Laravel 微信小程序后端，用户登录

接上篇微信小程序后端搭建：分享：Laravel 微信小程序后端搭建

后端搭建好后第一件事就是用户登录认证，简单实现微信小程序登录认证

1.user模型
use Laravel\Passport\HasApiTokens;新增

use HasApiTokens, Notifiable;

protected $fillable = [
  'id',
  'name',
  'email',
  'email_verified_at',
  'username',
  'phone',
  'avatar',//我用来把微信头像的/0清晰图片，存到又拍云上
  'weapp_openid',
  'nickname',
  'weapp_avatar',
  'country',
  'province',
  'city',
  'language',
  'location',
  'gender',
  'level',//用户等级
  'is_admin',//is管理员
];

2.新增一条路由

//前端小程序拿到的地址：https://域名/api/v1/自己写的接口
Route::group(['prefix' => '/v1'], function () {
    Route::post('/user/login', 'UserController@weappLogin');
});

3.在UserController控制器里新建function weappLogin()，别忘了use这些

use App\User;
use Carbon\Carbon;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Storage;

写两个function weappLogin(),avatarUpyun()

public function weappLogin(Request $request)
    {
        $code = $request->code;
        // 根据 code 获取微信 openid 和 session_key
        $miniProgram = \EasyWeChat::miniProgram();
        $data = $miniProgram->auth->session($code);
        if (isset($data['errcode'])) {
            return $this->response->errorUnauthorized('code已过期或不正确');
        }
        $weappOpenid = $data['openid'];
        $weixinSessionKey = $data['session_key'];
        $nickname = $request->nickname;
        $avatar = str_replace('/132', '/0', $request->avatar);//拿到分辨率高点的头像
        $country = $request->country?$request->country:'';
        $province = $request->province?$request->province:'';
        $city = $request->city?$request->city:'';
        $gender = $request->gender == '1' ? '1' : '2';//没传过性别的就默认女的吧，体验好些
        $language = $request->language?$request->language:'';

        //找到 openid 对应的用户
        $user = User::where('weapp_openid', $weappOpenid)->first();
        //没有，就注册一个用户
        if (!$user) {
            $user = User::create([
                'weapp_openid' => $weappOpenid,
                'weapp_session_key' => $weixinSessionKey,
                'password' => $weixinSessionKey,
                'avatar' => $request->avatar?$this->avatarUpyun($avatar):'',
                'weapp_avatar' => $avatar,
                'nickname' => $nickname,
                'country' => $country,
                'province' => $province,
                'city' => $city,
                'gender' => $gender,
                'language' => $language,
            ]);
        }
        //如果注册过的，就更新下下面的信息
        $attributes['updated_at'] = now();
        $attributes['weixin_session_key'] = $weixinSessionKey;
        $attributes['weapp_avatar'] = $avatar;
        if ($nickname) {
            $attributes['nickname'] = $nickname;
        }
        if ($request->gender) {
            $attributes['gender'] = $gender;
        }
        // 更新用户数据
        $user->update($attributes);
        // 直接创建token并设置有效期
        $createToken = $user->createToken($user->weapp_openid);
        $createToken->token->expires_at = Carbon::now()->addDays(30);
        $createToken->token->save();
        $token = $createToken->accessToken;

        return response()->json([
            'access_token' => $token,
            'token_type' => "Bearer",
            'expires_in' => Carbon::now()->addDays(30),
            'data' => $user,
        ], 200);
    }

    //我保存到又拍云了，版权归腾讯所有。。。头条闹的
    private function avatarUpyun($avatar)
    {
        $avatarfile = file_get_contents($avatar);
        $filename = 'avatars/' . uniqid() . '.png';//微信的头像链接我也不知道怎么获取后缀，直接保存成png的了
        Storage::disk('upyun')->write($filename, $avatarfile);
        $wexinavatar = config('filesystems.disks.upyun.protocol') . '://' . config('filesystems.disks.upyun.domain') . '/' . $filename;
        return $wexinavatar;//返回链接地址
    }

微信的头像/0
https://wx.qlogo.cn/mmopen/vi_32/Q0j4TwGTf...

小头像默认/132
https://wx.qlogo.cn/mmopen/vi_32/Q0j4TwGTf...

4.后端上面就写好了，再看下小程序端怎么做的哈，打开小程序的app.json，添加 "pages/auth/auth",

{
  "pages": [
    "pages/index/index",
    "pages/auth/auth",//做一个登录页面
    "pages/logs/logs"
  ],
  "window": {
    "backgroundTextStyle": "light",
    "navigationBarBackgroundColor": "#fff",
    "navigationBarTitleText": "WeChat",
    "navigationBarTextStyle": "black"
  },
  "sitemapLocation": "sitemap.json",
  "permission": {
    "scope.userLocation": {
      "desc": "你的位置信息将用于小程序位置接口的效果展示"
    }
  }
}

5.打开auth.js

const app = getApp();
Page({
  /**
   * 页面的初始数据
   */
  data: {
    UserData: [],
    isClick: false,
  },
  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function(options) {

  },
  login: function(e) {
    let that=this
    that.setData({
      isClick: true
    })
    wx.getUserInfo({
      lang: "zh_CN",
      success: response => {
        wx.login({
          success: res => {
            let data = {
              code:res.code,
              nickname: response.userInfo.nickName,
              avatar: response.userInfo.avatarUrl,
              country: response.userInfo.country ? response.userInfo.country : '',
              province: response.userInfo.province ? response.userInfo.province : '',
              city: response.userInfo.city ? response.userInfo.city : '',
              gender: response.userInfo.gender ? response.userInfo.gender : '',
              language: response.userInfo.language ? response.userInfo.language : '',
            }
            console.log(data)
            app.globalData.userInfo = data;
            wx.request({
              url: '你的后端地址',//我用的valet，http://ak.name/api/v1/user/login
              method: 'POST',
              data: data,
              header: {
                'Content-Type': 'application/x-www-form-urlencoded'
              },
              success: function (res) {
                console.log(res)
                if (res.statusCode != '200') {
                  return false;
                }
                wx.setStorageSync('access_token', res.data.access_token)
                wx.setStorageSync('UserData', res.data.data ? res.data.data : '')
                wx.redirectTo({
                  url: '/pages/index/index',
                })
              },
              fail: function (e) {
                wx.showToast({
                  title: '服务器错误',
                  duration: 2000
                });
                that.setData({
                  isClick: false
                })
              },
            });
          }
        })
      },
      fail: function (e) {
        that.setData({
          isClick: false
        })
      },
    })

  }
})

6.打开auth.wxml

<view class='padding-xl'>
  <button class='cu-btn margin-top bg-green shadow lg block' open-type="getUserInfo" bindgetuserinfo="login" disabled="{{isClick}}" type='success'>
    <text wx:if="{{isClick}}" class='cuIcon-loading2 iconfont-spin'></text> 微信登录</button>
</view>