微信支付服务

app/Exceptions/WeChatPayException.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace App\Exceptions;
+
+use Exception;
+
+class WeChatPayException extends Exception
+{
+    /**
+     * @var array
+     */
+    protected $raw;
+
+    /**
+     * @param string|null $message
+     * @param array $raw
+     */
+    public function __construct(?string $message = null, array $raw = [])
+    {
+        parent::__construct($message);
+
+        $this->raw = $raw;
+    }
+
+    /**
+     * 微信支付上下文
+     *
+     * @return array
+     */
+    public function context()
+    {
+        return [
+            'wechat_raw' => $this->raw,
+        ];
+    }
+}

app/Services/WeChatPayService.php

@@ -0,0 +1,90 @@
+<?php
+
+namespace App\Services;
+
+use App\Exceptions\WeChatPayException;
+use EasyWeChat\Factory;
+use EasyWeChat\Payment\Application;
+
+class WeChatPayService
+{
+    // 小程序交易类型
+    // https://pay.weixin.qq.com/wiki/doc/api/app/app.php?chapter=4_2
+    public const TRADE_TYPE_JSAPI = 'JSAPI';    // JSAPI支付
+    public const TRADE_TYPE_APP = 'APP';        // App支付
+    public const TRADE_TYPE_NATIVE = 'NATIVE';  // Native支付
+    public const TRADE_TYPE_H5 = 'MWEB';        // H5支付
+
+    /**
+     * @var array
+     */
+    public static $allowTradeTypes = [
+        self::TRADE_TYPE_JSAPI,
+        self::TRADE_TYPE_APP,
+    ];
+
+    /**
+     * @var \EasyWeChat\Payment\Application
+     */
+    protected $app;
+
+    /**
+     * @param \EasyWeChat\Payment\Application|null $app
+     */
+    public function __construct(?Application $app = null)
+    {
+        if ($app === null) {
+            $app = Factory::payment(config('wechat.payment.default'));
+        }
+
+        $this->app = $app;
+    }
+
+    /**
+     * 支付
+     *
+     * @param array $params
+     * @return array
+     *
+     * @throws \App\Exceptions\WeChatPayException
+     */
+    public function pay(array $params)
+    {
+        // 如果交易类型不存在，则使用 App 支付
+        if (! isset($params['trade_type'])) {
+            $params['trade_type'] = static::TRADE_TYPE_APP;
+        }
+
+        if (! in_array($params['trade_type'], static::$allowTradeTypes)) {
+            throw new WeChatPayException(sprintf('交易类型 [%s] 暂不支持', $params['trade_type']), $params);
+        }
+
+        $result = $this->app->order->unify($params);
+
+        if (data_get($result, 'return_code') !== 'SUCCESS') {
+            throw new WeChatPayException(
+                data_get($result, 'return_msg', '请求失败'),
+                $params
+            );
+        }
+
+        if (data_get($result, 'err_code') !== 'SUCCESS') {
+            throw new WeChatPayException(
+                sprintf(
+                    '[%s] %s',
+                    data_get($result, 'err_code', '-1'),
+                    data_get($result, 'err_code_des', '交易失败')
+                ),
+                $params
+            );
+        }
+
+        $prepayId = $result['prepay_id'];
+
+        if ($params['trade_type'] === static::TRADE_TYPE_APP) {
+            return $this->app->jssdk->appConfig($prepayId);
+        }
+
+        return $this->app->jssdk->bridgeConfig($prepayId, false);
+    }
+}

composer.json

@@ -21,7 +21,8 @@
         "laravel/sanctum": "^2.12",
         "laravel/tinker": "^2.5",
         "overtrue/easy-sms": "^2.0",
-        "tucker-eric/eloquentfilter": "^3.0"
+        "tucker-eric/eloquentfilter": "^3.0",
+        "w7corp/easywechat": "^5.10"
     },
     "require-dev": {
         "facade/ignition": "^2.5",

config/wechat.php

@@ -0,0 +1,15 @@
+<?php
+
+return [
+    'payment' => [
+        'default' => [
+            'sandbox' => env('WECHAT_PAYMENT_SANDBOX', false),
+            'app_id' => env('WECHAT_PAYMENT_APPID'),
+            'mch_id' => env('WECHAT_PAYMENT_MCH_ID'),
+            'key' => env('WECHAT_PAYMENT_KEY'),
+            'cert_path' => env('WECHAT_PAYMENT_CERT_PATH'), // 绝对地址
+            'key_path' => env('WECHAT_PAYMENT_KEY_PATH'),   // 绝对地址
+            'notify_url' => env('WECHAT_PAYMENT_NOTIFY_URL'),
+        ],
+    ],
+];