https://github.com/perzy/co-wechat-payment

Wechat payment lib for node.js koa framework.
https://github.com/perzy/co-wechat-payment

koa nodejs wechat-payment

Last synced: 2 months ago
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Wechat payment lib for node.js koa framework.

• Host: GitHub
• URL: https://github.com/perzy/co-wechat-payment
• Owner: perzy
• License: mit
• Created: 2016-07-01T06:31:59.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2017-11-17T11:05:39.000Z (about 7 years ago)
• Last Synced: 2024-10-29T08:28:24.694Z (3 months ago)
• Topics: koa, nodejs, wechat-payment
• Language: JavaScript
• Size: 11.7 KB
• Stars: 21
• Watchers: 3
• Forks: 13
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# co-wechat-payment

微信支付 for node.js

[![npm version](https://badge.fury.io/js/co-wechat-payment.svg)](http://badge.fury.io/js/co-wechat-payment)

## Installation

```

npm install co-wechat-payment

```

## Usage

创建统一支付订单

```js

var WXPay = require('co-wechat-payment');

var wxpay = new WXPay({

	appId: 'xxxxxxxx',

	mchId: '1234567890',

	partnerKey: 'xxxxxxxxxxxxxxxxx', //微信商户平台API密钥

	pfx: fs.readFileSync('./wxpay_cert.p12'), //微信商户平台证书

});

var result = yield wxpay.unifiedOrder({

	body: 'js H5支付',

	out_trade_no: '20160701'+Math.random().toString().substr(2, 10),

	total_fee: 1, // 1分钱

	spbill_create_ip: '10.10.10.10',

	notify_url: 'http://xx.xx.xx/wxpay/notify/',

	trade_type: 'JSAPI',

	product_id: '1234567890'

});

```

查询订单

https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_2

```js

// 通过微信订单号查

var result = yield wxpay.queryOrder({ transaction_id:"xxxxxx" });

// 通过商户订单号查

var result = yield wxpay.queryOrder({ out_trade_no:"xxxxxx" });

```

关闭订单

https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_3

```js

var result = yield wxpay.closeOrder({ out_trade_no:"xxxxxx"});

```

退款接口

```js

var params = {

	appid: 'xxxxxxxx',

	mch_id: '1234567890',

    op_user_id: '商户号即可',

    out_refund_no: '20140703'+Math.random().toString().substr(2, 10),

    total_fee: '1', //原支付金额

    refund_fee: '1', //退款金额

    transaction_id: '微信订单号'

};

var result = yield wxpay.refund(params);

```

### 原生支付 (NATIVE)

### 公众号支付 (JS API)

生成JS API支付参数，发给页面

```js

var result = yield wxpay.getBrandWCPayRequestParams({

	openid: '微信用户 openid',

	body: '公众号支付测试',

    detail: '公众号支付测试',

	out_trade_no: '20150331'+Math.random().toString().substr(2, 10),

	total_fee: 1,

	spbill_create_ip: '192.168.2.210',

	notify_url: 'http://wxpay_notify_url'

});

yield this.render('/wechat/pay',{payArgs:result});

```

网页调用参数（以ejs为例）

```js

WeixinJSBridge.invoke(

	"getBrandWCPayRequest", <%-JSON.stringify(payArgs)%>, function(res){

		if(res.err_msg == "get_brand_wcpay_request:ok" ) {

    		// success

    	}

});

```

根据之前预创建订单接口返回的prepare_id参数，生成JS API支付参数，发给页面

```js

var result = yield wxpay.getJsPayRequestParams('xxxxx');

yield this.render('/wechat/pay',{payArgs:result});

```

### 中间件

商户服务端处理微信的回调（koa为例）

```js

var wechatBodyParser = require('co-wechat-body');

app.use(wechatBodyParser(options));

// 支付结果异步通知

router.post('/wechat/payment/notify', wechatPayment.middleware(), function* (){

  var message = this.request.body;

  // 处理你的订单状态更新逻辑. [warn] 注意，分布式并发情况下需要加锁处理.

  // do something...

  // 向微信返回处理成功信息

  this.body = 'OK';

  // 如果业务逻辑处理异常, 向微信返回错误信息，微信服务器会继续通知.

  // this.body =  new Error('server error');

});

```