flowable一个简单的例子

holiday-request.bpmn20.xml：

main：

package com.sky.flowable;

import org.activiti.engine.*;
import org.activiti.engine.history.HistoricActivityInstance;
import org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.repository.ProcessDefinition;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;

/**
 * @author sky
 * @version 1.0
 * @since 4.0
 */
public class main {
    public static void main(String[] args) {
        ProcessEngineConfiguration cfg = new StandaloneProcessEngineConfiguration()
                .setJdbcUrl("jdbc:h2:mem:flowable;DB_CLOSE_DELAY=-1")
                .setJdbcUsername("sa")
                .setJdbcPassword("")
                .setJdbcDriver("org.h2.Driver")
                .setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_TRUE);

        ProcessEngine processEngine = cfg.buildProcessEngine();

        /*创建了一个新的部署*/
        RepositoryService repositoryService = processEngine.getRepositoryService();
        Deployment deployment = repositoryService.createDeployment()
                .addClasspathResource("holiday-request.bpmn20.xml")     //TODO holiday.xml命名为何不行?
                .deploy();

        /*部署流程定义*/
        ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery()
                .deploymentId(deployment.getId())
                .singleResult();
        System.out.println("Found process definition : " + processDefinition.getName());

        Scanner scanner= new Scanner(System.in);
        System.out.println("Who are you?");
        String employee = scanner.nextLine();
        System.out.println("How many holidays do you want to request?");
        Integer nrOfHolidays = Integer.valueOf(scanner.nextLine());
        System.out.println("Why do you need them?");
        String description = scanner.nextLine();

        RuntimeService runtimeService = processEngine.getRuntimeService();
        /*参数传递*/
        Map variables = new HashMap();
        variables.put("employee", employee);
        variables.put("nrOfHolidays", nrOfHolidays);
        variables.put("description", description);
        /*通过RuntimeService启动流程实例*/
        ProcessInstance processInstance =
                runtimeService.startProcessInstanceByKey("holidayRequest", variables);

        /*得到实际的“managers”组任务列表*/
        TaskService taskService = processEngine.getTaskService();
        List tasks = taskService.createTaskQuery().taskCandidateGroup("managers").list();
        System.out.println("You have " + tasks.size() + " tasks:");
        for (int i=0; i processVariables = taskService.getVariables(task.getId());
        System.out.println(processVariables.get("employee") + " wants " + processVariables.get("nrOfHolidays") + " of holidays. Do you approve this?");

        /*完成任务，传递排他网关条件*/
        boolean approved = scanner.nextLine().toLowerCase().equals("y");
        variables = new HashMap();
        variables.put("approved", approved);
        taskService.complete(task.getId(), variables);

        /*只有一个特定流程实例的活动
          只有完成的活动
          按结束时间排序*/
        HistoryService historyService = processEngine.getHistoryService();
        List activities =
                historyService.createHistoricActivityInstanceQuery()
                        .processInstanceId(processInstance.getId())
                        .finished()
                        .orderByHistoricActivityInstanceEndTime().asc()
                        .list();
        for (HistoricActivityInstance activity : activities) {
            System.out.println(activity.getActivityId() + " took "
                    + activity.getDurationInMillis() + " milliseconds");
        }
    }
}

CallExternalSystemDelegate ：

public class CallExternalSystemDelegate implements JavaDelegate {
    public void execute(DelegateExecution execution) {
        System.out.println("Calling the external system for employee "
                + execution.getVariable("employee"));
    }
}

SendRejectionMail ：

public class SendRejectionMail implements JavaDelegate {
    public void execute(DelegateExecution execution) {
        System.out.println("Calling the external system for employee "
                + execution.getVariable("employee") + "   Rejection---------------------");
    }
}

　　

转载于:https://www.cnblogs.com/skyLogin/p/7088053.html