这是第三个版本了。
通过promise异步实现发布多个图片,具体要发布图片,前端和js都需要改数量限制,最大值为9。
发现之前的方法已经过时,能用就行我也懒得换了,关于图片上传过大,影响上传速度以及主页展示渲染速度,影响体验,所以我加了一个压缩的方法。
小程序选择图片的一次或者多次选择,但是上传只能一张一张上传,使用使用promise和for循环实现,一张一张上传,上传一张后,返回图片在云存储的地址,然后把他保存到一个数组,一直拼接,直到for循环结束,为了方便云存储管理,我把路径做了动态管理,以年月日为路径。文章来源:https://www.toymoban.com/news/detail-567212.html
Page({
/**
* 页面的初始数据
*/
data: {
imgList: [],
fileIDs: [],
title: '',
content: '',
chongfu:true,//设置的timeout定时器防止短时间重复点击
imgt:[],//图片压缩路径
address:{}//使用request获取的地理位置信息
},
onLoad(options) {
},
title_input(e) {
var title = e.detail.value
console.log(title)
this.setData({
title: title
})
},
content_input(e) {
var content = e.detail.value
console.log(content)
this.setData({
content: content
})
},
//选择图片
ChooseImage() {
var that = this
var promise1 = new Promise((resolve, reject) => {
wx.chooseImage({
count: 9 - this.data.imgList.length, //默认9,我们这里最多选择6张
sizeType: ['compressed'], //可以指定是原图还是压缩图,这里用压缩
sourceType: ['album', 'camera'], //从相册选择
success: (res) => {
if (that.data.imgList.length != 0) {
that.setData({
imgList: that.data.imgList.concat(res.tempFilePaths)
})
} else {
that.setData({
imgList: res.tempFilePaths
})
}
console.log("路径", that.data.imgList)
console.log("选择图片成功", res)
resolve()
}
});
})
Promise.all([promise1, ]).then(res => {
for (var i = 0; i < that.data.imgList.length; i++) {
wx.compressImage({ //图片压缩
src: that.data.imgList[i], // 图片路径
quality: 50 // 压缩质量
}).then(res => {
console.log("压缩成功", res)
that.setData({
imgt: that.data.imgt.concat(res.tempFilePath)
})
if (that.data.imgList.length - 1 == i)
that.setData({
imgList: that.data.imgt
})
})
}
})
},
//删除图片
DeleteImg(e) {
wx.showModal({
title: '要删除这张照片吗?',
content: '',
cancelText: '取消',
confirmText: '确定',
success: res => {
if (res.confirm) {
this.data.imgList.splice(e.currentTarget.dataset.index, 1);
this.setData({
imgList: this.data.imgList
})
}
}
})
},
//上传数据
fabu(e) {
var that = this
that.setData({
chongfu: false
})
setTimeout(function () {
that.setData({
chongfu: true
})
}, 2000);
let account = wx.getStorageSync('account')
//console.log(account)
if (!account || !account.name) {
wx.showToast({
icon: 'error',
title: '请先登陆',
})
setTimeout(() => {
wx.navigateTo({
url: '/pages/demo04/demo04',
})
}, 1000);
return
}
if (!that.data.content || that.data.content.length < 6) {
wx.showToast({
icon: "error",
title: '内容必须大于6个字'
})
return
}
wx.showLoading({
title: '发布中...',
})
wx.request({
url: 'https://ip.useragentinfo.com/json',
success: function (res) {
///console.log(res.data)
that.setData({
address:res.data
})
}
})
var date = new Date();
var Y = date.getFullYear();
var M = date.getMonth() + 1;
var D = date.getDate() < 10 ? '0' + date.getDate() : date.getDate();
var H = date.getHours()
var min = date.getMinutes()
var second=date.getSeconds()
if (min < 10) {
min = '0' + min
}
if (M < 10) {
M = '0' + M
}
var tiezi_fabu_time ={}
tiezi_fabu_time.Y=Y
tiezi_fabu_time.M=M
tiezi_fabu_time.D=D
tiezi_fabu_time.H=H
tiezi_fabu_time.min=min
var langtime=Date.parse(new Date())
// let tiezi_fabu_time = Y + "-" + M + "-" + D + " " + H + ":" + min
const promiseArr = []
//只能一张张上传 遍历临时的图片数组
for (let i = 0; i < that.data.imgList.length; i++) {
let filePath = that.data.imgList[i]
let suffix = /\.[^\.]+$/.exec(filePath)[0]; // 正则表达式,获取文件扩展名
//在每次上传的时候,就往promiseArr里存一个promise,只有当所有的都返回结果时,才可以继续往下执行
promiseArr.push(new Promise((reslove, reject) => {
wx.cloud.uploadFile({
cloudPath: '图片/帖子/帖子上传图片/' + Y + '/' + M + '/' + D + '/' + new Date().getTime() + suffix,
filePath: filePath, // 文件路径
}).then(res => {
// get resource ID
console.log("上传结果", res.fileID)
that.setData({
fileIDs: that.data.fileIDs.concat(res.fileID)
})
reslove()
}).catch(error => {
console.log("上传失败", error)
})
}))
}
//保证所有图片都上传成功
let db = wx.cloud.database()
Promise.all(promiseArr).then(res => {
db.collection('tiezi').add({
data: {
title: that.data.title,
content: that.data.content,
tiezi_fabu_time: tiezi_fabu_time,
touxiangurl: wx.getStorageSync('account').touxiangurl,
imageurl: that.data.fileIDs,
account_id: wx.getStorageSync('account')._id,
name: wx.getStorageSync('account').name,
address:that.data.address,
school: that.data.school,
langtime:langtime,
dianzan:0,
shoucang:0,
comments: [],
},
success: res => {
wx.hideLoading()
wx.showToast({
title: '发布成功',
})
//清空数据
this.setData({
imgList: [],
fileIDs: [],
})
console.log('发布成功', res)
wx.navigateBack({
delta: 1,
})
},
fail: err => {
wx.hideLoading()
wx.showToast({
icon: 'error',
title: '网络不给力....'
})
console.error('发布失败', err)
}
})
})
},
})
<view style="margin: 25rpx;display: flex;flex-direction: column;background-color: #ffffff;padding: 20rpx;border-radius: 35rpx;">
<view style="display: flex;flex-direction: row;justify-content: space-between;width: 100%;align-items: center;">
<input bindinput="title_input" placeholder="标题可有可无" style="width: 90%;padding-bottom: 15rpx;" maxlength="15" />
</view>
<textarea bindinput="content_input" placeholder="重要的是分享你的想法..." type="text" maxlength="500" style="word-break: break-all;white-space: pre-wrap;;width: 100%;padding-top: 15rpx;border-top: 1px solid #f5f5f5;"></textarea>
</view>
<view style="background-color: #ffffff;padding: 30rpx;margin: 25rpx;border-radius: 40rpx;">
<view class="imageRootAll">
<block wx:for="{{imgList}}" wx:key="index">
<view class="imgItem">
<image class="img" src='{{item}}' mode='aspectFill'></image>
<image class="closeImg" bindtap="DeleteImg" src="/images/close.png" data-index="{{index}}" />
</view>
</block>
<!-- 选择图片按钮 -->
<view wx:if="{{imgList.length<6}}" class="imgItem" bindtap="ChooseImage">
<image class="photo" src="../../images/photo.png"></image>
</view>
</view>
</view>
<view style="justify-content: center;display: flex;">
<view bindtap="{{chongfu==true?'fabu':''}}" style="word-break: keep-all;color: #ffffff;background-color: #0052FA;padding: 12rpx 20rpx 12rpx 20rpx;border-radius: 40rpx;font-size: 35rpx;width: 140rpx;text-align: center;">publish</view>
</view>
page {
background-color: #F3F4F9;
}
.fabu {
display: flex;
float: right;
margin-right: 10rpx;
color: #A9A9A9;
font-size: 40rpx;
}
.title_input {
width: 100%;
border-bottom: 1px solid #DCDCDC;
margin: 30rpx;
}
.content_input {
margin: 30rpx;
}
.img_box {
display: flex;
flex-wrap: wrap;
margin: 0rpx;
}
.img_item_i {
display: block;
width: 100%;
height: 100%;
}
.img_item {
width: 210rpx;
height: 210rpx;
position: relative;
margin-right: 2%;
margin-bottom: 2%;
border: 1px solid #c0ccda;
}
.closeImv {
position: absolute;
right: 0rpx;
top: 0rpx;
width: 35rpx;
height: 35rpx;
color: #fff;
background-color: red;
border-radius: 50%;
text-align: center;
line-height: 30rpx;
font-weight: 600;
}
.imageRootAll {
margin: 6rpx;
display: flex;
display: -webkit-flex;
flex-direction: row;
justify-content: flex-start;
align-items: center;
flex-wrap: wrap;
}
.imgItem {
margin: 6rpx;
position: relative;
width: 200rpx;
height: 200rpx;
background: gainsboro;
margin-top: 50rpx;
}
.img {
width: 100%;
height: 100%;
}
.closeImg {
position: absolute;
right: 0px;
width: 40rpx;
height: 40rpx;
}
.photo {
width: 50%;
height: 50%;
margin: 25%;
}
![微信小程序发布页面代码,微信小程序,小程序,Powered by 金山文档](https://imgs.yssmx.com/Uploads/2023/07/567212-1.png)
![微信小程序发布页面代码,微信小程序,小程序,Powered by 金山文档](https://imgs.yssmx.com/Uploads/2023/07/567212-2.png)
![微信小程序发布页面代码,微信小程序,小程序,Powered by 金山文档](https://imgs.yssmx.com/Uploads/2023/07/567212-3.png)
就到这里。文章来源地址https://www.toymoban.com/news/detail-567212.html
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