「Mpvue」获取微信小程序实现获取用户登录信息和openid

<template>
    <div>
        <div class='up' v-if="true">...
        </div>
        <div v-if="isCeng" @touchmove.stop.prevent="touchmovehandle">
            <div class="modal-mask">
            </div>
            <div class="modal-dialog">
            <div class="modal-content">
                <img class="img" src="../../../static/icon/school.jpg">
                <div class="content-text">
                <p class="key-bold">欢迎来到--哈师大智行校园</p>
                <p class="key-bold">哈师大智行校园</p>
                <p class="little-tip">祝你有个愉快的体验：</p>
                <p class="little-content">
                    哈师大智行校园简介
                </p>
                <p class="little-content">
                    
                </p>
                </div>
            </div>	
                <button
                class="btn" open-type="getUserInfo"  @getuserinfo="getUserInfo">
                授权登录
            </button>
            </div>
        </div>
    </div>
</template>
<script>
const appId="wxe6e2ddc060fa2387" 
const secret="5cdc17198d139831e1e1011552deb43b"
export default {
    data() {
        return{
          userName:"",
          isCeng:true,
          userinfo:{
            avatarUrl:'',
            nickName:'',
            gender:'',
            city:'',
            country:''
          },  //存放用户信息，保存在自己的数据库中  		
		}
    },
    mounted(){
		  this.isLogin()		
    },
    methods:{		
      getVxUserInfo(e){				
        if(e.target.userInfo){
          this.userName=e.target.userInfo.nickName;
          this.isCeng=false;
          this.isLogin()
          //将用户添加到数据库中
          //需自行创建user表
          //需自行写云函数
          const db = wx.cloud.database()
          db.collection('user').add({
          data: {
             avatarUrl: userInfo.avatarUrl,
             nickName: userInfo.nickName,
             gender: userInfo.gender,
             city: userInfo.city,
             country: userInfo.country
            }
            })
        }else{
          this.userName="";
          this.isCeng=true;
        }	
      },	
      isLogin(){		
        var _this=this;
        wx.getSetting({
	          success(res) {    	          	 
	            if (!res.authSetting['scope.userInfo']) {//未授权getUserInfo            	
	              wx.authorize({
	                scope: 'scope.getUserInfo',
	                success(res) {	                
	                  // 用户已经同意小程序使用用户信息，后续调用 wx.userInfo 接口不会弹窗询问       
	                  console.log(res)
	                  _this.isCeng=false;
                    _this.userName=res.target.userInfo.nickName;
                    console.log(_this.userName)
	                  
	                },
	                fail(err){
	                 console.log(err)
	                }
	              })
	            }else{//已授权
	              wx.getUserInfo({
	                success(res) {	
                    _this.loginOk(res)
                    console.log(_this.userName)
	                },
	                fail(err) {
	                  console.log(err)
	                }
	              })
	            }
	          }
	        })
    },
      touchmovehandle(){ //解决vue蒙层滑动穿透问题
        
      },
      loginOk(res){  //登录成功后的信息处理
			let _this=this;
			_this.userinfo.encryptedData=res.encryptedData;
	        _this.userinfo.iv=res.iv;
	        _this.userinfo.rawData=res.rawData;
	        _this.userinfo.signature=res.signature;
	        _this.userinfo.infos=res.userInfo;
	        _this.getOpenId()
	        _this.isCeng=false;
	        _this.userName=res.userInfo.nickName;
      },
      getOpenId(){  //获取用户的openid
			let _this=this;
			wx.login({
			  success(res) {
			  	  	if (res.code) {
				      // 发起网络请求
				      wx.request({
				        url: 'https://api.weixin.qq.com/sns/jscode2session',
				        data: {
				            appid:appId,  //开发者appid
				            secret:secret, //开发者AppSecret(小程序密钥)	
				            grant_type:"authorization_code",  //默认authorization_code
				            js_code: res.code    //wx.login登录获取的code值
				        },
				        success(res) {
				        	_this.userinfo.openid=res.data.openid;
				        	_this.userinfo.session_key=res.data.session_key;						   
						}
				      })
				    } else {
				      console.log('登录失败！' + res.errMsg)
				    }
			  
			  }
			})
    }
  }
}

       
    

</script>
<style scoped>

.modal-mask {
  width: 100%;
  height: 100%;
  position: fixed;
  top: 0;
  left: 0;
  background: #000;
  opacity: 0.5;
  overflow: hidden;
  z-index: 9000;
  color: #fff;
}
.modal-dialog {
  box-sizing: border-box;
  width: 560rpx;
  overflow: hidden;
  position: fixed;
  top: 30%;
  left: 0;
  z-index: 9999;
  background: #fff;
  margin: -150rpx 95rpx;
  border-radius: 16rpx;
}
.modal-content {
  box-sizing: border-box;
  display: flex;
  padding: 0rpx 53rpx 50rpx 53rpx;
  font-size: 32rpx;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}
.content-tip {
  text-align: center;
  font-size: 36rpx;
  color: #333333;
}
.content-text {
  height:130px;
  padding:10px 0px 50px 0px;
  font-size:14px;
}
.modal-footer {
  box-sizing: border-box;
  display: flex;
  flex-direction: row;
  border-top: 1px solid #e5e5e5;
  font-size: 16px;
  font-weight:bold;
  height: 45px;
  line-height: 45px;
  text-align: center;
  background:	#FFB6C1;
}
button {
  width: 100%;
  background:#FFB6C1;
  color:#FFFFFF;
  font-weight:bold;
}
.img {
  width: 280px;
  height:90px;
}
.little-tip {
  padding-top:15px;
  padding-bottom:3px;
  font-size: 14px;
  font-weight:bold;
  color: #feb600;
}
.little-content {
  padding-top:5px;
  font-size: 11px;
  color:#606060;
}
.key-bold {
  padding-top:5px;
  font-size: 14px;
  font-weight:bold;
}
</style>