微信小程序对接百度api 全部拿走不谢

最近接到一个项目微信小程序调用百度api进行人脸识别 废话吧不多说 直接上代码

1.首先先在百度申请api 做人脸识别
这里是我的请求封装

//封装post get 
function $http(url, method, param = {}, lookup) {
  //url 地址
  //method 传参方式
  //param 接受的值  get 可传空
  //lookup 因为公司查询的时候需要传时间戳 通过lookup判断是否需要传输时间戳
  // var newdata = new Date().getTime();
  var baseUrl = `${url}`;
 console.log(param)
  var params = Object.assign(param);
  // console.log(baseUrl,params)
  switch (method) {
    case 'get':
      return new Promise((resolve, reject) => {
        wx.request({
          url: baseUrl,
          data: params,
          method:'get',
          success(res) {
            resolve(res.data)
          },
          fail(err){
            console.log(err)
          }
        })
      });
      break;
    case 'post':
      return new Promise((resolve, reject) => {
        wx.request({
          url: baseUrl,
          data: params,
          method: 'post',
          dataType:'json',
          headers: {
            "Content-Type": "application/json" //设置跨域头部
          },
          success(res) {
            resolve(res.data)
          },
          fail(err) {
            console.log(err)
          }
        })
      });
      break;
  }
}

module.exports={
  $http: $http
}

2.首先通过小程序 camera 创建相机

<camera mode="  " device-position="front" flash="auto" binderror="error" class="sxt">

</camera>

3.逻辑代码加人脸追踪

var http = require('../../utils/http.js');
var app = getApp();
Page({
  data: {
    srcimg: '',
    src: "",
    // fengmian: "",
    // videoSrc: "",
    // who: "",
    openid: "",
    token: "",
    windowWidth: '',
    // trackshow: "进行人脸追踪",
    canvasshow: true,
    access_token: '',
    facesrc: '',
    faceimg: '',
    //手机号
    phoneNumber:'',
    //判断手机号
    phoneType:false,
    phoneTypeFopur:true,
    //相似数组
    faceListPage:[],
    //公众号openid
    openId:'',
    //高度
    windowheight:'100',
    bigWidth:'',
    //轮播图是否显示
    lunbo:false,
    lunboheight:'',
    phonemargin:'110',
    topsxt:''
    
  },
  onLoad() {
    var that = this
    var query = wx.createSelectorQuery();
    //选择id
    //获取某个view宽度
    query.select('.face').boundingClientRect(function (rect) {
      that.setData({
        windowWidth: rect.height
      })
    }).exec();
    wx.showLoading({
      title: '努力加载中',
      mask: true
    })
    //屏幕宽度
    var sysInfo = wx.getSystemInfoSync();
   
    that.ctx = wx.createCameraContext();
    console.log(that.ctx)
    // console.log("onLoad"),
    that.setData({
      openid: app.globalData.openid,
      token: app.globalData.token
    });

    //每次更新tooken
    http.$http("https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials&client_id=" + 'QyMGdRjCkMyrGXyaIN482x7b' + "&client_secret=" + 'ba0gjxKjKuu6I7vZqSKqvK26Z3N47QvD', "get", "")
      .then(res => {
        // this.userList = res.data;
        // console.log(res)
        wx.hideLoading();
        this.setData({
          access_token: res.access_token
        });
       
      })
      .catch(err => { });
    wx.hideLoading()
   //判断是什么手机
  //  console.log(app.phone())
   that.setData({
     phonemargin: app.phone().phonemargin,
     topsxt: app.phone().topsxt
   })
  },

  onShow(){
    //获取全部宽度
    let that = this
    that.setData({
        windowheight: app.heightNum().windowheight,
        lunbo: app.heightNum().lunbo,
        lunboheight: app.heightNum().lunboheight,
      })
  },
  
  onReady: function () {
    let that = this;
   let interval = setInterval(that.takePhoto,1500)
  },

  takePhoto() {
    // console.log("takePhoto")
    var that = this
    var takephonewidth
    var takephoneheight
    that.ctx.takePhoto({
      quality: 'low',
      success: (res) => {
        // console.log(res), 
        // 获取图片真实宽高
        wx.getImageInfo({
          src: res.tempImagePath,
          success: function (res) {
            takephonewidth = res.width,
              takephoneheight = res.height
          }
        })
        // console.log(takephonewidth, takephoneheight)
        wx.getFileSystemManager().readFile({
          filePath: res.tempImagePath, //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.setData({
              facesrc: res.tempImagePath,
              faceimg: res.data
            })
            // console.log('data:image/png;base64,' + res.data)
            //调用活体验证的方法
            wx.request({
              url: "https://aip.baidubce.com/rest/2.0/face/v3/detect?access_token=" + that.data.access_token,
              data: {
                image: res.data,
                image_type: "BASE64",
                max_face_num: 10,
                face_field:'quality,landmark,beauty,face_type' 
              },
              method: 'POST',
              dataType: "json",
              header: {
                'content-type': 'application/json'
              },
              success: function (res) {
                console.log(res)
                // console.log(res.data);

                //canvas 绘制
                if (res.data.error_code === 0 && res.data.result.face_list[0].quality.completeness!=0) {
                  var ctx = wx.createContext()
                  ctx.setStrokeStyle('#31859c')
                  ctx.lineWidth = 3
                  for (let j = 0; j < res.data.result.face_num; j++) {
                    var cavansl = res.data.result.face_list[j].location.left / takephonewidth * that.data.windowWidth
                    var cavanst = res.data.result.face_list[j].location.top / takephoneheight * that.data.windowWidth
                    var cavansw = res.data.result.face_list[j].location.width / takephonewidth * that.data.windowWidth
                    var cavansh = res.data.result.face_list[j].location.height / takephoneheight * that.data.windowWidth
                    ctx.strokeRect(cavansl, cavanst, cavansw, cavansh)
                  }
                  wx.drawCanvas({
                    canvasId: 'canvas',
                    actions: ctx.getActions()
                  })
                  that.FaceImgLookup();
                } else {
                  var ctx = wx.createContext()
                  ctx.setStrokeStyle('#31859c')
                  ctx.lineWidth = 3
                  wx.drawCanvas({
                    canvasId: 'canvas',
                    actions: ctx.getActions()
                  })
                }
              },
            })

          }
        })
      }
    })
  },
  //在人脸库中查找是否有这个人脸
  FaceImgLookup() {
    let that = this;
    http.$http("https://aip.baidubce.com/rest/2.0/face/v3/search?access_token=" + that.data.access_token, 'post', {
      image: that.data.faceimg,
      image_type: 'BASE64',
      group_id_list: 'faceImg',
      liveness_control: 'HIGH',
      max_user_num:'5',
    }).then(res => {
      console.log(res);
      if (res.error_code == 0) {
       
        if (res.result.user_list[0].score > 80 && res.result.user_list.length == 1) {
          console.log('人脸库中有这个人');
          return
        } else if (res.result.user_list[0].score > 80&&res.result.user_list.length>1){
          that.setData({
            faceListPage:res.result.user_list
          })
         
          console.log('人脸库中有这个人,并且还有几个相似的', that.data.faceListPage);
          return
        }else {
          console.log('人脸库中没有这个人');
          that.addFaceImg();
          return
        }
      } else if (res.error_code == 222207) {
        console.log('空的人脸库我要去添加');
        that.addFaceImg();
        return
      } else if (res.error_code == 223120) {
        console.log('活体验证未通过')
      }
    })
      .catch(err => {
        console.log(err)
      })
  },
  //人脸id
  faceId() {
    var outTradeNo = "";  //人脸id
    for (var i = 0; i < 6; i++) //6位随机数，用以加在时间戳后面。
    {
      outTradeNo += Math.floor(Math.random() * 10);
    }
    return new Date().getTime() + outTradeNo;  //时间戳，用来生成id号
  },
  // 调用储存人脸的方法
  addFaceImg() {
    let that = this;
    http.$http("https://aip.baidubce.com/rest/2.0/face/v3/faceset/user/add?access_token=" + that.data.access_token, 'post', {
      image: that.data.faceimg,
      image_type: 'BASE64',
      group_id: 'faceImg',
      user_id: that.faceId()
    }).then(res => {
      // this.userList = res.data;
      console.log(res);
      if (res.error_code == 0) {
        console.log('人脸储存成功')
      }
    })
      .catch(err => {
        console.log(err)
      })
  },

  onUnload: function () {
    var that = this
    // clearInterval(that.interval)
  },

  error(e) {
    console.log(e.detail)
  }

})