1、微信小程式端：

（1）index.js

//index.js
//獲取應用例項
const app = getApp()

Page({
  data: {
    motto: '檢測結果：',
    value: '0',
    userInfo: {},
    hasUserInfo: false,
    canIUse: wx.canIUse('button.open-type.getUserInfo'),
    userImage: "/images/jia.png",
    img_arr: [],
  },
  //事件處理函式
  bindViewTap: function() {
    var that = this //！！！！！！！！！“搭橋”

    //利用API從本地讀取一張圖片
    wx.chooseImage({
      count: 1,
      sizeType: ['original', 'compressed'],
      sourceType: ['album', 'camera'],
      success: function (res) {
        var tempFilePaths = res.tempFilePaths
        //將讀取的圖片替換之前的圖片
        that.setData(
          { userImage: tempFilePaths[0],
            img_arr: that.data.img_arr.concat(tempFilePaths[0]),
          }
          )//通過that訪問
          console.log(that.data.userImage)
      }
    })
  },
  changeName: function (e) {
    this.setData({
      value: "xiao",
    })

  },
  upload: function () {
    var that = this
   wx.uploadFile({
        url: 'http://127.0.0.1:8090/postdata',
        // filePath: that.data.img_arr[0],
        filePath: that.data.userImage,
        name: 'content',
        // formData: adds,
        success: function (res) {
          console.log(res.data);
          that.setData({
            value: JSON.parse(res.data)['value'],
            userImage: JSON.parse(res.data)['resurl']
          })
          
          if (res) {
            wx.showToast({
              title: '檢測完成！',
              duration: 3000
            });
          }
        }
      })
    this.setData({
      formdata: ''
    })
  }, 
  takePhoto() {
    var that = this
    wx.chooseImage({
      count: 1, // 預設9
      sizeType: ['original', 'compressed'],
      sourceType: ['camera'],
      success: function (res) {
        var tempFilePaths = res.tempFilePaths
        that.setData(
          {
            userImage: res.tempFilePaths[0],

          })
        console.log("res.tempImagePath" + tempFilePaths[0])
      }
    })
  },
  onLoad: function () {
    if (app.globalData.userInfo) {
      this.setData({
        userInfo: app.globalData.userInfo,
        hasUserInfo: true
      })
    } else if (this.data.canIUse){
      // 由於 getUserInfo 是網路請求，可能會在 Page.onLoad 之後才返回
      // 所以此處加入 callback 以防止這種情況
      app.userInfoReadyCallback = res => {
        this.setData({
          userInfo: res.userInfo,
          hasUserInfo: true
        })
      }
    } else {
      // 在沒有 open-type=getUserInfo 版本的相容處理
      wx.getUserInfo({
        success: res => {
          app.globalData.userInfo = res.userInfo
          this.setData({
            userInfo: res.userInfo,
            hasUserInfo: true
          })
        }
      })
    }
  },
  getUserInfo: function(e) {
    console.log(e)
    app.globalData.userInfo = e.detail.userInfo
    this.setData({
      userInfo: e.detail.userInfo,
      hasUserInfo: true
    })
  }

 
  
})
 

（2）index.wxml

<!--index.wxml-->
<view class="container">
  <view class='imagesize'>
    <image src='{{userImage}}'></image>
    
  </view>
  <view class="usermotto">
    <text>{{motto}}</text>
    <text>{{value}}</text>
  </view>
  <view class='userbtn'>
        <button bindtap='bindViewTap'>選擇影象</button>
        <button bindtap="takePhoto">相機拍照</button>
        <button bindtap="upload"> 開始檢測 </button>
  </view>
</view>
 

（3）index.wxss

/**index.wxss**/
.imagesize{
 display:flex;
 width:100%;
 height: 800rpx;
 justify-content: center;
}
.imagesize image { 
  width:90%;
  height: 800rpx;
}

.usermotto {
  width:100%;
  height: 50rpx;
  text-align: left;
  margin-top: 100px;
}
.userbtn
{
   display:flex;
   width: 92%;
   margin-top: 20rpx;
   justify-content: center;
}
.userbtn button
{
   background-color: #ff8719;
   color: white;
   border-radius: 25rpx;
}
 

2、Python Flask端

from flask import  Flask
from flask import request
import json
import os
import uuid
import cv2

app = Flask(__name__)

@app.route("/")
def index():
    return "Hello"

resSets = {}
@app.route('/postdata', methods=['POST'])
def postdata():
    f = request.files['content']
    user_input = request.form.get("name")
    basepath = os.path.dirname(__file__)  # 當前檔案所在路徑
    src_imgname = str(uuid.uuid1()) + ".jpg"
    upload_path = os.path.join(basepath, 'static/srcImg/')
    if os.path.exists(upload_path)==False:
        os.makedirs(upload_path)
    f.save(upload_path + src_imgname)
    im = cv2.imread(upload_path + src_imgname, 0)
    save_path = os.path.join(basepath, 'static/resImg/')
    if os.path.exists(save_path) == False:
        os.makedirs(save_path)
    save_imgname = str(uuid.uuid1()) + ".jpg"
    cv2.imwrite(save_path + save_imgname, im)
    resSets["value"] = 10
    resSets["resurl"] = "http://127.0.0.1:8090" +'/static/resImg/' + save_imgname
    return json.dumps(resSets, ensure_ascii=False)



if __name__=="__main__":
    app.run(host="0.0.0.0", port=8090)

3、結果