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co-wechat-pay-api

v1.0.0

Published

weixin payment with co

Downloads

2

Readme

co-weixin-pay

weixin-pay with co

Usage

install from npm

npm install co-wechat-pay-api

创建统一支付订单

var WXPay = require('co-wechat-pay-api');

var wxpay = WXPay({
	appid: 'xxxxxxxx',
	mch_id: '1234567890',
	partner_key: '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.createUnifiedOrder({
	body: '扫码支付测试',
	out_trade_no: '20140703'+ Math.random().toString().substr(2, 10),
	total_fee: 1,
	spbill_create_ip: '192.168.2.210',
	notify_url: 'http://wxpay_notify_url',
	trade_type: 'NATIVE',
	product_id: '1234567890'
});

查询订单

// 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

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

退款接口

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)

模式一

提供一个生成支付二维码链接的函数,把url生成二维码给用户扫。

var url = wxpay.createMerchantPrepayUrl({ product_id: '123456' });

商户后台收到微信的回调之后,调用 createUnifiedOrder() 生成预支付交易单,将结果的XML数据返回给微信。

什么是模式一?

模式二

直接调用 createUnifiedOrder() 函数生成预支付交易单,将结果中的 code_url 生成二维码给用户扫。

什么是模式二?

公众号支付 (JS API)

生成JS API支付参数,发给页面

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'
});

网页调用参数(以ejs为例)

WeixinJSBridge.invoke(
	"getBrandWCPayRequest", <%-JSON.stringify(payargs)%>, function(res){
		if(res.err_msg == "get_brand_wcpay_request:ok" ) {
    		// success
    	}
});

中间件

商户服务端处理微信的回调(koa为例)


app.use(function *() {
	var result = yield wxpay.parseCallbacl(this);

	// handle with callback data
	result.data;
	// ...

	// return success
	this.body = result.success;
	// return fail
	this.body = result.fail;
});

企业支付

var result = yield wxpay.transfer({
	partner_trade_no: '3123123123', // 订单号
	openid: 'openid',
	amount: 100, // 分为单位
	desc: '描述',
	spbill_create_ip: '192.168.2.210', // ip,
	check_name: 'NO_CHECK', //默认为 NO_CHECK, 可不填
});