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這篇文章主要介紹了SpringBoot2.0.1與flowable工作流引擎如何整合，具有一定借鑒價值，感興趣的朋友可以參考下，希望大家閱讀完這篇文章之后大有收獲，下面讓小編帶著大家一起了解一下。
1.準備依賴，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">
<modelVersion>4.0.0</modelVersion>
<groupId>activiti.demo</groupId>
<artifactId>activiti-demo</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>activiti-demo</name>
<description>spring-activiti-demo</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.1.RELEASE</version>
<relativePath/>
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.flowable</groupId>
<artifactId>flowable-spring-boot-starter</artifactId>
<version>6.3.0</version>
</dependency>
<!--MySQL 驅動包，如果是其他庫的話需要換驅動包-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.35</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
-----------------------------------------------------------------------------------------------------------------------
2.準備流程文件，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">
<process id="Expense" name="ExpenseProcess" isExecutable="true">
<documentation>報銷流程</documentation>
<startEvent id="start" name="開始"></startEvent>
<userTask id="fillTask" name="出差報銷" flowable:assignee="${taskUser}">
<extensionElements>
<modeler:initiator-can-complete xmlns:modeler="http://flowable.org/modeler">
<![CDATA[false]]></modeler:initiator-can-complete>
</extensionElements>
</userTask>
<exclusiveGateway id="judgeTask"></exclusiveGateway>
<userTask id="directorTak" name="經理審批">
<extensionElements>
<flowable:taskListener event="create"
class="com.springboot.demo.handler.ManagerTaskHandler"></flowable:taskListener>
</extensionElements>
</userTask>
<userTask id="bossTask" name="老板審批">
<extensionElements>
<flowable:taskListener event="create"
class="com.springboot.demo.handler.BossTaskHandler"></flowable:taskListener>
</extensionElements>
</userTask>
<endEvent id="end" name="結束"></endEvent>
<sequenceFlow id="directorNotPassFlow" name="駁回" sourceRef="directorTak" targetRef="fillTask">
<conditionExpression xsi:type="tFormalExpression"><![CDATA[${outcome=='駁回'}]]></conditionExpression>
</sequenceFlow>
<sequenceFlow id="bossNotPassFlow" name="駁回" sourceRef="bossTask" targetRef="fillTask">
<conditionExpression xsi:type="tFormalExpression"><![CDATA[${outcome=='駁回'}]]></conditionExpression>
</sequenceFlow>
<sequenceFlow id="flow1" sourceRef="start" targetRef="fillTask"></sequenceFlow>
<sequenceFlow id="flow2" sourceRef="fillTask" targetRef="judgeTask"></sequenceFlow>
<sequenceFlow id="judgeMore" name="大于500元" sourceRef="judgeTask" targetRef="bossTask">
<conditionExpression xsi:type="tFormalExpression"><![CDATA[${money > 500}]]></conditionExpression>
</sequenceFlow>
<sequenceFlow id="bossPassFlow" name="通過" sourceRef="bossTask" targetRef="end">
<conditionExpression xsi:type="tFormalExpression"><![CDATA[${outcome=='通過'}]]></conditionExpression>
</sequenceFlow>
<sequenceFlow id="directorPassFlow" name="通過" sourceRef="directorTak" targetRef="end">
<conditionExpression xsi:type="tFormalExpression"><![CDATA[${outcome=='通過'}]]></conditionExpression>
</sequenceFlow>
<sequenceFlow id="judgeLess" name="小于500元" sourceRef="judgeTask" targetRef="directorTak">
<conditionExpression xsi:type="tFormalExpression"><![CDATA[${money <= 500}]]></conditionExpression>
</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.準備SpringBoot屬性文件，application.properties內容如下
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.編寫流程中用到的處理類
包名：com.springboot.demo.handler
類名：ManagerTaskHandler
類內容如下
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("經理");
}
}
包名：com.springboot.demo.handler
類名：BossTaskHandler
類內容如下
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.編寫控制器
包名：com.springboot.demo.controller
類名：ExpenseController
類內容如下：
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;
/**
* 生成當前流程圖
* @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());
}
}
/**
* 審核-拒絕
* @param taskId
* @return
*/
@RequestMapping(value = "reject")
@ResponseBody
public String reject(String taskId){
HashMap<String,Object> map = new HashMap<>();
map.put("outcome","駁回");
taskService.complete(taskId,map);
return "reject";
}
/**
* 審核-通過
* @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","通過");
taskService.complete(taskId,map);
return "processed ok";
}
/**
* 獲取審批列表
* @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;
}
/**
* 開始報銷流程
* @param userId 用戶ID
* @param money 報銷金額
* @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為"+processInstance.getId();
}
}
-----------------------------------------------------------------------------------------------------------------------
6.啟動服務，沒有報錯即可
7.分別訪問如下地址進行流程的執行操作
1）提交報銷申請
請求地址：http://localhost:8082/expense/add?userId=4&money=2000
返回結果：提交成功，流程ID為5043
說明：
http://localhost本地服務
8082表示本地服務對外提供訪問端口
expense表示控制器名稱
add表示控制器中的方法，該方法用于開始報銷流程，也就是提交報銷申請
userId=4表示用戶ID為4
money=2000表示報銷金額為2000
2）查看待辦列表
請求地址：http://localhost:8082/expense/list?userId=4
返回結果：Task[id=5050, name=出差報銷]
說明：
http://localhost本地服務
8082表示本地服務對外提供訪問端口
expense表示控制器名稱
list表示獲取待辦列表方法名
userId=4表示用戶ID為4,獲取用戶ID為4的待辦事項列表
3）對報銷申請進行審核，且審核結果為通過
請求地址：http://localhost:8082/expense/apply?taskId=5050
返回結果：processed ok
說明：
http://localhost本地服務
8082表示本地服務對外提供訪問端口
expense表示控制器名稱
apply表示審核通過方法
taskId表示任務ID，些任務ID是查看待辦列表中的某個任務ID
4）生成當前任務狀態圖
請求地址：http://localhost:8082/expense/processDiagram?processId=5043
返回結果：在瀏覽器中一張圖片
說明：
http://localhost本地服務
8082表示本地服務對外提供訪問端口
expense表示控制器名稱
processDiagram表示生成圖片方法
processId=5043表示流程ID，該流程ID是第1步提交報銷申請時返回的流程ID
感謝你能夠認真閱讀完這篇文章，希望小編分享的“SpringBoot2.0.1與flowable工作流引擎如何整合”這篇文章對大家有幫助，同時也希望大家多多支持億速云，關注億速云行業資訊頻道，更多相關知識等著你來學習!
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