uniapp实现小程序登录，微信一键登录，获取token,iv,code,ncryptedData

			 <button
                open-type="getPhoneNumber"
                @click.stop="loginfn"
                @getphonenumber.stop="onGetPhoneNumber"
              >点击微信一键登录</button>

2.写点击button之后的逻辑,，获取iv,code,ncryptedData,调用后端接口进行登录

 // 用户授权登录
 //首先点击登录按钮的时候获取一下code，保存到data里
	 loginfn(){
 		 wx.login({
   	       success(res) {
  	          that.code = res.code;
  	          return;
	          },
	      });
      }
     //调用button自带的弹窗获取用户信息方法
    async onGetPhoneNumber(val) {
    //此时的val是用户点击了允许还是拒绝
      let that = this;
      if (val.detail.errMsg === "getPhoneNumber:ok") {
      //保存需要的** iv, encryptedData **
        const { iv, encryptedData } = val.detail;
        //调用后台登录的接口，传递参数
        const result = await that.api.getLoginApi({
          loginType: "1",
          iv,
          code: that.code,
          encryptedData,
        });
        // 登陆成功
        if (result.data.token) {
        //保存token
          uni.setStorageSync("token", result.data.token);
          that.token = uni.getStorageSync("token");
            uni.showToast({
              title: 登录成功",
              duration: 800,
              icon: "success",
            });
            // 刷新回到用户页页面
            uni.reLaunch({
              url: "/pages/myself/myself",
            });
            return;
          }
        }
      } else {
        uni.showToast({
          title: "已取消登录",
          duration: 500,
          icon: "success",
        });
      }
    }