支付完成后，微信會(huì)把相關(guān)支付結(jié)果和用戶信息發(fā)送給商戶，商戶需要接收處理，并返回應(yīng)答。
對(duì)后臺(tái)通知交互時(shí)，如果微信收到商戶的應(yīng)答不是成功或超時(shí)，微信認(rèn)為通知失敗，微信會(huì)通過(guò)一定的策略定期重新發(fā)起通知，盡可能提高通知的成功率，但微信不保證通知最終能成功。 （通知頻率為15/15/30/180/1800/1800/1800/1800/3600，單位：秒）
注意：同樣的通知可能會(huì)多次發(fā)送給商戶系統(tǒng)。商戶系統(tǒng)必須能夠正確處理重復(fù)的通知。
推薦的做法是，當(dāng)收到通知進(jìn)行處理時(shí)，首先檢查對(duì)應(yīng)業(yè)務(wù)數(shù)據(jù)的狀態(tài)，判斷該通知是否已經(jīng)處理過(guò)，如果沒(méi)有處理過(guò)再進(jìn)行處理，如果處理過(guò)直接返回結(jié)果成功。在對(duì)業(yè)務(wù)數(shù)據(jù)進(jìn)行狀態(tài)檢查和處理之前，要采用數(shù)據(jù)鎖進(jìn)行并發(fā)控制，以避免函數(shù)重入造成的數(shù)據(jù)混亂。
特別提醒：商戶系統(tǒng)對(duì)于支付結(jié)果通知的內(nèi)容一定要做簽名驗(yàn)證，防止數(shù)據(jù)泄漏導(dǎo)致出現(xiàn)“假通知”，造成資金損失。
java" id="highlighter_262719">
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//支付結(jié)果通知接口 @requestmapping("/qlydweixinotify.do") public void weixinotify(httpservletrequest request, httpservletresponse response) { printwriter out = null; stringbuffer xmlstr = new stringbuffer(); try { bufferedreader reader = request.getreader(); string line = null; while ((line = reader.readline()) != null) { xmlstr.append(line); } logger.getlogger(getclass()).debug("支付回調(diào)通知："+xmlstr.tostring()); //檢查xml是否有效 boolean flag=signature.checkissignvalidfromresponsestring(xmlstr.tostring()); weixinnotifyresult result=null; if(flag){ notifyresdata wxdata=(notifyresdata) util.getobjectfromxml(xmlstr.tostring(),notifyresdata.class); if(wxdata !=null){ if("success".equals(wxdata.getreturn_code())&&"success".equals(wxdata.getresult_code())){ orderpayinfo orderpayinfo = new orderpayinfo(); orderpayinfo.setordernum(wxdata.getout_trade_no()); orderpayinfo.setpaynum(wxdata.gettransaction_id()); orderpayinfo.setpayprice((double)wxdata.gettotal_fee()/100+""); orderpayinfo.setpaysource(wxdata.getopenid()); orderpayinfo.setpaytime(wxdata.gettime_end()); ordermessage returnmessage = orderproductserver .completeproductorder(orderpayinfo); if (orderstatus.fail.equals(returnmessage .getorderstatus())) { logger.getlogger(getclass()).error("遠(yuǎn)程接口完成訂單失敗"); result=new weixinnotifyresult("fail"); result.setreturn_msg("遠(yuǎn)程接口完成訂單失敗"); } else { result=new weixinnotifyresult("success"); result.setreturn_msg("成功"); } }else{ result=new weixinnotifyresult("fail"); result.setreturn_msg("失敗"); } }else{ result=new weixinnotifyresult("fail"); result.setreturn_msg("解析參數(shù)格式失敗"); } }else{ result=new weixinnotifyresult("fail"); result.setreturn_msg("簽名失敗"); } response.getwriter().write(result.tostring()); } catch (exception e) { logger.getlogger(getclass()).error("qlydweixinotify.do", e); responedeal.getinstance().sendresponsestr(response, "404", "連接超時(shí)"); } finally { if (out != null) { out.close(); } } } |
模擬http請(qǐng)求工具類：
httpsrequestutil.java
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package com.qlwb.weixin.util; import java.io.ioexception; import org.apache.commons.httpclient.httpclient;import org.apache.commons.httpclient.httpexception;import org.apache.commons.httpclient.methods.postmethod;import org.apache.commons.httpclient.methods.requestentity;import org.apache.commons.httpclient.methods.stringrequestentity;import org.apache.log4j.logger; import com.qlwb.weixin.common.configure;import com.qlwb.weixin.common.util;import com.qlwb.weixin.protocol.pay_protocol.wxpayreqdata;import com.qlwb.weixin.protocol.payquery_protocol.payqueryreqdata; public class httpsrequestutil { /** * * @方法名稱:sendwxpayrequest * @內(nèi)容摘要: ＜發(fā)送統(tǒng)一下單請(qǐng)求＞ * @param body * @param outtradeno * @param totalfee * @param spbillcreateip * @return * string * @exception * @author:鹿偉偉 * @創(chuàng)建日期:2016年2月19日-下午2:24:05 */ public string sendwxpayrequest(string body,string detail,string outtradeno,int totalfee,string spbillcreateip ) { // 構(gòu)造http請(qǐng)求 httpclient httpclient = new httpclient(); postmethod postmethod = new postmethod(configure.pay_api); wxpayreqdata wxdata = new wxpayreqdata(body,detail,outtradeno,totalfee,spbillcreateip); string requeststr=""; requeststr=util.convertobj2xml(wxdata); // 發(fā)送請(qǐng)求 string strresponse = null; try { requestentity entity = new stringrequestentity( requeststr.tostring(), "text/xml", "utf-8"); postmethod.setrequestentity(entity); httpclient.executemethod(postmethod); strresponse = new string(postmethod.getresponsebody(), "utf-8"); logger.getlogger(getclass()).debug(strresponse); } catch (httpexception e) { logger.getlogger(getclass()).error("sendwxpayrequest", e); } catch (ioexception e) { logger.getlogger(getclass()).error("sendwxpayrequest", e); } finally { postmethod.releaseconnection(); } return strresponse; } /** * * @方法名稱:orderqueryrequest * @內(nèi)容摘要: ＜查詢訂單信息＞ * @param transaction_id 微信的訂單號(hào)，優(yōu)先使用 * @return * string * @exception * @author:鹿偉偉 * @創(chuàng)建日期:2016年2月19日-下午2:44:11 */ public string orderqueryrequest(string transactionid, string outtradeno ) { // 構(gòu)造http請(qǐng)求 httpclient httpclient = new httpclient(); postmethod postmethod = new postmethod(configure.pay_query_api); payqueryreqdata wxdata = new payqueryreqdata(transactionid,outtradeno); string requeststr=""; requeststr=util.convertobj2xml(wxdata); // 發(fā)送請(qǐng)求 string strresponse = null; try { requestentity entity = new stringrequestentity( requeststr.tostring(), "text/xml", "utf-8"); postmethod.setrequestentity(entity); httpclient.executemethod(postmethod); strresponse = new string(postmethod.getresponsebody(), "utf-8"); } catch (httpexception e) { logger.getlogger(getclass()).error("orderqueryrequest", e); } catch (ioexception e) { logger.getlogger(getclass()).error("orderqueryrequest", e); } finally { postmethod.releaseconnection(); } return strresponse; }} |
以上就是本文的全部?jī)?nèi)容，希望對(duì)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/yelin042/article/details/80636540
