Activiti 6.0 工作流入门 之HelloWorld（1）

其他 2018-09-28 22:17:28 阅读次数: 0
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 1.下载

http://activiti.org/download.html

2.Activiti源码

https://github.com/Activiti/Activiti

3.JDK 6+

Activiti的需要JDK 6或以上版本。

4.Activiti用户手册

http://www.mossle.com/docs/activiti/5.21/index.html#license

5.项目结构：

DemoMain类:

package com.lucifer.activiti.helloworld;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngineConfiguration;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.RuntimeService;
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.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author: Lucifer
 * @create: 2018-09-18 14:23
 * @description: 启动类
 **/
public class DemoMain {

    private static final Logger LOGGER = LoggerFactory.getLogger(DemoMain.class);

    public static void main(String[] args) {
        LOGGER.info("启动我们的流程");
        //创建流程引擎
        ProcessEngineConfiguration cfg = ProcessEngineConfiguration.createStandaloneInMemProcessEngineConfiguration();
        ProcessEngine processEngine = cfg.buildProcessEngine();
        String name = processEngine.getName();
        String version = ProcessEngine.VERSION;
        LOGGER.info("流程引擎版本{},版本{}", name, version);
        //部署流程定义文件
        RepositoryService repositoryService = processEngine.getRepositoryService();
        DeploymentBuilder deploymentBuilder = repositoryService.createDeployment();
        deploymentBuilder.addClasspathResource("second-approve.bpmn20.xml");
        Deployment deployment = deploymentBuilder.deploy();
        String deploymentId = deployment.getId();
        ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery().deploymentId(deploymentId).singleResult();
        LOGGER.info("流程定义文件{},流程ID{}",processDefinition.getName(),processDefinition.getId());

        //启动运行流程
        RuntimeService runtimeService = processEngine.getRuntimeService();
        ProcessInstance processInstance = runtimeService.startProcessInstanceById(processDefinition.getId());
        System.out.println(processInstance);
        LOGGER.info("启动流程{}",processInstance.getProcessDefinitionKey());

        //处理流程任务




        LOGGER.info("结束我们的流程");
    }


}

logback.xml（日志配置文件）：

<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="false" scan="true" scanPeriod="30 seconds">
    <property name="log.dir" value="target/logs" />
    <property name="encoding" value="UTF-8" />
    <property name="plain" value="%msg%n" />
    <property name="std" value="%d{HH:mm:ss.SSS}[%thread][%-5level]%msg %X{user} %logger{10}.%M:%L%n" />
    <property name="normal" value="%d{yyyy-MM-dd:HH:mm:ss.SSS}[%thread][%-5level] %logger{10}.%M:%L  %msg%n" />
    <!-- 控制台输出 -->
    <appender name="stdout" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>${plain}</pattern>
            <charset>${encoding}</charset>
        </encoder>
    </appender>

    <!-- 时间滚动输出 level为 ALL 日志 -->
    <appender name="file"
              class="ch.qos.logback.core.rolling.RollingFileAppender">
        <File>${log.dir}/file.log</File>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <FileNamePattern>${log.dir}/file.%d{yyyy-MM-dd}.log</FileNamePattern>
            <MaxHistory>30</MaxHistory>
        </rollingPolicy>
        <encoder>
            <pattern>${std}</pattern>
            <charset>${encoding}</charset>
        </encoder>
    </appender>
    <logger name="root" >
        <level value="ERROR"/>
    </logger>

    <!--此处的name记得改成自己的 -->
    <logger name="com.lucifer" >
        <level value="DEBUG"/>
    </logger>
    <root>
        <appender-ref ref="stdout" />
        <appender-ref ref="file" />
    </root>
</configuration>

second-approve.bpmn： 

ps:此处的second-approve.bpmn20.xml文件就是second-approve.bpmn改了后缀名得到的文件。

second-approve.bpmn20.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="second_approve" name="二级审批流程" isExecutable="true">
    <startEvent id="startEvent" name="开始"></startEvent>
    <userTask id="submitForm" name="填写审批信息">
      <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OR取消"></exclusiveGateway>
    <sequenceFlow id="flow2" sourceRef="submitForm" targetRef="decideSubmit"></sequenceFlow>
    <userTask id="tl_approve" name="主管审批">
      <extensionElements>
        <activiti:formProperty id="tlApprove" name="主管审批结果" type="string"></activiti:formProperty>
        <activiti:formProperty id="tlMessage" name="主管备注" type="string" required="true"></activiti:formProperty>
      </extensionElements>
    </userTask>
    <sequenceFlow id="flow3" sourceRef="decideSubmit" targetRef="tl_approve">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${submitType == "y" || submitType == "Y"}]]></conditionExpression>
    </sequenceFlow>
    <exclusiveGateway id="decideTLApprove" name="主管审批校验"></exclusiveGateway>
    <sequenceFlow id="flow4" sourceRef="tl_approve" targetRef="decideTLApprove"></sequenceFlow>
    <userTask id="hr_approve" name="人事审批">
      <extensionElements>
        <activiti:formProperty id="hrApprove" name="人事审批结果" type="string" required="true"></activiti:formProperty>
        <activiti:formProperty id="hrMessage" name="人事审批备注" type="string" required="true"></activiti:formProperty>
      </extensionElements>
    </userTask>
    <sequenceFlow id="flow5" sourceRef="decideTLApprove" targetRef="hr_approve">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${tlApprove == "y" || tlApprove == "Y"}]]></conditionExpression>
    </sequenceFlow>
    <exclusiveGateway id="decideHRApprove" name="人事审批校验"></exclusiveGateway>
    <sequenceFlow id="flow6" sourceRef="hr_approve" targetRef="decideHRApprove"></sequenceFlow>
    <endEvent id="endEvent" name="结束"></endEvent>
    <sequenceFlow id="flow7" sourceRef="decideHRApprove" targetRef="endEvent">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${hrApprove == "y" || hrApprove == "Y"}]]></conditionExpression>
    </sequenceFlow>
    <endEvent id="endEventCancel" name="取消"></endEvent>
    <sequenceFlow id="flow8" sourceRef="decideSubmit" targetRef="endEventCancel">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${submitType == "n" || submitType == "N"}]]></conditionExpression>
    </sequenceFlow>
    <sequenceFlow id="flow9" sourceRef="decideTLApprove" targetRef="submitForm">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${tlApprove == "n" || tlApprove == "N"}]]></conditionExpression>
    </sequenceFlow>
    <sequenceFlow id="flow10" sourceRef="decideHRApprove" targetRef="submitForm">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${hrApprove == "n" || hrApprove == "N"}]]></conditionExpression>
    </sequenceFlow>
  </process>
  <bpmndi:BPMNDiagram id="BPMNDiagram_second_approve">
    <bpmndi:BPMNPlane bpmnElement="second_approve" id="BPMNPlane_second_approve">
      <bpmndi:BPMNShape bpmnElement="startEvent" id="BPMNShape_startEvent">
        <omgdc:Bounds height="35.0" width="35.0" x="160.0" y="180.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="submitForm" id="BPMNShape_submitForm">
        <omgdc:Bounds height="55.0" width="105.0" x="240.0" y="170.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="decideSubmit" id="BPMNShape_decideSubmit">
        <omgdc:Bounds height="40.0" width="40.0" x="390.0" y="178.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="tl_approve" id="BPMNShape_tl_approve">
        <omgdc:Bounds height="55.0" width="105.0" x="475.0" y="171.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="decideTLApprove" id="BPMNShape_decideTLApprove">
        <omgdc:Bounds height="40.0" width="40.0" x="625.0" y="179.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="hr_approve" id="BPMNShape_hr_approve">
        <omgdc:Bounds height="55.0" width="105.0" x="710.0" y="172.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="decideHRApprove" id="BPMNShape_decideHRApprove">
        <omgdc:Bounds height="40.0" width="40.0" x="860.0" y="180.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="endEvent" id="BPMNShape_endEvent">
        <omgdc:Bounds height="35.0" width="35.0" x="945.0" y="183.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="endEventCancel" id="BPMNShape_endEventCancel">
        <omgdc:Bounds height="35.0" width="35.0" x="510.0" y="250.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
        <omgdi:waypoint x="195.0" y="197.0"></omgdi:waypoint>
        <omgdi:waypoint x="240.0" y="197.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
        <omgdi:waypoint x="345.0" y="197.0"></omgdi:waypoint>
        <omgdi:waypoint x="390.0" y="198.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
        <omgdi:waypoint x="430.0" y="198.0"></omgdi:waypoint>
        <omgdi:waypoint x="475.0" y="198.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow4" id="BPMNEdge_flow4">
        <omgdi:waypoint x="580.0" y="198.0"></omgdi:waypoint>
        <omgdi:waypoint x="625.0" y="199.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow5" id="BPMNEdge_flow5">
        <omgdi:waypoint x="665.0" y="199.0"></omgdi:waypoint>
        <omgdi:waypoint x="710.0" y="199.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow6" id="BPMNEdge_flow6">
        <omgdi:waypoint x="815.0" y="199.0"></omgdi:waypoint>
        <omgdi:waypoint x="860.0" y="200.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow7" id="BPMNEdge_flow7">
        <omgdi:waypoint x="900.0" y="200.0"></omgdi:waypoint>
        <omgdi:waypoint x="945.0" y="200.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow8" id="BPMNEdge_flow8">
        <omgdi:waypoint x="410.0" y="218.0"></omgdi:waypoint>
        <omgdi:waypoint x="410.0" y="266.0"></omgdi:waypoint>
        <omgdi:waypoint x="510.0" y="267.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow9" id="BPMNEdge_flow9">
        <omgdi:waypoint x="645.0" y="219.0"></omgdi:waypoint>
        <omgdi:waypoint x="644.0" y="297.0"></omgdi:waypoint>
        <omgdi:waypoint x="292.0" y="296.0"></omgdi:waypoint>
        <omgdi:waypoint x="292.0" y="225.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow10" id="BPMNEdge_flow10">
        <omgdi:waypoint x="880.0" y="180.0"></omgdi:waypoint>
        <omgdi:waypoint x="880.0" y="133.0"></omgdi:waypoint>
        <omgdi:waypoint x="290.0" y="132.0"></omgdi:waypoint>
        <omgdi:waypoint x="292.0" y="170.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
    </bpmndi:BPMNPlane>
  </bpmndi:BPMNDiagram>
</definitions>

pom.xml:

<?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.lucifer</groupId>
    <artifactId>acitiviti-helloworld</artifactId>
    <version>1.0-SNAPSHOT</version>
    <dependencies>
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-engine</artifactId>
            <version>6.0.0</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>23.0</version>
        </dependency>
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-classic</artifactId>
            <version>1.2.3</version>
        </dependency>
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <version>1.4.195</version>
        </dependency>
    </dependencies>

</project>

控制台输出：

ps:

如果将second-approve.bpmn20.xml改成second-approve.bpmn.xml，启动项目，控制台会报错，提示空指针。

原因：

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