2021-05-13 11:03:32 +08:00
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<template>
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<view class="u-upload" v-if="!disabled">
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<view
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v-if="showUploadList"
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class="u-list-item u-preview-wrap"
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v-for="(item, index) in lists"
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:key="index"
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:style="{
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width: width + 'rpx',
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height: width + 'rpx'
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}"
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>
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<view
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v-if="deletable"
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class="u-delete-icon"
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@tap.stop="deleteItem(index)"
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:style="{
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background: delBgColor
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}"
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>
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<u-icon class="u-icon" :name="delIcon" size="20" :color="delColor"></u-icon>
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</view>
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<u-line-progress
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v-if="showProgress && item.progress > 0 && !item.error"
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:show-percent="false"
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height="16"
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class="u-progress"
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:percent="item.progress"
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></u-line-progress>
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<view @tap.stop="retry(index)" v-if="item.error" class="u-error-btn">点击重试</view>
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<image @tap.stop="doPreviewImage(item.url || item.path, index)" class="u-preview-image" v-if="!item.isImage" :src="item.url || item.path" :mode="imageMode"></image>
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</view>
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<slot name="file" :file="lists"></slot>
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<view style="display: inline-block;" @tap="selectFile" v-if="maxCount > lists.length">
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<slot name="addBtn"></slot>
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<view
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v-if="!customBtn"
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class="u-list-item u-add-wrap"
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hover-class="u-add-wrap__hover"
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hover-stay-time="150"
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:style="{
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width: width + 'rpx',
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height: width + 'rpx'
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}"
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>
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<u-icon name="plus" class="u-add-btn" size="40"></u-icon>
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<view class="u-add-tips">{{ uploadText }}</view>
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</view>
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</view>
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</view>
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</template>
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<script>
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/**
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* upload 图片上传
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* @description 该组件用于上传图片场景
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* @tutorial https://www.uviewui.com/components/upload.html
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* @property {String} action 服务器上传地址
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* @property {String Number} max-count 最大选择图片的数量（默认99）
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* @property {Boolean} custom-btn 如果需要自定义选择图片的按钮，设置为true（默认false）
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* @property {Boolean} show-progress 是否显示进度条（默认true）
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* @property {Boolean} disabled 是否启用(显示/移仓)组件（默认false）
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* @property {String} image-mode 预览图片等显示模式，可选值为uni的image的mode属性值（默认aspectFill）
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* @property {String} del-icon 右上角删除图标名称，只能为uView内置图标
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* @property {String} del-bg-color 右上角关闭按钮的背景颜色
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* @property {String} del-color 右上角关闭按钮图标的颜色
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* @property {Object} header 上传携带的头信息，对象形式
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* @property {Object} form-data 上传额外携带的参数
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* @property {String} name 上传文件的字段名，供后端获取使用（默认file）
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* @property {Array<String>} size-type original 原图，compressed 压缩图，默认二者都有（默认['original', 'compressed']）
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* @property {Array<String>} source-type 选择图片的来源，album-从相册选图，camera-使用相机，默认二者都有（默认['album', 'camera']）
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* @property {Boolean} preview-full-image 是否可以通过uni.previewImage预览已选择的图片（默认true）
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* @property {Boolean} multiple 是否开启图片多选，部分安卓机型不支持（默认true）
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* @property {Boolean} deletable 是否显示删除图片的按钮（默认true）
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* @property {String Number} max-size 选择单个文件的最大大小，单位B(byte)，默认不限制（默认Number.MAX_VALUE）
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* @property {Array<Object>} file-list 默认显示的图片列表，数组元素为对象，必须提供url属性
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* @property {Boolean} upload-text 选择图片按钮的提示文字（默认“选择图片”）
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* @property {Boolean} auto-upload 选择完图片是否自动上传，见上方说明（默认true）
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* @property {Boolean} show-tips 特殊情况下是否自动提示toast，见上方说明（默认true）
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* @property {Boolean} show-upload-list 是否显示组件内部的图片预览（默认true）
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* @event {Function} on-oversize 图片大小超出最大允许大小
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* @event {Function} on-preview 全屏预览图片时触发
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* @event {Function} on-remove 移除图片时触发
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* @event {Function} on-success 图片上传成功时触发
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* @event {Function} on-change 图片上传后，无论成功或者失败都会触发
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* @event {Function} on-error 图片上传失败时触发
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* @event {Function} on-progress 图片上传过程中的进度变化过程触发
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* @event {Function} on-uploaded 所有图片上传完毕触发
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* @event {Function} on-choose-complete 每次选择图片后触发，只是让外部可以得知每次选择后，内部的文件列表
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* @example <u-upload :action="action" :file-list="fileList" ></u-upload>
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*/
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export default {
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name: 'u-upload',
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props: {
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//是否显示组件自带的图片预览功能
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showUploadList: {
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type: Boolean,
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default: true
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},
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// 后端地址
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action: {
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type: String,
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default: ''
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},
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// 最大上传数量
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maxCount: {
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type: [String, Number],
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default: 52
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},
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// 是否显示进度条
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showProgress: {
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type: Boolean,
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default: true
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},
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// 是否启用
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disabled: {
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type: Boolean,
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default: false
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},
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// 预览上传的图片时的裁剪模式，和image组件mode属性一致
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imageMode: {
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type: String,
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default: 'aspectFill'
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},
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// 头部信息
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header: {
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type: Object,
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default() {
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return {};
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}
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},
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// 额外携带的参数
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formData: {
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type: Object,
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default() {
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return {};
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}
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},
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// 上传的文件字段名
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name: {
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type: String,
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default: 'file'
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},
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// 所选的图片的尺寸, 可选值为original compressed
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sizeType: {
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type: Array,
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default() {
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return ['original', 'compressed'];
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}
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},
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sourceType: {
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type: Array,
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default() {
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return ['album', 'camera'];
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}
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},
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// 是否在点击预览图后展示全屏图片预览
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previewFullImage: {
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type: Boolean,
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default: true
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},
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// 是否开启图片多选，部分安卓机型不支持
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multiple: {
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type: Boolean,
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default: true
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},
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// 是否展示删除按钮
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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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// 文件大小限制，单位为byte
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maxSize: {
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type: [String, Number],
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default: Number.MAX_VALUE
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},
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// 显示已上传的文件列表
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fileList: {
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type: Array,
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default() {
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return [];
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}
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},
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// 上传区域的提示文字
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uploadText: {
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type: String,
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default: '选择图片'
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},
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// 是否自动上传
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autoUpload: {
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type: Boolean,
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default: true
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},
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// 是否显示toast消息提示
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showTips: {
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type: Boolean,
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default: true
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},
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// 是否通过slot自定义传入选择图标的按钮
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customBtn: {
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type: Boolean,
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default: false
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},
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// 内部预览图片区域和选择图片按钮的区域宽度，高等于宽
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width: {
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type: [String, Number],
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default: 200
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},
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// 右上角关闭按钮的背景颜色
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delBgColor: {
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type: String,
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default: '#fa3534'
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},
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// 右上角关闭按钮的叉号图标的颜色
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delColor: {
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type: String,
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default: '#ffffff'
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},
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// 右上角删除图标名称，只能为uView内置图标
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delIcon: {
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type: String,
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default: 'close'
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},
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// 如果上传后的返回值为json字符串，是否自动转json
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toJson: {
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type: Boolean,
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default: true
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},
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// 上传前的钩子，每个文件上传前都会执行
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beforeUpload: {
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type: Function,
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default: null
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},
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// 允许上传的图片后缀
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limitType:{
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type: Array,
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default() {
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return ['png', 'jpg', 'jpeg', 'webp', 'gif'];
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}
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},
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},
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mounted() {},
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data() {
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return {
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lists: [],
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isInCount: true,
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uploading: false
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};
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},
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watch: {
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fileList: {
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immediate: true,
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handler(val) {
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val.map(value => {
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// 首先检查内部是否已经添加过这张图片，因为外部绑定了一个对象给fileList的话(对象引用)，进行修改外部fileList
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// 时，会触发watch，导致重新把原来的图片再次添加到this.lists
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// 数组的some方法意思是，只要数组元素有任意一个元素条件符合，就返回true，而另一个数组的every方法的意思是数组所有元素都符合条件才返回true
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let tmp = this.lists.some(val => {
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return val.url == value.url;
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})
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// 如果内部没有这个图片(tmp为false)，则添加到内部
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!tmp && this.lists.push({ url: value.url, error: false, progress: 100 });
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});
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}
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},
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// 监听lists的变化，发出事件
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lists(n) {
|
|
|
|
|
|
this.$emit('on-list-change', n);
|
|
|
|
|
|
}
|
|
|
|
|
|
},
|
|
|
|
|
|
methods: {
|
|
|
|
|
|
// 清除列表
|
|
|
|
|
|
clear() {
|
|
|
|
|
|
this.lists = [];
|
|
|
|
|
|
},
|
|
|
|
|
|
// 重新上传队列中上传失败的所有文件
|
|
|
|
|
|
reUpload() {
|
|
|
|
|
|
this.uploadFile();
|
|
|
|
|
|
},
|
|
|
|
|
|
// 选择图片
|
|
|
|
|
|
selectFile() {
|
|
|
|
|
|
if (this.disabled) return;
|
|
|
|
|
|
const { name = '', maxCount, multiple, maxSize, sizeType, lists, camera, compressed, maxDuration, sourceType } = this;
|
|
|
|
|
|
let chooseFile = null;
|
|
|
|
|
|
const newMaxCount = maxCount - lists.length;
|
|
|
|
|
|
// 设置为只选择图片的时候使用 chooseImage 来实现
|
|
|
|
|
|
chooseFile = new Promise((resolve, reject) => {
|
|
|
|
|
|
uni.chooseImage({
|
|
|
|
|
|
count: multiple ? (newMaxCount > 9 ? 9 : newMaxCount) : 1,
|
|
|
|
|
|
sourceType: sourceType,
|
|
|
|
|
|
sizeType,
|
|
|
|
|
|
success: resolve,
|
|
|
|
|
|
fail: reject
|
|
|
|
|
|
});
|
|
|
|
|
|
});
|
|
|
|
|
|
chooseFile
|
|
|
|
|
|
.then(res => {
|
|
|
|
|
|
let file = null;
|
|
|
|
|
|
let listOldLength = this.lists.length;
|
|
|
|
|
|
res.tempFiles.map((val, index) => {
|
|
|
|
|
|
// 检查文件后缀是否允许，如果不在this.limitType内，就会返回false
|
|
|
|
|
|
if(!this.checkFileExt(val)) return ;
|
|
|
|
|
|
|
|
|
|
|
|
// 如果是非多选，index大于等于1或者超出最大限制数量时，不处理
|
|
|
|
|
|
if (!multiple && index >= 1) return;
|
|
|
|
|
|
if (val.size > maxSize) {
|
|
|
|
|
|
this.$emit('on-oversize', val, this.lists);
|
|
|
|
|
|
this.showToast('超出允许的文件大小');
|
|
|
|
|
|
} else {
|
|
|
|
|
|
if (maxCount <= lists.length) {
|
|
|
|
|
|
this.$emit('on-exceed', val, this.lists);
|
|
|
|
|
|
this.showToast('超出最大允许的文件个数');
|
|
|
|
|
|
return;
|
|
|
|
|
|
}
|
|
|
|
|
|
lists.push({
|
|
|
|
|
|
url: val.path,
|
|
|
|
|
|
progress: 0,
|
|
|
|
|
|
error: false
|
|
|
|
|
|
});
|
|
|
|
|
|
}
|
|
|
|
|
|
});
|
|
|
|
|
|
// 每次图片选择完，抛出一个事件，并将当前内部选择的图片数组抛出去
|
|
|
|
|
|
this.$emit('on-choose-complete', this.lists);
|
|
|
|
|
|
if (this.autoUpload) this.uploadFile(listOldLength);
|
|
|
|
|
|
})
|
|
|
|
|
|
.catch(error => {
|
|
|
|
|
|
// this.$emit('on-error', error);
|
|
|
|
|
|
});
|
|
|
|
|
|
},
|
|
|
|
|
|
// 提示用户消息
|
|
|
|
|
|
showToast(message, force = false) {
|
|
|
|
|
|
if (this.showTips || force) {
|
|
|
|
|
|
uni.showToast({
|
|
|
|
|
|
title: message,
|
|
|
|
|
|
icon: 'none'
|
|
|
|
|
|
});
|
|
|
|
|
|
}
|
|
|
|
|
|
},
|
|
|
|
|
|
// 该方法供用户通过ref调用，手动上传
|
|
|
|
|
|
upload() {
|
|
|
|
|
|
this.uploadFile();
|
|
|
|
|
|
},
|
|
|
|
|
|
// 对失败的图片重新上传
|
|
|
|
|
|
retry(index) {
|
|
|
|
|
|
this.lists[index].progress = 0;
|
|
|
|
|
|
this.lists[index].error = false;
|
|
|
|
|
|
this.lists[index].response = null;
|
|
|
|
|
|
uni.showLoading({
|
|
|
|
|
|
title: '重新上传'
|
|
|
|
|
|
});
|
|
|
|
|
|
this.uploadFile(index);
|
|
|
|
|
|
},
|
|
|
|
|
|
// 上传图片
|
|
|
|
|
|
async uploadFile(index = 0) {
|
|
|
|
|
|
if (this.disabled) return;
|
|
|
|
|
|
if (this.uploading) return;
|
|
|
|
|
|
// 全部上传完成
|
|
|
|
|
|
if (index >= this.lists.length) {
|
|
|
|
|
|
this.$emit('on-uploaded', this.lists);
|
|
|
|
|
|
return;
|
|
|
|
|
|
}
|
|
|
|
|
|
// 检查是否是已上传或者正在上传中
|
|
|
|
|
|
if (this.lists[index].progress == 100) {
|
|
|
|
|
|
if (this.autoUpload == false) this.uploadFile(index + 1);
|
|
|
|
|
|
return;
|
|
|
|
|
|
}
|
|
|
|
|
|
// 执行before-upload钩子
|
|
|
|
|
|
if(this.beforeUpload && typeof(this.beforeUpload) === 'function') {
|
|
|
|
|
|
// 执行回调，同时传入索引和文件列表当作参数
|
|
|
|
|
|
// 在微信，支付宝等环境(H5正常)，会导致父组件定义的customBack()函数体中的this变成子组件的this
|
|
|
|
|
|
// 通过bind()方法，绑定父组件的this，让this.customBack()的this为父组件的上下文
|
|
|
|
|
|
// 因为upload组件可能会被嵌套在其他组件内，比如u-form，这时this.$parent其实为u-form的this，
|
|
|
|
|
|
// 非页面的this，所以这里需要往上历遍，一直寻找到最顶端的$parent，这里用了this.$u.$parent.call(this)
|
|
|
|
|
|
// 明白意思即可，无需纠结this.$u.$parent.call(this)的细节
|
|
|
|
|
|
let beforeResponse = this.beforeUpload.bind(this.$u.$parent.call(this))(index, this.lists);
|
|
|
|
|
|
// 判断是否返回了promise
|
|
|
|
|
|
if (!!beforeResponse && typeof beforeResponse.then === 'function') {
|
|
|
|
|
|
await beforeResponse.then(res => {
|
|
|
|
|
|
// promise返回成功，不进行动作，继续上传
|
|
|
|
|
|
}).catch(err => {
|
|
|
|
|
|
// 进入catch回调的话，继续下一张
|
|
|
|
|
|
return this.uploadFile(index + 1);
|
|
|
|
|
|
})
|
|
|
|
|
|
} else if(beforeResponse === false) {
|
|
|
|
|
|
// 如果返回false，继续下一张图片的上传
|
|
|
|
|
|
return this.uploadFile(index + 1);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
// 检查上传地址
|
|
|
|
|
|
if (!this.action) {
|
|
|
|
|
|
this.showToast('请配置上传地址', true);
|
|
|
|
|
|
return;
|
|
|
|
|
|
}
|
|
|
|
|
|
this.lists[index].error = false;
|
|
|
|
|
|
this.uploading = true;
|
|
|
|
|
|
// 创建上传对象
|
|
|
|
|
|
const task = uni.uploadFile({
|
|
|
|
|
|
url: this.action,
|
|
|
|
|
|
filePath: this.lists[index].url,
|
|
|
|
|
|
name: this.name,
|
|
|
|
|
|
formData: this.formData,
|
|
|
|
|
|
header: this.header,
|
|
|
|
|
|
success: res => {
|
|
|
|
|
|
// 判断是否json字符串，将其转为json格式
|
|
|
|
|
|
let data = this.toJson && this.$u.test.jsonString(res.data) ? JSON.parse(res.data) : res.data;
|
|
|
|
|
|
if (![200, 201, 204].includes(res.statusCode)) {
|
|
|
|
|
|
this.uploadError(index, data);
|
|
|
|
|
|
} else {
|
|
|
|
|
|
// 上传成功
|
|
|
|
|
|
this.lists[index].response = data;
|
|
|
|
|
|
this.lists[index].progress = 100;
|
|
|
|
|
|
this.lists[index].error = false;
|
|
|
|
|
|
this.$emit('on-success', data, index, this.lists);
|
|
|
|
|
|
}
|
|
|
|
|
|
},
|
|
|
|
|
|
fail: e => {
|
|
|
|
|
|
this.uploadError(index, e);
|
|
|
|
|
|
},
|
|
|
|
|
|
complete: res => {
|
2023-04-11 18:41:34 +08:00
|
|
|
|
if (this.$store.state.isShowToast){ uni.hideLoading() };
|
2021-05-13 11:03:32 +08:00
|
|
|
|
this.uploading = false;
|
|
|
|
|
|
this.uploadFile(index + 1);
|
|
|
|
|
|
this.$emit('on-change', res, index, this.lists);
|
|
|
|
|
|
}
|
|
|
|
|
|
});
|
|
|
|
|
|
task.onProgressUpdate(res => {
|
|
|
|
|
|
if (res.progress > 0) {
|
|
|
|
|
|
this.lists[index].progress = res.progress;
|
|
|
|
|
|
this.$emit('on-progress', res, index, this.lists);
|
|
|
|
|
|
}
|
|
|
|
|
|
});
|
|
|
|
|
|
},
|
|
|
|
|
|
// 上传失败
|
|
|
|
|
|
uploadError(index, err) {
|
|
|
|
|
|
this.lists[index].progress = 0;
|
|
|
|
|
|
this.lists[index].error = true;
|
|
|
|
|
|
this.lists[index].response = null;
|
|
|
|
|
|
this.$emit('on-error', err, index, this.lists);
|
|
|
|
|
|
this.showToast('上传失败，请重试');
|
|
|
|
|
|
},
|
|
|
|
|
|
// 删除一个图片
|
|
|
|
|
|
deleteItem(index) {
|
|
|
|
|
|
uni.showModal({
|
|
|
|
|
|
title: '提示',
|
|
|
|
|
|
content: '您确定要删除此项吗？',
|
|
|
|
|
|
success: res => {
|
|
|
|
|
|
if (res.confirm) {
|
|
|
|
|
|
if (this.lists[index].process < 100 && this.lists[index].process > 0) {
|
|
|
|
|
|
typeof this.lists[index].uploadTask != 'undefined' && this.lists[index].uploadTask.abort();
|
|
|
|
|
|
}
|
|
|
|
|
|
this.lists.splice(index, 1);
|
|
|
|
|
|
this.$forceUpdate();
|
|
|
|
|
|
this.$emit('on-remove', index, this.lists);
|
|
|
|
|
|
this.showToast('移除成功');
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
});
|
|
|
|
|
|
},
|
|
|
|
|
|
// 用户通过ref手动的形式，移除一张图片
|
|
|
|
|
|
remove(index) {
|
|
|
|
|
|
// 判断索引的合法范围
|
|
|
|
|
|
if (index >= 0 && index < this.lists.length) {
|
|
|
|
|
|
this.lists.splice(index, 1);
|
|
|
|
|
|
this.$emit('on-list-change', this.lists);
|
|
|
|
|
|
}
|
|
|
|
|
|
},
|
|
|
|
|
|
// 预览图片
|
|
|
|
|
|
doPreviewImage(url, index) {
|
|
|
|
|
|
if (!this.previewFullImage) return;
|
|
|
|
|
|
const images = this.lists.map(item => item.url || item.path);
|
|
|
|
|
|
uni.previewImage({
|
|
|
|
|
|
urls: images,
|
|
|
|
|
|
current: url,
|
|
|
|
|
|
success: () => {
|
|
|
|
|
|
this.$emit('on-preview', url, this.lists);
|
|
|
|
|
|
},
|
|
|
|
|
|
fail: () => {
|
|
|
|
|
|
uni.showToast({
|
|
|
|
|
|
title: '预览图片失败',
|
|
|
|
|
|
icon: 'none'
|
|
|
|
|
|
});
|
|
|
|
|
|
}
|
|
|
|
|
|
});
|
|
|
|
|
|
},
|
|
|
|
|
|
// 判断文件后缀是否允许
|
|
|
|
|
|
checkFileExt(file) {
|
|
|
|
|
|
// 检查是否在允许的后缀中
|
|
|
|
|
|
let noArrowExt = false;
|
|
|
|
|
|
// 获取后缀名
|
|
|
|
|
|
let fileExt = '';
|
|
|
|
|
|
const reg = /.+\./;
|
|
|
|
|
|
// 如果是H5，需要从name中判断
|
|
|
|
|
|
// #ifdef H5
|
|
|
|
|
|
fileExt = file.name.replace(reg, "").toLowerCase();
|
|
|
|
|
|
// #endif
|
|
|
|
|
|
// 非H5，需要从path中读取后缀
|
|
|
|
|
|
// #ifndef H5
|
|
|
|
|
|
fileExt = file.path.replace(reg, "").toLowerCase();
|
|
|
|
|
|
// #endif
|
|
|
|
|
|
// 使用数组的some方法，只要符合limitType中的一个，就返回true
|
|
|
|
|
|
noArrowExt = this.limitType.some(ext => {
|
|
|
|
|
|
// 转为小写
|
|
|
|
|
|
return ext.toLowerCase() === fileExt;
|
|
|
|
|
|
})
|
|
|
|
|
|
if(!noArrowExt) this.showToast(`不允许选择${fileExt}格式的文件`);
|
|
|
|
|
|
return noArrowExt;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
};
|
|
|
|
|
|
</script>
|
|
|
|
|
|
|
|
|
|
|
|
<style lang="scss" scoped>
|
|
|
|
|
|
@import '../../libs/css/style.components.scss';
|
|
|
|
|
|
|
|
|
|
|
|
.u-upload {
|
|
|
|
|
|
display: flex;
|
|
|
|
|
|
flex-wrap: wrap;
|
|
|
|
|
|
align-items: center;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
.u-list-item {
|
|
|
|
|
|
width: 200rpx;
|
|
|
|
|
|
height: 200rpx;
|
|
|
|
|
|
overflow: hidden;
|
|
|
|
|
|
margin: 10rpx;
|
|
|
|
|
|
background: rgb(244, 245, 246);
|
|
|
|
|
|
position: relative;
|
|
|
|
|
|
border-radius: 10rpx;
|
|
|
|
|
|
display: inline-flex;
|
|
|
|
|
|
align-items: center;
|
|
|
|
|
|
justify-content: center;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
.u-preview-wrap {
|
|
|
|
|
|
border: 1px solid rgb(235, 236, 238);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
.u-add-wrap {
|
|
|
|
|
|
flex-direction: column;
|
|
|
|
|
|
color: $u-content-color;
|
|
|
|
|
|
font-size: 28rpx;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
.u-add-tips {
|
|
|
|
|
|
margin-top: 20rpx;
|
|
|
|
|
|
line-height: 40rpx;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
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.u-add-wrap__hover {
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background-color: rgb(235, 236, 238);
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}
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.u-preview-image {
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display: block;
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width: 100%;
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height: 100%;
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border-radius: 10rpx;
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}
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.u-delete-icon {
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position: absolute;
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top: 10rpx;
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right: 10rpx;
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z-index: 10;
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background-color: $u-type-error;
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border-radius: 100rpx;
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width: 44rpx;
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height: 44rpx;
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display: flex;
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align-items: center;
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justify-content: center;
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}
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.u-icon {
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display: flex;
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align-items: center;
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justify-content: center;
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}
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.u-progress {
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position: absolute;
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bottom: 10rpx;
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left: 8rpx;
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right: 8rpx;
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z-index: 9;
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width: auto;
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}
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.u-error-btn {
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color: #ffffff;
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background-color: $u-type-error;
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font-size: 20rpx;
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padding: 4px 0;
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text-align: center;
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position: absolute;
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bottom: 0;
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left: 0;
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right: 0;
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z-index: 9;
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line-height: 1;
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}
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</style>
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