UniApp+uView实现图片上传后的二进制文件转换成Base64格式并进行双向绑定。
unaipp由于兼容了多平台,但多平台对base64转化是不一样的。
微信小程序端
uni.getFileSystemManager().readFile({ filePath: path, // 要读取的文件路径 encoding: 'base64', // 编码格式 success: res => { let base64 = 'data:'+type+';base64,'+res.data resolve(base64); }, fail: err => { reject(err) } })
H5网页端
uni.request({ url: path, method: 'GET', responseType: 'arraybuffer', success: res => { let base64 = uni.arrayBufferToBase64(res.data); //把arraybuffer转成base64 base64 = 'data:'+type+';base64,' + base64 //不加上这串字符,在页面无法显示的 resolve(base64) }, fail: err => { reject(err) } })
APP端用
return new Promise((resolve, reject) => { plus.io.resolveLocalFileSystemURL(path, function(entry) { entry.file(function(file) { var fileReader = new plus.io.FileReader(); //alert("getFile:" + JSON.stringify(file)); fileReader.readAsDataURL(file); fileReader.onloadend = function(evt) { // base64字符串 resolve(evt.target.result); } }) }) })
为此我们进行了组件库的扩展
<template> <view class="u-upload"> <view v-if="showUploadList" class="u-list-item u-preview-wrap" v-for="(item, index) in lists" :key="index" :style="{ marginTop: 0, marginLeft: 0, marginRight: $u.addUnit(margin), marginBottom: $u.addUnit(margin), width: $u.addUnit(width), height: $u.addUnit(height) }" > <view v-if="deletable&&!disabled" class="u-delete-icon" @tap.stop="deleteItem(index)" :style="{ background: delBgColor }" > <u-icon class="u-icon" :name="delIcon" size="20" :color="delColor"></u-icon> </view> <!-- <view v-if="item.progress >= 100" class="u-success-icon" > <u-icon class="u-icon" :name="successIcon" size="20" :color="successColor"></u-icon> </view> --> <u-line-progress v-if="showProgress && item.progress > 0 && item.progress != 100 && !item.error" :show-percent="false" height="16" class="u-progress" :percent="item.progress" ></u-line-progress> <view @tap.stop="retry(index)" v-if="item.error" class="u-error-btn">点击重试</view> <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> </view> <slot name="file" :file="lists"></slot> <view style="display: inline-block;" @tap="selectFile" v-if="maxCount > lists.length&&!disabled"> <slot name="addBtn"></slot> <view v-if="!customBtn" class="u-list-item u-add-wrap" hover-class="u-add-wrap__hover" hover-stay-time="150" :style="{ marginTop: 0, marginLeft: 0, marginRight: $u.addUnit(margin), marginBottom: $u.addUnit(margin), width: $u.addUnit(width), height: $u.addUnit(height) }" > <u-icon name="camera" class="u-add-btn" size="60"></u-icon> <!-- <view class="u-add-tips">{{ uploadText }}</view> --> </view> </view> </view> </template> <script> import Emitter from "../../libs/util/emitter.js"; /** * upload 图片上传 * @description 该组件用于上传图片场景 * @tutorial https://www.uviewui.com/components/upload.html * @property {String} action 服务器上传地址 * @property {String Number} max-count 最大选择图片的数量(默认99) * @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) * @property {Boolean} show-progress 是否显示进度条(默认true) * @property {Boolean} disabled 是否启用(显示/移仓)组件(默认false) * @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) * @property {String} del-icon 右上角删除图标名称,只能为uView内置图标 * @property {String} del-bg-color 右上角关闭按钮的背景颜色 * @property {String | Number} index 在各个回调事件中的最后一个参数返回,用于区别是哪一个组件的事件 * @property {String} del-color 右上角关闭按钮图标的颜色 * @property {Object} header 上传携带的头信息,对象形式 * @property {Object} form-data 上传额外携带的参数 * @property {String} name 上传文件的字段名,供后端获取使用(默认file) * @property {Array<String>} size-type original 原图,compressed 压缩图,默认二者都有(默认['original', 'compressed']) * @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']) * @property {Boolean} preview-full-image 是否可以通过uni.previewImage预览已选择的图片(默认true) * @property {Boolean} multiple 是否开启图片多选,部分安卓机型不支持(默认true) * @property {Boolean} deletable 是否显示删除图片的按钮(默认true) * @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) * @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 * @property {Boolean} upload-text 选择图片按钮的提示文字(默认“选择图片”) * @property {Boolean} auto-upload 选择完图片是否自动上传,见上方说明(默认true) * @property {Boolean} show-tips 特殊情况下是否自动提示toast,见上方说明(默认true) * @property {Boolean} show-upload-list 是否显示组件内部的图片预览(默认true) * @event {Function} on-oversize 图片大小超出最大允许大小 * @event {Function} on-preview 全屏预览图片时触发 * @event {Function} on-remove 移除图片时触发 * @event {Function} on-success 图片上传成功时触发 * @event {Function} on-change 图片上传后,无论成功或者失败都会触发 * @event {Function} on-error 图片上传失败时触发 * @event {Function} on-progress 图片上传过程中的进度变化过程触发 * @event {Function} on-uploaded 所有图片上传完毕触发 * @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 * @event {Function} on-list-change 当内部文件列表被加入文件、移除文件,或手动调用clear方法时触发 * @event {Function} on-choose-fail 选择文件出错时触发,比如选择文件时取消了操作,只在微信和APP有效 * @example <u-upload :action="action" :file-list="fileList" ></u-upload> */ export default { name: "u-upload", mixins: [Emitter], emits: ["update:modelValue", "change","update:file-list", "on-oversize", "on-list-change", "on-preview", "on-remove", "on-success", "on-change", "on-error", "on-progress", "on-uploaded", "on-choose-complete", "on-choose-fail"], props: { value: { type: [String, Array], default: "" }, modelValue: { type: [String, Array], default: "" }, //是否显示组件自带的图片预览功能 showUploadList: { type: Boolean, default: true }, // 后端地址 action: { type: String, default: "" }, // 最大上传数量 maxCount: { type: [String, Number], default: 52 }, // 是否显示进度条 showProgress: { type: Boolean, default: true }, // 是否启用 disabled: { type: Boolean, default: false }, // 预览上传的图片时的裁剪模式,和image组件mode属性一致 imageMode: { type: String, default: "aspectFill" }, // 头部信息 header: { type: Object, default() { return {}; } }, // 额外携带的参数 formData: { type: Object, default() { return {}; } }, // 上传的文件字段名 name: { type: String, default: "file" }, // 所选的图片的尺寸, 可选值为original compressed sizeType: { type: Array, default() { return ["original", "compressed"]; } }, sourceType: { type: Array, default() { return ["album", "camera"]; } }, // 是否在点击预览图后展示全屏图片预览 previewFullImage: { type: Boolean, default: true }, // 是否开启图片多选,部分安卓机型不支持 multiple: { type: Boolean, default: true }, // 是否展示删除按钮 deletable: { type: Boolean, default: true }, // 文件大小限制,单位为byte maxSize: { type: [String, Number], default: Number.MAX_VALUE }, // 显示已上传的文件列表 fileList: { type: Array, default() { return []; } }, // 上传区域的提示文字 uploadText: { type: String, default: "选择图片" }, // 是否自动上传 autoUpload: { type: Boolean, default: true }, //是否图片转base64 base64:{ type: Boolean, default: true }, // 是否显示toast消息提示 showTips: { type: Boolean, default: true }, // 是否通过slot自定义传入选择图标的按钮 customBtn: { type: Boolean, default: false }, // 内部预览图片区域和选择图片按钮的区域宽度 width: { type: [String, Number], default: 200 }, // 内部预览图片区域和选择图片按钮的区域高度 height: { type: [String, Number], default: 200 }, // 右上角关闭按钮的背景颜色 delBgColor: { type: String, default: "#fa3534" }, // 右上角关闭按钮的叉号图标的颜色 delColor: { type: String, default: "#ffffff" }, // 右上角删除图标名称,只能为uView内置图标 delIcon: { type: String, default: "close" }, // 右下角成功图标名称,只能为uView内置图标 successIcon: { type: String, default: "checkbox-mark" }, // 右下角成功的叉号图标的颜色 successColor: { type: String, default: "#ffffff" }, // 如果上传后的返回值为json字符串,是否自动转json toJson: { type: Boolean, default: true }, // 上传前的钩子,每个文件上传前都会执行 beforeUpload: { type: Function, default: null }, // 移除文件前的钩子 beforeRemove: { type: Function, default: null }, // 允许上传的图片后缀 limitType: { type: Array, default() { // 支付宝小程序真机选择图片的后缀为"image" // https://opendocs.alipay.com/mini/api/media-image return ["png", "jpg", "jpeg", "webp", "gif", "image"]; } }, // 在各个回调事件中的最后一个参数返回,用于区别是哪一个组件的事件 index: { type: [Number, String], default: "" }, margin:{ type: [Number, String], default: "10" } }, mounted() { let parent = this.$u.$parent.call(this, 'u-form'); if (parent) { Object.keys(this.uForm).map(key => { this.uForm[key] = parent[key]; }); } }, data() { return { lists: [], isInCount: true, uploading: false, uForm:{ inputAlign: "", clearable: "" } }; }, computed: { valueCom() { // #ifndef VUE3 return this.value; // #endif // #ifdef VUE3 return this.modelValue; // #endif } }, watch: { valueCom(nVal, oVal) { if(nVal){ if(nVal!=oVal){ this.initValue(nVal) } }else{ this.lists = [] } }, fileList: { immediate: true, handler(val) { let that = this; let lists = JSON.parse(JSON.stringify(that.lists)); val.map(value => { // 首先检查内部是否已经添加过这张图片,因为外部绑定了一个对象给fileList的话(对象引用),进行修改外部fileList // 时,会触发watch,导致重新把原来的图片再次添加到this.lists // 数组的some方法意思是,只要数组元素有任意一个元素条件符合,就返回true,而另一个数组的every方法的意思是数组所有元素都符合条件才返回true let tmp = lists.some(val => { return val.url == value.url; }); // 如果内部没有这个图片(tmp为false),则添加到内部 if (!tmp) { let url = ''; if(value.url.indexOf(";base64,")>0){ url = value.url; }else{ url = getApp().globalData.currentPage && getApp().globalData.currentPage.$tools? getApp().globalData.currentPage.$tools.renderImage(value.url):value.url } } }); that.lists = JSON.parse(JSON.stringify(lists)); } }, // 监听lists的变化,发出事件 lists: { deep: true, handler(n) { this.$emit("update:file-list", n); let datas = n .filter((item) => { return item && item.url; }) .map((item) => { return item.url; }); let value = this.base64 && this.maxCount > 1? datas :datas.join(",") this.$emit("update:modelValue", value); this.$emit("change", value); setTimeout(() => { // 将当前的值发送到 u-form-item 进行校验 this.dispatch("u-form-item", "onFieldChange"); }, 40); this.$emit("on-list-change", n, this.index); } } }, created() { // 监听u-form-item发出的错误事件,将输入框边框变红色 // #ifndef VUE3 this.$on("onFormItemError", this.onFormItemError); // #endif if(this.valueCom){ this.initValue(this.valueCom) } }, methods: { initValue(nVal){ if(!nVal){ this.lists = [] }else if(this.base64){ if(Array.isArray(nVal)){ if(nVal.length==0){ this.lists = [] }else{ this.lists = nVal.map(item=>{ return {url:item} }) } }else{ this.lists = [{url:nVal}] } }else{ this.lists = nVal.split(",").map(item=>{ return {url:item} }) } }, // 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() { let that = this; if (that.disabled) return; const { name = "", maxCount, multiple, maxSize, sizeType, camera, compressed, maxDuration, sourceType } = that; let chooseFile = null; let lists = JSON.parse(JSON.stringify(that.lists)); 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 = that.lists.length; res.tempFiles.map((val, index) => { // 检查文件后缀是否允许,如果不在that.limitType内,就会返回false if (!that.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) { that.$emit("on-oversize", val, that.lists, that.index); that.showToast("超出允许的文件大小"); } else { if (maxCount <= lists.length) { that.$emit("on-exceed", val, that.lists, that.index); that.showToast("超出最大允许的文件个数"); return; } lists.push({ type:val.type, url: val.path, progress: 0, error: false, file: val }); } }); // 这样实现深拷贝会导致在H5中file为空对象 // that.lists = JSON.parse(JSON.stringify(lists)); that.deepClone(lists, that.lists); // 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 that.$emit("on-choose-complete", that.lists, that.index); // else{ if (that.autoUpload) that.uploadFile(listOldLength); // } }) .catch(error => { that.$emit("on-choose-fail", 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); }, imageToBase64(path,type) { if(uni.getFileSystemManager){ return new Promise((resolve, reject) => { uni.getFileSystemManager().readFile({ filePath: path, // 要读取的文件路径 encoding: 'base64', // 编码格式 success: res => { let base64 = 'data:'+type+';base64,'+res.data resolve(base64); }, fail: err => { reject(err) } }) }) }else{ // #ifdef APP-PLUS return new Promise((resolve, reject) => { plus.io.resolveLocalFileSystemURL(path, function(entry) { entry.file(function(file) { var fileReader = new plus.io.FileReader(); //alert("getFile:" + JSON.stringify(file)); fileReader.readAsDataURL(file); fileReader.onloadend = function(evt) { // base64字符串 resolve(evt.target.result); } }) }) }) // #endif // #ifdef H5 return new Promise((resolve, reject) => { uni.request({ url: path, method: 'GET', responseType: 'arraybuffer', success: res => { let base64 = uni.arrayBufferToBase64(res.data); //把arraybuffer转成base64 base64 = 'data:'+type+';base64,' + base64 //不加上这串字符,在页面无法显示的 resolve(base64) }, fail: err => { reject(err) } }) }) // #endif } }, // 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.$emit("on-uploaded", this.lists, this.index); return; } // 检查是否是已上传或者正在上传中 if (this.lists[index].progress == 100) { if (this.autoUpload == false) this.uploadFile(index + 1); return; } // 执行before-upload钩子 if (this.beforeUpload && typeof this.beforeUpload === "function") { // 执行回调,同时传入索引和文件列表当作参数 // 在微信,支付宝等环境(H5正常),会导致父组件定义的customBack()函数体中的this变成子组件的this // 通过bind()方法,绑定父组件的this,让this.customBack()的this为父组件的上下文 // 因为upload组件可能会被嵌套在其他组件内,比如u-form,这时this.$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.$parent.call(this))(index, this.lists); // 判断是否返回了promise if (!!beforeResponse && typeof beforeResponse.then === "function") { await beforeResponse .then(res => { // promise返回成功,不进行动作,继续上传 }) .catch(err => { // 进入catch回调的话,继续下一张 return this.uploadFile(index + 1); }); } else if (beforeResponse === false) { // 如果返回false,继续下一张图片的上传 return this.uploadFile(index + 1); } else { // 此处为返回"true"的情形,这里不写代码,就跳过此处,继续执行当前的上传逻辑 } } if(this.base64){ // 上传成功 let url = await this.imageToBase64(this.lists[index].url,this.lists[index].type?this.lists[index].type:"image/png") let data = {url:url}; this.lists[index].url = url this.lists[index].response = data; this.lists[index].progress = 100; this.lists[index].error = false; this.$emit("on-success", data, index, this.lists, this.index); this.uploading = false; this.$emit("on-change", data, index, this.lists, this.index); return this.uploadFile(index + 1); } // 检查上传地址 if (!this.action) { this.showToast("请配置上传地址", true); return; } this.lists[index].error = false; this.uploading = true; if(getApp().globalData.currentPage && getApp().globalData.currentPage.$session){ this.header.Authorization = getApp().globalData.currentPage.$session.getToken()||'' } // 创建上传对象 const task = uni.uploadFile({ url: getApp().globalData.currentPage && getApp().globalData.currentPage.$http?getApp().globalData.currentPage.$http.setUrl(this.action,{}):this.action, filePath: this.lists[index].url, name: this.name, formData: this.formData, header: this.header, success: res => { // 判断是否json字符串,将其转为json格式 let data = this.toJson && this.$u.test.jsonString(res.data) ? JSON.parse(res.data) : res.data; //如果是非空或者 if(!data|| (data&&data.code==401)){ console.log("请返回正确结构数据比如:{code:200,data:{url:'图片路径'}}") this.uploadError(index, data); //如果返回的code是401表示登录超时,跳到首页 if(data&&data.code==401){ getApp().globalData.currentPage.$session.clearUser(); uni.reLaunch({ url: getApp().globalData.homePage }); } return; } // 兼容diygw可视化 if(!data.url && data.data){ data = data.data } if (![200, 201, 204].includes(res.statusCode)) { this.uploadError(index, data); } else { if(!data.url){ console.log("请返回正确结构数据比如:{code:200,data:{url:'图片路径'}}") this.uploadError(index, data); return; } // 上传成功 this.lists[index].url = getApp().globalData.currentPage && getApp().globalData.currentPage.$tools? getApp().globalData.currentPage.$tools.renderImage(data.url):data.url this.lists[index].response = data; this.lists[index].progress = 100; this.lists[index].error = false; this.$emit("on-success", data, index, this.lists, this.index); } }, fail: e => { this.uploadError(index, e); }, complete: res => { uni.hideLoading(); this.uploading = false; this.uploadFile(index + 1); this.$emit("on-change", res, index, this.lists, this.index); } }); task.onProgressUpdate(res => { if (res.progress > 0) { this.lists[index].progress = res.progress; this.$emit("on-progress", res, index, this.lists, this.index); } }); }, // 上传失败 uploadError(index, err) { this.lists[index].progress = 0; this.lists[index].error = true; this.lists[index].response = null; this.$emit("on-error", err, index, this.lists, this.index); this.showToast("上传失败,请重试"); }, // 删除一个图片 deleteItem(index) { uni.showModal({ title: "提示", content: "您确定要删除此项吗?", success: async res => { if (res.confirm) { // 先检查是否有定义before-remove移除前钩子 // 执行before-remove钩子 if (this.beforeRemove && typeof this.beforeRemove === "function") { // 此处钩子执行 原理同before-remove参数,见上方注释 let beforeResponse = this.beforeRemove.bind(this.$u.$parent.call(this))(index, this.lists); // 判断是否返回了promise if (!!beforeResponse && typeof beforeResponse.then === "function") { await beforeResponse .then(res => { // promise返回成功,不进行动作,继续上传 this.handlerDeleteItem(index); }) .catch(err => { // 如果进入promise的reject,终止删除操作 this.showToast("已终止移除"); }); } else if (beforeResponse === false) { // 返回false,终止删除 this.showToast("已终止移除"); } else { // 如果返回true,执行删除操作 this.handlerDeleteItem(index); } } else { // 如果不存在before-remove钩子, this.handlerDeleteItem(index); } } } }); }, // 执行移除图片的动作,上方代码只是判断是否可以移除 handlerDeleteItem(index) { // 如果文件正在上传中,终止上传任务,进度在0 < progress < 100则意味着正在上传 if (this.lists[index].progress < 100 && this.lists[index].progress > 0) { typeof this.lists[index].uploadTask != 'undefined' && this.lists[index].uploadTask.abort(); } this.lists.splice(index, 1); this.$forceUpdate(); this.$emit("on-remove", index, this.lists, this.index); //this.showToast('移除成功'); }, // 用户通过ref手动的形式,移除一张图片 remove(index) { // 判断索引的合法范围 if (index >= 0 && index < this.lists.length) { this.lists.splice(index, 1); } }, // 预览图片 doPreviewImage(url, index) { if (!this.previewFullImage) { this.$emit("on-preview", url, this.lists, this.index); return; } const images = this.lists.map(item => item.url || item.path); uni.previewImage({ urls: images, current: url, success: () => { this.$emit("on-preview", url, this.lists, this.index); }, fail: () => { uni.showToast({ title: "预览图片失败", icon: "none" }); } }); }, // 判断文件后缀是否允许 checkFileExt(file) { // 检查是否在允许的后缀中 let noArrowExt = false; // 获取后缀名 let fileExt = ""; const reg = /.+\./; // 如果是H5,需要从name中判断 // #ifdef H5 fileExt = file.name.replace(reg, "").toLowerCase(); // #endif // 非H5,需要从path中读取后缀 // #ifndef H5 fileExt = file.path.replace(reg, "").toLowerCase(); // #endif // 使用数组的some方法,只要符合limitType中的一个,就返回true noArrowExt = this.limitType.some(ext => { // 转为小写 return ext.toLowerCase() === fileExt; }); if (!noArrowExt) this.showToast(`不允许选择${fileExt}格式的文件`); return noArrowExt; }, // 深拷贝 deepClone(obj, newObj) { for (let k in obj) { const value = obj[k]; if (Array.isArray(value)) { newObj[k] = []; this.deepClone(value, newObj[k]); } else if (value !== null && typeof value === "object") { newObj[k] = {}; this.deepClone(value, newObj[k]); } else { newObj[k] = value; } } } } }; </script> <style lang="scss" scoped> @import "../../libs/css/style.components.scss"; .u-upload { @include vue-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; /* #ifndef APP-NVUE */ display: flex; /* #endif */ 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: 26rpx; } .u-add-tips { margin-top: 20rpx; line-height: 40rpx; } .u-add-wrap__hover { background-color: rgb(235, 236, 238); } .u-preview-image { display: block; width: 100%; height: 100%; border-radius: 10rpx; } .u-delete-icon { position: absolute; top: 6rpx; right: 6rpx; z-index: 10; background-color: $u-type-error; border-radius: 100rpx; width: 36rpx; height: 36rpx; @include vue-flex; align-items: center; justify-content: center; } .u-icon { @include vue-flex; align-items: center; justify-content: center; } .u-success-icon { position: absolute; bottom: 6rpx; right: 6rpx; z-index: 10; background-color: #5ac725; border-radius: 100rpx; width: 36rpx; height: 36rpx; @include vue-flex; align-items: center; justify-content: center; } .u-progress { position: absolute; bottom: 10rpx; left: 8rpx; right: 8rpx; z-index: 9; width: auto; } .u-add-btn{ color:#dcdee0 } .u-error-btn { color: #ffffff; background-color: $u-type-error; font-size: 20rpx; padding: 4px 0; text-align: center; position: absolute; bottom: 0; left: 0; right: 0; z-index: 9; line-height: 1; } </style>
使用也是非常的简单
<template> <view class="container container21094"> <view class="diygw-col-24"> 内容 </view> <u-form-item class="diygw-col-24" label="标题" prop="upload"> <u-upload :base64="true" width="160" height="160" maxCount="3" @on-success="uploadUpload" @on-remove="delUpload" action="" v-model="upload"> </u-upload> </u-form-item> <u-form-item class="diygw-col-24" label="标题" prop="upload1"> <u-upload :base64="true" width="160" height="160" margin="0" maxCount="1" @on-success="uploadUpload1" @on-remove="delUpload1" action="" v-model="upload1"> </u-upload> </u-form-item> <view class="clearfix"></view> </view> </template> <script> export default { data() { return { //用户全局信息 userInfo: {}, //页面传参 globalOption: {}, //自定义全局变量 globalData: {}, data: { code: 0, msg: '', data: [ { title: '', remark: '', id: 0, attr: { title: '' }, img: '' } ] }, upload: [], upload1: '' }; }, onShow() { this.setCurrentPage(this); }, onLoad(option) { this.setCurrentPage(this); if (option) { this.setData({ globalOption: this.getOption(option) }); } this.init(); }, methods: { async init() { }, changeUpload(lists) {}, delUpload(index, lists) { this.changeUpload(lists); }, uploadUpload(res, index, lists) { this.changeUpload(lists); }, changeUpload1(lists) {}, delUpload1(index, lists) { this.changeUpload1(lists); }, uploadUpload1(res, index, lists) { this.changeUpload1(lists); } } }; </script> <style lang="scss" scoped> .container21094 { padding-left: 0px; padding-right: 0px; } .container21094 { } </style>