--------------------+-----------+
    2 rows in set (0.00 sec)
    
    mysql> select ID_ ,REV_, EXECUTION_ID_, PROC_INST_ID_ , PROC_DEF_ID_, NAME_ , PARENT_TASK_ID_ , DESCRIPTION_ , TASK_DEF_KEY_ , OWNER_, ASSIGNEE_ , DELEGATION_ , PRIORITY_ ,CREATE_TIME_ from act_ru_task;
    +--------+------+---------------+---------------+--------------------------+----------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
    | ID_    | REV_ | EXECUTION_ID_ | PROC_INST_ID_ | PROC_DEF_ID_             | NAME_    | PARENT_TASK_ID_ | DESCRIPTION_ | TASK_DEF_KEY_ | OWNER_ | ASSIGNEE_ | DELEGATION_ | PRIORITY_ | CREATE_TIME_            |
    +--------+------+---------------+---------------+--------------------------+----------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
    | 182519 |    1 | 182509        | 182505        | vacationRequest:7:182504 | End Task | NULL            | NULL         | usertask3     | NULL   | NULL      | NULL        |        50 | 2020-04-21 21:15:49.497 |
    +--------+------+---------------+---------------+--------------------------+----------+-----------------+--------------+---------------+--------+-----------+-------------+-----------+-------------------------+
    1 row in set (0.00 sec)
    
    mysql> select * from act_ru_variable;
    +--------+------+--------+-------+---------------+---------------+----------+---------------+---------+-------+--------+--------+
    | ID_    | REV_ | TYPE_  | NAME_ | EXECUTION_ID_ | PROC_INST_ID_ | TASK_ID_ | BYTEARRAY_ID_ | DOUBLE_ | LONG_ | TEXT_  | TEXT2_ |
    +--------+------+--------+-------+---------------+---------------+----------+---------------+---------+-------+--------+--------+
    | 182515 |    1 | string | hrVar | 182505        | 182505        | NULL     | NULL          |    NULL |  NULL | hr var | NULL   |
    +--------+------+--------+-------+---------------+---------------+----------+---------------+---------+-------+--------+--------+
    1 row in set (0.00 sec)
    ********************************************************************************/
    }

**二 执行结果**

使用getVariableLocal方法获取经理参数：manager var
    使用getVariable方法获取经理参数：manager var
    使用getVariableLocal方法获取HR参数：null
    使用getVariable方法获取HR参数：hr var
    ========  完成流程分支后     ========
    当前流程节点：End Task
    经理参数：null
    HR参数：hr var