html

<button class='bottom' type='primary' open-type="getPhoneNumber" withCredentials="true" lang="zh_CN"
            @click="getUserInfo" @getphonenumber="getPhoneNumber">授权微信</button>

js部分

          //登录并获取token
         getUserInfo() {
                // 展示加载框
                uni.getUserProfile({
                    lang: 'zh_CN',
                    desc: '登录',
                    success: infoRes => {
                        this.userInfo = infoRes.userInfo; //用户信息，微信头像，昵称等等
                        console.log(this.userInfo)
                        uni.login({
                            provider: 'weixin',
                            success: res => {
                                let code = res.code
                                uni.request({
                                    method: "POST",
                                    url: `${this.$baseUrl}/business/user/login`,
                                    header: {
                                        Accept: 'application/json',
                                        'XX-Device-Type': 'wxapp',
                                    },
                                    data: {
                                        nickname: this.userInfo.nickName,
                                        avatar: this.userInfo.avatarUrl,
                                        code,
                                    },
                                    success: v => {
                                        console.log(res)
                                    }
                                })
                            }
                        });
                    },
                    fail(res) {
                        uni.showToast({
                            title: '登录授权失败',
                            icon: 'none',
                        })
                    }
                });
            },

            //获取电话号码
            getPhoneNumber(e) {
                let token = uni.getStorageSync('access_token')
                uni.request({
                    method: "POST",
                    url: 'https://api.weixin.qq.com/wxa/business/getuserphonenumber?access_token=' + token,
                    data: {
                        code: e.detail.code
                    },
                    success: res => {
                        console.log(res.data.phone_info.phoneNumber)
                    }
                })
            },