vue项目实战-脑图编辑管理系统kitymind百度脑图

前言

项目为前端vue项目，把kitymind百度脑图整合到前端vue项目中，显示了脑图的绘制，编辑，到处为json，png，text等格式的功能

文章末尾有相关的代码链接，代码只包含前端项目，在原始的项目中也编写了相关的接口，但是原先的后端项目是公司的，不方便公开出来，这里只提供我新写的前端项目，刚兴趣的同学可以把后端实现。

项目目录

项目的核心逻辑在public包下的local-kitymind文。件夹中，vue页面只是做了简单的引用，核心逻辑写在了diy.js与index.html两个文件当中

下面是功能介绍以及相关实现。

脑图编辑页面

主页面展示

用户可以在编辑页编辑脑图文件，支持导出为各种格式，也可导入json文件,到处test，png，md，json等格式的文件，我个人新增了 “保存” 和 “内存为” 的按钮，在原系统中可以同后端进行交互，实现json信息的入库。

保存：

自动显示当前脑图所属版本，要求用户输入脑图名称和脑图描述，脑图名称为必填项

另存为：

用户点击另存为按钮，出现弹窗，要求用户输入脑图名称，描述，新建版本名称，新建版本描述，

功能实现

diy.js

在diy.js文件中我们定义了最上层若干按钮的样式以及对应的函数。

若干个导出按钮与导入导入按钮没有与后端交互，调用了百度脑图的api，另存为和保存按钮调用了在index.html中定义的vue函数，使得页面出现弹窗，同时将脑图的json转化为字符串保存在浏览器的localStorage中。下面是代码

(function () {var oldData;var baseURL =  'http://localhost:12222';// var baseURL = 'http://10.20.26.231:12222';var html = '';html += '<a href="" class="diy export" data-type="json">导出json</a>',html += '<a href="" class="diy export" data-type="md">导出md</a>',html += '<a href="" class="diy export" data-type="km">导出km</a>',html += '<a href="" class="diy export" data-type="svg">导出svg</a>',html += '<a href="" class="diy export" data-type="txt">导出text</a>',html += '<a href="" class="diy export" data-type="png">导出png</a>',html += '<button class="diy input">',html += '导入<input type="file" id="fileInput" accept=".km,.txt,.md,.json" >',html += '</button>'html += '<button class="diy httpinput">保存</button>',html += '<button class="diy httpinput2">另存为</button>',$('.editor-title').append(html);$('.diy').css({// 'height': '30px',// 'line-height': '30px','margin-top': '0px','float': 'right','background-color': '#fff','min-width': '60px','text-decoration': 'none',color: '#999','padding': '0 10px',border: 'none','border-right': '1px solid #ccc',});$('.input').css({'overflow': 'hidden','position': 'relative',}).find('input').css({cursor: 'pointer',position: 'absolute',top: 0,bottom: 0,left: 0,right: 0,display: 'inline-block',opacity: 0});// $('.httpinput').css({//     'overflow': 'hidden',//     'position': 'relative',// }).find('httpinput').css({//     cursor: 'pointer',//     position: 'absolute',//     top: 0,//     bottom: 0,//     left: 0,//     right: 0,//     display: 'inline-block',//     opacity: 0// });$('.httpinput2').css({'overflow': 'hidden','position': 'relative',}).find('httpinput2').css({cursor: 'pointer',position: 'absolute',top: 0,bottom: 0,left: 0,right: 0,display: 'inline-block',opacity: 0});$(document).on('click', '.export', function (event) {event.preventDefault();var $this = $(this),type = $this.data('type'),exportType;switch (type) {case 'km':exportType = 'json';break;case 'md':exportType = 'markdown';break;case 'svg':exportType = 'svg';break;case 'txt':exportType = 'text';break;case 'png':exportType = 'png';break;default:exportType = type;break;}editor.minder.exportData(exportType).then(function (content) {switch (exportType) {case 'json':console.log($.parseJSON(content));break;default:console.log(content);break;}var blob = new Blob();switch (exportType) {case 'png':blob = dataURLtoBlob(content); //将base64编码转换为blob对象break;default:blob = new Blob([content]);break;}var a = document.createElement("a"); //建立标签，模拟点击下载a.download = $('#node_text1').text() + '.' + type;a.href = URL.createObjectURL(blob);a.click();});});//保存$(document).on('click', '.httpinput', async function (event) {// ct = await editor.minder.exportData('json')// console.log('shangyi');var ct;console.log('-------insert start-----')editor.minder.exportData('json').then(function (content) {ct = content;// console.log(ct)localStorage.setItem('brainJson',ct)});// console.log(version)myApp.openDialog()});//另存为$(document).on('click', '.httpinput2', async function (event) {console.log('shangyi');var ct;console.log('-------insert start-----')editor.minder.exportData('json').then(function (content) {ct = content;// console.log(ct)localStorage.setItem('brainJson',ct)});// console.log(version)myApp.openDialog2()});// 导入window.onload = function () {var fileInput = document.getElementById('fileInput');fileInput.addEventListener('change', function (e) {var file = fileInput.files[0],// textType = /(md|km)/,fileType = file.name.substr(file.name.lastIndexOf('.') + 1);console.log(file);switch (fileType) {case 'md':fileType = 'markdown';break;case 'txt':fileType = 'text';break;				case 'km':case 'json':fileType = 'json';break;default:console.log("File not supported!");alert('只支持.km、.md、、text、.json文件');return;}var reader = new FileReader();reader.onload = function (e) {var content = reader.result;editor.minder.importData(fileType, content).then(function (data) {console.log(data)$(fileInput).val('');});}reader.readAsText(file);});}})();//base64转换为图片blob
function dataURLtoBlob(dataurl) {var arr = dataurl.split(',');//注意base64的最后面中括号和引号是不转译的var _arr = arr[1].substring(0, arr[1].length - 2);var mime = arr[0].match(/:(.*?);/)[1],bstr = atob(_arr),n = bstr.length,u8arr = new Uint8Array(n);while (n--) {u8arr[n] = bstr.charCodeAt(n);}return new Blob([u8arr], {type: mime});
}

index.html文件

我们定义了页面标题等信息，引入kityminder-editor这个标签，同时使用elements-ui写了两个保存窗口，用户在“保存” 和 “另存为” 窗口可以点击“保存”按钮，则调用axios请求将json字符串发送至后端。

在发送请求的同时也会携带当前登陆者的信息，登陆者的信息是存储在cookie中，调用函数 getCookie('employeeId') 可以实现，但是用户这部分功能为公司项目，在我提供的代码中并未体现。

这里介绍一下 document.addEventListener 这个函数，在项目中他起到了初始化页面的作用，原先的项目逻辑为在脑图管理页面点击一条脑图信息，则讲相关信息存储到浏览器的localStorage中，然后调用脑图初始化的api，将json渲染到页面上,从而实现脑图的管理与跳转。下面是整体代码

<!DOCTYPE html>
<html>
<head><meta charset="utf-8"><title>KityMinder Editor</title><link href="favicon.ico" type="image/x-icon" rel="shortcut icon"><!-- bower:css --><link rel="stylesheet" href="./bower_components/bootstrap/dist/css/bootstrap.css" /><link rel="stylesheet" href="./bower_components/codemirror/lib/codemirror.css" /><link rel="stylesheet" href="./bower_components/hotbox/hotbox.css" /><link rel="stylesheet" href="./bower_components/kityminder-core/dist/kityminder.core.css" /><link rel="stylesheet" href="./bower_components/color-picker/dist/color-picker.min.css" /><!-- endbower --><link rel="stylesheet" href="kityminder.editor.min.css"><style>html, body {margin: 0;padding: 0;height: 100%;overflow: hidden;}h1.editor-title {background: #393F4F;color: white;margin: 0;height: 40px;font-size: 14px;line-height: 40px;font-family: 'Hiragino Sans GB', 'Arial', 'Microsoft Yahei';font-weight: normal;padding: 0 20px;}div.minder-editor-container {position: absolute;top: 40px;bottom: 0;left: 0;right: 0;}</style>
</head><body ng-app="kityminderDemo" ng-controller="MainController"><h1 class="editor-title"><a href="http://www.huangyebo.cn" style="color: #fff;" target="_blank">KityMinder Editor</a>
<a href="https://beian.miit.gov.cn/" target="_blank"></a>
</h1><kityminder-editor on-init="initEditor(editor, minder)" data-theme="fresh-green"></kityminder-editor>
<iframe name="frameFile" style="display:none;"></iframe><div id="app"><el-dialog :visible.sync="dialogVisible" title="脑图保存"><el-form ref="form" :model="BrainMap" label-width="80px"><el-form-item label="脑图名称"><el-input required="required" v-model="BrainMap.name"></el-input></el-form-item><el-form-item label="脑图描述"><el-input v-model="BrainMap.description"></el-input></el-form-item><el-form-item label="脑图版本"><el-col :span="8"><el-input readonly v-model="BrainMap.version"></el-input></el-col></el-form-item><el-form-item><el-button type="primary" @click="onSubmit">保存</el-button><el-button>取消</el-button></el-form-item></el-form></el-dialog><el-dialog :visible.sync="dialogVisible" title="另存为"><el-form ref="form" :model="BrainMap" label-width="80px"><el-form-item label="脑图名称"><el-input required="required" v-model="BrainMap.name"></el-input></el-form-item><el-form-item label="脑图描述"><el-input v-model="BrainMap.description"></el-input></el-form-item><el-form-item label="版本名称"><el-col ><el-input  v-model="versionName"></el-input></el-col></el-form-item><el-form-item label="版本描述"><el-col ><el-input  v-model="versionDescription"></el-input></el-col></el-form-item><el-form-item><el-button type="primary" @click="saveVersion">保存</el-button><el-button>取消</el-button></el-form-item></el-form></el-dialog>
</div><div>
</div>
</body><!-- bower:js -->
<script src="./bower_components/jquery/dist/jquery.js"></script>
<script src="./bower_components/bootstrap/dist/js/bootstrap.js"></script>
<script src="./bower_components/angular/angular.js"></script>
<script src="./bower_components/angular-bootstrap/ui-bootstrap-tpls.js"></script>
<script src="./bower_components/codemirror/lib/codemirror.js"></script>
<script src="./bower_components/codemirror/mode/xml/xml.js"></script>
<script src="./bower_components/codemirror/mode/javascript/javascript.js"></script>
<script src="./bower_components/codemirror/mode/css/css.js"></script>
<script src="./bower_components/codemirror/mode/htmlmixed/htmlmixed.js"></script>
<script src="./bower_components/codemirror/mode/markdown/markdown.js"></script>
<script src="./bower_components/codemirror/addon/mode/overlay.js"></script>
<script src="./bower_components/codemirror/mode/gfm/gfm.js"></script>
<script src="./bower_components/angular-ui-codemirror/ui-codemirror.js"></script>
<script src="./bower_components/marked/lib/marked.js"></script>
<script src="./bower_components/kity/dist/kity.min.js"></script>
<script src="./bower_components/hotbox/hotbox.js"></script>
<script src="./bower_components/json-diff/json-diff.js"></script>
<script src="./bower_components/kityminder-core/dist/kityminder.core.min.js"></script>
<script src="./bower_components/color-picker/dist/color-picker.min.js"></script>
<!-- endbower --><script src="kityminder.editor.min.js"></script>
<script src="diy.js"></script><!-- 引入 Vue.js -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<!-- 引入 Element-UI 样式 -->
<link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-chalk/index.css">
<!-- 引入 Element-UI 组件库 -->
<script src="https://unpkg.com/element-ui/lib/index.js"></script>
<script src="https://unpkg.com/axios/dist/axios.min.js"></script><script>var baseURL =  'http://localhost:12222';// var baseURL = 'http://10.20.26.231:12222';angular.module('kityminderDemo', ['kityminderEditor']).controller('MainController', function($scope) {$scope.initEditor = function(editor, minder) {window.editor = editor;window.minder = minder;};});function getCookie(name){var strcookie = document.cookie;//获取cookie字符串var arrcookie = strcookie.split("; ");//分割//遍历匹配console.log(arrcookie)for ( var i = 0; i < arrcookie.length; i++) {var arr = arrcookie[i].split("=");if (arr[0] == name){return arr[1];}}return "";}var myApp = new Vue({el: '#app',data() {return {dialogVisible: false, // 控制弹窗的显示和隐藏versionDescription:'',versionName:'',BrainMap: {name: '',version: '',description: '',Json:'',employeeId:'',},}},methods: {openDialog() { //保存到旧版本this.dialogVisible = true; // 打开弹窗this.BrainMap.version = localStorage.getItem('version')},openDialog2() { //另存为this.dialogVisible = true; // 打开弹窗//   this.BrainMap.version = localStorage.getItem('version')},onSubmit() {console.log('save!');this.BrainMap.Json = localStorage.getItem('brainJson')this.BrainMap.employeeId = getCookie('employeeId')if(this.BrainMap.name===''){this.$message({message:'脑图名不为空',type:'warning'})return}axios({method: 'POST',url: baseURL+'/common/saveBrainVersion',data: {json:this.BrainMap.Json,version:this.BrainMap.version,name: this.BrainMap.name,description: this.BrainMap.description,employeeId:this.BrainMap.employeeId,}}).then(response => {console.log( response)}, error => {console.log('错误', error.message)})this.dialogVisible = false},saveVersion() {var versionId = 0axios({method: 'get',url: baseURL+'/common/versionMaxId',params: {}}).then(response => {versionId = response.data.data.idthis.BrainMap.version = versionId + 1console.log(this.BrainMap.version)this.onSubmit()}, error => {console.log('错误', error.message)})axios({method: 'get',url: baseURL+'/common/saveVersion',params: {versionName: this.versionName,description: this.versionDescription}}).then(response => {console.log( response)}, error => {console.log('错误', error.message)})this.dialogVisible = false},}});document.addEventListener("DOMContentLoaded", function() {// 在页面加载完成后执行的 JavaScript 代码// 发起请求console.log("监听页面初始化")// var content = '{"root":{"data":{"id":"ctojgfitvug0","created":1687981368534,"text":"shangyi"},"children":[]},"template":"default","theme":"fresh-blue","version":"1.4.33"} 'var content = localStorage.getItem('brainJson')editor.minder.importData('json', content).then(function (data) {// console.log(data)});});
</script></html>