修改
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jiangyinzhi
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<template>
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<!-- :after-read="afterRead" -->
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<!-- :after-read="afterRead" -->
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<van-uploader
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v-model="fileList"
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:disabled="disableImg"
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multiple
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:deletable="deletable"
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:max-count="1"
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:before-read="beforeRead"
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:afterRead="afterRead"
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:before-delete="delImg"
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@click-upload="onUpload"
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accept="image/*"
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>
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<div class="uploader" >
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<van-icon name="plus" class="uploader-icon" />
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</div>
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</van-uploader>
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</template>
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<script>
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import { uploadFile } from '@/api/api.js'
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import { chooseAlbumAndTakePhoto } from '@/utils/dsbridge'
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import { downloadUrl } from '@/settings'
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import { addWaterMarker } from '@/utils/marker'
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import { Base64ToFile } from '@/utils/base64'
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export default {
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props: {
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type: {
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type: String,
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default: '',
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},
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value: {
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type: Array,
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default: () => [],
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},
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deletable: {
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type: Boolean,
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default: true,
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},
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},
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data() {
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return {
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disableImg: false,
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fileList: this.value,
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activTimer: null,
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}
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},
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mounted() {
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this.activTimer = setTimeout(() => {
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this.fileList = this.value
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}, 200)
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},
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beforeDestroy() {
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clearTimeout(this.activTimer)
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this.fileList = []
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},
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methods: {
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base64ToFile(data, fileName) {
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const dataArr = data.split(',')
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const byteString = window.atob(dataArr[1])
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const options = {
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type: 'image/jpeg',
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endings: 'native',
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}
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const u8Arr = new Uint8Array(byteString.length)
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for (let i = 0; i < byteString.length; i++) {
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u8Arr[i] = byteString.charCodeAt(i)
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}
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let formData = new FormData()
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let fileOfBlob = new File([u8Arr], fileName + '.jpg', options) //返回文件流
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formData.append('file', fileOfBlob)
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return formData
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},
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// 上传图片调用原生的方法 获取到绝对路径调用getImageFileFromUrl
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onUpload() {
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this.fileList= []
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console.log('--------chooseAlbumAndTakePhoto---', 'onUpload')
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chooseAlbumAndTakePhoto(async (data) => {
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console.log('--------onUpload---', data)
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let d = 'data:image/jpeg;base64,' + data
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this.fileIamge = d
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// let params = this.base64ToFile(d, new Date().getTime().toString())
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// console.log('--------params---', params)
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let img = Base64ToFile(d,'image/jpeg',new Date().getTime().toString() + ".jpg")
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console.log('-------------------------onUpload---', img);
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let blob = await addWaterMarker(img, 'image')
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console.log('-------------------------blob---', blob);
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let params = new FormData()
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let file = new File([blob], img.name)
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params.append('file', file)
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console.log('-------------------------file---', file);
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const res = await uploadFile(params)
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console.log('--------res---', res)
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if (res.code == 0) {
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this.fileList.push({
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fileName: res.data.original_name,
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fileId: res.data.attach_id,
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url: `${downloadUrl}${res.data.attach_id}`,
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})
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this.$emit('onUpload', this.fileList, this.type)
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}
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})
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},
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async afterRead(file) {
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this.fileList= []
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this.disableImg = true
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let params = new FormData()
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params.append('file', file.file)
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console.log(file.file)
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console.log(params)
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// console.log(decryptParseToJSON(a),77777777);
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const res = await uploadFile(params)
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if (res.code == 0) {
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this.disableImg = false
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this.fileList.push({
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fileName: res.data.original_name,
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fileId: res.data.attach_id,
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url: `${downloadUrl}${res.data.attach_id}`,
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})
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this.$emit('onUpload', this.fileList, this.type)
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// this.$emit('afterRead', res.data, this.type)
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}else{
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this.disableImg = false
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}
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return true
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},
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beforeRead(img) {
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if(!img){
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return
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}
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return new Promise(async(resolve, reject) => {
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let blob = await addWaterMarker(img, 'blob')
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blob.name = img.name
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let file = new File([blob], img.name)
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resolve(file)
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})
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}, //压缩图片
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compressFiles(fileObj) {
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let type = fileObj.type
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return new Promise((resolve, reject) => {
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let reader = new FileReader()
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reader.readAsDataURL(fileObj)
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reader.onload = function (e) {
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let image = new Image() //新建一个img标签（不嵌入DOM节点，仅做canvas操作)
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image.src = e.target.result //让该标签加载base64格式的原图
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image.onload = function () {
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//图片加载完毕后再通过canvas压缩图片，否则图片还没加载完就压缩，结果图片是全黑的
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let canvas = document.createElement('canvas'), //创建一个canvas元素
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context = canvas.getContext('2d'), //context相当于画笔，里面有各种可以进行绘图的API
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imageWidth = image.width / 2, //压缩后图片的宽度，这里设置为缩小一半
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imageHeight = image.height / 2, //压缩后图片的高度，这里设置为缩小一半
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data = '' //存储压缩后的图片
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canvas.width = imageWidth //设置绘图的宽度
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canvas.height = imageHeight //设置绘图的高度
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//使用drawImage重新设置img标签中的图片大小，实现压缩。drawImage方法的参数可以自行查阅W3C
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context.drawImage(image, 0, 0, imageWidth, imageHeight)
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//使用toDataURL将canvas上的图片转换为base64格式
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data = canvas.toDataURL(type)
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canvas.toBlob(function (blob) {
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const f = new File([blob], fileObj.name, { type })
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resolve(f)
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}, type)
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}
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}
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})
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},
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delImg(file, detail) {
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this.fileList.splice(detail.index, 1)
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this.$emit('delImg', file, detail, this.type)
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},
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checkImgisUpload(list) {
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if (this.fileList && list && this.fileList.length == list.length) {
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return false
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} else {
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return true
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}
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},
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},
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}
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</script>
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<style lang='less' scoped>
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/deep/ .van-uploader__preview-image {
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padding: 10px;
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box-sizing: border-box;
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background: #fff;
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box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);
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border-radius: 10px;
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margin-left: 20px;
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margin-top: 10px;
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}
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/deep/ .van-uploader__preview-delete {
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margin-top: 10px;
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}
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.uploader {
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width: 2.133333rem;
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height: 2.133333rem;
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background: #f7f7f7;
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border-radius: 5px;
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display: flex;
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justify-content: center;
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align-items: center;
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margin: 10px 0 10px 20px;
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.uploader-icon {
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font-size: 30px;
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color: #ababab;
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}
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}
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</style>
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