Activiti6.0流程引擎学习——(11)使用IDEA编码实现的请假流程

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匿名网站用户   2020-12-20 06:00   11   0

本篇博客要使用IDEA来实现之前绘制好的请假流程图。流程图如下：

具体创建这个流程图请看这篇博客：https://blog.csdn.net/JJBOOM425/article/details/85015145

1、创建maven工程

我们在IDEA中new一个maven工程，这里我们不使用脚手架来创建maven工程。直接点击next进行下一步。

然后我们填写工程信息：

2、添加相关的配置

我们打开创建项目后的pom.xml文件，可以看到里面已经有了一些信息：

我们在这个XML文件中添加这个maven工程所需的配置：

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.jjf.activiti</groupId>
    <artifactId>activiti6-leaveprocess</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <!-- Activiti引擎依赖 -->
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-engine</artifactId>
            <version>6.0.0</version>
        </dependency>

        <!-- 单元测试，注意scope，只有在测试时候使用 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>

        <!-- 较受欢迎的日志组建，类似于log4j -->
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-classic</artifactId>
            <version>1.1.11</version>
        </dependency>

        <!-- 常用类 -->
        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>23.0</version>
        </dependency>

        <!-- h2内存级数据库 -->
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <version>1.3.176</version>
        </dependency>
    </dependencies>

</project>

3、创建Activiti流程引擎的启动类

首先在src/main/java目录下创建一个 com.jjf.activiti.leaveprove文件夹，在里面我们创建DemoMain的启动类：

启动类中我们按照四步来创建一个流程的启动类：

一、创建流程引擎

ProcessEngineConfiguration cfg = ProcessEngineConfiguration.createStandaloneInMemProcessEngineConfiguration();   //创建默认的基于内存数据库的流程引擎配置对象
ProcessEngine processEngine = cfg.buildProcessEngine();    //构造流程引擎
String engineName = processEngine.getName();   //获取流程引擎的name
String version = ProcessEngine.VERSION;    //获取流程引擎的版本信息

LOGGER.info("流程引擎名称 [{}], 版本 [{}]", engineName, version);

二、部署流程定义文件

RepositoryService repositoryService = processEngine.getRepositoryService();   //创建一个对流程编译库操作的Service
DeploymentBuilder deploymentBuilder = repositoryService.createDeployment();   //获取一个builder
deploymentBuilder.addClasspathResource("LeaveProcess.bpmn20.xml");   //这里写上流程编译路径
Deployment deployment = deploymentBuilder.deploy();    //部署
String deploymentId = deployment.getId();    //获取deployment的ID
ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery().deploymentId(deploymentId).singleResult();     //根据deploymentId来获取流程定义对象
LOGGER.info("流程定义文件 [{}] , 流程ID [{}]", processDefinition.getName(),

三、启动运行流程

RuntimeService runtimeService = processEngine.getRuntimeService();   //启动流程要有一个运行时对象
ProcessInstance processInstance = runtimeService.startProcessInstanceById(processDefinition.getId());   //这里我们根据processDefinition的ID来启动
LOGGER.info("启动流程 [{}]", processInstance.getProcessDefinitionKey());

四、处理流程任务

        Scanner scanner = new Scanner(System.in);
        while (processInstance != null && !processInstance.isEnded()) {   //判断流程不为空，且流程没有结束
            TaskService taskService = processEngine.getTaskService();
            List<Task> list = taskService.createTaskQuery().list();    //列出当前需要处理的任务
            LOGGER.info("待处理任务数量 [{}]", list.size());
            for (Task task : list) {

                LOGGER.info("待处理任务 [{}]", task.getName());
                FormService formService = processEngine.getFormService();    //通过formService来获取form表单输入
                TaskFormData taskFormData = formService.getTaskFormData (task.getId());
                List<FormProperty> formProperties = taskFormData.getFormProperties();    //获取taskFormData的表单内容
                Map<String,Object> variables = Maps.newHashMap();    //这个Map键值对来存对应表单用户输入的内容
                for (FormProperty property : formProperties){   //property为表单中的内容
                    String line = null;    //这里获取输入的信息
                    if(StringFormType.class.isInstance(property.getType())){   //如果是String类型的话
                        LOGGER.info("请输入 [{}] ?" , property.getName());    //输入form表单的某一项内容
                        line = scanner.nextLine();
                        variables.put(property.getId(),line);
                    }else if(DateFormType.class.isInstance(property.getType())){   //如果是日期类型的话
                        LOGGER.info("请输入 [{}] ? 格式为（yyyy-MM-dd）" , property.getName());    //输入form表单的某一项内容
                        line = scanner.nextLine();
                        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");   //设置输入的日期格式
                        Date date = dateFormat.parse(line);
                        variables.put(property.getId(),date);
                    }else{
                        LOGGER.info("类型不支持 [{}]",property.getType());
                    }
                    LOGGER.info("您输入的内容是 [{}] " , line);
                }
                taskService.complete(task.getId(),variables);
                processInstance = processEngine.getRuntimeService().createProcessInstanceQuery()
                        .processInstanceId(processInstance.getId()).singleResult();
            }
        }
        scanner.close();

4、导入logback文件

将logback.xml导入到resources目录下，为了筛选掉一些对我们来说并没有用到日志信息，我们要在日志中打印输出信息，避免别的信息造成干扰。

其中内容如下：

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <!--定义日志文件的存储地址 勿在 LogBack 的配置中使用相对路径-->
    <property name="LOG_HOME" value="/home/tomcatlog/logs/agent" />
    <property name="plain" value="%msg%n" />

    <!-- 控制台输出 -->
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>${plain}</pattern>
        </encoder>
    </appender>

    <!-- 按照每天生成日志文件 -->
    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${LOG_HOME}/agent.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!--日志文件输出的文件名 -->
            <fileNamePattern>${LOG_HOME}/agent.%d{yyyy-MM-dd}.log
            </fileNamePattern>
            <!--日志文件保留天数 -->
            <maxHistory>30</maxHistory>
        </rollingPolicy>
        <encoder>
            <!--格式化输出：%d表示日期，%thread表示线程名，%-5level：级别从左显示5个字符宽度%msg：日志消息，%n是换行符 -->
            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{80} - %msg%n
            </pattern>
        </encoder>
    </appender>

    <logger name="jdbc.sqlonly" level="OFF" />
    <logger name="jdbc.resultsettable" level="OFF" />
    <logger name="jdbc.sqltiming" level="erroe" />
    <logger name="jdbc.audit" level="error" />
    <logger name="jdbc.connection" level="error" />
    <logger name="jdbc.resultset" level="error" />
    <logger name="root">
        <level value="ERROR"/>
    </logger>
    <logger name="com.jjf">
        <level value="DEBUG"/>
    </logger>

    <!-- 日志输出级别 -->
    <root level="info"><!-- ERROR、WARN、INFO、DEBUG -->
        <appender-ref ref="STDOUT" />
        <appender-ref ref="FILE" />
    </root>
</configuration>

5、复制bpmn流程图文件

这里将我们上一篇博客绘制好的请假流程图复制到resources目录中。

将这个bpmn文件重新拷贝一份，命名为 LeaveProcess.bpmn20.xml。

最后的文件格式如下：

其中LeaveProcess.bpmn20.xml文件内容如下：

<?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="LeaveProcess" name="请假流程" isExecutable="true">
    <startEvent id="startevent" name="开始"></startEvent>
    <userTask id="submitform" name="填写请假申请">
      <extensionElements>
        <activiti:formProperty id="message" name="申请信息" type="string" required="true"></activiti:formProperty>
        <activiti:formProperty id="name" name="申请人姓名" type="string" required="true"></activiti:formProperty>
        <activiti:formProperty id="submitTime" name="提交时间" type="date" datePattern="yyyy-MM-dd" required="true"></activiti:formProperty>
        <activiti:formProperty id="submitType" name="确认申请" type="string" required="true"></activiti:formProperty>
      </extensionElements>
    </userTask>
    <sequenceFlow id="flow1" sourceRef="startevent" targetRef="submitform"></sequenceFlow>
    <exclusiveGateway id="decideSubmit" name="提交或取消"></exclusiveGateway>
    <sequenceFlow id="flow2" sourceRef="submitform" targetRef="decideSubmit"></sequenceFlow>
    <userTask id="ZG_approve" name="部门主管审批">
      <extensionElements>
        <activiti:formProperty id="ZGapprove" name="主管审批结果" type="string" required="true"></activiti:formProperty>
        <activiti:formProperty id="ZGmessage" name="主管备注" type="string" required="true"></activiti:formProperty>
      </extensionElements>
    </userTask>
    <sequenceFlow id="flow3" sourceRef="decideSubmit" targetRef="ZG_approve">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${submitType=="y" || submitType=="Y"}]]></conditionExpression>
    </sequenceFlow>
    <exclusiveGateway id="decideZGapprove" name="主管审批校验"></exclusiveGateway>
    <sequenceFlow id="flow4" sourceRef="ZG_approve" targetRef="decideZGapprove"></sequenceFlow>
    <userTask id="ZJL_approve" name="总经理审批">
      <extensionElements>
        <activiti:formProperty id="ZJLapprove" name="总经理审批结果" type="string" required="true"></activiti:formProperty>
        <activiti:formProperty id="ZJLmessage" name="总经理备注" type="string" required="true"></activiti:formProperty>
      </extensionElements>
    </userTask>
    <sequenceFlow id="flow5" sourceRef="decideZGapprove" targetRef="ZJL_approve">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${ZGapprove=="y" || ZGapprove=="Y"}]]></conditionExpression>
    </sequenceFlow>
    <exclusiveGateway id="decideZJLapprove" name="总经理审批校验"></exclusiveGateway>
    <sequenceFlow id="flow6" sourceRef="ZJL_approve" targetRef="decideZJLapprove"></sequenceFlow>
    <endEvent id="endevent" name="结束"></endEvent>
    <sequenceFlow id="flow7" sourceRef="decideZJLapprove" targetRef="endevent">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${ZJLapprove=="y" || ZJLapprove=="Y"}]]></conditionExpression>
    </sequenceFlow>
    <endEvent id="endeventCancel" name="取消"></endEvent>
    <sequenceFlow id="flow8" sourceRef="decideSubmit" targetRef="endeventCancel">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${submitType=="n" || submitType=="N"}]]></conditionExpression>
    </sequenceFlow>
    <sequenceFlow id="flow9" sourceRef="decideZGapprove" targetRef="submitform">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${ZGapprove=="n" || ZGapprove=="N"}]]></conditionExpression>
    </sequenceFlow>
    <sequenceFlow id="flow10" sourceRef="decideZJLapprove" targetRef="submitform">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${ZJLapprove=="n" || ZJLapprove=="N"}]]></conditionExpression>
    </sequenceFlow>
  </process>
  <bpmndi:BPMNDiagram id="BPMNDiagram_LeaveProcess">
    <bpmndi:BPMNPlane bpmnElement="LeaveProcess" id="BPMNPlane_LeaveProcess">
      <bpmndi:BPMNShape bpmnElement="startevent" id="BPMNShape_startevent">
        <omgdc:Bounds height="35.0" width="35.0" x="65.0" y="279.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="submitform" id="BPMNShape_submitform">
        <omgdc:Bounds height="55.0" width="105.0" x="145.0" y="269.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="decideSubmit" id="BPMNShape_decideSubmit">
        <omgdc:Bounds height="40.0" width="40.0" x="295.0" y="277.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="ZG_approve" id="BPMNShape_ZG_approve">
        <omgdc:Bounds height="55.0" width="105.0" x="380.0" y="270.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="decideZGapprove" id="BPMNShape_decideZGapprove">
        <omgdc:Bounds height="40.0" width="40.0" x="530.0" y="278.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="ZJL_approve" id="BPMNShape_ZJL_approve">
        <omgdc:Bounds height="55.0" width="105.0" x="615.0" y="271.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="decideZJLapprove" id="BPMNShape_decideZJLapprove">
        <omgdc:Bounds height="40.0" width="40.0" x="765.0" y="279.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="endevent" id="BPMNShape_endevent">
        <omgdc:Bounds height="35.0" width="35.0" x="850.0" y="282.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="endeventCancel" id="BPMNShape_endeventCancel">
        <omgdc:Bounds height="35.0" width="35.0" x="395.0" y="329.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
        <omgdi:waypoint x="100.0" y="296.0"></omgdi:waypoint>
        <omgdi:waypoint x="145.0" y="296.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
        <omgdi:waypoint x="250.0" y="296.0"></omgdi:waypoint>
        <omgdi:waypoint x="295.0" y="297.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
        <omgdi:waypoint x="335.0" y="297.0"></omgdi:waypoint>
        <omgdi:waypoint x="380.0" y="297.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow4" id="BPMNEdge_flow4">
        <omgdi:waypoint x="485.0" y="297.0"></omgdi:waypoint>
        <omgdi:waypoint x="530.0" y="298.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow5" id="BPMNEdge_flow5">
        <omgdi:waypoint x="570.0" y="298.0"></omgdi:waypoint>
        <omgdi:waypoint x="615.0" y="298.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow6" id="BPMNEdge_flow6">
        <omgdi:waypoint x="720.0" y="298.0"></omgdi:waypoint>
        <omgdi:waypoint x="765.0" y="299.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow7" id="BPMNEdge_flow7">
        <omgdi:waypoint x="805.0" y="299.0"></omgdi:waypoint>
        <omgdi:waypoint x="850.0" y="299.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow8" id="BPMNEdge_flow8">
        <omgdi:waypoint x="315.0" y="317.0"></omgdi:waypoint>
        <omgdi:waypoint x="315.0" y="346.0"></omgdi:waypoint>
        <omgdi:waypoint x="395.0" y="346.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow9" id="BPMNEdge_flow9">
        <omgdi:waypoint x="550.0" y="318.0"></omgdi:waypoint>
        <omgdi:waypoint x="549.0" y="382.0"></omgdi:waypoint>
        <omgdi:waypoint x="397.0" y="382.0"></omgdi:waypoint>
        <omgdi:waypoint x="197.0" y="382.0"></omgdi:waypoint>
        <omgdi:waypoint x="197.0" y="324.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow10" id="BPMNEdge_flow10">
        <omgdi:waypoint x="785.0" y="279.0"></omgdi:waypoint>
        <omgdi:waypoint x="784.0" y="222.0"></omgdi:waypoint>
        <omgdi:waypoint x="505.0" y="222.0"></omgdi:waypoint>
        <omgdi:waypoint x="197.0" y="222.0"></omgdi:waypoint>
        <omgdi:waypoint x="197.0" y="269.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
    </bpmndi:BPMNPlane>
  </bpmndi:BPMNDiagram>
</definitions>

6、对代码进行重构

这里我将可以写成函数的代码选取，然后右键Refactor->Extract->Method... 。

这里写重构函数的函数名：

最后得到我的DemoMain.class如下：

package com.jjf.activiti.leaveprovess;


import com.google.common.collect.Maps;
import org.activiti.engine.*;
import org.activiti.engine.form.FormProperty;
import org.activiti.engine.form.TaskFormData;
import org.activiti.engine.impl.form.DateFormType;
import org.activiti.engine.impl.form.StringFormType;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.repository.DeploymentBuilder;
import org.activiti.engine.repository.ProcessDefinition;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.Scanner;

public class DemoMain{
    private static final Logger LOGGER = LoggerFactory.getLogger(DemoMain.class);
    public static void main(String[] args) throws ParseException {
        LOGGER.info("开始请假流程 . . .");
        //创建流程引擎
        ProcessEngine processEngine = getProcessEngine();

        //部署流程定义文件
        ProcessDefinition processDefinition = getProcessDefinition(processEngine);

        //启动运行流程
        ProcessInstance processInstance = getProcessInstance(processEngine, processDefinition);

        //处理流程任务
        processTask(processEngine, processInstance);
        LOGGER.info("结束请假流程 . . ");
    }

    /**
     * 处理流程任务
     * @param processEngine
     * @param processInstance
     * @throws ParseException
     */
    private static void processTask(ProcessEngine processEngine, ProcessInstance processInstance) throws ParseException {
        Scanner scanner = new Scanner(System.in);
        while (processInstance != null && !processInstance.isEnded()) {   //判断流程不为空，且流程没有结束
            TaskService taskService = processEngine.getTaskService();
            List<Task> list = taskService.createTaskQuery().list();    //列出当前需要处理的任务
            LOGGER.info("待处理任务数量 [{}]", list.size());
            for (Task task : list) {

                LOGGER.info("待处理任务 [{}]", task.getName());
                Map<String, Object> variables = getMap(processEngine, scanner, task);     //获取用户的输入信息
                taskService.complete(task.getId(),variables);
                processInstance = processEngine.getRuntimeService().createProcessInstanceQuery()
                        .processInstanceId(processInstance.getId()).singleResult();
            }
        }
        scanner.close();
    }

    /**
     * 获取用户的输入信息
     * @param processEngine
     * @param scanner
     * @param task
     * @return
     * @throws ParseException
     */
    private static Map<String, Object> getMap(ProcessEngine processEngine, Scanner scanner, Task task) throws ParseException {
        FormService formService = processEngine.getFormService();    //通过formService来获取form表单输入
        TaskFormData taskFormData = formService.getTaskFormData (task.getId());
        List<FormProperty> formProperties = taskFormData.getFormProperties();    //获取taskFormData的表单内容
        Map<String,Object> variables = Maps.newHashMap();    //这个Map键值对来存对应表单用户输入的内容
        for (FormProperty property : formProperties){   //property为表单中的内容
            String line = null;    //这里获取输入的信息
            if(StringFormType.class.isInstance(property.getType())){   //如果是String类型的话
                LOGGER.info("请输入 [{}] ?" , property.getName());    //输入form表单的某一项内容
                line = scanner.nextLine();
                variables.put(property.getId(),line);
            }else if(DateFormType.class.isInstance(property.getType())){   //如果是日期类型的话
                LOGGER.info("请输入 [{}] ? 格式为（yyyy-MM-dd）" , property.getName());    //输入form表单的某一项内容
                line = scanner.nextLine();
                SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");   //设置输入的日期格式
                Date date = dateFormat.parse(line);
                variables.put(property.getId(),date);
            }else{
                LOGGER.info("类型不支持 [{}]",property.getType());
            }
            LOGGER.info("您输入的内容是 [{}] " , line);
        }
        return variables;
    }

    /**
     * 启动运行流程
     *
     * @param processEngine
     * @param processDefinition
     */
    private static ProcessInstance getProcessInstance(ProcessEngine processEngine, ProcessDefinition processDefinition) {
        RuntimeService runtimeService = processEngine.getRuntimeService();   //启动流程要有一个运行时对象
        ProcessInstance processInstance = runtimeService.startProcessInstanceById(processDefinition.getId());   //这里我们根据processDefinition的ID来启动
        LOGGER.info("启动流程 [{}]", processInstance.getProcessDefinitionKey());
        return processInstance;
    }

    /**
     * 部署流程定义文件
     *
     * @param processEngine
     * @return
     */
    private static ProcessDefinition getProcessDefinition(ProcessEngine processEngine) {
        RepositoryService repositoryService = processEngine.getRepositoryService();   //创建一个对流程编译库操作的Service
        DeploymentBuilder deploymentBuilder = repositoryService.createDeployment();   //获取一个builder
        deploymentBuilder.addClasspathResource("LeaveProcess.bpmn20.xml");   //这里写上流程编译路径
        Deployment deployment = deploymentBuilder.deploy();    //部署
        String deploymentId = deployment.getId();    //获取deployment的ID
        ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery().deploymentId(deploymentId).singleResult();     //根据deploymentId来获取流程定义对象
        LOGGER.info("流程定义文件 [{}] , 流程ID [{}]", processDefinition.getName(), processDefinition.getId());
        return processDefinition;
    }

    /**
     * 创建流程引擎
     *
     * @return
     */
    private static ProcessEngine getProcessEngine() {
        ProcessEngineConfiguration cfg = ProcessEngineConfiguration.createStandaloneInMemProcessEngineConfiguration();   //创建默认的基于内存数据库的流程引擎配置对象
        ProcessEngine processEngine = cfg.buildProcessEngine();    //构造流程引擎
        String engineName = processEngine.getName();   //获取流程引擎的name
        String version = ProcessEngine.VERSION;    //获取流程引擎的版本信息

        LOGGER.info("流程引擎名称 [{}], 版本 [{}]", engineName, version);
        return processEngine;
    }
}

7、执行请假流程

这里我们的输入是有一定的格式的，比如提交时间一定要按照格式输入，并且确认申请与审批结果都只能输入y/Y或n/N。因为这些我们在流程图中定义好的，如果有什么问题可以先看流程图绘制的博客。

以上就是我们对请假流程的编码实现。

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