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>