Multi-Template Meituan Proxy Payment System Source Code Download – Full Open Source Payment Gateway

This is a complete proxy payment system originally designed for Meituan-style payment workflows, now available as fully open-source code on dajian168. The system supports multiple front-end templates, multiple payment channels, and can be deployed for any business that needs to handle third-party payment distribution—delivery platforms, group-buying sites, or commission-based marketplaces. When I first tested this 其它源码 package, I was surprised by how modular the payment channel abstraction is; you can plug in WeChat Pay, Alipay, or bank transfer channels without touching the core ledger logic.

The architecture separates the merchant dashboard, user-facing payment pages, and backend settlement engine into three deployable modules. Each payment channel is defined as a driver class with a unified interface, so adding a new gateway only requires implementing four methods: init, createOrder, queryOrder, and refund. The admin panel includes real-time transaction monitoring, automatic reconciliation against external APIs, and a manual review queue for flagged orders—features you’d normally build yourself or pay a SaaS vendor for.

Three Payment Channel Drivers Already Configured

The system ships with three payment drivers pre-integrated: WeChat JSAPI, Alipay PC Web, and a mock sandbox channel for testing. Each driver is stored in /app/payment/driver/ and extends a base PaymentDriver class. During deployment, I found the WeChat driver config buried in config/payment.php—make sure to fill in your MCH_ID and API_KEY before going live, or all orders will silently fail with a generic “channel error” in the logs.

The mock driver is actually useful in production: it lets you test order flows, refund logic, and webhook callbacks without burning real money or hitting rate limits on payment gateways. In the admin panel under “Channel Management,” you can enable or disable each driver per merchant account, set individual fee rates (flat + percentage), and define settlement cycles. For example, one merchant might settle daily at 2 AM, another weekly on Fridays. The cron job at /app/console/Settlement.php reads these rules and generates payout batches automatically.

• WeChat JSAPI: requires appid, mch_id, api_key, and SSL cert path; supports refunds via API callback
• Alipay PC Web: uses RSA2 signature, redirect-based flow, automatic return URL parsing
• Sandbox driver: returns instant success, logs to runtime/mock_payment.log, useful for UAT
• Each driver stores transaction IDs, trade numbers, and callback timestamps in a unified payment_log table with JSON metadata

Template System With Four Front-End Themes

The source code includes four pre-built templates: a minimal single-page cashier, a Meituan-style responsive checkout, a dark-mode merchant portal, and a mobile H5 page optimized for WeChat in-app browsers. Templates live in /public/template/ and are switched via a theme parameter in the URL or a setting in the merchant’s account row. When testing the H5 template on an iPhone 13, I noticed the QR code auto-scales based on viewport width, which is a nice touch most payment demos ignore.

Each template shares the same backend API endpoints (/api/order/create, /api/order/query, /api/order/cancel) but renders its own HTML and JavaScript. The Meituan-style theme includes countdown timers, order item lists, and a collapsible “How to Pay” accordion—useful if your users are unfamiliar with QR-based payment flows. The dark-mode merchant portal is actually a full Vue.js SPA with charts powered by ECharts; it requires Node.js 14+ and webpack to build, documented in /admin/README.md.

Deployment Environment and Database Setup

Minimum requirements: PHP 7.2, MySQL 5.7, and Redis 4.0 for session management and order locking. The installation script at /install/index.php will create 12 tables including merchant, payment_order, settlement_batch, and channel_config. After importing the schema, you must manually insert at least one admin user into sys_admin and one merchant record with a valid API key—there’s no seed data provided, which tripped me up the first time.

Redis is not optional despite the docs saying “recommended.” Without it, concurrent order creation will cause race conditions in order number generation (the system uses Redis INCR for sequential IDs). The Nginx config sample in /doc/nginx.conf includes rewrite rules for clean URLs and rate-limiting on the /api/order/create endpoint—set to 10 requests per second per IP. If you deploy behind a CDN or load balancer, make sure to configure X-Real-IP or the rate limiter will throttle your entire traffic as a single IP.

1. Clone the source code from dajian168 其它源码 section and upload to your server
2. Run composer install --no-dev to fetch dependencies (Guzzle, PHPMailer, etc.)
3. Import /install/database.sql into MySQL and note the generated admin password
4. Copy config/app.sample.php to config/app.php and fill in database, Redis, and payment channel credentials
5. Set file permissions: chmod -R 755 runtime/ public/upload/
6. Configure cron: */5 * * * * php /path/to/think settlement for automatic payouts
7. Test with the sandbox driver before enabling real payment channels

Use Cases Beyond Food Delivery

While branded as a Meituan proxy system, the codebase works for any scenario where Platform A collects money and needs to distribute it to Merchant B after taking a cut. I’ve seen this source code adapted for freelance marketplaces (platform holds payment until task completion), affiliate commission systems (track referral IDs, pay commissions monthly), and even SaaS reseller networks (parent account distributes revenue to child agents). The key is the three-party ledger: platform_balance, merchant_balance, and frozen_amount (for disputed orders).

The system also handles split payments—one order can credit multiple merchants with different amounts. This is controlled by the split_rule JSON field in the payment_order table. For example, on a $100 food order, $85 goes to the restaurant, $10 to the delivery driver, $5 to the platform. The settlement cron respects these rules and generates separate payout records. There’s no built-in KYC or anti-fraud module, so if you’re processing real money, you’ll need to add your own risk checks—IP geolocation, velocity limits, blacklist matching, etc.

• Freelance platforms: hold payment until deliverable is approved, then release to service provider
• Affiliate networks: track referral codes, calculate tiered commissions, batch monthly payouts
• Multi-vendor marketplaces: collect payment upfront, distribute to sellers after shipping confirmation
• SaaS reseller programs: parent account receives subscription fees, child agents get revenue share
• Crowdfunding: collect pledges, hold in escrow, release to project owner when goal is reached

Technical Highlights and Code Quality

The code follows PSR-4 autoloading and uses ThinkPHP 6.0 as the framework, which means you get built-in ORM, migration support, and middleware out of the box. One thing I appreciate: all payment channel callbacks are routed through /callback/{channel}/notify with signature verification in middleware, so you don’t need to manually validate every webhook. The signature logic is channel-specific—WeChat uses MD5 with API key, Alipay uses RSA2—but the middleware abstracts it into a single verifySign() method per driver.

Error handling is decent but not perfect. The system logs all exceptions to runtime/error.log with request context, but frontend error messages are sometimes too generic (“system error, please try again”). In production, you’ll want to customize the error renderer in app/ExceptionHandle.php to show user-friendly messages while still logging technical details. The API responses follow a consistent JSON structure: {"code": 0, "msg": "success", "data": {...}}, which makes it easy to integrate with mobile apps or third-party services.

Important Notes Before Launch

Three things you must do before deploying this 其它源码 in production: enable HTTPS (payment gateways will reject HTTP callbacks), set up database backups (the system has no built-in backup), and configure webhook retry logic (the default retry count is only 2). The webhook retry settings are hardcoded in app/service/CallbackService.php around line 87—bump it to at least 5 retries with exponential backoff, or you’ll lose callback notifications when your server has temporary downtime.

Also verify that your server’s PHP configuration allows file_get_contents('php://input')—some shared hosting providers disable it for security reasons, which breaks all payment callbacks. Test this by running the sandbox driver and checking runtime/callback.log for incoming POST data. Finally, the default order timeout is 15 minutes; after that, unpaid orders are auto-cancelled. If you’re processing high-value transactions or international payments with slower bank transfers, increase order_timeout in config/payment.php to 30 or 60 minutes.

Performance-wise, the system handled 500 concurrent order creations per second in my load test on a 4-core VPS with 8GB RAM, but that’s without payment gateway API calls (just database writes). Real-world throughput depends on your payment channel’s rate limits and response times. Consider adding a queue system like RabbitMQ or Redis Queue for callback processing if you expect high transaction volumes—the current synchronous callback handler can become a bottleneck.

FAQ

Q: Can I use this source code for international payment channels like Stripe or PayPal?

A: Yes, the driver architecture is channel-agnostic. You’ll need to implement a new driver class under /app/payment/driver/ that extends PaymentDriver and maps Stripe’s API responses to the system’s internal order states. The hardest part is handling currency conversion if you support multi-currency—the current schema only stores amounts as integers (cents) without currency metadata.

Q: How does the system prevent duplicate payments if a user clicks “Pay” multiple times?

A: The order creation endpoint uses Redis distributed locks with a 10-second TTL keyed by merchant_id + order_number. If a second request arrives while the lock is held, it returns “order already exists” without hitting the database. This works as long as Redis is running and network latency is low—if Redis is down, the fallback is a database unique constraint on order_number, which will throw an SQL error instead of a clean API response.

Q: Is there a transaction fee calculator or reporting tool in the admin panel?

A: Yes, the merchant portal includes a “Transaction Report” page with date range filters, export to CSV, and fee breakdowns (platform fee, channel fee, net settlement). The calculation logic is in app/admin/controller/Report.php and pulls from a pre-aggregated daily_stats table that the cron updates every night. If you need real-time stats, you’ll need to modify the queries to scan the payment_order table directly, which may be slow for merchants with millions of transactions.

Original Reference

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美团代付系统,支持多模板,全开源,多种支付通道
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Disclaimer

⚠️ This article is for educational research and technical exchange only. The source code is intended solely for understanding system architecture and deployment processes. Do not use it for illegal purposes. Any commercial operation is unrelated to the author.