前言
说实话最近才接了点项目.项目里面需要使用微信支付进行付款.然后我遇到不少问题.这里总结下.
为什么使用best-pay-sdk?
额..看到微信官方的头就痛了.不想看了.微信搞了一套又一套.太麻烦,然后发现这个第三方的sdk.最终确实可以使用了.
第三方sdk的Github地址
如何使用
要求
需要在Jdk版本>1.8上运行.不满足的请自行绕道.
导入maven依赖
<dependency>
<groupId>cn.springboot</groupId>
<artifactId>best-pay-sdk</artifactId>
<version>1.2.0</version>
</dependency>
配置
添加配置文件
配置信息如上
这里介绍一下参数都是代表什么意思
- mpAppId : appid(在微信公众平台查看)
- mchId:商户号(在微信支付平台查看)
- mchKey:密匙(在微信支付平台自行设置,要求32位.建议使用随机密码)
- keyPath:退款密匙(应该这么叫吧.需要去微信支付平台下载.指定密匙的绝对地址)
- notifyUrl:微信支付完成的通知地址
前期代码编写
注意.大部分的代码请参照官方的demo.比如如何从配置文件数据到类中就不用我说了.
前期配置类
***************以上的代码实际上不用修改啥********************************
支付代码编写
注意这里是关键
先看我的代码,可能比较复杂一些.
/**
* 支付相关
*
* @version 1.0 2017/3/2
* @auther <a href="mailto:lly835@163.com">廖师兄</a>
* @since 1.0
* 不需要进行过滤
*/
@Controller
@Slf4j
public class PayController {
@Autowired
private BestPayServiceImpl bestPayService;
@Autowired
private OrderDao orderDao;
@Autowired
private OrderService orderService;
@Autowired
private AddMoneyDao addMoneyDao;
@Autowired
private AddMoneyService addMoneyService;
@Autowired
private UserDao userDao;
@Autowired
private AddMoneyComboDao addMoneyComboDao;
/**
* 发起支付
*
* @param orderid 订单id
* @param addmoneyid 充值订单
*/
@RequestMapping(value = "/pay", method = RequestMethod.GET)
public ModelAndView pay(
Map<String, Object> map, HttpSession session, @RequestParam(required = false) String orderid, @RequestParam(required = false) String addmoneyid) {
User user = (User) session.getAttribute(Constants.CURRENTUSER);
// User user = userDao.findOne("4028fb82647f166d01647f167cbe0000");
log.info("请求订单:获取到的订单id为:" + orderid);
log.info("请求订单:获取到的充值id为:" + addmoneyid);
if (orderid == null && addmoneyid == null) {
//不能出现两个参数同时不存在
return new ModelAndView("wxpay/error", map);
}
if (orderid != null && addmoneyid != null) {
//不能出现两个参数同时存在
return new ModelAndView("wxpay/error", map);
}
PayResponse payResponse = null;
if (orderid != null) {
payResponse = handlerOrder(orderid, user);
} else if (addmoneyid != null) {
payResponse = handlerAddMoney(addmoneyid, user);
} else {
return new ModelAndView("wxpay/error", map);
}
map.put("payResponse", payResponse);
log.info("放入的payResponse对象为:" + payResponse);
if (payResponse == null) {
return new ModelAndView("wxpay/error", map);
}
return new ModelAndView("wxpay/index", map);
}
/**
* 异步回调
*/
@RequestMapping(value = "/notify", method = RequestMethod.POST)
public ModelAndView notify(@RequestBody String notifyData) throws Exception {
Order order = null;
AddMoney addMoney = null;
try {
log.info("【异步回调】request={}", notifyData);
PayResponse response = bestPayService.asyncNotify(notifyData);
log.info("【异步回调】response={}", JsonUtil.toJson(response));
String orderId = response.getOrderId();
order = orderDao.findOne(orderId);
addMoney = addMoneyDao.findOne(orderId);
if (order != null && addMoney != null) {
//那就很尴尬了- -.还是退款吧.我可以去买彩票了.
log.info("普通订单和充值订单uuid居然相同了..." + response);
orderService.moneyback(orderId);
addMoneyService.moneyBack(orderId);
} else {
if (order != null && !order.isIsmoneyback()) {
BigDecimal bigDecimal = new BigDecimal(order.getNeedpay());
BigDecimal subtract = bigDecimal.subtract(new BigDecimal(String.valueOf(response.getOrderAmount()))).abs();
if (subtract.doubleValue() < 0.01) {
log.info("普通订单完成" + order);
order.setPayd(true);
order.setCompletedate(new Date());
try {
orderService.setPay(order);
} catch (Exception e) {
log.warn(e.getMessage() + " " + order + " 出现支付异常.进行退款");
}
//说明订单支付成功了
} else {
orderService.moneyback(orderId);
}
} else {
//判断addmoney不等于null 并且不是已经退款的订单
if (addMoney != null && !addMoney.isIsbackmoney()){
BigDecimal bigDecimal = new BigDecimal(addMoney.getMoney());
BigDecimal subtract = bigDecimal.subtract(new BigDecimal(String.valueOf(response.getOrderAmount()))).abs();
if (subtract.doubleValue() < 0.01) {
if (!addMoney.isComplete()) {
log.info("充值订单完成" + addMoney);
addMoney.setComplete(true);
addMoney.setCompletedate(new Date());
addMoneyService.setcomplete(addMoney);
}
//说明订单支付成功了
} else {
addMoneyService.moneyBack(orderId);
}
}
}
}
} catch (Exception e) {
if (order != null) {
orderService.moneyback(order.getId());
} else if (addMoney != null) {
addMoneyService.moneyBack(addMoney.getId());
}
}
return new ModelAndView("wxpay/success");
}
/**
* 处理订单付款请求
*
* @param orderid
* @param user
* @return
*/
private PayResponse handlerOrder(String orderid, User user) {
if (user != null) {
Order order = orderDao.findOne(orderid);
if (order == null || order.isPayd() || order.isIssend()) {
log.debug("没有找到订单");
return null;
}
log.debug("获取到的订单为:" + order);
PayRequest request = new PayRequest();
//支付请求参数
request.setPayTypeEnum(BestPayTypeEnum.WXPAY_H5);
request.setOrderId(order.getId());
//把String类型进行转换
request.setOrderAmount(new BigDecimal(order.getNeedpay()).doubleValue());
request.setOrderName(order.getOwnercleaner().getName() + order.getOrderyype());
log.info("当前支付的用户为:" + user);
request.setOpenid(user.getOpenid());
log.info("【发起支付】request={}", JsonUtil.toJson(request));
PayResponse payResponse = bestPayService.pay(request);
log.info("【发起支付】response={}", JsonUtil.toJson(payResponse));
return payResponse;
} else {
return null;
}
}
private PayResponse handlerAddMoney(String addmoneyid, User user) {
if (user != null) {
AddMoney addMoney = addMoneyDao.findOne(addmoneyid);
log.info("查询出的充值类为:" + addMoney);
if (addMoney == null || addMoney.isComplete()) return null;
String machineid = addMoney.getMachineid();
List<Order> machineidEquals = orderDao.findOrderByMachineid(machineid);
log.info("查出的机器类为;" + machineidEquals);
if (machineidEquals == null || machineidEquals.size() == 0) {
return null;
}
boolean issend = machineidEquals.get(0).isIssend();
//判断租借机器是否已经发出.如果已经发货才能够开始进行充值
if (!issend) {
//说明还没有发货.
return null;
}
PayRequest request = new PayRequest();
//支付请求参数
request.setPayTypeEnum(BestPayTypeEnum.WXPAY_H5);
request.setOrderId(addMoney.getId());
//把String类型进行转换
request.setOrderAmount(new BigDecimal(addMoney.getMoney()).doubleValue());
request.setOrderName(addMoney.getMachineid() + " 充值" + addMoney.getCombodesc());
request.setOpenid(user.getOpenid());
log.info("【发起支付】request={}", JsonUtil.toJson(request));
PayResponse payResponse = bestPayService.pay(request);
log.info("【发起支付】response={}", JsonUtil.toJson(payResponse));
return payResponse;
}
return null;
}
@RequestMapping(value = "success.do", method = RequestMethod.GET)
public String success() {
return "wxpay/success";
}
@RequestMapping(value = "error.do", method = RequestMethod.GET)
public String error() {
return "wxpay/error";
}
}
我们在看一下官方的代码,我的代码里残渣了太多自己的东西了.但是官方的代码又简略了一些.我又加了一些注释
@Autowired
private BestPayServiceImpl bestPayService;
/**
* 发起支付
*/
@GetMapping(value = "/pay")
public ModelAndView pay(@RequestParam("openid") String openid,
Map<String, Object> map) {
PayRequest request = new PayRequest();
Random random = new Random();
//支付请求参数
request.setPayTypeEnum(BestPayTypeEnum.WXPAY_H5);
//这里你需要你的唯一的订单号
request.setOrderId(String.valueOf(random.nextInt(1000000000)));
//支付的金额
request.setOrderAmount(0.01);
//商品的名称
request.setOrderName("最好的支付sdk");
//h5获取用户登录信息中获取到openid
request.setOpenid(openid);
log.info("【发起支付】request={}", JsonUtil.toJson(request));
PayResponse payResponse = bestPayService.pay(request);
log.info("【发起支付】response={}", JsonUtil.toJson(payResponse));
map.put("payResponse", payResponse);
return new ModelAndView("pay/create", map);
}
/**
* 异步回调
*/
@PostMapping(value = "/notify")
public ModelAndView notify(@RequestBody String notifyData) throws Exception {
log.info("【异步回调】request={}", notifyData);
PayResponse response = bestPayService.asyncNotify(notifyData);
log.info("【异步回调】response={}", JsonUtil.toJson(response));
return new ModelAndView("pay/success");
}
创建订单时候首先你需要先调用pay这个函数.然后支付成功之后会调用notify这个函数.然后根据需要判断订单是否完成.
细心的同学会发现代码返回到了一个视图pay/create.这里是需要调用微信的接口的.我们看官方的ftl文件是怎么样的.
在这里.我们其实不需要修改代码.这里的参数传入的都是第三方的best-pay-sdk生成好的.我们不需要关心细节.
<script>
function onBridgeReady(){
WeixinJSBridge.invoke(
'getBrandWCPayRequest', {
"appId":"${payResponse.appId}", //公众号名称，由商户传入
"timeStamp":"${payResponse.timeStamp}", //时间戳，自1970年以来的秒数
"nonceStr":"${payResponse.nonceStr}", //随机串
"package":"${payResponse.packAge}",
"signType":"MD5", //微信签名方式：
"paySign":"${payResponse.paySign}" //微信签名
},
function(res){
if(res.err_msg == "get_brand_wcpay_request:ok" ) {
alert('支付成功');
}else if(res.err_msg == "get_brand_wcpay_request:cancel") {
alert('支付过程中用户取消');
}else if(res.err_msg == "get_brand_wcpay_request:fail") {
alert('支付失败');
}else {
alert('未知异常');
}
}
);
}
if (typeof WeixinJSBridge == "undefined"){
if( document.addEventListener ){
document.addEventListener('WeixinJSBridgeReady', onBridgeReady, false);
}else if (document.attachEvent){
document.attachEvent('WeixinJSBridgeReady', onBridgeReady);
document.attachEvent('onWeixinJSBridgeReady', onBridgeReady);
}
}else{
onBridgeReady();
}
</script>
顺便附带一份我写的thymelaf的页面代码.效果和上面一样
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<script th:inline="javascript">
/*<![CDATA[*/
function onBridgeReady() {
WeixinJSBridge.invoke(
'getBrandWCPayRequest', {
"appId": [[${payResponse.appId}]], //公众号名称，由商户传入
"timeStamp": [[${payResponse.timeStamp}]], //时间戳，自1970年以来的秒数
"nonceStr": [[${payResponse.nonceStr}]], //随机串
"package": [[${payResponse.packAge}]],
"signType": "MD5", //微信签名方式：
"paySign": [[${payResponse.paySign}]] //微信签名
},
function (res) {
if (res.err_msg == "get_brand_wcpay_request:ok") {
// alert('支付成功');
window.location.href = "/ac/success.do";
} else if (res.err_msg == "get_brand_wcpay_request:cancel") {
window.location.href = "/ac/buydetails.so";
} else if (res.err_msg == "get_brand_wcpay_request:fail") {
window.location.href = "/ac/error.do";
} else {
alert('未知异常');
}
}
);
}
if (typeof WeixinJSBridge == "undefined") {
if (document.addEventListener) {
document.addEventListener('WeixinJSBridgeReady', onBridgeReady, false);
} else if (document.attachEvent) {
document.attachEvent('WeixinJSBridgeReady', onBridgeReady);
document.attachEvent('onWeixinJSBridgeReady', onBridgeReady);
}
} else {
onBridgeReady();
}
/*]]>*/
</script>
</html>
到这里.通过判断就可以知道订单是否支付完成了.有兴趣的仔细看看我上面的我打的代码.我这里有两种支付.一种是普通订单支付.一种是续费充值订单.所以我写了一些判断.
退款操作
退款操作时需要确定自己的退款秘钥是不是已经下载好了.并且配置完成了.否则会有异常.
官方退款代码:
@Autowired
private BestPayServiceImpl bestPayService;
//就这么几句
RefundRequest refundRequest = new RefundRequest();
//这里传入唯一的订单号
refundRequest.setOrderId(addMoney.getId());
refundRequest.setOrderAmount(new BigDecimal(addMoney.getMoney()).doubleValue());
refundRequest.setPayTypeEnum(BestPayTypeEnum.WXPAY_H5);
log.info("【微信退款】request={}", JsonUtil.toJson(refundRequest));
RefundResponse refundResponse = bestPayService.refund(refundRequest);
log.info("[微信退款]" + refundResponse);
我的退款代码:
尤其需要注意安全问题.不能万一已经退了款某个商品数据库还是正常显示这样子...
@Transactional
public AddMoney moneyBack(String addmoneyid) {
AddMoney addMoney = addMoneyDao.findOne(addmoneyid);
if (addMoney == null) {
return null;
}
if (addMoney.isComplete()) {
//撤销付款记录
addMoney.setComplete(false);
//设置成已经退款
addMoney.setIsbackmoney(true);
// addMoney.setCompletedate(null);
//获取充值订单完成时候的日期
Date completedate = addMoney.getCompletedate();
//获取机器码
String machineid = addMoney.getMachineid();
LeaseMachine leaseMachine = leaseMachineDao.findByMachineid(machineid);
if (leaseMachine == null) {
//机器已经不存在了.不能进行退款
throw new RuntimeException("退款失败.机器不存在");
}
Calendar calendar = Calendar.getInstance();
//获取到过期的时间
Date date = leaseMachine.getExpirationtime();
if (date != null && date.getTime() < System.currentTimeMillis()) {
//如果现在的时间已经超过了过期的时间的话.就不能退款了.他已经把钱都用掉了.
return null;
}
if (date != null) {
calendar.setTime(date);
//退款之后减去相应的天数
calendar.add(Calendar.MONTH, (0 - Math.abs(addMoney.getPaymonth())));
Date calendarTime = calendar.getTime();
leaseMachine.setExpirationtime(calendarTime);
leaseMachineDao.save(leaseMachine);
}
// leaseMachine.setExpirationtime();
//撤销订单.
AddMoney money = addMoneyDao.save(addMoney);
//只有已经支付的人才能够退款
RefundRequest refundRequest = new RefundRequest();
refundRequest.setOrderId(addMoney.getId());
refundRequest.setOrderAmount(new BigDecimal(addMoney.getMoney()).doubleValue());
refundRequest.setPayTypeEnum(BestPayTypeEnum.WXPAY_H5);
log.info("【微信退款】request={}", JsonUtil.toJson(refundRequest));
RefundResponse refundResponse = bestPayService.refund(refundRequest);
log.info("[微信退款]" + refundResponse);
if (refundResponse == null) {
throw new RuntimeException("退款出现问题");
}
return money;
}
return null;
}
总结
涉及钱的一定要小心 涉及钱的一定要小心 涉及钱的一定要小心
考虑考虑并发会不会有问题
文章作者:恶搞大王
