如图所示，这是服务端要集成的所有微信接口。至于在开放平台申请就不做赘述了。主要流程，1.下单，2.异步通知，3.查询。
一、微信统一下单请求交易
/**
* 微信统一下单请求交易
*
* @param userId
* @param amount
* @return
*/
@RequestMapping(value=Route.Payment.WEIXIN_PAY,method=RequestMethod.POST)
@ResponseBody
public Response pay(@PathVariable("userId") int userId,@PathVariable("amount") String amount) {
log.info("InfoMsg:--- 微信统一下单请求交易开始");
Response resp = this.getReponse();
String message = "";
try {
ThirdPayBean bean = thirdPayService.findByPayId(19);
String mch_id = bean.getMer_no(); //商户号
String notify_url = bean.getReturn_url(); //通知地址
PlatformMutualityManagent pmm = platformMutualityManagentService.findOne(5);
String appid = pmm.getClient_id(); //应用ID
String App_Secret = pmm.getClient_secret();
String nonce_str = WXPayUtil.generateNonceStr(); //随机字符串
String sign = ""; //签名
String sign_type = "MD5"; //签名类型
String body = "循心"; //商品描述 ps:腾讯充值中心-QQ会员充值
String out_trade_no = OrderGeneratedUtils.getOrderNo(); //商户订单号
int total_fee = WXRandomNumberUtil.wx_format_PayAmount(amount); //交易金额
String spbill_create_ip = InetAddress.getLocalHost().getHostAddress(); //终端IP
String trade_type = "APP"; //交易类型
String attach = userId + "|" + bean.getBank_id(); //附加数据 ps:用户|支付方式
StringBuffer sb = new StringBuffer();
sb.append("appid=").append(appid).append("&");
sb.append("attach=").append(attach).append("&");
sb.append("body=").append(body).append("&");
sb.append("mch_id=").append(mch_id).append("&");
sb.append("notify_url=").append(notify_url).append("&");
sb.append("nonce_str=").append(nonce_str).append("&");
sb.append("out_trade_no=").append(out_trade_no).append("&");
sb.append("sign_type=").append(sign_type).append("&");
sb.append("spbill_create_ip=").append(spbill_create_ip).append("&");
sb.append("total_fee=").append(total_fee).append("&");
sb.append("trade_type=").append(trade_type).append("&");
String params = sb.toString();
//需要签名的数据
String stringSignTemp = params + "&key=" + App_Secret;
//MD5签名方式
sign = WXPayUtil.MD5(stringSignTemp).toUpperCase();
Map<String, Object> map = new HashMap<>();
map.put("appid", appid);
map.put("attach", attach);
map.put("body", body);
map.put("mch_id", mch_id);
map.put("notify_url", notify_url);
map.put("nonce_str", nonce_str);
map.put("out_trade_no", out_trade_no);
map.put("sign", sign);
map.put("sign_type", sign_type);
map.put("spbill_create_ip", spbill_create_ip);
map.put("total_fee", total_fee);
map.put("trade_type", trade_type);
List<UHeader> theaderList = new ArrayList<>();
theaderList.add(new UHeader("Content-Type", "application/x-www-form-urlencoded"));
//Httpclient发送请求
String postResponse = MaryunHttpUtils.getPostResponse(weixin_pay_Url, map, theaderList);
//解析返回的XML数据
Map<String, String> response = WXPayUtil.xmlToMap(postResponse);
if(!response.isEmpty() && response.get("return_code").equals("SUCCESS")){
if(response.get("result_code").equals("SUCCESS")) {
boolean result = rechargeRecordService.generatedBills(response,attach);
if(result) {
log.info("InfoMsg:--- 微信统一下单请求交易成功");
}
}else {
message = response.get("err_code_des");
log.error("errorMsg:--- 微信统一下单请求交易解析失败" + message);
}
}else {
log.error("errorMsg:--- 微信统一下单请求交易解析失败" + message);
}
log.info("InfoMsg:--- 微信统一下单请求交易结束");
return resp.success();
} catch (Exception e) {
log.error("errorMsg:--- 微信统一下单请求交易失败" + e.getMessage());
return resp.failure(e.getMessage());
}
}二、微信异步通知
/**
* 微信支付通知地址
*
* @param request
* @return
*/
@RequestMapping(value=Route.Payment.WEIXIN_PAY_NOTIFY,method=RequestMethod.POST)
@ResponseBody
public Response weixin_pay_notify(HttpServletRequest request) {
log.info("infoMsg:--- 微信异步通知开始");
Response resp = this.getReponse();
BufferedReader reader = null;
String wx_map = "";
try {
PlatformMutualityManagent pmm = platformMutualityManagentService.findOne(5);
Assert.notNull(pmm);
String app_key = pmm.getClient_id();
reader = request.getReader();
String line = "";
String xmlString = null;
StringBuffer inputString = new StringBuffer();
while ((line = reader.readLine()) != null) {
inputString.append(line);
}
xmlString = inputString.toString();
request.getReader().close();
if(!StringUtils.isBlank(xmlString)) {
Map<String, String> return_map = WXPayUtil.xmlToMap(xmlString);
//验签
if(WXPayUtil.isSignatureValid(xmlString, app_key)) {
if(return_map.get("return_map").equals("SUCCESS")) {
//TODO 账变，修改状态，到账提醒
Double amount = Double.parseDouble(return_map.get("total_fee"));
String passbackParams = return_map.get("total_fee");
String order_no = return_map.get("out_trade_no");
boolean result = rechargeRecordService.updateBill(amount,passbackParams,order_no);
if(result) {
Map<String, String> map = new HashMap<>();
map.put("return_map", "SUCCESS");
map.put("return_msg", "OK");
wx_map = WXPayUtil.mapToXml(map);
}
}
}
}
log.info("infoMsg:--- 微信异步通知失败");
return resp.success(wx_map);
} catch (Exception e) {
log.error("errorMsg:--- 微信通知失败" + e.getMessage());
return resp.failure(e.getMessage());
}
}三、微信支付订单查询
/**
* 微信支付订单查询
*
* @param transaction_id 微信订单号
* @param out_trade_no 平台订单号
* @return
*/
@RequestMapping(value=Route.Payment.WEIXIN_PAY_QUERY,method=RequestMethod.POST)
@ResponseBody
public Response weixin_pay_query(@PathVariable("transaction_id") String transaction_id,@PathVariable("out_trade_no") String out_trade_no) {
log.info("infoMsg:--- 微信支付订单查询开始");
Response resp = this.getReponse();
String sign = "";
String message = "";
Map<String, String> return_map = null;
try {
ThirdPayBean bean = thirdPayService.findByPayId(19);
Assert.notNull(bean);
String mch_id = bean.getMer_no(); //商户号
PlatformMutualityManagent pmm = platformMutualityManagentService.findOne(5);
Assert.notNull(pmm);
String appid = pmm.getClient_id(); //应用ID
String App_Secret = pmm.getClient_secret();
String nonce_str = WXPayUtil.generateNonceStr(); //随机字符串
StringBuffer sb = new StringBuffer();
sb.append("appid=").append(appid).append("&");
sb.append("nonce_str=").append(nonce_str).append("&");
sb.append("out_trade_no=").append(out_trade_no).append("&");
String params = sb.toString();
//需要签名的数据
String stringSignTemp = params + "&key=" + App_Secret;
//MD5签名方式
sign = WXPayUtil.MD5(stringSignTemp).toUpperCase();
Map<String, Object> req_map = new HashMap<>();
req_map.put("appid", appid);
req_map.put("mch_id", mch_id);
req_map.put("transaction_id", transaction_id);
req_map.put("out_trade_no", out_trade_no);
req_map.put("nonce_str", nonce_str);
req_map.put("sign", sign);
List<UHeader> headerList = new ArrayList<>();
headerList.add(new UHeader("Content-Type", "application/x-www-form-urlencoded"));
String postResponse = MaryunHttpUtils.getPostResponse(weixin_query_Url, req_map, headerList);
if(StringUtils.trim(postResponse).equals("")) {
return_map = WXPayUtil.xmlToMap(postResponse);
if(!return_map.isEmpty()) {
String return_code = return_map.get("return_code");
if(return_code.equals("SUCCESS")) {
String result_code = return_map.get("return_code");
if(result_code.equals("SUCCESS")) {
message = (String) req_map.get("trade_state_desc");
}
}else {
message = (String) req_map.get("err_code_des");
}
}
}
log.info("infoMsg:--- 微信支付订单查询结束");
return resp.success(return_map);
} catch (Exception e) {
log.error("erroroMsg:--- 微信支付订单查询失败" + e.getMessage() + message);
return resp.failure(e.getMessage() + message);
}
}
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