小程序分享群获取群id

前端

// 分享页
onShareAppMessage(res) {
    return {
		path: `/pages/index/index?uid=${uni.getStorageSync('id')}&msg=分享****`,
    }
},

// APP页面
async onLaunch(options) {
	console.log('App Launch', options)
	wx.login({
		success: res => {
			console.log('res1111111111:', res)
			if (res.code && options.query && options.query.uid) {
				uni.getGroupEnterInfo({
					success: async res2 =>{
						console.log('res2:', res2)
						let params = {
							uid: options.query && options.query.uid,
							msg: options.query && options.query.msg,
							code: res.code,
							iv: res2.iv,
							encryptedData: res2.encryptedData
						}
						await this.$u.post('/api/user/shareAddIntegral', params)
					}
				});
			}
		},
		fail: (err)=>{
			console.log('拒绝授权', err)
		}
	})
}

后端

$config = [
     'app_id' => Config::get('ask.wxappid'),
     'secret' => Config::get('ask.wxappsecret'),
 ];
 $app = Factory::miniProgram($config);
 $res = $app->auth->session($code);
 $session = $res['session_key'];
 // 使用EasyWeChat解密数据
 // 群id就在 $decryptedData['opengid']
 $decryptedData = $app->encryptor->decryptData($session, $iv, $encryptedData);
 $decryptedData['openid'] = $res['openid'];
 return $decryptedData;