SpringBoot2.0.1与flowable工作流引擎如何整合

发布时间：2021-11-25 09:20:33 作者：小新
来源：亿速云阅读：160

这篇文章主要介绍了SpringBoot2.0.1与flowable工作流引擎如何整合，具有一定借鉴价值，感兴趣的朋友可以参考下，希望大家阅读完这篇文章之后大有收获，下面让小编带着大家一起了解一下。

1.准备依赖，pom.xml文件如下

<?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">

<groupId>activiti.demo</groupId>

<artifactId>activiti-demo</artifactId>

<version>1.0-SNAPSHOT</version>

<name>activiti-demo</name>

<description>spring-activiti-demo</description>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-parent</artifactId>

<version>2.0.1.RELEASE</version>

</parent>

<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

<java.version>1.8</java.version>

</properties>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-web</artifactId>

</dependency>

<groupId>org.flowable</groupId>

<artifactId>flowable-spring-boot-starter</artifactId>

</dependency>

<groupId>mysql</groupId>

<artifactId>mysql-connector-java</artifactId>

</dependency>

</dependencies>

<build>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-maven-plugin</artifactId>

</plugin>

</plugins>

</build>

</project>

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2.准备流程文件，ExpenseProcess.bpmn20.xml文件如下

<?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:flowable="http://flowable.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.flowable.org/processdef">

<modeler:initiator-can-complete xmlns:modeler="http://flowable.org/modeler">

<![CDATA[false]]></modeler:initiator-can-complete>

</extensionElements>

</userTask>

<flowable:taskListener event="create"

class="com.springboot.demo.handler.ManagerTaskHandler"></flowable:taskListener>

</extensionElements>

</userTask>

<flowable:taskListener event="create"

class="com.springboot.demo.handler.BossTaskHandler"></flowable:taskListener>

</extensionElements>

</userTask>

</sequenceFlow>

</sequenceFlow>

</sequenceFlow>

</sequenceFlow>

</sequenceFlow>

</sequenceFlow>

</process>

<bpmndi:BPMNDiagram id="BPMNDiagram_Expense">

<bpmndi:BPMNPlane bpmnElement="Expense" id="BPMNPlane_Expense">

<bpmndi:BPMNShape bpmnElement="start" id="BPMNShape_start">

<omgdc:Bounds height="30.0" width="30.0" x="285.0" y="135.0"></omgdc:Bounds>

</bpmndi:BPMNShape>

<bpmndi:BPMNShape bpmnElement="fillTask" id="BPMNShape_fillTask">

<omgdc:Bounds height="80.0" width="100.0" x="405.0" y="110.0"></omgdc:Bounds>

</bpmndi:BPMNShape>

<bpmndi:BPMNShape bpmnElement="judgeTask" id="BPMNShape_judgeTask">

<omgdc:Bounds height="40.0" width="40.0" x="585.0" y="130.0"></omgdc:Bounds>

</bpmndi:BPMNShape>

<bpmndi:BPMNShape bpmnElement="directorTak" id="BPMNShape_directorTak">

<omgdc:Bounds height="80.0" width="100.0" x="735.0" y="110.0"></omgdc:Bounds>

</bpmndi:BPMNShape>

<bpmndi:BPMNShape bpmnElement="bossTask" id="BPMNShape_bossTask">

<omgdc:Bounds height="80.0" width="100.0" x="555.0" y="255.0"></omgdc:Bounds>

</bpmndi:BPMNShape>

<bpmndi:BPMNShape bpmnElement="end" id="BPMNShape_end">

<omgdc:Bounds height="28.0" width="28.0" x="771.0" y="281.0"></omgdc:Bounds>

</bpmndi:BPMNShape>

<bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">

<omgdi:waypoint x="315.0" y="150.0"></omgdi:waypoint>

<omgdi:waypoint x="405.0" y="150.0"></omgdi:waypoint>

</bpmndi:BPMNEdge>

<bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">

<omgdi:waypoint x="505.0" y="150.16611295681062"></omgdi:waypoint>

<omgdi:waypoint x="585.4333333333333" y="150.43333333333334"></omgdi:waypoint>

</bpmndi:BPMNEdge>

<bpmndi:BPMNEdge bpmnElement="judgeLess" id="BPMNEdge_judgeLess">

<omgdi:waypoint x="624.5530726256983" y="150.44692737430168"></omgdi:waypoint>

<omgdi:waypoint x="735.0" y="150.1392757660167"></omgdi:waypoint>

</bpmndi:BPMNEdge>

<bpmndi:BPMNEdge bpmnElement="directorNotPassFlow" id="BPMNEdge_directorNotPassFlow">

<omgdi:waypoint x="785.0" y="110.0"></omgdi:waypoint>

<omgdi:waypoint x="785.0" y="37.0"></omgdi:waypoint>

<omgdi:waypoint x="455.0" y="37.0"></omgdi:waypoint>

<omgdi:waypoint x="455.0" y="110.0"></omgdi:waypoint>

</bpmndi:BPMNEdge>

<bpmndi:BPMNEdge bpmnElement="bossPassFlow" id="BPMNEdge_bossPassFlow">

<omgdi:waypoint x="655.0" y="295.0"></omgdi:waypoint>

<omgdi:waypoint x="771.0" y="295.0"></omgdi:waypoint>

</bpmndi:BPMNEdge>

<bpmndi:BPMNEdge bpmnElement="judgeMore" id="BPMNEdge_judgeMore">

<omgdi:waypoint x="605.4340277777778" y="169.56597222222223"></omgdi:waypoint>

<omgdi:waypoint x="605.1384083044983" y="255.0"></omgdi:waypoint>

</bpmndi:BPMNEdge>

<bpmndi:BPMNEdge bpmnElement="directorPassFlow" id="BPMNEdge_directorPassFlow">

<omgdi:waypoint x="785.0" y="190.0"></omgdi:waypoint>

<omgdi:waypoint x="785.0" y="281.0"></omgdi:waypoint>

</bpmndi:BPMNEdge>

<bpmndi:BPMNEdge bpmnElement="bossNotPassFlow" id="BPMNEdge_bossNotPassFlow">

<omgdi:waypoint x="555.0" y="295.0"></omgdi:waypoint>

<omgdi:waypoint x="455.0" y="295.0"></omgdi:waypoint>

<omgdi:waypoint x="455.0" y="190.0"></omgdi:waypoint>

</bpmndi:BPMNEdge>

</bpmndi:BPMNPlane>

</bpmndi:BPMNDiagram>

</definitions>

-----------------------------------------------------------------------------------------------------------------------

3.准备SpringBoot属性文件，application.properties内容如下

spring.datasource.driver-class-name=com.mysql.jdbc.Driver

spring.datasource.url=jdbc:mysql://127.0.0.1:3306/xh_activiti?useSSL=false&serverTimezone=UTC&useLegacyDatetimeCode=false&autoReconnect=true&failOverReadOnly=false&useUnicode=true&characterEncoding=UTF-8

spring.datasource.username=root

spring.datasource.password=123456

spring.jpa.properties.hibernate.hbm2ddl.auto=update

spring.jpa.show-sql=true

server.port=8082

server.tomcat.uri-encoding=UTF-8

flowable.async-executor-activate=false

-----------------------------------------------------------------------------------------------------------------------

4.编写流程中用到的处理类

包名：com.springboot.demo.handler

类名：ManagerTaskHandler

类内容如下

package com.springboot.demo.handler;

import org.flowable.engine.delegate.TaskListener;

import org.flowable.task.service.delegate.DelegateTask;

/**

* @ClassName ManagerTaskHandler

* @Description TODO

* @Author yunshuodeng

* @Date 2019-05-05 09:53

* @Version 1.0

**/

public class ManagerTaskHandler implements TaskListener {

@Override

public void notify(DelegateTask delegateTask) {

delegateTask.setAssignee("经理");

}

包名：com.springboot.demo.handler

类名：BossTaskHandler

类内容如下

package com.springboot.demo.handler;

import org.flowable.engine.delegate.TaskListener;

import org.flowable.task.service.delegate.DelegateTask;

/**

* @ClassName BossTaskHandler

* @Description TODO

* @Author yunshuodeng

* @Date 2019-05-05 09:54

* @Version 1.0

**/

public class BossTaskHandler implements TaskListener {

@Override

public void notify(DelegateTask delegateTask) {

delegateTask.setAssignee("老板");

}

-----------------------------------------------------------------------------------------------------------------------

5.编写控制器

包名：com.springboot.demo.controller

类名：ExpenseController

类内容如下：

package com.springboot.demo.controller;

import org.flowable.bpmn.model.BpmnModel;

import org.flowable.engine.*;

import org.flowable.engine.runtime.Execution;

import org.flowable.engine.runtime.ProcessInstance;

import org.flowable.image.ProcessDiagramGenerator;

import org.flowable.task.api.Task;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.util.StringUtils;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpServletResponse;

import java.io.InputStream;

import java.io.OutputStream;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

/**

* @ClassName ExpenseController

* @Description TODO

* @Author yunshuodeng

* @Date 2019-05-05 09:57

* @Version 1.0

**/

@Controller

@RequestMapping(value = "expense")

public class ExpenseController {

@Autowired

private RuntimeService runtimeService;

@Autowired

private TaskService taskService;

@Autowired

private RepositoryService repositoryService;

@Autowired

private ProcessEngine processEngine;

/**

* 生成当前流程图

* @param httpServletResponse

* @param processId

@RequestMapping(value = "processDiagram")

public void genProcessDiagram(HttpServletResponse httpServletResponse,String processId){

try {

ProcessInstance processInstance = runtimeService.createProcessInstanceQuery().processInstanceId(processId).singleResult();

if (StringUtils.isEmpty(processInstance)){

return;

}

Task task = taskService.createTaskQuery().processInstanceId(processInstance.getId()).singleResult();

String instanceId = task.getProcessInstanceId();

List<Execution> executionList = runtimeService.createExecutionQuery().processInstanceId(instanceId).list();

List<String> activityIdList = new ArrayList<>();

List<String> flowList = new ArrayList<>();

for (Execution execution : executionList){

List<String> idList = runtimeService.getActiveActivityIds(execution.getId());

activityIdList.addAll(idList);

}

BpmnModel bpmnModel = repositoryService.getBpmnModel(processInstance.getProcessDefinitionId());

ProcessEngineConfiguration processEngineConfiguration = processEngine.getProcessEngineConfiguration();

ProcessDiagramGenerator processDiagramGenerator = processEngineConfiguration.getProcessDiagramGenerator();

InputStream inputStream = processDiagramGenerator.generateDiagram(bpmnModel,"png",activityIdList,flowList,

processEngineConfiguration.getActivityFontName(),

processEngineConfiguration.getLabelFontName(),

processEngineConfiguration.getAnnotationFontName(),

processEngineConfiguration.getClassLoader(),

1.0);

OutputStream out = null;

byte[] buf = new byte[1024];

int legth = 0;

try {

out = httpServletResponse.getOutputStream();

while ((legth = inputStream.read(buf)) != -1) {

out.write(buf, 0, legth);

}

} finally {

if (inputStream != null) {

inputStream.close();

}

if (out != null) {

out.close();

}

}catch (Exception e){

System.out.println(e.getMessage());

}

/**

* 审核-拒绝

* @param taskId

* @return

@RequestMapping(value = "reject")

@ResponseBody

public String reject(String taskId){

HashMap<String,Object> map = new HashMap<>();

map.put("outcome","驳回");

taskService.complete(taskId,map);

return "reject";

}

/**

* 审核-通过

* @param taskId

* @return

@RequestMapping(value = "apply")

@ResponseBody

public String apply(String taskId){

Task task = taskService.createTaskQuery().taskId(taskId).singleResult();

if (StringUtils.isEmpty(task)){

throw new RuntimeException("流程不存在");

}

HashMap<String,Object> map = new HashMap<>();

map.put("outcome","通过");

taskService.complete(taskId,map);

return "processed ok";

}

/**

* 获取审批列表

* @param userId

* @return

@RequestMapping(value = "list")

@ResponseBody

public Object list(String userId){

String temp = "";

List<Task> taskList = taskService.createTaskQuery().taskAssignee(userId).orderByTaskCreateTime().desc().list();

for (Task task : taskList){

temp += task.toString();

System.out.println(task.toString());

}

return temp;

}

/**

* 开始报销流程

* @param userId 用户ID

* @param money 报销金额

* @param description 描述

* @return

@RequestMapping(value = "add")

@ResponseBody

public String addExpense(String userId,Integer money,String description){

HashMap<String,Object> map = new HashMap<>();

map.put("taskUser",userId);

map.put("money",money);

map.put("description",description);

ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("Expense",map);

return "提交成功，流程ID为"+processInstance.getId();

}

-----------------------------------------------------------------------------------------------------------------------

6.启动服务，没有报错即可

7.分别访问如下地址进行流程的执行操作

1）提交报销申请

请求地址：http://localhost:8082/expense/add?userId=4&money=2000

返回结果：提交成功，流程ID为5043

说明：

http://localhost本地服务

8082表示本地服务对外提供访问端口

expense表示控制器名称

add表示控制器中的方法，该方法用于开始报销流程，也就是提交报销申请

userId=4表示用户ID为4

money=2000表示报销金额为2000

2）查看待办列表

请求地址：http://localhost:8082/expense/list?userId=4

返回结果：Task[id=5050, name=出差报销]

说明：

http://localhost本地服务

8082表示本地服务对外提供访问端口

expense表示控制器名称

list表示获取待办列表方法名

userId=4表示用户ID为4,获取用户ID为4的待办事项列表

3）对报销申请进行审核，且审核结果为通过

请求地址：http://localhost:8082/expense/apply?taskId=5050

返回结果：processed ok

说明：

http://localhost本地服务

8082表示本地服务对外提供访问端口

expense表示控制器名称

apply表示审核通过方法

taskId表示任务ID，些任务ID是查看待办列表中的某个任务ID

4）生成当前任务状态图

请求地址：http://localhost:8082/expense/processDiagram?processId=5043

返回结果：在浏览器中一张图片

说明：

http://localhost本地服务

8082表示本地服务对外提供访问端口

expense表示控制器名称

processDiagram表示生成图片方法

processId=5043表示流程ID，该流程ID是第1步提交报销申请时返回的流程ID

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SpringBoot2.0.1与flowable工作流引擎如何整合

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