支付完成后,微信会把相关支付结果和用户信息发送给商户,商户需要接收处理,并返回应答。
对后台通知交互时,如果微信收到商户的应答不是成功或超时,微信认为通知失败,微信会通过一定的策略定期重新发起通知,尽可能提高通知的成功率,但微信不保证通知最终能成功。 (通知频率为15/15/30/180/1800/1800/1800/1800/3600,单位:秒)
注意:同样的通知可能会多次发送给商户系统。商户系统必须能够正确处理重复的通知。
推荐的做法是,当收到通知进行处理时,首先检查对应业务数据的状态,判断该通知是否已经处理过,如果没有处理过再进行处理,如果处理过直接返回结果成功。在对业务数据进行状态检查和处理之前,要采用数据锁进行并发控制,以避免函数重入造成的数据混乱。
特别提醒:商户系统对于支付结果通知的内容一定要做签名验证,防止数据泄漏导致出现“假通知”,造成资金损失。
java" id="highlighter_262719">
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//支付结果通知接口 @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( "支付回调通知:" +xmlstr.tostring()); //检查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( "远程接口完成订单失败" ); result= new weixinnotifyresult( "fail" ); result.setreturn_msg( "远程接口完成订单失败" ); } else { result= new weixinnotifyresult( "success" ); result.setreturn_msg( "成功" ); } } else { result= new weixinnotifyresult( "fail" ); result.setreturn_msg( "失败" ); } } else { result= new weixinnotifyresult( "fail" ); result.setreturn_msg( "解析参数格式失败" ); } } else { result= new weixinnotifyresult( "fail" ); result.setreturn_msg( "签名失败" ); } response.getwriter().write(result.tostring()); } catch (exception e) { logger.getlogger(getclass()).error( "qlydweixinotify.do" , e); responedeal.getinstance().sendresponsestr(response, "404" , "连接超时" ); } finally { if (out != null ) { out.close(); } } } |
模拟http请求工具类:
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 { /** * * @方法名称:sendwxpayrequest * @内容摘要: <发送统一下单请求> * @param body * @param outtradeno * @param totalfee * @param spbillcreateip * @return * string * @exception * @author:鹿伟伟 * @创建日期:2016年2月19日-下午2:24:05 */ public string sendwxpayrequest(string body,string detail,string outtradeno, int totalfee,string spbillcreateip ) { // 构造http请求 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); // 发送请求 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; } /** * * @方法名称:orderqueryrequest * @内容摘要: <查询订单信息> * @param transaction_id 微信的订单号,优先使用 * @return * string * @exception * @author:鹿伟伟 * @创建日期:2016年2月19日-下午2:44:11 */ public string orderqueryrequest(string transactionid, string outtradeno ) { // 构造http请求 httpclient httpclient = new httpclient(); postmethod postmethod = new postmethod(configure.pay_query_api); payqueryreqdata wxdata = new payqueryreqdata(transactionid,outtradeno); string requeststr= "" ; requeststr=util.convertobj2xml(wxdata); // 发送请求 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内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/yelin042/article/details/80636540