微信app支付服務(wù)端的實現(xiàn)方法，供大家參考，具體內(nèi)容如下
引言
主要實現(xiàn)app支付統(tǒng)一下單、異步通知、調(diào)起支付接口、支付訂單查詢、申請退款、查詢退款功能；封裝了https對發(fā)起退款的證書校驗、簽名、xml解析等。
支付流程
具體支付流程參考“微信app”文檔，文檔地址
app支付：app端點擊下單—-服務(wù)端生成訂單，并調(diào)起“統(tǒng)一下單”，返回app支付所需參數(shù)—–app端“調(diào)起支付接口“，發(fā)起支付—-微信服務(wù)器端調(diào)用服務(wù)端回調(diào)地址—–服務(wù)端按照“支付結(jié)果通知”，處理支付結(jié)果
app查詢：調(diào)起“查詢訂單”
app退款：發(fā)起退款請求，調(diào)用“申請退款”，發(fā)起退款，需雙向證書驗證
app退款查詢：調(diào)起“查詢退款”
支付代碼實現(xiàn)
代碼實現(xiàn)簽名、證書校驗、http和https封裝等，項目結(jié)構(gòu)如下：
支付代碼
包含支付、支付查詢、異步通知、退款申請、退款查詢
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package org.andy.wxpay.controller;import java.math.bigdecimal;import java.util.hashmap;import java.util.map;import javax.servlet.servletinputstream;import javax.servlet.http.httpservletrequest;import javax.servlet.http.httpservletresponse;import org.andy.wxpay.model.jsonresult;import org.andy.wxpay.model.responsedata;import org.andy.wxpay.utils.collectionutil;import org.andy.wxpay.utils.configutil;import org.andy.wxpay.utils.fileutil;import org.andy.wxpay.utils.httputils;import org.andy.wxpay.utils.payutil;import org.andy.wxpay.utils.serializerfeatureutil;import org.andy.wxpay.utils.stringutil;import org.andy.wxpay.utils.webutil;import org.andy.wxpay.utils.xmlutil;import org.apache.log4j.logger;import org.springframework.stereotype.controller;import org.springframework.web.bind.annotation.requestmapping;import org.springframework.web.bind.annotation.requestmethod;import org.springframework.web.bind.annotation.requestparam;import com.alibaba.fastjson.json;/** * 創(chuàng)建時間：2016年11月2日 下午4:16:32 * * @author andy * @version 2.2 */@controller@requestmapping("/order")public class paycontroller { private static final logger log = logger.getlogger(paycontroller.class); private static final string order_pay = "https://api.mch.weixin.qq.com/pay/unifiedorder"; // 統(tǒng)一下單 private static final string order_pay_query = "https://api.mch.weixin.qq.com/pay/orderquery"; // 支付訂單查詢 private static final string order_refund = "https://api.mch.weixin.qq.com/secapi/pay/refund"; // 申請退款 private static final string order_refund_query = "https://api.mch.weixin.qq.com/pay/refundquery"; // 申請退款 private static final string app_id = configutil.getproperty("wx.appid"); private static final string mch_id = configutil.getproperty("wx.mchid"); private static final string api_secret = configutil.getproperty("wx.api.secret"); /** * 支付下訂單 * * @param request * @param response * @param cashnum * 支付金額 * @param mercid * 商品id * @param callback */ @requestmapping(value = "/pay", method = requestmethod.post) public void orderpay(httpservletrequest request, httpservletresponse response, @requestparam(required = false, defaultvalue = "0") double cashnum, string mercid, string callback) { log.info("[/order/pay]"); if (!"001".equals(mercid)) { webutil.response(response, webutil.packjsonp(callback, json .tojsonstring(new jsonresult(-1, "商品不存在", new responsedata()), serializerfeatureutil.features))); } map<string, string> restmap = null; boolean flag = true; // 是否訂單創(chuàng)建成功 try { string total_fee = bigdecimal.valueof(cashnum).multiply(bigdecimal.valueof(100)) .setscale(0, bigdecimal.round_half_up).tostring(); map<string, string> parm = new hashmap<string, string>(); parm.put("appid", app_id); parm.put("mch_id", mch_id); parm.put("device_info", "web"); parm.put("nonce_str", payutil.getnoncestr()); parm.put("body", "測試付費"); parm.put("attach", "andy"); parm.put("out_trade_no", payutil.gettradeno()); parm.put("total_fee", total_fee); parm.put("spbill_create_ip", payutil.getremoteaddrip(request)); parm.put("notify_url", "https://www.andy.org/wxpay/order/pay/notify.shtml"); parm.put("trade_type", "app"); parm.put("sign", payutil.getsign(parm, api_secret)); string restxml = httputils.post(order_pay, xmlutil.xmlformat(parm, false)); restmap = xmlutil.xmlparse(restxml); } catch (exception e) { log.error(e.getmessage(), e); } map<string, string> paymap = new hashmap<string, string>(); if (collectionutil.isnotempty(restmap) && "success".equals(restmap.get("result_code"))) { paymap.put("appid", app_id); paymap.put("partnerid", mch_id); paymap.put("prepayid", restmap.get("prepay_id")); paymap.put("package", "sign=wxpay"); paymap.put("noncestr", payutil.getnoncestr()); paymap.put("timestamp", payutil.paytimestamp()); try { paymap.put("sign", payutil.getsign(paymap, api_secret)); } catch (exception e) { flag = false; } } if (flag) { webutil.response(response, webutil.packjsonp(callback, json.tojsonstring(new jsonresult(1, "訂單獲取成功", new responsedata(null, paymap)), serializerfeatureutil.features))); } else { if (collectionutil.isnotempty(restmap)) { log.info("訂單創(chuàng)建失敗：" + restmap.get("err_code") + ":" + restmap.get("err_code_des")); } webutil.response(response, webutil.packjsonp(callback, json .tojsonstring(new jsonresult(-1, "訂單獲取失敗", new responsedata()), serializerfeatureutil.features))); } } /** * 查詢支付結(jié)果 * * @param request * @param response * @param tradeid 微信交易訂單號 * @param tradeno 商品訂單號 * @param callback */ @requestmapping(value = "/pay/query", method = requestmethod.post) public void orderpayquery(httpservletrequest request, httpservletresponse response, string tradeid, string tradeno, string callback) { log.info("[/order/pay/query]"); if (stringutil.isempty(tradeno) && stringutil.isempty(tradeid)) { webutil.response(response, webutil.packjsonp(callback, json .tojsonstring(new jsonresult(-1, "訂單號不能為空", new responsedata()), serializerfeatureutil.features))); } map<string, string> restmap = null; try { map<string, string> parm = new hashmap<string, string>(); parm.put("appid", app_id); parm.put("mch_id", mch_id); parm.put("transaction_id", tradeid); parm.put("out_trade_no", tradeno); parm.put("nonce_str", payutil.getnoncestr()); parm.put("sign", payutil.getsign(parm, api_secret)); string restxml = httputils.post(order_pay_query, xmlutil.xmlformat(parm, false)); restmap = xmlutil.xmlparse(restxml); } catch (exception e) { log.error(e.getmessage(), e); } if (collectionutil.isnotempty(restmap) && "success".equals(restmap.get("result_code"))) { // 訂單查詢成功 處理業(yè)務(wù)邏輯 log.info("訂單查詢：訂單" + restmap.get("out_trade_no") + "支付成功"); webutil.response(response, webutil.packjsonp(callback, json .tojsonstring(new jsonresult(1, "訂單支付成功", new responsedata()), serializerfeatureutil.features))); } else { if (collectionutil.isnotempty(restmap)) { log.info("訂單支付失敗：" + restmap.get("err_code") + ":" + restmap.get("err_code_des")); } webutil.response(response, webutil.packjsonp(callback, json .tojsonstring(new jsonresult(-1, "訂單支付失敗", new responsedata()), serializerfeatureutil.features))); } } /** * 訂單支付微信服務(wù)器異步通知 * * @param request * @param response */ @requestmapping("/pay/notify") public void orderpaynotify(httpservletrequest request, httpservletresponse response) { log.info("[/order/pay/notify]"); response.setcharacterencoding("utf-8"); response.setcontenttype("text/xml"); try { servletinputstream in = request.getinputstream(); string resxml = fileutil.readinputstream2string(in); map<string, string> restmap = xmlutil.xmlparse(resxml); log.info("支付結(jié)果通知：" + restmap); if ("success".equals(restmap.get("result_code"))) { // 訂單支付成功 業(yè)務(wù)處理 string out_trade_no = restmap.get("out_trade_no"); // 商戶訂單號 // 通過商戶訂單判斷是否該訂單已經(jīng)處理 如果處理跳過 如果未處理先校驗sign簽名 再進(jìn)行訂單業(yè)務(wù)相關(guān)的處理 string sing = restmap.get("sign"); // 返回的簽名 restmap.remove("sign"); string signnow = payutil.getsign(restmap, api_secret); if (signnow.equals(sing)) { // 進(jìn)行業(yè)務(wù)處理 log.info("訂單支付通知： 支付成功，訂單號" + out_trade_no); // 處理成功后相應(yīng)給響應(yīng)xml map<string, string> respmap = new hashmap<>(); respmap = new hashmap<string, string>(); respmap.put("return_code", "success"); //相應(yīng)給微信服務(wù)器 respmap.put("return_msg", "ok"); string resxml = xmlutil.xmlformat(restmap, true); response.getwriter().write(resxml); } else { log.info("訂單支付通知：簽名錯誤"); } } else { log.info("訂單支付通知：支付失敗，" + restmap.get("err_code") + ":" + restmap.get("err_code_des")); } } catch (exception e) { log.error(e.getmessage(), e); } } /** * 訂單退款 需要雙向證書驗證 * * @param request * @param response * @param tradeno 微信訂單號 * @param orderno 商家訂單號 * @param callback */ @requestmapping(value = "/pay/refund", method = requestmethod.post) public void orderpayrefund(httpservletrequest request, httpservletresponse response, string tradeno, string orderno, string callback) { log.info("[/pay/refund]"); if (stringutil.isempty(tradeno) && stringutil.isempty(orderno)) { webutil.response(response, webutil.packjsonp(callback, json .tojsonstring(new jsonresult(-1, "訂單號不能為空", new responsedata()), serializerfeatureutil.features))); } map<string, string> restmap = null; try { map<string, string> parm = new hashmap<string, string>(); parm.put("appid", app_id); parm.put("mch_id", mch_id); parm.put("nonce_str", payutil.getnoncestr()); parm.put("transaction_id", tradeno); parm.put("out_trade_no", orderno);//訂單號 parm.put("out_refund_no", payutil.getrefundno()); //退款單號 parm.put("total_fee", "10"); // 訂單總金額 從業(yè)務(wù)邏輯獲取 parm.put("refund_fee", "10"); // 退款金額 parm.put("op_user_id", mch_id); parm.put("refund_account", "refund_source_recharge_funds");//退款方式 parm.put("sign", payutil.getsign(parm, api_secret)); //string restxml = httputils.posts(order_refund, xmlutil.xmlformat(parm, false)); string restxml = httputils.posts(order_refund, xmlutil.xmlformat(parm, false)); restmap = xmlutil.xmlparse(restxml); } catch (exception e) { log.error(e.getmessage(), e); } map<string, string> refundmap = new hashmap<>(); if (collectionutil.isnotempty(restmap) && "success".equals(restmap.get("result_code"))) { refundmap.put("transaction_id", restmap.get("transaction_id")); refundmap.put("out_trade_no", restmap.get("out_trade_no")); refundmap.put("refund_id", restmap.get("refund_id")); refundmap.put("out_refund_no", restmap.get("out_refund_no")); log.info("訂單退款：訂單" + restmap.get("out_trade_no") + "退款成功，商戶退款單號" + restmap.get("out_refund_no") + "，微信退款單號" + restmap.get("refund_id")); webutil.response(response, webutil.packjsonp(callback, json.tojsonstring(new jsonresult(1, "訂單獲取成功", new responsedata(null, refundmap)), serializerfeatureutil.features))); } else { if (collectionutil.isnotempty(restmap)) { log.info("訂單退款失敗：" + restmap.get("err_code") + ":" + restmap.get("err_code_des")); } webutil.response(response, webutil.packjsonp(callback, json .tojsonstring(new jsonresult(-1, "訂單退款失敗", new responsedata()), serializerfeatureutil.features))); } } /** * 訂單退款查詢 * @param request * @param response * @param tradeid 微信訂單號 * @param tradeno 商戶訂單號 * @param refundid 微信退款號 * @param refundno 商家退款號 * @param callback */ @requestmapping(value = "/pay/refund/query", method = requestmethod.post) public void orderpayrefundquery(httpservletrequest request, httpservletresponse response, string refundid, string refundno, string tradeid, string tradeno, string callback) { log.info("[/pay/refund/query]"); if (stringutil.isempty(tradeid) && stringutil.isempty(tradeno) && stringutil.isempty(refundno) && stringutil.isempty(refundid)) { webutil.response(response, webutil.packjsonp(callback, json .tojsonstring(new jsonresult(-1, "退單號或訂單號不能為空", new responsedata()), serializerfeatureutil.features))); } map<string, string> restmap = null; try { map<string, string> parm = new hashmap<string, string>(); parm.put("appid", app_id); parm.put("mch_id", mch_id); parm.put("transaction_id", tradeid); parm.put("out_trade_no", tradeno); parm.put("refund_id", refundid); parm.put("out_refund_no", refundno); parm.put("nonce_str", payutil.getnoncestr()); parm.put("sign", payutil.getsign(parm, api_secret)); string restxml = httputils.post(order_refund_query, xmlutil.xmlformat(parm, false)); restmap = xmlutil.xmlparse(restxml); } catch (exception e) { log.error(e.getmessage(), e); } map<string, string> refundmap = new hashmap<>(); if (collectionutil.isnotempty(restmap) && "success".equals(restmap.get("result_code")) && "success".equals(restmap.get("result_code"))) { // 訂單退款查詢成功 處理業(yè)務(wù)邏輯 log.info("退款訂單查詢：訂單" + restmap.get("out_trade_no") + "退款成功，退款狀態(tài)"+ restmap.get("refund_status_0")); refundmap.put("transaction_id", restmap.get("transaction_id")); refundmap.put("out_trade_no", restmap.get("out_trade_no")); refundmap.put("refund_id", restmap.get("refund_id_0")); refundmap.put("refund_no", restmap.get("out_refund_no_0")); refundmap.put("refund_status", restmap.get("refund_status_0")); webutil.response(response, webutil.packjsonp(callback, json .tojsonstring(new jsonresult(1, "訂單退款成功", new responsedata(null, refundmap)), serializerfeatureutil.features))); } else { if (collectionutil.isnotempty(restmap)) { log.info("訂單退款失敗：" + restmap.get("err_code") + ":" + restmap.get("err_code_des")); } webutil.response(response, webutil.packjsonp(callback, json .tojsonstring(new jsonresult(-1, "訂單退款失敗", new responsedata()), serializerfeatureutil.features))); } }} |
微信支付接口參數(shù)含義具體參考微信app支付文檔。
微信支付工具類
包含簽名、訂單號、退單號、隨機串、服務(wù)器ip地址、客戶端ip地址等方法。
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package org.andy.wxpay.utils;import java.io.unsupportedencodingexception;import java.net.urlencoder;import java.util.arrays;import java.util.date;import java.util.map;import java.util.set;import javax.servlet.http.httpservletrequest;/** * 創(chuàng)建時間：2016年11月2日 下午7:12:44 * * @author andy * @version 2.2 */public class payutil { /** * 生成訂單號 * * @return */ public static string gettradeno() { // 自增8位數(shù) 00000001 return "tno" + datetimeutil.formatdate(new date(), datetimeutil.time_stamp_pattern) + "00000001"; } /** * 退款單號 * * @return */ public static string getrefundno() { // 自增8位數(shù) 00000001 return "rno" + datetimeutil.formatdate(new date(), datetimeutil.time_stamp_pattern) + "00000001"; } /** * 退款單號 * * @return */ public static string gettransferno() { // 自增8位數(shù) 00000001 return "tno" + datetimeutil.formatdate(new date(), datetimeutil.time_stamp_pattern) + "00000001"; } /** * 返回客戶端ip * * @param request * @return */ public static string getremoteaddrip(httpservletrequest request) { string ip = request.getheader("x-forwarded-for"); if (stringutil.isnotempty(ip) && !"unknown".equalsignorecase(ip)) { // 多次反向代理后會有多個ip值，第一個ip才是真實ip int index = ip.indexof(","); if (index != -1) { return ip.substring(0, index); } else { return ip; } } ip = request.getheader("x-real-ip"); if (stringutil.isnotempty(ip) && !"unknown".equalsignorecase(ip)) { return ip; } return request.getremoteaddr(); } /** * 獲取服務(wù)器的ip地址 * * @param request * @return */ public static string getlocalip(httpservletrequest request) { return request.getlocaladdr(); } public static string getsign(map<string, string> params, string paternerkey) throws unsupportedencodingexception { return md5utils.getmd5(createsign(params, false) + "&key=" + paternerkey).touppercase(); } /** * 構(gòu)造簽名 * * @param params * @param encode * @return * @throws unsupportedencodingexception */ public static string createsign(map<string, string> params, boolean encode) throws unsupportedencodingexception { set<string> keysset = params.keyset(); object[] keys = keysset.toarray(); arrays.sort(keys); stringbuffer temp = new stringbuffer(); boolean first = true; for (object key : keys) { if (key == null || stringutil.isempty(params.get(key))) // 參數(shù)為空不參與簽名 continue; if (first) { first = false; } else { temp.append("&"); } temp.append(key).append("="); object value = params.get(key); string valuestr = ""; if (null != value) { valuestr = value.tostring(); } if (encode) { temp.append(urlencoder.encode(valuestr, "utf-8")); } else { temp.append(valuestr); } } return temp.tostring(); } /** * 創(chuàng)建支付隨機字符串 * @return */ public static string getnoncestr(){ return randomutil.randomstring(randomutil.letter_number_char, 32); } /** * 支付時間戳 * @return */ public static string paytimestamp() { return long.tostring(system.currenttimemillis() / 1000); }} |
其他所需工具類參考項目源碼
支付結(jié)果
app支付測試完成
源代碼地址：微信app支付
以上就是本文的全部內(nèi)容，希望對大家的學(xué)習(xí)有所幫助，也希望大家多多支持服務(wù)器之家。
原文鏈接：https://blog.csdn.net/fengshizty/article/details/53199356
