158 lines
3.2 KiB
Vue
158 lines
3.2 KiB
Vue
<template>
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<view class="">
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<u-upload :fileList="isShowList?fileList:[]" @afterRead="afterRead" @delete="deletePic" :multiple="multiple"
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:deletable="deletable" :maxCount="maxCount">
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<slot></slot>
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</u-upload>
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<u-toast ref="uToast"></u-toast>
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</view>
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</template>
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<script>
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export default {
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name: 'CustImageUpload', // 图片上传阅览
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props: {
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//单个文件上传大小（M）
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maxSize: {
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type: Number,
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default: 1 //1M
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},
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//上传文件数量
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maxCount: { // 限制数量
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type: Number,
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default: 1
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},
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//是否显示删除按钮
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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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//是否多选
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multiple: true,
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//v-model的值
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value: String,
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//是否显示已上传图片列表
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isShowList: {
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type: Boolean,
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default: false
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}
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},
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data() {
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return {
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fileList: []
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}
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},
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computed: {
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/** 获取文件 url 前缀 */
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baseUrl() {
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return uni.$u.http.config.baseURL
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}
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},
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watch: {
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//拼接上url前面的部分
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value(imgUrls) {
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if (imgUrls) {
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const {
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baseUrl
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} = this
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this.fileList = imgUrls.split(',').map(url => ({
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url: baseUrl + url,
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status: 'success'
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}))
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}
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}
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},
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methods: {
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// 删除图片
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deletePic(event) {
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const {
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fileList
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} = this
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const {
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index
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} = event
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this.fileList = [
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...fileList.slice(0, index),
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...fileList.slice(index + 1)
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]
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this.emits()
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},
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// 新增图片
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async afterRead(event) {
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//多文件上传file是个数组集合
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const files = Array.isArray(event.file) ? event.file : [event.file];
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for (let file of files) {
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console.log(file.size)
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if (file.size > this.maxSize * 1024 * 1224) {
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console.log('走判断了');
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this.$refs.uToast.show({
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type: 'error',
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icon: false,
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title: '图片超过大小',
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message: "图片大小不超过" + this.maxSize + 'M',
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});
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continue;
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}
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const updatedFile = {
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...file,
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status: 'uploading',
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message: '上传中'
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};
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this.fileList.push(updatedFile);
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const {
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url
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} = await this.uploadFile(file.thumb);
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updatedFile.status = 'success';
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updatedFile.message = '上传完成';
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updatedFile.url = url;
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}
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this.emits();
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},
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//文件上传接口
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uploadFile(url) {
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//这是用promise封装异步请求
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return new Promise((resolve, reject) => {
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uni.$u.http.upload('/common/upload', {
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filePath: url,
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name: 'file',
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timeout: 60000 //超时时间设置为1分钟，防止时间过短无法上传
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}).then(res => {
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resolve(res);
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}).catch(error => {
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reject(error)
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});
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});
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},
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/** 抛出事件 */
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emits() {
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const {
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fileList
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} = this;
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//截取掉url前面的部分
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const imgUrls = fileList.map(({
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url
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}) => {
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//找到/profile/upload出现的位置，位置就是/的索引
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const i = url.indexOf('/profile/upload')
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//截取索引后面的部分
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return url.slice(i)
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//最后将数组元素按照,拼接成字符串
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}).join(',')
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this.$emit('input', imgUrls)
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}
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}
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}
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</script>
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<style>
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</style> |