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1、安装bpmn.js
- npm install bpmn-js@7.3.1 // 我安装的版本是7.3.1
-
- npm install bpmn-js-properties-panel@0.37.2
-
- npm install bpmn-moddle@7.1.3
-
- npm install --save camunda-bpmn-moddle
2、配置axios,在main.js中引入axios
- import axios from 'axios'
-
- Vue.prototype.$http = axios
3、bpmn汉化,创建defaultXmlStr.js(是初始化的xml文件)、customTranslate.js和translations.js文件,可从网上下载,也可自行新建,目录如下
defaultXmlStr.js内容如下,若将 <startEvent id="StartEvent" name="开始" />去掉,则初始化的页面是空白页
- export var defaultXmlStr = `xml <?xml version="1.0" encoding="UTF-8"?>
- <definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:camunda="http://camunda.org/schema/1.0/bpmn" id="sid-38422fae-e03e-43a3-bef4-bd33b32041b2" targetNamespace="http://bpmn.io/bpmn" exporter="bpmn-js (https://demo.bpmn.io)" exporterVersion="5.1.2">
- <process id="Process" name="默认模板" isExecutable="true" camunda:versionTag="0.0.1">
- <startEvent id="StartEvent" name="开始" />
- </process>
- <bpmndi:BPMNDiagram id="BpmnDiagram_1">
- <bpmndi:BPMNPlane id="BpmnPlane_1" bpmnElement="Process">
- <bpmndi:BPMNShape id="StartEvent_1y45yut_di" bpmnElement="StartEvent">
- <omgdc:Bounds x="152" y="102" width="36" height="36" />
- <bpmndi:BPMNLabel>
- <omgdc:Bounds x="160" y="145" width="22" height="14" />
- </bpmndi:BPMNLabel>
- </bpmndi:BPMNShape>
- </bpmndi:BPMNPlane>
- </bpmndi:BPMNDiagram>
- </definitions>`
translations.js内容如下:
- /**
- * This is a sample file that should be replaced with the actual translation.
- *
- * Checkout https://github.com/bpmn-io/bpmn-js-i18n for a list of available
- * translations and labels to translate.
- */
- export default {
- 'Activate the global connect tool': '激活全局连接工具',
- 'Append {type}': '添加 {type}',
- 'Add Lane above': '在上面添加道',
- 'Divide into two Lanes': '分割成两个道',
- 'Divide into three Lanes': '分割成三个道',
- 'Add Lane below': '在下面添加道',
- 'Append compensation activity': '追加补偿活动',
- 'Change type': '修改类型',
- 'Connect using Association': '使用关联连接',
- 'Connect using Sequence/MessageFlow or Association': '使用顺序/消息流或者关联连接',
- 'Connect using DataInputAssociation': '使用数据输入关联连接',
- Remove: '移除',
- 'Activate the hand tool': '激活抓手工具',
- 'Activate the lasso tool': '激活套索工具',
- 'Activate the create/remove space tool': '激活创建/删除空间工具',
- 'Create expanded SubProcess': '创建扩展子过程',
- 'Create IntermediateThrowEvent/BoundaryEvent': '创建中间抛出事件/边界事件',
- 'Create Pool/Participant': '创建池/参与者',
- 'Parallel Multi Instance': '并行多重事件',
- 'Sequential Multi Instance': '时序多重事件',
- DataObjectReference: '数据对象参考',
- DataStoreReference: '数据存储参考',
- Loop: '循环',
- 'Ad-hoc': '即席',
- 'Create {type}': '创建 {type}',
- Task: '任务',
- 'Send Task': '发送任务',
- 'Receive Task': '接收任务',
- 'User Task': '用户任务',
- 'Manual Task': '手工任务',
- 'Business Rule Task': '业务规则任务',
- 'Service Task': '服务任务',
- 'Script Task': '脚本任务',
- 'Call Activity': '调用活动',
- 'Sub Process (collapsed)': '子流程(折叠的)',
- 'Sub Process (expanded)': '子流程(展开的)',
- 'Start Event': '开始事件',
- StartEvent: '开始事件',
- 'Intermediate Throw Event': '中间事件',
- 'End Event': '结束事件',
- EndEvent: '结束事件',
- 'Create Gateway': '创建网关',
- 'Create Intermediate/Boundary Event': '创建中间/边界事件',
- 'Message Start Event': '消息开始事件',
- 'Timer Start Event': '定时开始事件',
- 'Conditional Start Event': '条件开始事件',
- 'Signal Start Event': '信号开始事件',
- 'Error Start Event': '错误开始事件',
- 'Escalation Start Event': '升级开始事件',
- 'Compensation Start Event': '补偿开始事件',
- 'Message Start Event (non-interrupting)': '消息开始事件(非中断)',
- 'Timer Start Event (non-interrupting)': '定时开始事件(非中断)',
- 'Conditional Start Event (non-interrupting)': '条件开始事件(非中断)',
- 'Signal Start Event (non-interrupting)': '信号开始事件(非中断)',
- 'Escalation Start Event (non-interrupting)': '升级开始事件(非中断)',
- 'Message Intermediate Catch Event': '消息中间捕获事件',
- 'Message Intermediate Throw Event': '消息中间抛出事件',
- 'Timer Intermediate Catch Event': '定时中间捕获事件',
- 'Escalation Intermediate Throw Event': '升级中间抛出事件',
- 'Conditional Intermediate Catch Event': '条件中间捕获事件',
- 'Link Intermediate Catch Event': '链接中间捕获事件',
- 'Link Intermediate Throw Event': '链接中间抛出事件',
- 'Compensation Intermediate Throw Event': '补偿中间抛出事件',
- 'Signal Intermediate Catch Event': '信号中间捕获事件',
- 'Signal Intermediate Throw Event': '信号中间抛出事件',
- 'Message End Event': '消息结束事件',
- 'Escalation End Event': '定时结束事件',
- 'Error End Event': '错误结束事件',
- 'Cancel End Event': '取消结束事件',
- 'Compensation End Event': '补偿结束事件',
- 'Signal End Event': '信号结束事件',
- 'Terminate End Event': '终止结束事件',
- 'Message Boundary Event': '消息边界事件',
- 'Message Boundary Event (non-interrupting)': '消息边界事件(非中断)',
- 'Timer Boundary Event': '定时边界事件',
- 'Timer Boundary Event (non-interrupting)': '定时边界事件(非中断)',
- 'Escalation Boundary Event': '升级边界事件',
- 'Escalation Boundary Event (non-interrupting)': '升级边界事件(非中断)',
- 'Conditional Boundary Event': '条件边界事件',
- 'Conditional Boundary Event (non-interrupting)': '条件边界事件(非中断)',
- 'Error Boundary Event': '错误边界事件',
- 'Cancel Boundary Event': '取消边界事件',
- 'Signal Boundary Event': '信号边界事件',
- 'Signal Boundary Event (non-interrupting)': '信号边界事件(非中断)',
- 'Compensation Boundary Event': '补偿边界事件',
- 'Exclusive Gateway': '互斥网关',
- 'Parallel Gateway': '并行网关',
- 'Inclusive Gateway': '相容网关',
- 'Complex Gateway': '复杂网关',
- 'Event based Gateway': '事件网关',
- Transaction: '转运',
- 'Sub Process': '子流程',
- 'Event Sub Process': '事件子流程',
- 'Collapsed Pool': '折叠池',
- 'Expanded Pool': '展开池',
- // Errors
- 'no parent for {element} in {parent}': '在{parent}里,{element}没有父类',
- 'no shape type specified': '没有指定的形状类型',
- 'flow elements must be children of pools/participants': '流元素必须是池/参与者的子类',
- 'out of bounds release': '越界释放',
- 'more than {count} child lanes': '子道大于{count} ',
- 'element required': '元素不能为空',
- 'diagram not part of bpmn:Definitions': '流程图不符合bpmn规范',
- 'no diagram to display': '没有可展示的流程图',
- 'no process or collaboration to display': '没有可展示的流程/协作',
- 'element {element} referenced by {referenced}#{property} not yet drawn': '由{referenced}#{property}引用的{element}元素仍未绘制',
- 'already rendered {element}': '{element} 已被渲染',
- 'failed to import {element}': '导入{element}失败',
- // 属性面板的参数
- Id: 'KEY',
- Name: '名称',
- General: '常规',
- Details: '详情',
- 'Message Name': '消息名称',
- Message: '消息',
- Initiator: '创建者',
- 'Asynchronous Continuations': '持续异步',
- 'Asynchronous Before': '异步前',
- 'Asynchronous After': '异步后',
- 'Job Configuration': '工作配置',
- Exclusive: '排除',
- 'Job Priority': '工作优先级',
- 'Retry Time Cycle': '重试时间周期',
- Documentation: '文档',
- 'Element Documentation': '元素文档',
- 'History Configuration': '历史配置',
- 'History Time To Live': '历史的生存时间',
- Forms: '表单',
- 'Form Key': '表单key',
- 'Form Fields': '表单字段',
- 'Business Key': '业务key',
- 'Form Field': '表单字段',
- ID: '编号',
- Type: '类型',
- Label: '名称',
- 'Default Value': '默认值',
- Validation: '校验',
- 'Add Constraint': '添加约束',
- Config: '配置',
- Properties: '属性',
- 'Add Property': '添加属性',
- Value: '值',
- Listeners: '监听器',
- 'Execution Listener': '执行监听',
- 'Event Type': '事件类型',
- 'Listener Type': '监听器类型',
- 'Java Class': 'Java类',
- Expression: '表达式',
- 'Must provide a value': '必须提供一个值',
- 'Delegate Expression': '代理表达式',
- Script: '脚本',
- 'Script Format': '脚本格式',
- 'Script Type': '脚本类型',
- 'Inline Script': '内联脚本',
- 'External Script': '外部脚本',
- Resource: '资源',
- 'Field Injection': '字段注入',
- Extensions: '扩展',
- 'Input/Output': '输入/输出',
- 'Input Parameters': '输入参数',
- 'Output Parameters': '输出参数',
- Parameters: '参数',
- 'Output Parameter': '输出参数',
- 'Timer Definition Type': '定时器定义类型',
- 'Timer Definition': '定时器定义',
- Date: '日期',
- Duration: '持续',
- Cycle: '循环',
- Signal: '信号',
- 'Signal Name': '信号名称',
- Escalation: '升级',
- Error: '错误',
- 'Link Name': '链接名称',
- Condition: '条件名称',
- 'Variable Name': '变量名称',
- 'Variable Event': '变量事件',
- 'Specify more than one variable change event as a comma separated list.': '多个变量事件以逗号隔开',
- 'Wait for Completion': '等待完成',
- 'Activity Ref': '活动参考',
- 'Version Tag': '版本标签',
- Executable: '可执行文件',
- 'External Task Configuration': '扩展任务配置',
- 'Task Priority': '任务优先级',
- External: '外部',
- Connector: '连接器',
- 'Must configure Connector': '必须配置连接器',
- 'Connector Id': '连接器编号',
- Implementation: '实现方式',
- 'Field Injections': '字段注入',
- Fields: '字段',
- 'Result Variable': '结果变量',
- Topic: '主题',
- 'Configure Connector': '配置连接器',
- 'Input Parameter': '输入参数',
- Assignee: '代理人',
- 'Candidate Users': '候选用户',
- 'Candidate Groups': '候选组',
- 'Due Date': '到期时间',
- 'Follow Up Date': '跟踪日期',
- Priority: '优先级',
- Variables: '变量',
- 'This maps to the process definition key.': '同时会映射为流程定义Key',
- 'Element must have an unique id.': '元素必须有唯一的Key',
- 'Id must be a valid QName.': 'Key不合法',
- 'Candidate Starter Configuration': '候选人起动器配置',
- 'Candidate Starter Groups': '候选人起动器组',
- 'Specify more than one group as a comma separated list.': '多个组使用英文逗号隔开',
- 'Candidate Starter Users': '允许发起流程的用户ID',
- 'Specify more than one user as a comma separated list.': '多个用户使用英文逗号隔开',
- 'Tasklist Configuration': '任务列表配置',
- Startable: '可启动',
- 'Available process variables, identified in the diagram.': '在流程图中指定的变量',
- 'No variables found.': '没有发现变量',
- 'This maps to the task definition key.': '映射到任务定义键',
- 'No variables defined.': '没有定义变量',
- 'The follow up date as an EL expression (e.g. ${someDate} or an ISO date (e.g. 2015-06-26T09:54:00)':
- '跟踪日期必须符合EL表达式,如: ${someDate} ,或者一个ISO标准日期,如:2015-06-26T09:54:00',
- 'The due date as an EL expression (e.g. ${someDate} or an ISO date (e.g. 2015-06-26T09:54:00)':
- '跟踪日期必须符合EL表达式,如: ${someDate} ,或者一个ISO标准日期,如:2015-06-26T09:54:00',
- }
customTranslate.js内容如下:
- import translations from './translations'
- export default function customTranslate(template, replacements) {
- replacements = replacements || {}
- // Translate
- template = translations[template] || template
- // Replace
- return template.replace(/{([^}]+)}/g, function (_, key) {
- return replacements[key] || '{' + key + '}'
- })
- }
3、构建一个简单的vue页面
- <template>
- <div class="containers" ref="content">
- <a-space>
- <el-button @click="downloadBpmn">
- <a-icon type="download" />
- 保存BPMN
- </el-button>
- <el-button @click="downloadSvg">
- <a-icon type="download" />
- 保存SVG
- </el-button>
-
- <a-upload :file-list="uploadBpmnFileList" :before-upload="beforeUpload">
- <el-button>
- <a-icon type="upload" />
- 导入BPMN
- </el-button>
- </a-upload>
-
- <el-button-group>
- <el-button @click="handlerUndo">撤销</el-button>
- <el-button @click="handlerRedo">恢复</el-button>
- </el-button-group>
-
- <el-button-group>
- <el-button @click="handlerZoom(0.1)">放大</el-button>
- <el-button @click="handlerZoom(-0.1)">缩小</el-button>
- <el-button @click="handlerZoom(0)">还原</el-button>
- </el-button-group>
-
- <a hidden ref="downloadLink"></a>
- </a-space>
-
- <div class="canvas" ref="canvas"></div>
- <div id="js-properties-panel" class="panel"></div>
- </div>
- </template>
-
- <script>
- import BpmnModeler from 'bpmn-js/lib/Modeler'
-
- import propertiesPanelModule from 'bpmn-js-properties-panel'
- import propertiesProviderModule from 'bpmn-js-properties-panel/lib/provider/bpmn'
- import bpmnModdleDescriptor from 'bpmn-moddle/resources/bpmn/json/bpmn.json'
-
- // BPMN国际化
- import customTranslate from './customTranslate/customTranslate'
-
- import { defaultXmlStr } from './defaultXmlStr'
-
- // 自定义汉化模块
- var customTranslateModule = {
- translate: ['value', customTranslate],
- }
-
- export default {
- components: {},
- data() {
- return {
- bpmnModeler: null,
- container: null,
- canvas: null,
-
- uploadBpmnFileList: [],
- scale: 1,
- }
- },
- created() {},
- mounted() {
- this.init()
- },
- methods: {
- /**
- * 初始化流程设计器对象
- * @returns {Promise<void>}
- */
- async init() {
- // xmlStr 是现有的图,defaultXmlStr是默认只有开始的图
- this.xmlStr = await this.getXmlUrl()
- this.$nextTick(() => {
- this.initBpmn()
- })
- },
- async initBpmn() {
- // 获取到属性ref为“content”的dom节点
- this.container = this.$refs.content
- // 获取到属性ref为“canvas”的dom节点
- const canvas = this.$refs.canvas
- // 创建BpmnModeler
- this.bpmnModeler = new BpmnModeler({
- container: canvas,
- // 加入工具栏支持
- propertiesPanel: {
- parent: '#js-properties-panel',
- },
- additionalModules: [
- // 左边工具栏以及节点
- propertiesProviderModule,
- // 右边的工具栏
- propertiesPanelModule,
- // 国际化
- customTranslateModule,
- ],
- moddleExtensions: {
- bpmn: bpmnModdleDescriptor,
- },
- })
- // 创建新流程
- await this.createNewDiagram(defaultXmlStr)
- },
-
- getXmlUrl() {
- let diagramUrl = 'https://hexo-blog-1256114407.cos.ap-shenzhen-fsi.myqcloud.com/mock1.bpmn'
- return new Promise(resolve => {
- this.$http.get(diagramUrl).then(function (res) {
- resolve(res.data)
- })
- })
- },
- /**
- * 创建新流程
- * @param bpmn BPMN流程XML报文
- * @returns {Promise<void>}
- */
- async createNewDiagram(bpmn) {
- // 将字符串转换成图显示出来;
- this.bpmnModeler.importXML(bpmn, err => {
- if (err) {
- this.$message.error('打开模型出错,请确认该模型符合Bpmn2.0规范')
- } else {
- console.log('成功导入模型')
- }
- })
- },
-
- handlerRedo() {
- this.bpmnModeler.get('commandStack').redo()
- },
- handlerUndo() {
- this.bpmnModeler.get('commandStack').undo()
- },
- handlerZoom(radio) {
- const newScale = !radio ? 1.0 : this.scale + radio
- this.bpmnModeler.get('canvas').zoom(newScale)
- this.scale = newScale
- },
-
- beforeUpload(file) {
- // this.uploadBpmnFileList = [];
- this.openBpmn(file)
- return false
- },
-
- openBpmn(file) {
- const reader = new FileReader()
- // 读取File对象中的文本信息,编码格式为UTF-8
- reader.readAsText(file, 'utf-8')
- reader.onload = () => {
- // 读取完毕后将文本信息导入到Bpmn建模器
- this.createNewDiagram(reader.result)
- }
- return false
- },
-
- downloadBpmn() {
- this.bpmnModeler.saveXML({ format: true }, (err, xml) => {
- if (!err) {
- // 获取文件名
- const name = `${this.getFilename(xml)}.bpmn`
- // 将文件名以及数据交给下载方法
- this.download({ name: name, data: xml })
- }
- })
- },
-
- downloadSvg() {
- this.bpmnModeler.saveXML({ format: true }, (err, xml) => {
- if (!err) {
- // 获取文件名
- const name = `${this.getFilename(xml)}.svg`
-
- // 从建模器画布中提取svg图形标签
- let context = ''
- const djsGroupAll = this.$refs.canvas.querySelectorAll('.djs-group')
- for (let item of djsGroupAll) {
- context += item.innerHTML
- }
- // 获取svg的基本数据,长宽高
- const viewport = this.$refs.canvas.querySelector('.viewport').getBBox()
-
- // 将标签和数据拼接成一个完整正常的svg图形
- const svg = `
- <svg
- xmlns="http://www.w3.org/2000/svg"
- xmlns:xlink="http://www.w3.org/1999/xlink"
- width="${viewport.width}"
- height="${viewport.height}"
- viewBox="${viewport.x} ${viewport.y} ${viewport.width} ${viewport.height}"
- version="1.1"
- >
- ${context}
- </svg>
- `
- // 将文件名以及数据交给下载方法
- this.download({ name: name, data: svg })
- }
- })
- },
-
- download({ name = 'diagram.bpmn', data }) {
- // 这里就获取到了之前设置的隐藏链接
- const downloadLink = this.$refs.downloadLink
- // 把输就转换为URI,下载要用到的
- const encodedData = encodeURIComponent(data)
-
- if (data) {
- // 将数据给到链接
- downloadLink.href = 'data:application/bpmn20-xml;charset=UTF-8,' + encodedData
- // 设置文件名
- downloadLink.download = name
- // 触发点击事件开始下载
- downloadLink.click()
- }
- },
-
- getFilename(xml) {
- let start = xml.indexOf('process')
- let filename = xml.substr(start, xml.indexOf('>'))
- filename = filename.substr(filename.indexOf('id') + 4)
- filename = filename.substr(0, filename.indexOf('"'))
- return filename
- },
- },
- computed: {},
- }
- </script>
-
- <style lang="less" scoped>
- // 左边工具栏以及编辑节点的样式
- @import '~bpmn-js/dist/assets/diagram-js.css';
- @import '~bpmn-js/dist/assets/bpmn-font/css/bpmn.css';
- @import '~bpmn-js/dist/assets/bpmn-font/css/bpmn-codes.css';
- @import '~bpmn-js/dist/assets/bpmn-font/css/bpmn-embedded.css';
-
- // 右边工具栏样式
- @import '~bpmn-js-properties-panel/dist/assets/bpmn-js-properties-panel.css';
-
- .containers {
- position: absolute;
- background-color: #ffffff;
- width: 80%;
- height: 100vh;
- padding: 5px;
- }
-
- .canvas {
- width: 100%;
- height: 100%;
- }
-
- .panel {
- position: absolute;
- right: 0;
- top: 0;
- width: 300px;
- }
- </style>
结果如下:
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