参考:https://www.codetd.com/article/15219743
- 安装
// 安装 docxtemplater
npm install docxtemplater pizzip --save
// 安装 jszip-utils
npm install jszip-utils --save
// 安装 jszip
npm install jszip --save
// 安装 FileSaver
npm install file-saver --save
// 引入处理图片的插件1
npm install docxtemplater-image-module-free --save
// 引入处理图片的插件2
npm install angular-expressions --save
- 关键代码JS部分
/*** 导出word文档(带图片) doc.js* */
import Docxtemplater from 'docxtemplater'
import PizZip from 'pizzip'
import JSZipUtils from 'jszip-utils'
import { saveAs } from 'file-saver'/*** 将base64格式的数据转为ArrayBuffer* @param {Object} dataURL base64格式的数据*/
function base64DataURLToArrayBuffer(dataURL) {const base64Regex = /^data:image\/(png|jpg|jpeg|svg|svg\+xml);base64,/;if (!base64Regex.test(dataURL)) {return false;}const stringBase64 = dataURL.replace(base64Regex, "");let binaryString;if (typeof window !== "undefined") {binaryString = window.atob(stringBase64);} else {binaryString = Buffer.from(stringBase64, "base64").toString("binary");}const len = binaryString.length;const bytes = new Uint8Array(len);for (let i = 0; i < len; i++) {const ascii = binaryString.charCodeAt(i);bytes[i] = ascii;}return bytes.buffer;
}export const ExportBriefDataDocx = (tempDocxPath, data, fileName, imgSize) => {console.log(111, tempDocxPath, data, fileName, imgSize)//这里要引入处理图片的插件var ImageModule = require('docxtemplater-image-module-free');var expressions = require('angular-expressions')var assign = require('lodash/assign')var last = require("lodash/last")expressions.filters.lower = function (input) {// This condition should be used to make sure that if your input is// undefined, your output will be undefined as well and will not// throw an errorif (!input) return input// toLowerCase() 方法用于把字符串转换为小写。return input.toLowerCase()}function angularParser(tag) {tag = tag.replace(/^\.$/, 'this').replace(/(’|‘)/g, "'").replace(/(“|”)/g, '"')const expr = expressions.compile(tag)return {get: function (scope, context) {let obj = {}const index = last(context.scopePathItem)const scopeList = context.scopeListconst num = context.numfor (let i = 0, len = num + 1; i < len; i++) {obj = assign(obj, scopeList[i])}//word模板中使用 $index+1 创建递增序号obj = assign(obj, { $index: index })return expr(scope, obj)}}}JSZipUtils.getBinaryContent(tempDocxPath, (error, content) => {if (error) {console.log(error)}expressions.filters.size = function (input, width, height) {return {data: input,size: [width, height],};};let opts = {}opts = {//图像是否居中centered: true};opts.getImage = (chartId) => {//将base64的数据转为ArrayBufferreturn base64DataURLToArrayBuffer(chartId);}opts.getSize = function (img, tagValue, tagName) {//自定义指定图像大小if (imgSize.hasOwnProperty(tagName)) {return imgSize[tagName];} else {return [200, 200];}}// 创建一个JSZip实例,内容为模板的内容 const zip = new PizZip(content)// 创建并加载 Docxtemplater 实例对象// 设置模板变量的值let doc = new Docxtemplater();doc.attachModule(new ImageModule(opts));doc.loadZip(zip);doc.setOptions({parser:angularParser});doc.setData(data)try {// 呈现文档,会将内部所有变量替换成值,doc.render()} catch (error) {const e = {message: error.message,name: error.name,stack: error.stack,properties: error.properties}console.log('err',{ error: e })// 当使用json记录时,此处抛出错误信息throw error}// 生成一个代表Docxtemplater对象的zip文件(不是一个真实的文件,而是在内存中的表示)const out = doc.getZip().generate({type: 'blob',mimeType: 'application/vnd.openxmlformats-officedocument.wordprocessingml.document'})// 将目标文件对象保存为目标类型的文件,并命名saveAs(out, fileName)})
}/**1. 将图片的url路径转为base64路径2. 可以用await等待Promise的异步返回3. @param {Object} imgUrl 图片路径*/
export function getBase64Sync(imgUrl) {return new Promise(function (resolve, reject) {// 一定要设置为let,不然图片不显示let image = new Image();//图片地址image.src = imgUrl;// 解决跨域问题image.setAttribute("crossOrigin", '*'); // 支持跨域图片// image.onload为异步加载image.onload = function () {let canvas = document.createElement("canvas");canvas.width = image.width; canvas.height = image.height;let context = canvas.getContext("2d");context.drawImage(image, 0, 0, image.width, image.height);//图片后缀名let ext = image.src.substring(image.src.lastIndexOf(".") + 1).toLowerCase();//图片质量let quality = 0.8;//转成base64let dataurl = canvas.toDataURL("image/" + ext, quality);//返回resolve(dataurl);};})
}
- 导出函数
vue 中引入上述js文件和方法
import {ExportBriefDataDocx,getBase64Sync} from './doc.js'
async ExportBriefDataDocx(){//图片转base64let imgurl= await getBase64Sync('图片路径') let imgurl2= await getBase64Sync('图片路径')let data= {name:this.name,imgurl:this.imgurl,imgurl2:this.imgurl2}let imgSize = {//控制导出的word图片大小,可自定义imgurl:[200, 200],imgurl2:[200, 200],};exportWord("/我的模板.docx", data, `${this.listname}.docx`, imgSize);//docx模板放在public文件夹下,如果是vue2放在static下// ExportBriefDataDocx("/static/我的模板.docx", data, `${listname}.docx`, imgSize);}
- 模板内容
自己准备一个docx文档,然后里面标注好需替换的参数
列表循环-- {#list}{name}{/list}
单个参数–{}
图片–{%imgUrl}
大概就这些,我也是从参考链接里看到的,至此基本能解决大部分问题,但是我还遇到了两个问题,所以自己记录补充一下 - 表格循环打印会多出空格
我想循环表格出来,但是输入数据,出来后实际是这样的
let data= {ld:[{data1:1,data2:2},{data1:1,data2:2}],} ExportBriefDataDocx("/static/wd.docx", data, `${listname}.docx`, imgSize);
多出了很多空格,我想着去掉模板中的换行符,像这样
我本来是想着这样就能少一行,就是正常表格了,但是其实报错了
message: ‘The filetype for this file could not be identified, is this file corrupted ?’, stack: ‘Error: The filetype for this file could not be ide…//./node_modules/jszip-utils/lib/index.js:110:25)’
大概就是类型不对,读不出来什么的
后来灵光一闪,想到参考链接里各种数据都是在表格里的,应该没问题,所以我就想着开始结束都放进去,就像这样
然后结果就对了
7.保存图片模糊问题 quality = 1也没啥用
改成这样,导出后的图片能经得起缩放
export function getBase64Sync(imgUrl,width,height) {
//传入你想要的宽高,最好大一点,这个不会影响导出后的大小,这里的宽高可以理解为分辨率,就是canvas绘制的时候的大小,imgSize里的才是导出到文档的大小return new Promise(function (resolve, reject) {// 一定要设置为let,不然图片不显示let image = new Image();//图片地址image.src = imgUrl;// 解决跨域问题image.setAttribute("crossOrigin", '*'); // 支持跨域图片// image.onload为异步加载image.onload = function () {let canvas = document.createElement("canvas");canvas.width = width*2; canvas.height = height*2; //宽高放大两倍let context = canvas.getContext("2d");context.drawImage(image, 0, 0); //图片后缀名let ext = image.src.substring(image.src.lastIndexOf(".") + 1).toLowerCase();//图片质量//let quality = 1;//转成base64let dataurl = canvas.toDataURL("image/"+ext);//返回resolve(dataurl);};})
}