小程序云开发如何实现图片上传及发表文字

<!--pages/pulish/pulish.wxml-->
<view class='flexDownC'>
 <view class='flexDownC w100'> 
 <textarea class='input' bindinput='textInput' placeholder-style='margin-left:20rpx;' maxlength='500' placeholder='和大家一起分享你遇到的趣事,糗事吧' value='{{text}}' auto-focus auto-height></textarea>
 </view>

 <view class='btm flexSpaceBet w100 publishItem'>
 <image src='../../images/pic.png' class='pic' bindtap='doUpload'></image>
 <view class='pulishBtn' bindtap='pulish'> 发布</view>
 
 </view>
 <!-- wx:for='{{imgUrl}}' -->
 <view class='flexCenter w100' wx:if='{{imgUrl}}'>
 <!-- <view wx:for='{{imgUrl}}' class='{{imgUrl.length == 1? "imgUrlClass1": imgUrl.length == 2? "imgUrlClass2": imgUrl.length == 3? "imgUrlClass3": "imgUrlClass4"}}' > -->
  <image src='{{imgUrl}}' class='w100' mode="aspectFit" ></image>
 <!-- </view> -->
 
 </view>
 <!-- <image class='w100' src='cloud://qiupihu-d1e452.7169-qiupihu-d1e452/1451.gif'></image> -->

</view>

/* pages/pulish/pulish.wxss */


.input{
 font-size: 28rpx;
 color: #666;
 width: 100%;
 min-height: 60rpx;
 height: auto;
 border-radius: 10rpx;
 padding: 20rpx;
}

.fl{
 display: flex;
 justify-content: flex-start;
}

.pic{
 width: 64rpx;
 height: 64rpx;
 margin-left: 20rpx;
}

.w100{
 width: 100%;
}

.publishItem{
 margin-top: 80rpx;
 height: 80rpx;
 border-top: 1px solid #ea9518;
 border-bottom: 1px solid #ea9518;
}

.pulishBtn{
 width: 100rpx;
 height: 50rpx;
 color: #fff;
 font-size: 28rpx;
 background: #ea9518;
 border-radius: 0.1;
 text-align: center;
 font-weight: bold;
 margin-right: 20rpx;
 line-height: 50rpx;
}

.h100{
 height: 100rpx;
}


.imgUrlClass2{
 width: 50%;
}

.imgUrlClass1{
 width: 100%;
}


.imgUrlClass3{
 width: 33%;
}

.imgUrlClass4{
 width: 24%;
}

// pages/pulish/pulish.js
var app = getApp()
const db = wx.cloud.database()
const _ = db.command;
Page({

 /**
 * 页面的初始数据
 */
 data: {
 text: '',
 imgUrl: '',
 count: 0
 },

 /**
 * 生命周期函数--监听页面加载
 */
 onLoad: function (options) {
 this.getCount()
 
 },
 onShow: function(){
 let userOpenId = wx.getStorageSync('openId')
 if (!userOpenId) {
  wx.showToast({
  title: '您还未登录,请先登录~',
  icon: 'none'
  })

  setTimeout(() => {
  wx.switchTab({
   url: '../me/me',
  })
  }, 1500)
 } else {
  console.log(userOpenId)
 }
 },
 getCount: function(){
 //已输入的字数
 var that = this
 db.collection('funnys').count({
  success: res => {
  that.setData({
   count: Number(res.total) + 1
  })
  }
 })

 },
 textInput: function(e){
 this.setData({
  text: e.detail.value
 })
 },
 pulish: function(){

 var data = {
  image: new Array(app.globalData.fileID), //将图片储存为数组类型
  content: this.data.text, //用户输入的文字
  comment: [],
  userId: wx.getStorageSync('userId'),
  username: wx.getStorageSync('username'), //用户名
  id: Number(this.data.count) +1, //是现在数据库的条数+1,微信小程序的不知道怎么设置自增的数字字段
  shareNum: 0,
  commentNum: 0,
  validStatus: 0,
  validTime: 0
 }
 //validStatus: 审核状态, 通过时候 +1, 反对时候-1
 //validTime: 审核次数, 最多5次,如果反对的人大于等于3,则不通过

 console.log(data)

 if (data.content){
  db.collection('funnys').add({
   data: data,
   success:res => {
   wx.showToast({
    title: '发布成功',
   })
   setTimeout(()=>{
    
    wx.switchTab({
    url: '../index/index',
    })
   }, 1000)
   },
   fail: e=>{
   wx.showToast({
    title: '发布错误',
   })
   console.log(e)
   }
  })
 }else{
  wx.showToast({
  title: '请填写文字',
  icon: 'none'
  })
 }

 },

 // 上传图片
 //上传的时候，我们可以获得一个fileId，这个id我们必须存起来，在别人查看的时候，image的src使用的就是fileId，然后用户必
 //须得知道上传的是哪张图片呀， 所以我们使用的是本地的图片路径来展示，即imagePath 
 doUpload: function () {
 // 选择图片
 var that = this;
 wx.chooseImage({
  count: 1,
  sizeType: ['compressed'],
  sourceType: ['album', 'camera'],
  success: function (res) {

  wx.showLoading({
   title: '上传中',
  })

  const filePath = res.tempFilePaths[0]
  that.setData({
   imgUrl: filePath
  })
  // 上传图片
  const cloudPath = that.data.count + filePath.match(/\.[^.]+?$/)[0]
  //改写: 数组 多图片
  // const filePath = res.tempFilePaths, cloudPath = [];
  // filePath.forEach((item, i)=>{
  // cloudPath.push(that.data.count + '_' + i + filePath[i].match(/\.[^.]+?$/)[0])
  // })
   
  console.log(cloudPath)


  // filePath.forEach((item, i) => {
   wx.cloud.uploadFile({
   cloudPath,
   filePath,
   success: res => {
    console.log('[上传文件] 成功：', cloudPath, res)

    app.globalData.fileID = res.fileID
    app.globalData.cloudPath = cloudPath
    app.globalData.imagePath = filePath
    
   },
   fail: e => {
    console.error('[上传文件] 失败：', e)
    wx.showToast({
    icon: 'none',
    title: '上传失败',
    })
   },
   complete: () => {
    wx.hideLoading()
   }
   })
  // })

  },
  fail: e => {
  console.error(e)
  }
 })
 },
 /**
 * 用户点击右上角分享
 */
 onShareAppMessage: function () {

 }
})