Vue+LogicFlow+Flowable 前端+后端实现工作流

一、实现效果

前端使用LogicFlow框架绘制流程图，可以导出为xml工作流标准格式数据，通过xml文件传递到后端进行Flowable流程注册，并保存到数据库中。

二、BPM传输文件格式（.xml）

如需添加承办人的话，需要在LogicFlow导出文件的基础上手动添加xmlns:flowable="http://flowable.org/bpmn"flowable插件，不然后台无法识别flowable:candidateUsers。

<bpmn:definitions xmlns:flowable="http://flowable.org/bpmn" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:bpmn="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" xmlns:di="http://www.omg.org/spec/DD/20100524/DI" id="Definitions_5588fe5_6" targetNamespace="http://logic-flow.org" exporter="logicflow" exporterVersion="1.2.0"><bpmn:process isExecutable="true" id="Process_2a9c067_6"><bpmn:startEvent id="Event_14efe0e" name="开始节点" flowable:candidateUsers="admin,admin1,admin2"><bpmn:outgoing>Flow_a3e7d0c</bpmn:outgoing></bpmn:startEvent><bpmn:userTask id="Activity_602107f" name="普通节点" flowable:candidateUsers="uesr,uesr1,uesr2"><bpmn:incoming>Flow_a3e7d0c</bpmn:incoming><bpmn:outgoing>Flow_3f9a386</bpmn:outgoing></bpmn:userTask><bpmn:endEvent id="Event_49a11b4" name="结束节点"><bpmn:incoming>Flow_3f9a386</bpmn:incoming></bpmn:endEvent><bpmn:sequenceFlow id="Flow_a3e7d0c" sourceRef="Event_14efe0e" targetRef="Activity_602107f"/><bpmn:sequenceFlow id="Flow_3f9a386" sourceRef="Activity_602107f" targetRef="Event_49a11b4"/></bpmn:process><bpmndi:BPMNDiagram id="BPMNDiagram_1"><bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="Process_2a9c067"><bpmndi:BPMNEdge id="Flow_a3e7d0c_di" bpmnElement="Flow_a3e7d0c"><di:waypoint x="343" y="164"/><di:waypoint x="448" y="164"/></bpmndi:BPMNEdge><bpmndi:BPMNEdge id="Flow_3f9a386_di" bpmnElement="Flow_3f9a386"><di:waypoint x="548" y="164"/><di:waypoint x="665" y="164"/></bpmndi:BPMNEdge><bpmndi:BPMNShape id="Event_14efe0e_di" bpmnElement="Event_14efe0e"><dc:Bounds x="305" y="144" width="40" height="40"/><bpmndi:BPMNLabel><dc:Bounds x="305" y="197" width="40" height="14"/></bpmndi:BPMNLabel></bpmndi:BPMNShape><bpmndi:BPMNShape id="Activity_602107f_di" bpmnElement="Activity_602107f"><dc:Bounds x="448" y="124" width="100" height="80"/><bpmndi:BPMNLabel><dc:Bounds x="478" y="157" width="40" height="14"/></bpmndi:BPMNLabel></bpmndi:BPMNShape><bpmndi:BPMNShape id="Event_49a11b4_di" bpmnElement="Event_49a11b4"><dc:Bounds x="663" y="144" width="40" height="40"/><bpmndi:BPMNLabel><dc:Bounds x="663" y="197" width="40" height="14"/></bpmndi:BPMNLabel></bpmndi:BPMNShape></bpmndi:BPMNPlane></bpmndi:BPMNDiagram></bpmn:definitions>

三、前端框架（LogicFlow）

1. LogicFlow.vue

<template><div class="container" ref="container"></div><BpmnNodePanel :lf="lf"></BpmnNodePanel><div class="node-item"><div class="node-item-icon bpmn-save" @click="saveNode()"></div><span class="node-label">保存</span><div class="node-item-icon bpmn-save" @click="cleanNode()"></div><span class="node-label">清空</span><div class="node-item-icon bpmn-save" @click="reloadNode()"></div><span class="node-label">加载</span><div class="node-item-icon bpmn-save" @click="deleteNode()"></div><span class="node-label">删除</span><div class="node-item-icon bpmn-save" @click="getList()"></div><span class="node-label">获取定义流程</span><div class="node-item-icon bpmn-save" @click="flowRun()"></div><span class="node-label">工作流实例</span></div></template><script>import LogicFlow from '@logicflow/core'import '@logicflow/core/dist/style/index.css'import { BpmnElement, BpmnXmlAdapter, Menu } from '@logicflow/extension'import '@logicflow/extension/lib/style/index.css'import BpmnNodePanel from "./BpmnNodePanel.vue"import { addFlow, infoFlow, deleteFlow, getDeployList, flowRun } from "../api/server"import { addFlowable, addProp, getTypeNameByTag, setValueByTag } from '../utils/xml'export default {data() {return {lf: void 0,xmlData: void 0,definitionsId: void 0,processId: void 0,}},components: { BpmnNodePanel },created() {},mounted() {this.loadFlow()},methods: {loadFlow() {LogicFlow.use(BpmnElement)LogicFlow.use(BpmnXmlAdapter)LogicFlow.use(Menu)//初始化this.lf = new LogicFlow({container: this.$refs.container,stopScrollGraph: true,stopZoomGraph: true,grid: false,keyboard: {enabled: true,},});// this.lf.setDefaultEdgeType('bezier')this.lf.render();},// 保存saveNode() { // 获取xml数据this.xmlData = this.lf.getGraphData();// 添加flowable扩展this.xmlData = addFlowable(this.xmlData)// 判断是否为文档编辑if (this.processId) {// 修改为原流程idthis.xmlData = setValueByTag(this.xmlData, 'bpmn:definitions', 'id', this.definitionsId)this.xmlData = setValueByTag(this.xmlData, 'bpmn:process', 'id', this.processId)} else { // 添加节点用户 个人assignee候选人candidateUsers 候选组候选人candidateGroups 动态设置${employee}// this.xmlData = addProp(this.xmlData, 'bpmn:startEvent', 'flowable:candidateUsers', 'zhao,qian,sun')this.xmlData = addProp(this.xmlData, 'bpmn:userTask', 'flowable:candidateUsers', 'li,zhou,wang')}const data = {name: '测试流程',xml: this.xmlData}// 请求后台接口（添加工作流）addFlow(data).then(res => {console.log(res)}).catch(err => {console.log(err)})},// 清除cleanNode() {this.lf.clearData()},// 重新加载reloadNode() {// 查询数据const data = {id: 'ff292b5d-4193-11ee-8e48-502b73dc5fce',name: '测试流程'}infoFlow(data).then(res => {if (res.result) {// 获取processIdconst definitionsNodes = getTypeNameByTag(res.result, 'bpmn:definitions')const processNodes = getTypeNameByTag(res.result, 'bpmn:process')this.definitionsId = definitionsNodes.idthis.processId = processNodes.id// 渲染数据this.lf.render(res.result);}console.log(res)}).catch(err => {console.log(err)})},// 删除数据deleteNode() { // 查询数据const data = {id: ''}deleteFlow(data).then(res => {console.log(res)}).catch(err => {console.log(err)})}, // 获取数据getList() { getDeployList().then(res => {console.log(res)}).catch(err => {console.log(err)})},// 流程实例flowRun() { flowRun().then(res => {console.log(res)}).catch(err => {console.log(err)})},},}</script><style scoped>.container{width: 100%;height: 100%;}.node-item {position: absolute;top: 350px;left: 10px;width: 50px;padding: 10px;background-color: white;box-shadow: 0 0 10px 1px rgb(228, 224, 219);border-radius: 6px;text-align: center;z-index: 101;}.node-item-icon {width: 30px;height: 30px;margin-left: 10px;background-size: cover;}.node-label {font-size: 12px;margin-top: 5px;user-select: none;}.bpmn-save {background: url(data:image/png;base64,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)center center no-repeat;cursor: grab;}</style>

2.BpmnNodePanel.vue

<template><div class="node-panel"><!-- <div class="node-item" @mousedown="openSelection()"><div class="node-item-icon bpmn-selection"></div><span class="node-label">选区</span></div> --><div class="node-item" @mousedown="addStartNode()"><div class="node-item-icon bpmn-start"></div><span class="node-label">开始节点</span></div><div class="node-item" @mousedown="addUserTask()"><div class="node-item-icon bpmn-user"></div><span class="node-label">普通节点</span></div><!-- <div class="node-item" @mousedown="addServiceTask()"><div class="node-item-icon bpmn-service"></div><span class="node-label">系统</span></div> --><!-- <div class="node-item" @mousedown="addGateWay()"><div class="node-item-icon bpmn-gateway"></div><span class="node-label">判断</span></div> --><div class="node-item" @mousedown="addEndNode()"><div class="node-item-icon bpmn-end"></div><span class="node-label">结束节点</span></div></div></template><script>import LogicFlow from '@logicflow/core';export default {name: "BpmnNodePanel",data() {return {}},props: {lf: Object,},mounted() {//选区框选使用的let lf = this.$props.lflf &&lf.on("selection:selected", () => {lf.updateEditConfig({stopMoveGraph: false,});});},methods: {openSelection() {(this.$props.lf).updateEditConfig({stopMoveGraph: true});},addStartNode() {(this.$props.lf).dnd.startDrag({type: "bpmn:startEvent",text: "开始节点",});},addUserTask() {(this.$props.lf).dnd.startDrag({type: "bpmn:userTask",text: "普通节点", });},addServiceTask() {(this.$props.lf).dnd.startDrag({type: "bpmn:serviceTask",text: "系统",});},addGateWay() {(this.$props.lf).dnd.startDrag({type: "bpmn:exclusiveGateway",text: "判断",});},addEndNode() {(this.$props.lf).dnd.startDrag({type: "bpmn:endEvent",text: "结束节点",});},},};</script><style>.node-panel {position: absolute;top: 100px;left: 10px;width: 50px;padding: 10px;background-color: white;box-shadow: 0 0 10px 1px rgb(228, 224, 219);border-radius: 6px;text-align: center;z-index: 101;}.node-item {margin-bottom: 10px;}.node-item-icon {width: 30px;height: 30px;margin-left: 10px;background-size: cover;}.node-label {font-size: 12px;margin-top: 5px;user-select: none;}.bpmn-selection {background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAAH6ji2bAAAABGdBTUEAALGPC/xhBQAAAOVJREFUOBGtVMENwzAIjKP++2026ETdpv10iy7WFbqFyyW6GBywLCv5gI+Dw2Bluj1znuSjhb99Gkn6QILDY2imo60p8nsnc9bEo3+QJ+AKHfMdZHnl78wyTnyHZD53Zzx73MRSgYvnqgCUHj6gwdck7Zsp1VOrz0Uz8NbKunzAW+Gu4fYW28bUYutYlzSa7B84Fh7d1kjLwhcSdYAYrdkMQVpsBr5XgDGuXwQfQr0y9zwLda+DUYXLaGKdd2ZTtvbolaO87pdo24hP7ov16N0zArH1ur3iwJpXxm+v7oAJNR4JEP8DoAuSFEkYH7cAAAAASUVORK5CYII=)center center no-repeat;cursor: grab;}.bpmn-start {background: url(data:image/png;base64,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)center center no-repeat;cursor: grab;}.bpmn-end {background: url(data:image/png;base64,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)center center no-repeat;cursor: grab;}.bpmn-user {background: url(data:image/png;base64,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)center center no-repeat;cursor: grab;}.bpmn-gateway {background: url(data:image/png;base64,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)center center no-repeat;cursor: grab;}.bpmn-service {background: 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3.xml.js

/** * 添加flowable扩展 * @param {*} xmlstr* @returns*/export function addFlowable(xmlstr) {const part1 = xmlstr.slice(0, 43); // 从开头到指定位置之前的部分const part2 = xmlstr.slice(43); // 从指定位置到末尾的部分const newString = part1 + 'xmlns:flowable="http://flowable.org/bpmn" ' + part2; // 拼接成新的字符串return newString}/** * 添加属性信息 * @param {*} xmlstr* @returns*/export function addProp(xmlstr, Elements, key, value) {// 创建一个XML文档对象const parser = new DOMParser();const xmlDoc = parser.parseFromString(xmlstr, 'application/xml');// 查找元素const userTaskElement = xmlDoc.getElementsByTagName(Elements);for (let i = 0; i < userTaskElement.length; i++) {if (!userTaskElement[i].attributes[key]) {userTaskElement[i].setAttribute(key, value);}}// 将修改后的XML文档转换回字符串const xmlSerializer = new XMLSerializer();const modifiedXmlString = xmlSerializer.serializeToString(xmlDoc);return modifiedXmlString;}/** *根据标签名称返回xml内容，标签名必须唯一，若不满足，修改方法 * @param {*} xmlstr xml字符串 * @param {element} tagName 标签名称，如 */export function getTypeNameByTag(xmlstr, tagName) {const parser = new DOMParser()const xmlDoc = parser.parseFromString(xmlstr, 'application/xml')const nameNodes = xmlDoc.getElementsByTagName(tagName)[0]if (nameNodes) {return nameNodes} else {return false}}/** * 根据标签名称修改内容 * @param {*} xmlstr xml字符串 * @param {element} tagName 标签名称，如 * @param {*} key 修改对应key * @param {*} value 修改值value * @returns*/export function setValueByTag(xmlstr, tagName, key, value) {// 字符串转xmlconst parser = new DOMParser()const xmlDoc = parser.parseFromString(xmlstr, 'application/xml')const nameNodes = xmlDoc.getElementsByTagName(tagName)[0]nameNodes.setAttribute(key, value);// xml转字符串const s = new XMLSerializer();const xml = s.serializeToString(xmlDoc);return xml;}

4.server.js

import request from '../utils/request';const url = 'http://localhost:8088'/** * 添加（编辑）工作流 * @param {*} data * @returns */export function addFlow(data) {return request({url: url + '/flow/addFlow',method: 'post',data,});}/** * 查询工作流 * @param {*} data * @returns */export function infoFlow(data) {return request({url: url + '/flow/infoFlow',method: 'post',data,});}/** * 删除工作流 * @param {*} data * @returns */export function deleteFlow(data) {return request({url: url + '/flow/deleteFlow',method: 'post',data,});}/** * 获取工作流定义 * @param {*} data * @returns */export function getDeployList(data) {return request({url: url + '/flow/getDeployList',method: 'post',data,});}/** * 工作流实例 * @param {*} data * @returns */export function flowRun(data) {return request({url: url + '/flow/deploymentRun',method: 'post',data,});}

5.request.js

import axios from 'axios';const service = axios.create({});service.defaults.timeout = 20000;// 请求拦截器service.interceptors.request.use((config) => {return config;},(error) => {console.log(error);return Promise.reject(error);});// 响应拦截器service.interceptors.response.use((response) => {return response.data;},(error) => {return Promise.reject(error);});export default service;

四、后端代码（Flowable）

1.FlowController .java

@RestControllerpublic class FlowController {@AutowiredFlowService flowService;// 工作流部署（添加、编辑）@CrossOrigin@PostMapping("/flow/addFlow")public Result addFlow(@RequestBody Map<String,String> map){return flowService.AddFlow(map.get("id"), map.get("name"), map.get("xml"), map.get("key"));}// 工作流返回@CrossOrigin@PostMapping("/flow/infoFlow")public Result infoFlow(@RequestBody Map<String,String> map) {return flowService.InfoFlow(map.get("id"), map.get("name"));}// 工作流删除@CrossOrigin@PostMapping("/flow/deleteFlow")public Result deleteFlow(@RequestBody Map<String,String> map) {return flowService.DeleteFlow(map.get("id"));}// 工作流查询@CrossOrigin@PostMapping("/flow/getDeployList")public Result getDeployList() {return flowService.GetDeployList();}// 流程实例@CrossOrigin@PostMapping("/flow/deploymentRun")public Result deploymentRun(@RequestBody Map<String,String> map) {return flowService.DeploymentRun(map.get("userId"), map.get("key"));}// 流程查询@CrossOrigin@PostMapping("/flow/infoTask")public Result InfoTask(@RequestBody Map<String,String> map) {return flowService.InfoTask(map.get("userId"));}// 流程执行@CrossOrigin@PostMapping("/flow/makeTask")public Result MakeTask(@RequestBody Map<String,String> map) {return flowService.MakeTask(map.get("userId"));}// 流程历史@CrossOrigin@PostMapping("/flow/taskHistory")public Result TaskHistory() {return flowService.TaskHistory();}// 测试@CrossOrigin@PostMapping("/test")public Result test(@RequestBody AskForLeaveVO test) {return flowService.test(test);}}

2.FlowService .java

@Servicepublic class FlowService {@AutowiredProcessEngine processEngine;@AutowiredFlowTreeService flowTreeService;/** * 工作流部署（添加、编辑） * @param name 名称 * @param xml xml * @return */@Transactionalpublic Result AddFlow(String id, String name, String xml, String key){try {RepositoryService repositoryService = processEngine.getRepositoryService();// 创建新流程Deployment deployment = repositoryService.createDeployment().addString(name + ".bpmn", xml).deploy();// 将工作流信息保存到流程树表flowTreeService.AutoSave(id, deployment.getId(), key);System.out.println("id : " + id);System.out.println("添加id : " + deployment.getId());System.out.println("添加key : " + key);return Result.ok("添加成功", deployment.getId());} catch (Exception e) {e.printStackTrace();return Result.error("添加失败");}}/** * 工作流返回（返回xml） * @param id 查询id * @param name 名称 * @return */@Transactionalpublic Result InfoFlow(String id, String name) {try {// 流程查询RepositoryService repositoryService = processEngine.getRepositoryService();InputStream resourceAsStream = repositoryService.getResourceAsStream(id, name + ".bpmn");// Java流转StringString resultXml = new BufferedReader(new InputStreamReader(resourceAsStream,"utf-8")).lines().collect(Collectors.joining(System.lineSeparator()));return Result.ok("查询成功", resultXml);} catch (Exception e) {e.printStackTrace();}return Result.error("查询失败");}/** * 工作流删除 * @param id * @return */@TransactionalpublicResult DeleteFlow(String id){try {RepositoryService repositoryService = processEngine.getRepositoryService();// 设置为TRUE 级联删除流程定义，及时流程有实例启动，也可以删除，设置为false 非级联删除操作。repositoryService.deleteDeployment(id);System.out.println("删除id : " + id);return Result.ok("删除成功", id);} catch (Exception e) {e.printStackTrace();return Result.error("删除失败");}}/** * 工作流部署列表查询 * @return */@Transactionalpublic Result GetDeployList() {try {RepositoryService repositoryService = processEngine.getRepositoryService();List<ProcessDefinition> list = repositoryService.createProcessDefinitionQuery().list();System.out.println("list : " + list);return Result.ok("查询成功");} catch (Exception e) {e.printStackTrace();return Result.error("查询失败");}}/** * 启动流程实例 * @param userId 发起人 * @param key 流程key * @return */@Transactionalpublic Result DeploymentRun(String userId, String key){try {//Map variables = new HashMap();//variables.put("employee", userId);RuntimeService runtimeService = processEngine.getRuntimeService();ProcessInstance processInstance = runtimeService.startProcessInstanceByKey(key);//获取流程实例的相关信息System.out.println("流程定义的id = " + processInstance.getProcessDefinitionId());System.out.println("流程实例的id = " + processInstance.getId());return Result.ok("成功", "流程实例id = " + processInstance.getId());} catch (Exception e) {e.printStackTrace();return Result.error("失败");}}/** * 查询流程任务 * @param userId * @return */@Transactionalpublic Result InfoTask(String userId){try {TaskService taskService = processEngine.getTaskService();// 查询多人任务List<Task> taskList = taskService.createTaskQuery().taskCandidateUser(userId).list();System.out.println("taskList" + taskList);//遍历任务列表for(Task task:taskList){System.out.println("流程定义id = " + task.getProcessDefinitionId());System.out.println("流程实例id = " + task.getProcessInstanceId());System.out.println("任务id = " + task.getId());System.out.println("任务名称 = " + task.getName());}return Result.ok("成功");} catch (Exception e) {e.printStackTrace();return Result.error("失败");}}/** * 执行流程任务 * @param userId * @return */@Transactionalpublic Result MakeTask(String userId){try {TaskService taskService = processEngine.getTaskService();// 查询个人任务List<Task> list = taskService.createTaskQuery().taskCandidateUser(userId).list();System.out.println("taskList" + list);for (Task task : list) {taskService.complete(task.getId());System.out.println("task.getId()" + task.getId());}return Result.ok("成功");} catch (Exception e) {e.printStackTrace();return Result.error("失败");}}/** * 查询历史流程 * @param * @return */@Transactionalpublic Result TaskHistory(){try {HistoryService historyService = processEngine.getHistoryService();List<HistoricActivityInstance> activities = historyService.createHistoricActivityInstanceQuery()// .processInstanceId("12501") // 特定的实例.finished() // 完成的// .orderByHistoricActivityInstanceEndTime().asc() // 根据实例完成时间升序排列.list();for (HistoricActivityInstance activity : activities) {System.out.println("id:" + activity.getActivityId() + "任务名：" + activity.getActivityName() + "类型：" + activity.getActivityType() + "持续时间:" + activity.getDurationInMillis());}return Result.ok("成功");} catch (Exception e) {e.printStackTrace();return Result.error("失败");}}}