uni-app微信小程序登录并使用vuex存储登录态

微信小程序注册登录思路

(这是根据自身的项目的思路,不一定每个项目都适用)

1.制作授权登录框,引导用户点击按钮
2.uni.login获取code
3.把code传给后端接口,后端返回如下数据

openid: "ogtVM5RWdfadfasdfadfadV5s"
status: 1
// 状态码:status==0(该用户未注册,需调用注册接口) status==1(该用户已注册)

4.判断用户是否注册,并调用用户信息接口
(1)若已注册则提示登录成功,并调用后台给的获取用户信息的接口,并把数据保存到vuex
(2)若未注册则调用注册接口,注册成功之后调获取用户信息接口,并把数据保存到vuex

制作授权登录框

我把它写到一个组件里,在需要调用的页面注册该组件
authorization.vue组件

<template>
    <view class="pop">
        <view class="pop-main">
            <i class="iconfont cancel" @click="cancel"></i>
            <view class="pop-title">需要您的授权</view>
            <view class="pop-text">
                <view>为了提供更好的服务</view> 
                <view>请在稍后的提示框中点击允许</view>
            </view>
            <image class="pop-imgsize" src="../static/images/aut.png" mode=""></image>
            <!-- 微信小程序的引导按钮,可以获取到用户信息 getuserinfo函数调用请求下面会讲到-->
            <button type="primary" class="reserve-btn" open-type="getUserInfo" @getuserinfo="getuserinfo">我知道了</button>
        </view>
    </view>
</template>

<script>
    import app from '../common/config.js'
    export default {
        data() {
            return {
                
            };
        },
        methods: {
            getuserinfo(res) {
            // 调用封装在app的_getuserinfo函数,_getuserinfo函数执行用户获取code,传code给后台,调用注册接口
                app._getuserinfo(res)
            },
            cancel() {
                this.$emit('cancelChild',false)
            }
        }
    }
</script>

<style scoped>
.pop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,.3);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
}
.pop-main {
    width: 690upx;
    height: 800upx;
    box-sizing: border-box;
    background-color: #FFFFFF;
    border-radius: 20upx;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 14px;
    padding: 64upx 0upx 40upx 0upx;
}
/* 删除按钮 */
.cancel {
    position: absolute;
    top: 20upx;
    right: 20upx;
    font-size: 20px;
}
.pop-title {
    padding-bottom: 40upx;
    width: 100%;
    border-bottom: 1px solid #BFBFBF;
    font-size: 16px;
    letter-spacing: 2px;
    text-align: center;
}
.pop-imgsize {
    width: 484upx;
    height: 406upx;
}
.pop-text {
    width: 75%;
    text-align: center;
    font-size: 15px;
    margin: 30upx 0upx;
    letter-spacing: 1px;
}
button {
    background-color: #08BF00;
    color: #FFFFFF;
    text-align: center;
    height: 88upx;
    line-height: 88upx;
    font-size: 14px;
    border-radius: 50upx;
    width: 78%;
}
</style>

在个人中心页注册该组件

<template>
    <view>
        <view class="info" >
            <image 
                @click="toSettings" 
                class="headimg" 
                :src="userinfo.headimgurl || defaultHeadimg" 
                >
            </image>
            <text v-if="!hasLogin" class="goLogin" @click="gologin">登录</text>
            <text v-if="hasLogin">{{userinfo.nickname}}</text>
            <text v-if="hasLogin && userinfo.mobile" class="phone">{{userinfo.mobile}}</text>
        </view>
        <authorization v-if="tologin && !hasLogin" @cancelChild="getChild"></authorization>
    </view>
</template>

点击"我知道了"按钮,调用封装_getuserinfo的请求

新建config.js,在config封装请求

import store from '@/store'
const app = {
    apiUrl: 'https://aaa.bbbbb.com/', //请求的地址
    openidRequest(obj) {
        try {
            const openid = uni.getStorageSync('openid');
            if (openid) {
                if(obj.data) {
                    obj.data["openid"] = openid;
                } else {
                    obj.data = {"openid": openid};
                }
                obj.url = this.apiUrl + obj.url;
                uni.request(obj)
            } else {
                console.log("获取不到openid")
            }
        } catch (e) {
            console.log(e)
            console.log("获取不到openid")
        }
    },
    _getuserinfo(res) {
        var that = this
        var userinfoDetails = {} // 注册时,需要把用户信息传给后台,所以定义一个对象存储获取到的用户信息
        userinfoDetails = res.detail.userInfo 
        uni.getUserInfo({
          provider: 'weixin',
          success: function () {
            uni.login({
                success:function(res){
                    uni.showLoading({
                        title: '登陆中...',
                        mask: false
                    });
                    uni.request({
                        url: that.apiUrl + 'sdafl/ddfax/dfadf?code=' + res.code, //把code传给后台,后台返回openid和status
                        success: (res) => {
                            console.log(res)
                            if (res.data.openid) {
                                uni.setStorageSync('openid', res.data.openid)
                                userinfoDetails.openid = res.data.openid
                                //处理一下属性名传递给后台
                                userinfoDetails = JSON.parse(JSON.stringify(userinfoDetails).replace(/avatarUrl/g, "headimgurl"));
                                userinfoDetails = JSON.parse(JSON.stringify(userinfoDetails).replace(/gender/g, "sex"));
                                userinfoDetails = JSON.parse(JSON.stringify(userinfoDetails).replace(/nickName/g, "nickname"));
                                delete userinfoDetails.language;
                                userinfoDetails.ppid = store.state.ppid || ''
                                console.log(userinfoDetails)
                            }
                            // 当status==0时说明用户还没有注册需要注册
                            if(res.data.status == 0) {
                                that.sendInfo(userinfoDetails) // 调用注册接口,并把用户信息userinfoDetails传给后台
                                console.log('我还没有注册')
                            } else if (res.data.status == 1) {
                                uni.showToast({
                                    title: '登录成功',
                                    icon: 'success',
                                    duration: 2000
                                })
                                that.getUserData() // 调用获取用户信息的接口
                            } else {
                                uni.hideLoading()
                                uni.showToast({
                                    title: '登录失败',
                                    duration: 2000,
                                    icon:'none'
                                })
                            }
                        }
                    })
                }
            })
          }
        });
    },
    // 注册接口
    sendInfo(userinfoDetails) {
        var that = this
        uni.request({
            url: this.apiUrl + 'fdafd/ifdaffdex/fdaff',
            data: userinfoDetails,
            method: 'POST',
            success: (res) => {
                if(res.data.userinfo == 1) {
                    uni.hideLoading()
                    uni.showToast({
                        title: '注册成功',
                        icon: 'success',
                        duration: 2000
                    })
                    that.getUserData() // 调用获取用户信息的接口
                } else {
                    uni.hideLoading()
                    uni.showToast({
                        title: res.data.msg,
                        duration: 2000
                    })
                }
            }
        })
    },
    // 获取用户信息
    getUserData() {
        uni.request({
            url: this.apiUrl + 'sfad/dfadfad/idfadffde', 
            data: {
                openid: uni.getStorageSync('openid')
            },
            method: 'POST',
            success: (res) => {
                if(res.data.status == 1) {
                    console.log(res.data)
                    store.commit('login', res.data.user) // vuex的方法
                } else {
                    uni.showToast({
                        title: res.data.msg,
                        duration: 2000
                    })
                }
            }
        })
    }
}
export default app;

vuex存储登录态的方法

import Vue from 'vue'
import Vuex from 'vuex'

Vue.use(Vuex)

const store = new Vuex.Store({
    state: {
        hasLogin: false,
        userinfo: {},
        ppid: '',
    },
    mutations: {
        // 登录
        login(state,res) {
            state.hasLogin = true
            state.userinfo = res
            uni.setStorage({
                key: 'userinfo',
                data: res
            })
            // console.log(state.userinfo)
            // console.log(state.hasLogin)
        },
        // 二维码ppid
        saveppid(state,ppid) {
            state.ppid = ppid
            uni.setStorage({
                key: 'ppid',
                data: ppid
            })
            // console.log(state.ppid)
        },
    },
})

export default store

搞定