GAE / J，PayPal请求 - AuthorizationRequiredException的NoClassDefFoundError
我是Google App Engine（Java）和PayPal流程的新手。我正在使用提供http://googleappengine.blogspot.com/2010/06/paypal-introduces-paypal-x-platform.html的教程，并且不确定为什么我会得到以下异常：
来自servlet的未捕获异常 java.lang.NoClassDefFoundError：com / paypal / adaptive / exceptions / AuthorizationRequiredException
这是我的Servlet类文件，它假定要进行预批准并提供预批准密钥和授权URL。
import java.io.IOException;
import java.util.logging.Logger;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.paypal.adaptive.api.requests.fnapi.ParallelPay;
import com.paypal.adaptive.api.responses.PayResponse;
import com.paypal.adaptive.core.APICredential;
import com.paypal.adaptive.core.AckCode;
import com.paypal.adaptive.core.CurrencyCodes;
import com.paypal.adaptive.core.PaymentType;
import com.paypal.adaptive.core.Receiver;
import com.paypal.adaptive.core.ServiceEnvironment;
import com.paypal.adaptive.exceptions.AuthorizationRequiredException;
import com.paypal.adaptive.exceptions.InvalidAPICredentialsException;
import com.paypal.adaptive.exceptions.InvalidResponseDataException;
import com.paypal.adaptive.exceptions.MissingAPICredentialsException;
import com.paypal.adaptive.exceptions.MissingParameterException;
import com.paypal.adaptive.exceptions.NotEnoughReceivers;
import com.paypal.adaptive.exceptions.PayPalErrorException;
import com.paypal.adaptive.exceptions.PaymentExecException;
import com.paypal.adaptive.exceptions.PaymentInCompleteException;
import com.paypal.adaptive.exceptions.ReceiversCountMismatchException;
import com.paypal.adaptive.exceptions.RequestAlreadyMadeException;
import com.paypal.adaptive.exceptions.RequestFailureException;
@SuppressWarnings("serial")
public class CWEMartServlet extends HttpServlet {
private static final Logger log = Logger.getLogger(CWEMartServlet.class.getName());
private static APICredential credentialObj;
@Override
public void init(ServletConfig config) throws ServletException {
// TODO Auto-generated method stub
super.init(config);
// Get the value of APIUsername
String APIUsername = getServletConfig().getInitParameter("PPAPIUsername");
String APIPassword = getServletConfig().getInitParameter("PPAPIPassword");
String APISignature = getServletConfig().getInitParameter("PPAPISignature");
String AppID = getServletConfig().getInitParameter("PPAppID");
String AccountEmail = getServletConfig().getInitParameter("PPAccountEmail");
if(APIUsername == null || APIUsername.length() <= 0
|| APIPassword == null || APIPassword.length() <=0
|| APISignature == null || APISignature.length() <= 0
|| AppID == null || AppID.length() <=0 ) {
// requires API Credentials not set - throw exception
throw new ServletException("APICredential(s) missing");
}
credentialObj = new APICredential();
credentialObj.setAPIUsername(APIUsername);
credentialObj.setAPIPassword(APIPassword);
credentialObj.setSignature(APISignature);
credentialObj.setAppId(AppID);
credentialObj.setAccountEmail(AccountEmail);
log.info("Servlet initialized successfully");
}
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws IOException {
try {
String id = req.getParameter("id");
String title = req.getParameter("title");
String order = req.getParameter("order");
String returnParam = req.getParameter("return");
String cancel = req.getParameter("cancel");
if(cancel != null && cancel.equals("1")) {
// user canceled the payment
getServletConfig().getServletContext().getRequestDispatcher("/paymentcancel.jsp").forward(req, resp);
} else if(returnParam != null && returnParam.equals("1")){
getServletConfig().getServletContext().getRequestDispatcher("/paymentsuccess.jsp").forward(req, resp);
} else if(order != null && order.length() > 0){
// process order
try {
StringBuilder url = new StringBuilder();
url.append(req.getRequestURL());
String returnURL = url.toString() + "?return=1&payKey=${payKey}&id="+ id + "&title=" + title;
String cancelURL = url.toString() + "?cancel=1&id="+ id + "&title=" + title;
//String ipnURL = url.toString() + "?action=ipn";
ParallelPay parallelPay = new ParallelPay(2);
parallelPay.setCancelUrl(cancelURL);
parallelPay.setReturnUrl(returnURL);
parallelPay.setCredentialObj(credentialObj);
parallelPay.setUserIp(req.getRemoteAddr());
parallelPay.setApplicationName("Sample app on GAE");
parallelPay.setCurrencyCode(CurrencyCodes.USD);
parallelPay.setEnv(ServiceEnvironment.SANDBOX);
//parallelPay.setIpnURL(ipnURL);
parallelPay.setLanguage("en_US");
parallelPay.setMemo(title);
// set the receivers
Receiver primaryReceiver = new Receiver();
primaryReceiver.setAmount(5.0);
primaryReceiver.setEmail("jagdis_1325390370_biz@yahoo.com");
primaryReceiver.setPaymentType(PaymentType.GOODS);
parallelPay.addToReceivers(primaryReceiver);
// set the second receivers
Receiver rec1 = new Receiver();
rec1.setAmount(3.0);
rec1.setEmail("jagdis_1331173124_biz@yahoo.com");
rec1.setPaymentType(PaymentType.GOODS);
parallelPay.addToReceivers(rec1);
PayResponse payResponse = parallelPay.makeRequest();
log.info("Payment success - payKey:" + payResponse.getPayKey());
} catch (IOException e) {
resp.getWriter().println("Payment Failed w/ IOException");
} catch (MissingAPICredentialsException e) {
// No API Credential Object provided - log error
e.printStackTrace();
resp.getWriter().println("No APICredential object provided");
} catch (InvalidAPICredentialsException e) {
// invalid API Credentials provided - application error - log error
e.printStackTrace();
resp.getWriter().println("Invalid API Credentials " + e.getMissingCredentials());
} catch (MissingParameterException e) {
// missing parameter - log error
e.printStackTrace();
resp.getWriter().println("Missing Parameter error: " + e.getParameterName());
} catch(ReceiversCountMismatchException e){
// missing receiver - log error
e.printStackTrace();
resp.getWriter().println("Receiver count did not match - expected: "
+ e.getExpectedNumberOfReceivers()
+ " - actual:" + e.getActualNumberOfReceivers());
} catch (RequestFailureException e) {
// HTTP Error - some connection issues ?
e.printStackTrace();
resp.getWriter().println("Request HTTP Error: " + e.getHTTP_RESPONSE_CODE());
} catch (InvalidResponseDataException e) {
// PayPal service error
// log error
e.printStackTrace();
resp.getWriter().println("Invalid Response Data from PayPal: \"" + e.getResponseData() + "\"");
} catch (PayPalErrorException e) {
// Request failed due to a Service/Application error
e.printStackTrace();
if(e.getResponseEnvelope().getAck() == AckCode.Failure){
// log the error
resp.getWriter().println("Received Failure from PayPal (ack)");
resp.getWriter().println("ErrorData provided:");
resp.getWriter().println(e.getPayErrorList().toString());
if(e.getPaymentExecStatus() != null){
resp.getWriter().println("PaymentExecStatus: " + e.getPaymentExecStatus());
}
} else if(e.getResponseEnvelope().getAck() == AckCode.FailureWithWarning){
// there is a warning - log it!
resp.getWriter().println("Received Failure with Warning from PayPal (ack)");
resp.getWriter().println("ErrorData provided:");
resp.getWriter().println(e.getPayErrorList().toString());
}
} catch (RequestAlreadyMadeException e) {
// shouldn't occur - log the error
e.printStackTrace();
resp.getWriter().println("Request to send a request that has already been sent!");
} catch (PaymentExecException e) {
resp.getWriter().println("Failed Payment Request w/ PaymentExecStatus: " + e.getPaymentExecStatus().toString());
resp.getWriter().println("ErrorData provided:");
resp.getWriter().println(e.getPayErrorList().toString());
}catch (PaymentInCompleteException e){
resp.getWriter().println("Incomplete Payment w/ PaymentExecStatus: " + e.getPaymentExecStatus().toString());
resp.getWriter().println("ErrorData provided:");
resp.getWriter().println(e.getPayErrorList().toString());
} catch (NumberFormatException e) {
// invalid number passed
e.printStackTrace();
resp.getWriter().println("Invalid number of receivers sent");
} catch (NotEnoughReceivers e) {
// not enough receivers - min requirements for Parallel pay not met
e.printStackTrace();
resp.getWriter().println("Min number of receivers not met - Min Required:"
+ e.getMinimumRequired() + " - actual set:" + e.getActualNumber());
} catch (AuthorizationRequiredException e) {
// redirect the user to PayPal for Authorization
resp.getWriter().println("\"PPAuthzUrl\": \"" + e.getAuthorizationUrl(ServiceEnvironment.SANDBOX) + "\", \"Status\": \"CREATED\"");
// resp.sendRedirect(e.getAuthorizationUrl(ServiceEnvironment.SANDBOX));
// resp.getWriter().println("\"PPAuthzUrl\": \"" + e.getEmbeddedPaymentsAuthorizationUrl(ServiceEnvironment.SANDBOX, ExpType.LIGHTBOX) + "\", \"Status\": \"CREATED\"");
}
} else if(id == null || id.length() <= 0) {
getServletConfig().getServletContext().getRequestDispatcher("/index.jsp").forward(req, resp);
} else {
getServletConfig().getServletContext().getRequestDispatcher("/order.jsp").forward(req, resp);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
1 个答案:
答案 0 :(得分：1)
检查lib目录中是否有paypal.jar。如果您不确定，请解压与paypal相关的lib文件，并检查其中至少有一个是 AuthorizationRequiredException.class 。
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