我按照https://www.paypal-labs.com/integrationwizard/ecpaypal/main.php在我的应用程序中实现了 paypal 沙箱帐户。我的代码跨越 3 个 jsp 页面，例如 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 如下：
<%
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" );
}
%>
当我点击快速结帐时，它会重定向到https://www.sandbox.paypal.com/webscr?cmd=_express-checkout&token=EC-9CY1483461514290L。但是在“您的订单摘要”中，没有显示当前的购买金额。同样在使用我的买家帐户登录并确认地址和付款后，我的 success.jsp 页面中会显示以下错误消息：
TIMESTAMP:2012-09-18T06:07:32Z CORRELATIONID:b4fe3695b410a ACK:Failure VERSION:84.0 BUILD:3622349 L_ERRORCODE0:10401 L_SHORTMESSAGE0:由于参数无效，交易被拒绝。有关详细信息，请参阅其他错误消息。L_LONGMESSAGE0：订单总数无效。L_SEVERITYCODE0：错误
但是当我打印我的名称值对（nvp）时，它包含金额
NVPSTR===>&Amt=25&PAYMENTACTION=Sale&ReturnUrl=http%3A%2F%2F2.appid.appspot.com%2Fsucess.jsp&CANCELURL=http%3A%2F%2F2.appid.appspot.com%2Fcanceled.jsp&CURRENCYCODE=USD
请解决或提出解决方案。