使用 paypal api 时无法建立 SOAP 连接

【问题标题】：Unable to establish SOAP connection while using paypal api使用 paypal api 时无法建立 SOAP 连接
【发布时间】：2014-02-12 15:34:09
【问题描述】：

我正在尝试使用 paypal soap 客户端，并使用 Paypal Express Checkout with Java 参考执行 setExpressCheckout 方法。

所以这里我只使用了 paypal-base.jar 和 paypal-stubs.jar 肥皂客户端（从 wsdl 生成）。

    public class SetExpressCheckoutService{

        private static Logger log = Logger.getLogger(SetExpressCheckoutService.class);

        public static void main(String[] args){
            SetExpressCheckoutService setExpressCheckoutService = new SetExpressCheckoutService();

            //the parameters for the service
            Long userId = 5l;
            String amount = "25";
            String returnURL = "http://localhost:8080/integratingstuff-paypal/return_after_payment.xhtml";
            String cancelURL = "http://localhost:8080/integratingstuff-paypal/cancel_payment.xhtml";
            PaymentActionCodeType paymentAction = PaymentActionCodeType.Sale;
            CurrencyCodeType currencyCode = CurrencyCodeType.EUR;

            try {
                //calling the service, setting up the checkoutpage
                String token = setExpressCheckoutService.setExpressCheckout(userId, amount, currencyCode, returnURL,cancelURL,paymentAction);
                log.info("Url to redirect to: https://www.sandbox.paypal.com/webscr?cmd=_express-checkout&useraction=commit&token=" + token);
            } catch (PayPalException e) {
                log.error(e);
            }
        }

        public String setExpressCheckout(Long userId, String paymentAmount,
                CurrencyCodeType currencyCodeType, String returnURL, String cancelURL,
                    PaymentActionCodeType paymentAction) throws PayPalException{



CallerServices caller = new CallerServices();

            //construct and set the profile, these are the credentials we establish as "the shop" with Paypal
            APIProfile profile = ProfileFactory.createSignatureAPIProfile();
            profile.setAPIUsername("sdk-three_api1.sdk.com");
            profile.setAPIPassword("QFZCWN5HZM8VBG7Q");
            profile.setSignature("AVGidzoSQiGWu.lGj3z15HLczXaaAcK6imHawrjefqgclVwBe8imgCHZ");
            profile.setEnvironment("sandbox");
            caller.setAPIProfile(profile);

            //construct the request
            SetExpressCheckoutRequestType pprequest = new SetExpressCheckoutRequestType();
            pprequest.setVersion("63.0");

            //construct the details for the request
            SetExpressCheckoutRequestDetailsType details = new SetExpressCheckoutRequestDetailsType();

            PaymentDetailsType paymentDetails = new PaymentDetailsType();
            paymentDetails.setOrderDescription("Integrating Stuff Test Order");
            paymentDetails.setInvoiceID("INVOICE-" + Math.random());
            BasicAmountType orderTotal = new BasicAmountType(paymentAmount);
            orderTotal.setCurrencyID(currencyCodeType);
            paymentDetails.setOrderTotal(orderTotal);
            paymentDetails.setPaymentAction(paymentAction);
            details.setPaymentDetails(new PaymentDetailsType[]{paymentDetails});

            details.setReturnURL(returnURL);
            details.setCancelURL(cancelURL);
            details.setCustom(userId.toString());

            //set the details on the request
            pprequest.setSetExpressCheckoutRequestDetails(details);

            //call the actual webservice, passing the constructed request
            SetExpressCheckoutResponseType ppresponse = (SetExpressCheckoutResponseType) caller.call("SetExpressCheckout", pprequest);

            //get the token from the response
            return ppresponse.getToken();
        }
    }

我已尝试执行此方法，但出现异常
com.paypal.sdk.exceptions.FatalException: Unable to establish SOAP connection

原因：java.lang.NullPointerException 在 com.paypal.sdk.core.APICallerBase.getEndpointUrl(APICallerBase.java:296)

完整的堆栈跟踪是：

com.paypal.sdk.exceptions.FatalException: Unable to establish SOAP connection
        at com.paypal.sdk.core.soap.SOAPAPICaller.setupConnection(SOAPAPICaller.java:292)
        at com.paypal.sdk.services.CallerServices.setAPIProfile(CallerServices.java:112)
        at com.imedicor.liferay.organizations.util.PaypalService.setExpressCheckout(PaypalService.java:92)
        at com.imedicor.liferay.organizations.util.PaypalService.testing(PaypalService.java:43)
        at org.apache.jsp.organization_005fdetails_jsp._jspService(organization_005fdetails_jsp.java:500)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:72)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:73)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)
        at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:593)
        at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:530)
        at com.liferay.portlet.PortletRequestDispatcherImpl.dispatch(PortletRequestDispatcherImpl.java:323)
        at com.liferay.portlet.PortletRequestDispatcherImpl.include(PortletRequestDispatcherImpl.java:134)
        at com.imedicor.liferay.organizations.portlet.OrganizationPortlet.doView(OrganizationPortlet.java:83)
        at com.liferay.portal.kernel.portlet.LiferayPortlet.doDispatch(LiferayPortlet.java:218)
        at com.liferay.util.bridges.mvc.MVCPortlet.doDispatch(MVCPortlet.java:319)
        at javax.portlet.GenericPortlet.render(GenericPortlet.java:233)
        at com.liferay.portlet.FilterChainImpl.doFilter(FilterChainImpl.java:100)
        at com.liferay.portal.kernel.portlet.PortletFilterUtil.doFilter(PortletFilterUtil.java:64)
        at com.liferay.portal.kernel.servlet.PortletServlet.service(PortletServlet.java:111)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:72)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:73)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)
        at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:593)
        at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:530)
        at com.liferay.portlet.InvokerPortletImpl.invoke(InvokerPortletImpl.java:534)
        at com.liferay.portlet.InvokerPortletImpl.invokeRender(InvokerPortletImpl.java:607)
        at com.liferay.portlet.InvokerPortletImpl.render(InvokerPortletImpl.java:359)
        at org.apache.jsp.html.portal.render_005fportlet_jsp._jspService(render_005fportlet_jsp.java:1207)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
        at com.liferay.portal.servlet.DirectRequestDispatcher.include(DirectRequestDispatcher.java:97)
        at com.liferay.portal.servlet.PACLRequestDispatcherWrapper.doDispatch(PACLRequestDispatcherWrapper.java:90)
        at com.liferay.portal.servlet.PACLRequestDispatcherWrapper.include(PACLRequestDispatcherWrapper.java:54)
        at com.liferay.portal.util.PortalImpl.renderPortlet(PortalImpl.java:5158)
        at com.liferay.portal.util.PortalUtil.renderPortlet(PortalUtil.java:1569)
        at com.liferay.portlet.layoutconfiguration.util.RuntimePortletImpl.processPortlet(RuntimePortletImpl.java:165)
        at com.liferay.portlet.layoutconfiguration.util.RuntimePortletImpl.processPortlet(RuntimePortletImpl.java:203)
        at com.liferay.portlet.layoutconfiguration.util.RuntimePortletImpl.processPortlet(RuntimePortletImpl.java:190)
        at com.liferay.portlet.layoutconfiguration.util.RuntimePortletUtil.processPortlet(RuntimePortletUtil.java:87)
        at com.liferay.portlet.layoutconfiguration.util.velocity.TemplateProcessor.processMax(TemplateProcessor.java:165)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:389)
        at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:378)
        at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:270)
        at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:262)
        at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:342)
        at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:336)
        at org.apache.velocity.Template.merge(Template.java:328)
        at org.apache.velocity.Template.merge(Template.java:235)
        at org.apache.velocity.app.VelocityEngine.mergeTemplate(VelocityEngine.java:381)
        at com.liferay.portal.velocity.VelocityEngineImpl.mergeTemplate(VelocityEngineImpl.java:264)
        at com.liferay.portal.kernel.velocity.VelocityEngineUtil.mergeTemplate(VelocityEngineUtil.java:73)
        at com.liferay.portlet.layoutconfiguration.util.RuntimePortletImpl.doProcessTemplate(RuntimePortletImpl.java:499)
        at com.liferay.portlet.layoutconfiguration.util.RuntimePortletImpl.doDispatch(RuntimePortletImpl.java:394)
        at com.liferay.portlet.layoutconfiguration.util.RuntimePortletImpl.processTemplate(RuntimePortletImpl.java:228)
        at com.liferay.portlet.layoutconfiguration.util.RuntimePortletUtil.processTemplate(RuntimePortletUtil.java:125)
        at org.apache.jsp.html.portal.layout.view.control_005fpanel_jsp._jspService(control_005fpanel_jsp.java:676)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:72)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:73)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)
        at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:593)
        at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:530)
        at com.liferay.portal.action.LayoutAction.includeLayoutContent(LayoutAction.java:468)
        at com.liferay.portal.action.LayoutAction.processLayout(LayoutAction.java:735)
        at com.liferay.portal.action.LayoutAction.execute(LayoutAction.java:249)
        at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
        at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
        at com.liferay.portal.struts.PortalRequestProcessor.process(PortalRequestProcessor.java:187)
        at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
        at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
        at com.liferay.portal.servlet.MainServlet.callParentService(MainServlet.java:560)
        at com.liferay.portal.servlet.MainServlet.service(MainServlet.java:537)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:72)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
        at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:163)
        at com.liferay.portal.servlet.filters.secure.SecureFilter.processFilter(SecureFilter.java:294)
        at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:57)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:206)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:108)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:73)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)
        at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:471)
        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:402)
        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329)
        at com.liferay.portal.servlet.FriendlyURLServlet.service(FriendlyURLServlet.java:138)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:72)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
        at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:163)
        at com.liferay.portal.servlet.filters.strip.StripFilter.processFilter(StripFilter.java:335)
        at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:57)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:206)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:108)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
        at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:163)
        at com.liferay.portal.servlet.filters.gzip.GZipFilter.processFilter(GZipFilter.java:123)
        at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:57)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:206)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:108)
        at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:163)
        at com.liferay.portal.servlet.filters.secure.SecureFilter.processFilter(SecureFilter.java:294)
        at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:57)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:206)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:108)
        at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:163)
        at com.liferay.portal.servlet.filters.i18n.I18nFilter.processFilter(I18nFilter.java:241)
        at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:57)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:206)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:108)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
        at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:163)
        at com.liferay.portal.servlet.filters.etag.ETagFilter.processFilter(ETagFilter.java:56)
        at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:57)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:206)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:108)
        at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:163)
        at com.liferay.portal.servlet.filters.autologin.AutoLoginFilter.processFilter(AutoLoginFilter.java:246)
        at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:57)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:206)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:108)
        at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:163)
        at com.liferay.portal.servlet.filters.sso.ntlm.NtlmPostFilter.processFilter(NtlmPostFilter.java:83)
        at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:57)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:206)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:108)
        at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:163)
        at com.liferay.portal.sharepoint.SharepointFilter.processFilter(SharepointFilter.java:80)
        at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:57)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:206)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:108)
        at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:163)
        at com.liferay.portal.servlet.filters.virtualhost.VirtualHostFilter.processFilter(VirtualHostFilter.java:216)
        at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:57)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:206)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:108)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:187)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:95)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
        at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:738)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:206)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:108)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:167)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:95)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:167)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:95)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:187)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:95)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:73)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
        at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:999)
        at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565)
        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.NullPointerException
        at com.paypal.sdk.core.APICallerBase.getEndpointUrl(APICallerBase.java:296)
        at com.paypal.sdk.core.soap.SOAPAPICaller.setupConnection(SOAPAPICaller.java:193)

所以我得到这个异常是因为没有设置端点 url？

这种情况下如何设置endpoint url？

我还尝试在上述方法开始时以以下方式为端点添加配置。

Map<String, String> sdkConfig = new HashMap<String, String>();
        sdkConfig.put("mode", "sandbox");
        sdkConfig.put("acct1.UserName", "sdk-three_api1.sdk.com");
        sdkConfig.put("acct1.Password", "QFZCWN5HZM8VBG7Q");
        sdkConfig.put("acct1.Signature","AVGidzoSQiGWu.lGj3z15HLczXaaAcK6imHawrjefqgclVwBe8imgCHZ");
        PayPalAPIInterfaceServiceService service = new PayPalAPIInterfaceServiceService(sdkConfig);

但我仍然遇到同样的异常。

请在这方面指导我。

谢谢，

【问题讨论】：

  • 有人知道如何使用经典的 api/soap 客户端与 paypal 建立连接吗？
  • 您能否指定我可以在哪里下载包含以下类的JAR 文件：CallerServices、APIProfile 等？我在任何地方都找不到这个 JAR
  • 从这里您可以下载 paypal_base.jar http://www.java2s.com/Code/Jar/p/Downloadpaypalbasejar.htm 。它包含所有这些类。
  • 另外你知道paypal rest sdk提供并发计费和expressCheckout的实现方法吗？我没有在 paypal sdks 中找到它。
  • 我正在尝试使用soap，因为我想执行expressCheckout和并发计费。但仍然没有运气，paypal论坛也没有提供任何回复。它很奇怪。

标签： java web-services soap paypal


【解决方案1】：

好的，所以我没能弄清楚为什么CallerService 会抛出提到的异常，因为即使在反编译提到的paypal_base.jar 之后，代码也相当繁琐，而且很难找出幕后发生的事情。看起来它已经过时了，因为除了几个地方之外，我在网上的任何地方都找不到对这个 JAR 的引用。

但我真的建议您坚持使用 PayPal 提供的原始文档。我自己试过了，这就是我发现的：

  1. 点击上述文章中的Paypal API SDK and Downloads 链接，然后单击Classic APIs 类别下的Merchant 链接（如果您在网上挖掘，您会发现PayPal Merchant API 应该用于ExpressCheckout 请求）。点击上方的Java 按钮并使用Maven（首选）或直接使用页面底部的下载链接下载SDK。

  2. 将下载的 JAR 添加到您的项目并删除其他 PayPal JAR，因为下载的 Merchant API jar 应该包含所有必要的类。

  3. 现在一切都靠猜测了 :) 所以在上面的代码 sn-p 中，你已经形成了 SetExpressCheckoutRequestType 的实例，你需要 some invocation code 来获取 SetExpressCheckoutRequestType 的实例并返回 SetExpressCheckoutResponseType 的实例。

  4. 我在 Eclipse 中使用功能 Search -&gt; References -&gt; Workspace 来查找 SetExpressCheckoutRequestType 在 Merchant API jar 中的使用位置。此搜索显示（除了其他地方）有一个名为 SetExpressCheckoutReq 的类，其方法为 setSetExpressCheckoutRequest(SetExpressCheckoutRequestType)

  5. 然后我再次使用搜索功能搜索SetExpressCheckoutReq类的用法，发现有PayPalAPIInterfaceServiceService类的方法setExpressCheckout(SetExpressCheckoutReq setExpressCheckoutReq)返回需要的SetExpressCheckoutResponseType。

  6. 在setExpressCheckout(SetExpressCheckoutReq setExpressCheckoutReq) 方法旁边，有一个方法也接受ICredential 参数并具有以下签名： setExpressCheckout(SetExpressCheckoutReq setExpressCheckoutReq, ICredential credential)

  7. 再次使用 Eclipse，我寻找实现 ICredential 接口的类，发现有一个名为 SignatureCredential 的类，其构造函数采用 3 个参数：用户名、密码、签名。在我看来，这是要走的路。

    所以，非常近似 - 代码 sn-p 现在应该如下所示：

    final SetExpressCheckoutRequestType ppRequest = ...; // here you create your request as in code snippet above

final Properties serviceConfigurationProperties = ...; // bookmark #1
final PayPalAPIInterfaceServiceService service = new PayPalAPIInterfaceServiceService(serviceConfigurationProperties);

final SetExpressCheckoutReq request = new SetExpressCheckoutReq();
request.setSetExpressCheckoutRequest(ppRequest);

final ICredentials credentials = new SignatureCredentials(username, password, signature);
final SetExpressCheckoutResponseType response = service.setExpressCheckout(request, credentials);

Bookmark #1: 应该通过Properties 实例和服务配置。要找出应该指定哪些属性，应该搜索它并尝试坚持原始 PayPal 文档而不是 3rd 方博客 :) 如果查看 PayPalAPIInterfaceServiceService 类的 Javadocs，他/她会发现有提到的文件“ sdk_config.properties”。谷歌搜索后，我找到了该文件的几个示例：Example #1、Example #2

请注意，这不是完整的解决方案——它更像是我之前使用 PayPal SOAP API 的提示集合。这个 API 经常变化，文档不简洁，所以我真的建议下载带有源代码的 Merchant API jar，每当出现问题时 - 还要查看代码 - 这通常会澄清很多。请同时遵守 PayPal 的原始文档：

  1. PayPal SOAP API Basics
  2. PayPal Merchant SDK on GitHub

另外，如果您没有使用 Java 的 Web 服务客户端的经验，我建议您尝试使用网上的教程来实现一些简单的 - 这可能会澄清很多。

再次抱歉没有发布完整而简洁的代码 sn-p - 从现在开始我已经有 2 年没有使用 PayPal 了，那时我花了一周的工作时间来找出所有细节并设置它并运行它。请发布问题 - 我会在有时间的时候尝试回答它们

希望这会有所帮助...

编辑

关于response.getAck() 返回FAILURE - 我过去也遇到过这样的问题。我通过试验请求中发送的参数解决了这个问题 - PayPal 对这些参数非常敏感，如果任何参数被省略或没有正确的值，只需返回 FAILURE。

您可以在此处找到完整的参数列表： PayPal SetExpressCheckout SOAP API documentation

另请注意，Merchant SDK 的版本 2.5.106 使用版本 106.0 的 API。

希望这会有所帮助...

【讨论】：

  • 谢谢你的朋友。它有很大帮助。现在我可以使用 DirectPayment 执行交易，还可以创建 recurringPaymentProfile。
  • 但很惊讶，无法执行 expressCheckout ，得到 response.getAck() 为 FAILURE。
  • @Java 我很高兴它有帮助！关于response.getAck()返回FAILURE，请参考我回答的编辑部分。
【解决方案2】：

需要设置端点url

    service.EndPoint=https://api-3t.paypal.com/2.0

此外，您可能还需要更多设置：

    service.Binding=SOAP
    service.EndPoint=https://api-3t.paypal.com/2.0
    service.RedirectURL=https://www.paypal.com/webscr&cmd=
    service.DevCentralURL=https://developer.paypal.com
    service.IPNEndpoint=https://www.paypal.com/cgi-bin/webscr

如果您使用的是沙盒，请使用以下设置：

   service.Binding=SOAP
   service.EndPoint=https://api-3t.sandbox.paypal.com/2.0
   service.RedirectURL=https://www.sandbox.paypal.com/webscr&cmd=
   service.DevCentralURL=https://developer.paypal.com
   service.IPNEndpoint=https://www.sandbox.paypal.com/cgi-bin/webscr

【讨论】：

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