首先我们学习任何东西要先看官网
下面是支付业务流程
我们具体用代码去实现上面的业务流程
功能截图
代码截图
pay(){
//调用后台生成订单
var orderNumber = "20210101123456";
var amount = 0.01;
WxPay.wxpay(app, amount, orderNumber, '支付测试', function(code) {
// 下单成功，跳转到订单管理界面
if (code == 0) {
}
});
},function wxpay(app, money, orderNum, goodsName, callback) {
wx.request({
header: {
"token": app.globalData.token
},
url: app.globalData.domain + '/api/pay/wechat/unifiedOrder',
data: {
storeId: app.globalData.storeId,
orderNum: orderNum,
totalAmount: money,
goodsName: goodsName
},
success: function (res) {
if (res.data.code == 0) {
// 发起支付
wx.requestPayment({
timeStamp: res.data.data.timeStamp,
nonceStr: res.data.data.nonceStr,
package: res.data.data.package,
signType: 'MD5',
paySign: res.data.data.paySign,
fail: function (resp) {
wx.showToast({
title: '支付失败',
icon: 'none'
})
callback(1);
},
success: function () {
wx.showToast({
title: '支付成功',
icon: 'none'
})
callback(0);
}
})
} else {
wx.showToast({
title: res.data.msg,
icon: 'none'
})
callback(1);
}
}
})
}/**
* 统一下单(详见https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_1)
* 在发起微信支付前，需要调用统一下单接口，获取"预支付交易会话标识"
* 接口地址：https://api.mch.weixin.qq.com/pay/unifiedorder
*
* @param request 请求对象，注意一些参数如appid、mchid等不用设置，方法内会自动从配置对象中获取到（前提是对应配置中已经设置）
*/
@GetMapping("/unifiedOrder")
public R unifiedOrder(@RequestAttribute("userId") Long userId, String orderNum, BigDecimal totalAmount, String goodsName, HttpServletRequest req) throws WxPayException {
WxPayUnifiedOrderRequest request = new WxPayUnifiedOrderRequest();
request.setOutTradeNo(orderNum);
MemberEntity member = memberService.queryObject(userId);
request.setOpenid(member.getOpenid());
request.setBody(goodsName);
request.setNotifyUrl(notifyUrl);
request.setTotalFee(totalAmount.multiply(new BigDecimal(100)).intValue());
request.setSpbillCreateIp(IPUtils.getIpAddr(req));
request.setTradeType("JSAPI");
WxPayUnifiedOrderResult result = wxPayService.unifiedOrder(request);
String timeStamp = String.valueOf(System.currentTimeMillis() / 1000);
String nonceStr = String.valueOf(System.currentTimeMillis());
//signKey 商户平台设置的密钥key
//签名字段：appId，timeStamp，nonceStr，package，signType
Map params = new HashMap();
params.put("appId", wxPayService.getConfig().getAppId());
params.put("timeStamp", timeStamp);
params.put("nonceStr", nonceStr);
params.put("package", "prepay_id=" + result.getPrepayId());
params.put("signType", "MD5");
String sign = SignUtils.createSign(params, "MD5", wxPayService.getConfig().getMchKey(), new String[0]);
params.put("paySign", sign);
return R.ok().put("data", params);
}
