Geek Answers Handbook

Failed to establish SOAP connection when using paypal api

I am trying to use the paypal soap client and executing the setExpressCheckout method with a Paypal Express Checkout link from Java .

So here I use only paypal-base.jar and paypal-stubs.jar of the soap client (generated from wsdl).

    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();
        }
    }

I tried to execute this method, but I get an exception like com.paypal.sdk.exceptions.FatalException: Unable to establish SOAP connection

Called: java.lang.NullPointerException at com.paypal.sdk.core.APICallerBase.getEndpointUrl (APICallerBase.java:296)

Full stack:

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)

So, am I getting this exception due to an unspecified endpoint URL?

How to set the endpoint url in this case?

I also tried to add the configuration for the endpoint as follows when running the above method.

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);

but still I get the same exception.

.

,

+4
2

, , CallerService , paypal_base.jar , , . , - , JAR - , .

, PayPal. :

  • Paypal API SDK , Merchant Classic APIs ( , , PayPal Merchant API ExpressCheckout). Java SDK, Maven (), .

  • JAR JAR PayPal, Merchant API jar .

  • :) , SetExpressCheckoutRequestType, some invocation code, SetExpressCheckoutRequestType SetExpressCheckoutResponseType.
  • Search -> References -> Workspace Eclipse, , SetExpressCheckoutRequestType Merchant API jar. , ( ) SetExpressCheckoutReq, setSetExpressCheckoutRequest(SetExpressCheckoutRequestType)
  • SetExpressCheckoutReq , PayPalAPIInterfaceServiceService setExpressCheckout(SetExpressCheckoutReq setExpressCheckoutReq), SetExpressCheckoutResponseType.
  • setExpressCheckout(SetExpressCheckoutReq setExpressCheckoutReq) , ICredential : setExpressCheckout(SetExpressCheckoutReq setExpressCheckoutReq, ICredential credential)

  • Eclipse, , ICredential, , SignatureCredential , 3 : , , . , .

    , - :

    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: Properties . , , Google PayPal, . Javadocs PayPalAPIInterfaceServiceService, / , , "sdk_config.properties". : # 1, # 2

, - , , API- PayPal SOAP. API , Merchant API jar , - , - - . PayPal:

, , Web- Java, , - .

, . PayPal 2 , , . , - ,

, ...

response.getAck() FAILURE - . , , , , - PayPal , , - , FAILURE.

: API SOAP API PayPal SetExpressCheckout

, 2.5.106 of Merchant SDK API 106.0.

, ...

+4

URL-

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

, , , :

    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

, :

   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
0

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