linkHelper1/pages/qrcode/qrcode.js

// pages/qrcode/qrcode.js
const app = getApp()
Page({
  /**
   * 页面的初始数据
   */
  data: {
    word: '',
    from: '',
    canvasWidth: '',
    canvasHeight: '',
    isCode: false
  },
  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    this.setData({
      word:  wx.getStorageSync('introduce'),
      from: options.from,
      openId: wx.getStorageSync('userInfo').openId
    })
    !this.data.word&&this.getword(0);
    var qrWH = [];
    this.data.from&&(
      qrWH = wx.getStorageSync("qrWH").split("~~"),
      this.setData({
        canvasWidth: qrWH[0],
        canvasHeight: qrWH[1],
        b64: wx.getStorageSync("qrcode"),
        isCode: wx.getStorageSync("isCode")
      })
    )
  },
  toWord(e) {
    // 保存关键词
    wx.setStorageSync('keyword',this.data.keyword)
    wx.setStorageSync("qrcode",this.data.b64)
    wx.setStorageSync("isCode",this.data.isCode)
    wx.setStorageSync("qrWH",this.data.canvasWidth+"~~"+this.data.canvasHeight)
    wx.redirectTo({
      url: '/pages/word/word?type='+e.currentTarget.dataset.type+'&word='+this.data.word+'&from=2'
    })
  },
  // 没有本地词，从列表中获取----默认引导词  
  getword(type) {
    app.func.req('/api/article/getGuideWords', 'get', {
      'type': type
    }, (res) => {
      wx.hideLoading()
      if(res && res.errno == 0){
        if(type==0) {
          this.setData({
            word: res.rst.data[0].keyword
          })
          wx.setStorageSync('word',res.rst.data[0].keyword)
        }else {
          //成功
          this.setData({
            author: res.rst.data[0].keyword
          })
            wx.setStorageSync('author',res.rst.data[0].keyword)

        }
      }else {
        wx.showToast({
          title: res.err,
          icon: 'none',
          duration: 2000
        })
      }
    },()=>{
      wx.hideLoading()
    })
  },
  fetch() {
    wx.chooseImage({
      success: res => {
        wx.showLoading({
          title: '上传中',
          icon: 'none'
        })
        wx.getFileSystemManager().readFile({
          filePath: res.tempFilePaths[0], //选择图片返回的相对路径
          encoding: 'base64', //编码格式
          success: res => { //成功的回调
            this.getUrl('data:image/png;base64,' + res.data)
          },
          fail(error) {
            console.log(error)
          }
        })
      }
    })
  },
  
  checkCode(url) {
    app.func.req('/api/qrCodeReader', 'post', {
      'qrcode': url
    }, (res) => {
      wx.hideLoading()
      if(res && res.errno == 0){
        //成功
        this.setData({
          isCode: true
        })
        console.log(res)
      }else {
        this.setData({
          isCode: false
        })
        wx.showToast({
          title: res.err,
          icon: 'none',
          duration: 2000
        })
      }
    },()=>{
      wx.hideLoading()
    })
  },
  getUrl(url) {
    app.func.req('/api/goods/imageUrl', 'post', {
      'qrcode': url
    }, (res) => {
      wx.hideLoading()
      if(res && res.errno == 0){
        if(!res.rst) {
          wx.showToast({
            title: '图片上传失败',
            icon: 'none'
          })
          return;
        }
        //成功
        this.setData({
          b64: res.rst
        })
        this.checkCode(url)
      }else {
        wx.showToast({
          title: res.err,
          icon: 'none',
          duration: 2000
        })
      }
    },()=>{
      wx.hideLoading()
    })
  },
  toStatus() {
    if(!this.data.b64&&!this.data.isCode) {
      wx.showToast({
        title: this.data.b64?'图片上传中':'二维码识别失败',
        icon: none
      })
      return;
    }
    wx.setStorageSync('introduce',this.data.word)
    wx.redirectTo({
      url: '/pages/status/status?url='+this.data.b64
    })
  },
  onShareAppMessage() {
    
  }
})