html2Canvas+JsPDF 导出pdf
问题:类似于下面着这种网络图片使用img导出的时候是空白的
解决:将网络图片转成base64
<img :src="aaa" style="width:200px" alt="">
转base64
let res = await this.getBase64Image('https://gimg3.baidu.com/search/src=http%3A%2F%2Fpics4.baidu.com%2Ffeed%2F7e3e6709c93d70cf827fb2fda054500cb8a12bc9.jpeg%40f_auto%3Ftoken%3Dd97d3f0fd06e680e592584f8c7a24ac8&refer=http%3A%2F%2Fwww.baidu.com&app=2021&size=f360,240&n=0&g=0n&q=75&fmt=auto?sec=1690045200&t=e1a88c44b1b9907677400a079766e0bf')
this.aaa = res
getBase64Image(src) {
return new Promise(resolve => {
const img = new Image()
img.crossOrigin = ''
img.src = src
img.onload = function() {
const canvas = document.createElement('canvas')
canvas.width = img.width
canvas.height = img.height
const ctx = canvas.getContext('2d')
ctx && ctx.drawImage(img, 0, 0, img.width, img.height)
const ext = img.src.substring(img.src.lastIndexOf('.') + 1).toLowerCase()
const dataURL = canvas.toDataURL('image/' + ext)
resolve(dataURL)
}
})
},
导出