[Java] 【分享】微信APP支付Java版的一個小demo
阿新 • • 發佈:2018-12-21
前一段時間公司搞微信的APP支付,看過微信的官方文件之後只能感嘆自己果然還是太嫩,只有思想,連個demo都沒有,上網到處查詢資料之後找了一個博主分享的看著相對靠譜的下載下來配置好了,改了一些回撥方面的錯誤,終於能正常執行,分享一下,給需要的人! 個人覺得核心部分的程式碼: 簽名: //引數:開始生成簽名
SortedMap<Object,Object> parameters = new TreeMap<Object,Object>(); parameters.put("appid", appid); parameters.put("mch_id", mch_id); parameters.put("nonce_str", nonce_str); parameters.put("body", body); parameters.put("nonce_str", nonce_str); parameters.put("detail", detail); parameters.put("attach", attach); parameters.put("out_trade_no", out_trade_no); parameters.put("total_fee", total_fee); parameters.put("time_start", time_start); parameters.put("time_expire", time_expire); parameters.put("notify_url", notify_url); parameters.put("trade_type", trade_type); parameters.put("spbill_create_ip", spbill_create_ip);
/** * 微信支付簽名演算法sign * @param characterEncoding * @param parameters * @Return */ @SuppressWarnings("rawtypes") public static String createSign(String characterEncoding,SortedMap<Object,Object> parameters){ StringBuffer sb = new StringBuffer(); Set es = parameters.entrySet();//所有參與傳參的引數按照accsii排序(升序) Iterator it = es.iterator(); while(it.hasNext()) { Map.Entry entry = (Map.Entry)it.next(); String k = (String)entry.getKey(); Object v = entry.getValue(); if(null != v && !"".equals(v) && !"sign".equals(k) && !"key".equals(k)) { sb.append(k + "=" + v + "&"); } } sb.append("key=" + Key); System.out.println("字串拼接後是:"+sb.toString()); String sign = MD5Util.MD5Encode(sb.toString(), characterEncoding).toUpperCase(); return sign; }
將一坨引數包裝成XML格式丟給微信:
/** * 構造xml引數 * @param xml * @return */ public static String xmlInfo(Unifiedorder unifiedorder){ //構造xml引數的時候,至少有10個必傳引數 /* * <xml> <appid>wx2421b1c4370ec43b</appid> <attach>支付測試</attach> <body>JSAPI支付測試</body> <mch_id>10000100</mch_id> <nonce_str>1add1a30ac87aa2db72f57a2375d8fec</nonce_str> <notify_url>[url]http://wxpay.weixin.qq.com/pub_v2/pay/notify.v2.php</notify_url>[/url] <openid>oUpF8uMuAJO_M2pxb1Q9zNjWeS6o</openid> <out_trade_no>1415659990</out_trade_no> <spbill_create_ip>14.23.150.211</spbill_create_ip> <total_fee>1</total_fee> <trade_type>JSAPI</trade_type> <sign>0CB01533B8C1EF103065174F50BCA001</sign> </xml> */
if(unifiedorder!=null){
StringBuffer bf = new StringBuffer();
bf.append("<xml>");
bf.append("<appid><![CDATA[");
bf.append(unifiedorder.getAppid());
bf.append("]]></appid>");
bf.append("<mch_id><![CDATA[");
bf.append(unifiedorder.getMch_id());
bf.append("]]></mch_id>");
bf.append("<nonce_str><![CDATA[");
bf.append(unifiedorder.getNonce_str());
bf.append("]]></nonce_str>");
bf.append("<sign><![CDATA[");
bf.append(unifiedorder.getSign());
bf.append("]]></sign>");
bf.append("<body><![CDATA[");
bf.append(unifiedorder.getBody());
bf.append("]]></body>");
bf.append("<detail><![CDATA[");
bf.append(unifiedorder.getDetail());
bf.append("]]></detail>");
bf.append("<attach><![CDATA[");
bf.append(unifiedorder.getAttach());
bf.append("]]></attach>");
bf.append("<out_trade_no><![CDATA[");
bf.append(unifiedorder.getOut_trade_no());
bf.append("]]></out_trade_no>");
bf.append("<total_fee><![CDATA[");
bf.append(unifiedorder.getTotal_fee());
bf.append("]]></total_fee>");
bf.append("<spbill_create_ip><![CDATA[");
bf.append(unifiedorder.getSpbill_create_ip());
bf.append("]]></spbill_create_ip>");
bf.append("<time_start><![CDATA[");
bf.append(unifiedorder.getTime_start());
bf.append("]]></time_start>");
bf.append("<time_expire><![CDATA[");
bf.append(unifiedorder.getTime_expire());
bf.append("]]></time_expire>");
bf.append("<notify_url><![CDATA[");
bf.append(unifiedorder.getNotify_url());
bf.append("]]></notify_url>");
bf.append("<trade_type><![CDATA[");
bf.append(unifiedorder.getTrade_type());
bf.append("]]></trade_type>");
bf.append("</xml>");
return bf.toString();
}
return "";
}
//構造xml引數
String xmlInfo = HttpXmlUtils.xmlInfo(unifiedorder);
String wxUrl = "https://api.mch.weixin.qq.com/pay/unifiedorder";
String method = "POST";
String weixinPost = HttpXmlUtils.httpsRequest(wxUrl, method, xmlInfo).toString();
然後開始統一下單得到預支付ID,包裝好給app端,app端處理好後再由微信開始回撥,回撥就會跳轉到你的回撥地址上,微信說建議校驗下簽名,照做就是的!
/**
* 微信支付回撥
* @param request
* @param resposne
*/
@RequestMapping(value="/notifyUrlWeixin")
public void notifyWeixinPayment(HttpServletRequest request,HttpServletResponse response){
try{
BufferedReader reader = request.getReader();
String line = "";
StringBuffer inputString = new StringBuffer();
try{
PrintWriter writer = response.getWriter();
while ((line = reader.readLine()) != null) {
inputString.append(line);
}
if(reader!=null){
reader.close();
}
System.out.println("----[微信回撥]接收到的報文---"+inputString.toString());
if(!StringUtils.isEmpty(inputString.toString())){
WXPayResult wxPayResult = JdomParseXmlUtils.getWXPayResult(inputString.toString());
if("SUCCESS".equalsIgnoreCase(wxPayResult.getReturn_code())){
SortedMap<Object,Object> parameters = new TreeMap<Object,Object>();
parameters.put("appid", wxPayResult.getAppid());
parameters.put("attach", wxPayResult.getAttach());
parameters.put("bank_type", wxPayResult.getBank_type());
parameters.put("cash_fee", wxPayResult.getCash_fee());
parameters.put("fee_type", wxPayResult.getFee_type());
parameters.put("is_subscribe", wxPayResult.getIs_subscribe());
parameters.put("mch_id", wxPayResult.getMch_id());
parameters.put("nonce_str", wxPayResult.getNonce_str());
parameters.put("openid", wxPayResult.getOpenid());
parameters.put("out_trade_no", wxPayResult.getOut_trade_no());
parameters.put("result_code", wxPayResult.getResult_code());
parameters.put("return_code", wxPayResult.getReturn_code());
parameters.put("time_end", wxPayResult.getTime_end());
parameters.put("total_fee", wxPayResult.getTotal_fee());
parameters.put("trade_type", wxPayResult.getTrade_type());
parameters.put("transaction_id", wxPayResult.getTransaction_id());
//反校驗簽名
String sign = WXSignUtils.createSign("UTF-8", parameters);
if(sign.equals(wxPayResult.getSign())){
//修改訂單的狀態
orderService.alipayNotifyPayment(wxPayResult.getOut_trade_no(), wxPayResult.getTransaction_id(),2);
writer.write(HttpXmlUtils.backWeixin("SUCCESS","OK"));
}else{
writer.write(HttpXmlUtils.backWeixin("FAIL","簽名失敗"));
}
}else{
writer.write(HttpXmlUtils.backWeixin("FAIL",wxPayResult.getReturn_msg()));
System.out.println("---------微信支付返回Fail----------"+wxPayResult.getReturn_msg());
}
if(writer!=null){
writer.close();
}
}else{
writer.write(HttpXmlUtils.backWeixin("FAIL","未獲取到微信返回的結果"));
}
}catch(Exception e){
e.printStackTrace();
}
}catch(Exception ex){
ex.printStackTrace();
}
}
到這裡差不多這個流程就算完了!!!!