I executed https://www.paypal-labs.com/integrationwizard/ecpaypal/main.php to implement the sandbox account in my program. My code spreads over 3 jsp pages such as index.jsp → expresscheckout.jsp → paypalfunctions.jsp.
expresscheckout.jsp
<%@ include file="paypalfunctions.jsp"%> <% String paymentAmount = "25"; String currencyCodeType = "USD"; String paymentType = "Sale"; String returnURL = "http://2.appid.appspot.com/sucess.jsp"; String cancelURL = "http://2.appid.appspot.com/canceled.jsp"; HashMap nvp = CallShortcutExpressCheckout(paymentAmount, currencyCodeType, paymentType, returnURL, cancelURL, session); String strAck = nvp.get("ACK").toString(); if (strAck != null && strAck.equalsIgnoreCase("Success")) { //' Redirect to paypal.com RedirectURL(nvp.get("TOKEN").toString(), response); } else { String ErrorCode = nvp.get("L_ERRORCODE0").toString(); String ErrorShortMsg = nvp.get("L_SHORTMESSAGE0").toString(); String ErrorLongMsg = nvp.get("L_LONGMESSAGE0").toString(); String ErrorSeverityCode = nvp.get("L_SEVERITYCODE0") .toString(); } %>
paypalfunctions.jsp follows:
<% gv_APIUserName = "myid_78955666_biz_api1.gmail.com"; gv_APIPassword = "1347856389"; gv_APISignature = "AFcWxV21C7fd0v3bYYYRCpSSRl31AuP4KrN6UABOJ1fGdNRYoIpc.qjr"; //BN Code is only applicable for partners gv_BNCode = "PP-ECWizard"; boolean bSandbox = true; if (bSandbox == true) { gv_APIEndpoint = "https://api-3t.sandbox.paypal.com/nvp"; PAYPAL_URL = "https://www.sandbox.paypal.com/webscr?cmd=_express-checkout&token="; } else { gv_APIEndpoint = "https://api-3t.paypal.com/nvp"; PAYPAL_URL = "https://www.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token="; } String HTTPREQUEST_PROXYSETTING_SERVER = ""; String HTTPREQUEST_PROXYSETTING_PORT = ""; boolean USE_PROXY = false; gv_Version = "2.3"; //WinObjHttp Request proxy settings. gv_ProxyServer = HTTPREQUEST_PROXYSETTING_SERVER; gv_ProxyServerPort = HTTPREQUEST_PROXYSETTING_PORT; gv_Proxy = 2; //'setting for proxy activation gv_UseProxy = USE_PROXY; %> <%! String gv_APIEndpoint; String gv_APIUserName; String gv_APIPassword; String gv_APISignature; String gv_BNCode; String gv_Version; String gv_nvpHeader; String gv_ProxyServer; String gv_ProxyServerPort; int gv_Proxy; boolean gv_UseProxy; String PAYPAL_URL; public HashMap CallShortcutExpressCheckout( String paymentAmount, String currencyCodeType, String paymentType, String returnURL, String cancelURL, HttpSession session) { session.setAttribute("paymentType", paymentType); session.setAttribute("currencyCodeType", currencyCodeType); ored in $nvpstr */ String nvpstr = "&Amt=25&PAYMENTACTION=" + paymentType + "&ReturnUrl=" + URLEncoder.encode( returnURL ) + "&CANCELURL=" + URLEncoder.encode( cancelURL ) + "&CURRENCYCODE=" + currencyCodeType; /* Make the call to PayPal to get the Express Checkout token If the API call succeded, then redirect the buyer to PayPal to begin to authorize payment. If an error occured, show the resulting errors */ HashMap nvp = httpcall("SetExpressCheckout", nvpstr); String strAck = nvp.get("ACK").toString(); session.setAttribute("nvpstr", nvpstr); session.setAttribute("strAck", strAck); if(strAck !=null && strAck.equalsIgnoreCase("Success")) { session.setAttribute("TOKEN", nvp.get("TOKEN").toString()); } return nvp; } public HashMap CallMarkExpressCheckout( String paymentAmount, String currencyCodeType, String paymentType, String returnURL, String cancelURL, String shipToName, String shipToStreet, String shipToCity, String shipToState, String shipToCountryCode, String shipToZip, String shipToStreet2, String phoneNum, HttpSession session) { session.setAttribute("paymentType", paymentType); session.setAttribute("currencyCodeType", currencyCodeType); String nvpStr = "ADDROVERRIDE=1&Amt=" + paymentAmount + "&PAYMENTACTION=" + paymentType; nvpStr = nvpStr + "&CURRENCYCODE=" + currencyCodeType + "&ReturnUrl=" + URLEncoder.encode( returnURL ) + "&CANCELURL=" + URLEncoder.encode( cancelURL ); nvpStr = nvpStr + "&SHIPTONAME=" + shipToName + "&SHIPTOSTREET=" + shipToStreet + "&SHIPTOSTREET2=" + shipToStreet2; nvpStr = nvpStr + "&SHIPTOCITY=" + shipToCity + "&SHIPTOSTATE=" + shipToState + "&SHIPTOCOUNTRYCODE=" + shipToCountryCode; nvpStr = nvpStr + "&SHIPTOZIP=" + shipToZip + "&PHONENUM" + phoneNum; HashMap nvp = httpcall("SetExpressCheckout", nvpStr);//made a change from original code String strAck = nvp.get("ACK").toString(); if(strAck !=null && (strAck.equalsIgnoreCase("Success") || strAck.equalsIgnoreCase("SuccessWithWarning"))) { session.setAttribute("TOKEN", nvp.get("TOKEN").toString()); } return nvp; } public HashMap GetShippingDetails( String token, HttpSession session) { String nvpstr= "&TOKEN=" + token; HashMap nvp = httpcall("GetExpressCheckoutDetails", nvpstr); String strAck = nvp.get("ACK").toString(); if(strAck !=null && (strAck.equalsIgnoreCase("Success") || strAck.equalsIgnoreCase("SuccessWithWarning"))) { session.setAttribute("PAYERID", nvp.get("PAYERID").toString()); } return nvp; } public HashMap ConfirmPayment( String finalPaymentAmount, HttpSession session, HttpServletRequest request) { String token = session.getAttribute("TOKEN").toString(); String currencyCodeType = session.getAttribute("currencyCodeType").toString(); String paymentType = session.getAttribute("paymentType").toString(); String payerID = session.getAttribute("PAYERID").toString(); String serverName = request.getServerName(); String nvpstr = "&TOKEN=" + token + "&PAYERID=" + payerID + "&PAYMENTACTION=" + paymentType + "&AMT=" + finalPaymentAmount; nvpstr = nvpstr + "&CURRENCYCODE=" + currencyCodeType + "&IPADDRESS=" + serverName; HashMap nvp = httpcall("DoExpressCheckoutPayment", nvpstr); return nvp; } HashMap DirectPayment ( String paymentType, String paymentAmount, String creditCardType, String creditCardNumber, String expDate, String cvv2, String firstName, String lastName, String street, String city, String state, String zip, String countryCode, String currencyCode, String IPAddress) { String nvpStr = "Amt=" + paymentAmount + "&PAYMENTACTION=" + paymentType; nvpStr += "&IPADDRESS=" + IPAddress; nvpStr += "&CREDITCARDTYPE=" + creditCardType + "&ACCT=" + creditCardNumber + "&EXPDATE=" + expDate + "&CVV2=" + cvv2; nvpStr += "&FIRSTNAME=" + firstName + "&LASTNAME=" + lastName + "&STREET=" + street + "&CITY=" + city + "&STATE=" + state + "&COUNTRYCODE=" + countryCode + "&ZIP=" + zip; nvpStr += "&CURRENCYCODE=" + currencyCode; return httpcall("DoDirectPayment", nvpStr); } public HashMap httpcall( String methodName, String nvpStr) { String version = "2.3"; String agent = "Mozilla/4.0"; String respText = ""; HashMap nvp=null; String encodedData = "METHOD=" + methodName + "&VERSION=" + gv_Version + "&PWD=" + gv_APIPassword + "&USER=" + gv_APIUserName + "&SIGNATURE=" + gv_APISignature + nvpStr + "&BUTTONSOURCE=" + gv_BNCode; try { URL postURL = new URL( gv_APIEndpoint ); HttpURLConnection conn = (HttpURLConnection)postURL.openConnection(); // Set connection parameters. We need to perform input and output, // so set both as true. conn.setDoInput (true); conn.setDoOutput (true); // Set the content type we are POSTing. We impersonate it as // encoded form data conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); conn.setRequestProperty( "User-Agent", agent ); //conn.setRequestProperty( "Content-Type", type ); conn.setRequestProperty( "Content-Length", String.valueOf( encodedData.length()) ); conn.setRequestMethod("POST"); // get the output stream to POST to. DataOutputStream output = new DataOutputStream( conn.getOutputStream()); output.writeBytes( encodedData ); output.flush(); output.close (); // Read input from the input stream. DataInputStream in = new DataInputStream (conn.getInputStream()); int rc = conn.getResponseCode(); if ( rc != -1) { BufferedReader is = new BufferedReader(new InputStreamReader( conn.getInputStream())); String _line = null; while(((_line = is.readLine()) !=null)) { respText = respText + _line; } nvp = deformatNVP( respText ); } return nvp; } catch( IOException e ) { // handle the error here return null; } } public HashMap deformatNVP( String pPayload ) { HashMap nvp = new HashMap(); StringTokenizer stTok = new StringTokenizer( pPayload, "&"); while (stTok.hasMoreTokens()) { StringTokenizer stInternalTokenizer = new StringTokenizer( stTok.nextToken(), "="); if (stInternalTokenizer.countTokens() == 2) { String key = URLDecoder.decode( stInternalTokenizer.nextToken()); String value = URLDecoder.decode( stInternalTokenizer.nextToken()); nvp.put( key.toUpperCase(), value ); } } return nvp; } public void RedirectURL( String token, HttpServletResponse response ) { String payPalURL = PAYPAL_URL + token; //response.sendRedirect( payPalURL ); response.setStatus(302); response.setHeader( "Location", payPalURL ); response.setHeader( "Connection", "close" ); }
%>
When I click the express check, it is redirected to https://www.sandbox.paypal.com/webscr?cmd=_express-checkout&token=EC-9CY1483461514290L . But the "Summary of your order" does not display the current purchase amount. Also, after logging in with my customer account and confirming the address and payment, the following error messages are displayed on my success.jsp page:
TIMESTAMP: 2012-09-18T06: 07: 32Z CorrelationId: b4fe3695b410a ACK: Failure VERSION: 84.0 BUILD: 3622349 L_ERRORCODE0: 10401 L_SHORTMESSAGE0: The transaction failed due to an invalid argument. See the additional error messages for more information. L_LONGMESSAGE0: The order amount is not valid. L_SEVERITYCODE0: Error
But when I printed my name-value pair (nvp), it contains the sum
NVPSTR ===> & Amt = 25 & PAYMENTACTION = Sell & ReturnUrl = HTTP% 3A% 2F% 2F2.appid.appspot.com% 2Fsucess.jsp & CANCELURL = HTTP% 3A% 2F% 2F2.appid.appspot.com% 2Fcanceled.jsp & CURRENCYCODE = USD
Please decide or propose a solution.