47 lines
1.6 KiB
PHP
47 lines
1.6 KiB
PHP
<?php
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namespace App\Services;
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use App\Exceptions\RepositoryException;
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use Illuminate\Support\Facades\Http;
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use Illuminate\Support\Facades\Log;
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/**
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* 微信小程序服务（wx.login 登录凭证校验 code2session）
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*
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* 在线支付前置：用小程序 wx.login() 返回的 code 换取付款人 openid，
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* 作为旺铺统一下单的 open_id（服务商模式下的微信用户标识）。
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*/
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class WechatMiniService
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{
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/**
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* wx.login 的 code 换 openid
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*
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* @return string 用户 openid
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* @throws RepositoryException 未配置小程序或凭证校验失败
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*/
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public function code2session(string $code): string
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{
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$appid = trim((string) config('services.wechat.mini.appid'));
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$secret = trim((string) config('services.wechat.mini.secret'));
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if ($appid === '' || $secret === '') {
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throw new RepositoryException('微信小程序未配置 AppID/Secret，请联系管理员');
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}
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$result = Http::timeout(10)->get('https://api.weixin.qq.com/sns/jscode2session', [
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'appid' => $appid,
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'secret' => $secret,
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'js_code' => $code,
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'grant_type' => 'authorization_code',
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])->json();
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$openid = is_array($result) ? (string) ($result['openid'] ?? '') : '';
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if ($openid === '') {
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Log::warning('微信 code2session 失败', ['response' => $result]);
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throw new RepositoryException('微信登录凭证校验失败：' . ($result['errmsg'] ?? '请重新进入小程序'));
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}
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return $openid;
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}
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}
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