1.给数据库添加一个字段，存放该订单的支付总额。2.添加对只使用卡券情况的处理逻辑 3.在支付失败的情况下，对已核销的卡券进行冲正，并从核销表中删除该券的核销记录。

fmp_epay_p.cpp

@@ -70,6 +70,7 @@ FMPePayPrivate::FMPePayPrivate(FMPePay *parent)
                       "statusCode integer,"
                       "operator_id varchar(40),"
                       "addtime TIMESTAMP default (datetime('now', 'localtime')),"
+                      "pay_total integer,"
                       "PRIMARY KEY (trans_id)"
                       ")";
         FMP_INFO() << " creat table sql:" << sql;
@@ -420,6 +421,8 @@ void FMPePayPrivate::ControlPayJson(QString sum, QString code)
             outjson.insert(SQL_KEY_TRANSID, _docked_request[SQL_KEY_TRANSID].toString());
 
             _origin_response = outjson;
+            _origin_response["pay_total"] = _payDialog->_pay_total + _origin_response["total_amount"].toInt();
+
             FMP_INFO() << "result json : " << outjson;
             writeOrderToSqlite();
 //            if (_is_api) {
@@ -729,8 +732,9 @@ bool FMPePayPrivate::GetPayJson(const QString& sum, const QString& code)
 
     transaction.insert(FMP_EPAY_TRANSTRACTION_CODE,  code);
     if (_is_api) {
-        QJsonObject origin_trans = _origin_request["transactions"].toObject();
-        transaction[FMP_EPAY_TRANSTRACTION_AMOUNT] = origin_trans["order_amount"];
+        //QJsonObject origin_trans = _origin_request["transactions"].toObject();
+        //transaction[FMP_EPAY_TRANSTRACTION_AMOUNT] = origin_trans["order_amount"];
+        transaction[FMP_EPAY_TRANSTRACTION_AMOUNT] = (int)(sum.toDouble() * 100);
         QJsonArray pos_products = _origin_request["products"].toArray();
         QJsonArray products;
         int i = 1;
@@ -850,6 +854,12 @@ void FMPePayPrivate::ClosePayWindow(int type)
     writeOrderToSqlite();
 }
 
+void FMPePayPrivate::writeOrderToSqlite(const QJsonObject &response)
+{
+    _origin_response = response;
+    writeOrderToSqlite();
+}
+
 void FMPePayPrivate::writeOrderToSqlite()
 {
     Q_Q(FMPePay);
@@ -900,6 +910,9 @@ void FMPePayPrivate::writeOrderToSqlite()
             _db->update(q->_table, _dbWrite.toVariantHash(),QString("trans_id = '%1'").arg(_dbWrite[SQL_KEY_TRANSID].toString()));
     }
     else{  
+        //支付失败，将pay_total置为order_amount
+        _dbWrite["pay_total"] = 0;
+        
         if(!_db->isRecordExist(q->_table,_pos_trans_id)){
             QJsonObject origin_trans = _origin_request["transactions"].toObject();
             _dbWrite["total_amount"]=origin_trans["order_amount"];
@@ -911,6 +924,13 @@ void FMPePayPrivate::writeOrderToSqlite()
         else{     
             _db->update(q->_table, _dbWrite.toVariantHash(),QString("trans_id = '%1'").arg(_dbWrite[FMP_EPAY_TRANSID].toString()));
         }
+        
+        //并重置pay_total变量
+        //并对已核销的卡券进行冲正
+        _payDialog->_pay_total = 0;
+        if(_dbWrite[FMP_RPAY_PAY_RETURN_STATUSCODE].toInt() != ERROR_ORDER_STATUS){
+            _payDialog->Reverse();
+        }
     }
 
     FMP_INFO() << "writeOrderToSqlite json : " << _dbWrite;

fmp_epay_p.h

@@ -62,6 +62,8 @@ public:
 
     void                writeOrderToSqlite();
     
+    void                writeOrderToSqlite(const QJsonObject& response);
+
     void                updateSqlite(const QJsonObject &json);
 
     void                setPosTransId(QString orderId);
@@ -113,6 +115,7 @@ public:
     FMPNetworkInterface *_network;
     bool                _is_api;
     CQueryThread        *_queryThread;
+    QString             _pos_trans_id;
 private:
     bool                _reverse_flag;
 
@@ -127,8 +130,6 @@ private:
     QJsonObject         _docked_request;
     QJsonObject         _origin_response;
     QJsonObject         _docked_response;
-
-    QString             _pos_trans_id;
 };
 
 #endif // FMP_EPAY_P_H

fmp_epayview_dialog.cpp

@@ -26,9 +26,11 @@
 #include <QSqlRecord>
 #include <QTableWidget>
 #include <QSqlQuery>
+#include <QMessageBox>
 
 FMPPayDialog::FMPPayDialog(FMPePayPrivate *control, QVariantHash basicinfo, QWidget *parent) :
     _control(control),
+    _pay_total(0),
     QDialog(parent),
     ui(new Ui::FMPPayDialog)
 {
@@ -195,7 +197,7 @@ FMPPayDialog::FMPPayDialog(FMPePayPrivate *control, QVariantHash basicinfo, QWid
     _products_info = basicinfo["products"].toJsonArray();
     ui->tableView_hasPay->setToolTip(QString::fromLocal8Bit("双击查看支付详情"));
     connect(ui->tableView_hasPay, &QTableView::doubleClicked, this, &FMPPayDialog::ShowPayDetail);
-
+    _should_pay = basicinfo["amount"].toInt();
     setShowFunc();
 }
 
@@ -854,21 +856,48 @@ void FMPPayDialog::PlayAnimation(QWidget *target0, QWidget *target1, Movemode mo
 //确定按钮
 void FMPPayDialog::onBtnConfirmClicked()
 {
-    if(ui->lineedit_num->text().toDouble() <= 0.0)
-    {
-        _api_force_close=true;
-        _control->ClosePayWindow(DIALOG_FORCE_CLOSE);
-        this->close();
-        _control->Uninit();
-        return;
-    }
-    
     if(_wait == NULL)
     {
         _wait = new FMPPayWait(this);
         _wait->setModal(true);
     }
     
+    if(ui->lineedit_num->text().toDouble() <= 0.0 && _pay_total > 0 && ui->lineedit_code->text().isEmpty())
+    {
+        QJsonObject fakeResponse;
+        fakeResponse["statusCode"] = 100;
+        fakeResponse["pay_acount"] = "";
+        fakeResponse["pay_ebcode"] = "";
+        fakeResponse["pay_id"] = QString::fromLocal8Bit("非码卡券支付");
+        fakeResponse["pay_transId"] = "";
+        fakeResponse["fmId"] = "";
+        fakeResponse["total_amount"] = _should_pay;
+        fakeResponse["alipay_amount"] = 0;
+        fakeResponse["mcoupon_amount"] = 0;
+        fakeResponse["invoice_amount"] = _pay_total;
+        fakeResponse["pay_total"] = _pay_total;
+        fakeResponse["isrefund"] = false;
+        QJsonObject ext;
+        QString desc = QString::fromLocal8Bit("\r\n卡券支付明细\r\n");
+        desc.append("----------------------------------------\r\n");
+        foreach (QString item, couponDes) {
+            desc.append(item);
+            desc.append("\r\n");
+        }
+        desc.append(QString::fromLocal8Bit("商户交易号:").append(_control->_pos_trans_id).append("\r\n"));
+        desc.append("----------------------------------------");
+        ext["print"] = desc;
+        fakeResponse["ext"] = ext;
+        qDebug() << fakeResponse;
+        _control->writeOrderToSqlite(fakeResponse);
+        _control->finished(fakeResponse);
+//        _api_force_close=true;
+//        _control->ClosePayWindow(DIALOG_FORCE_CLOSE);
+//        this->close();
+//        _control->Uninit();
+        return;
+    }
+
     if((ui->lineedit_num->text() == "" && ui->lineedit_num_refund->text() == "") ||
        (ui->lineedit_num->text().toDouble() < 0.01  && ui->lineedit_num_refund->text().toDouble() < 0.01)||
        (ui->lineedit_code->text() == "" && ui->lineedit_code_refund->text() == "") ||
@@ -890,7 +919,6 @@ void FMPPayDialog::onBtnConfirmClicked()
     {
         _wait->SetContent(FMPPayWait::LOADING, QString::fromLocal8Bit("支付中..."));
         _control->ControlPayJson(ui->lineedit_num->text(), ui->lineedit_code->text());
-
     }
     else
     {
@@ -1096,7 +1124,7 @@ void FMPPayDialog::setShowFunc()
     }
     else{
         ui->btn_pay->setVisible(false);
-        ui->btn_check->setVisible(false);
+        ui->btn_check->setVisible(true);
         ui->btn_refund->setVisible(false);
         ui->btn_waitPay->setVisible(true);
         ui->btn_errorOrder->setVisible(true);
@@ -1121,6 +1149,26 @@ void FMPPayDialog::redeem()
     double needPay = ui->lineedit_num->text().toDouble();
     FMPRedeemInterface* redeem = FMP::GetService<FMPRedeemInterface>();
     redeem->StartService();
+    
+//    QJsonObject request;
+//    request["business_date"] = "20170825";
+//    request["clientReqCount"] = 2;
+//    request["operator_id"] = "001";
+//    request["partnerId"] = 1371;
+//    request["reqtype"] = 71;
+//    request["station_id"] = "01";
+//    request["store_id"] = "fm99999";
+//    request["trans_id"] = "1503649216";
+//    QJsonArray transactions;
+//    QJsonObject transaction;
+//    transaction["code"] = "779335294";
+//    transaction["ebcode"] = "0000000252";
+//    transactions.append(transaction);
+//    request["transactions"] = transactions;
+//    request["ver"] = 2;
+//    redeem->Reverse(request);
+//    return;
+            
     QJsonObject result = redeem->Redeem(needPay, _products_info);
     FMP_DEBUG() << "redeem result: " << result;
     needPay -= result["discount"].toInt()/100.0;
@@ -1128,6 +1176,15 @@ void FMPPayDialog::redeem()
     
     if(result["statusCode"].toInt() == 100)
     {
+        //增加该笔订单的总支付额
+        _pay_total += result["discount"].toInt();
+        
+        //记录该张券的支付描述
+        couponDes.append(QString::fromLocal8Bit("%1:%2元").arg(result["couponType"].toString()).arg(result["discount"].toInt()/100.0));
+        
+        //保存该卡券的核销参数，以便后续冲正
+        reverses.push_back(redeem->GetRedeemJson());
+        
         //记录核销详情
         QJsonObject redeemInfo;
         redeemInfo["pay_id"] = result["couponType"].toString();
@@ -1171,3 +1228,22 @@ void FMPPayDialog::ShowPayDetail(const QModelIndex &index)
     }
     detailDlg.exec();
 }
+
+void FMPPayDialog::Reverse()
+{
+    FMPRedeemInterface* redeem = FMP::GetService<FMPRedeemInterface>();
+    redeem->StartService();
+    foreach (QJsonObject obj, reverses) {
+        QJsonObject result = redeem->Reverse(obj);
+        if(result["statusCode"].toInt() == 100)
+        {
+            //如果冲正成功，则从数据库中删除该券的核销记录
+            QString coupon = obj["transactions"].toArray()[0].toObject()["code"].toString();
+            FMPDataBase* database =  _control->GetDB();
+            if(!database->dlt(DEFAULT_REDEEM_TABLE, "code="+coupon))
+            {
+                FMP_ERROR() << "delete from redeem_table failed. code=" << coupon;
+            }
+        }
+    }
+}

fmp_epayview_dialog.h

@@ -8,6 +8,7 @@
 #include <QModelIndex>
 #include <QDateTime>
 #include <QTimer>
+#include <QVector>
 
 #include <QDialog>
 #include <QLineEdit>
@@ -109,6 +110,8 @@ public:
 
     void setShowFunc();
 
+    void Reverse();
+    
 private:
 
     void setCheckView();
@@ -133,6 +136,10 @@ private:
     void setDoneView();
     void setDailyBillView();
     
+public:
+    int _pay_total; //一笔订单的支付总额，包括 扫码支付额、卡券支付额......
+    QStringList couponDes;
+    
 private:
     Ui::FMPPayDialog *ui;
 
@@ -153,6 +160,8 @@ private:
     bool _api_force_close;
     QPoint      _mMovePosition;
     QJsonArray  _products_info;
+    QVector<QJsonObject> reverses; //存放卡券冲正的请求数据
+    int _should_pay; //支付请求的应付金额，即amount
 };
 
 #endif // DIALOG_H