我按照此博客中的说明配置了 Principal Propagation 和 OAuth2。但是，当我去测试我的应用程序时，我收到以下错误消息（在被要求通过 IdP 使用我的 S/4HC 用户凭据登录 SAP CP 之后）。
Error: Failed to execute OData Metadata request.com.sap.cloud.sdk.odatav2.connectivity.ODataException: Failed to execute OData Metadata request.
at com.sap.cloud.sdk.odatav2.connectivity.ODataQuery.loadEntriesFromDestination(ODataQuery.java:215)
at com.sap.cloud.sdk.odatav2.connectivity.ODataQuery.internalExecute(ODataQuery.java:167)
at com.sap.cloud.sdk.odatav2.connectivity.ODataQuery.execute(ODataQuery.java:105)
at com.sap.cloud.sdk.odatav2.connectivity.ODataQuery.execute(ODataQuery.java:150)
at com.sap.cloud.sdk.odatav2.connectivity.ODataQuery.execute(ODataQuery.java:136)
at com.sap.cloud.sdk.s4hana.datamodel.odata.helper.FluentHelperRead.execute(FluentHelperRead.java:197)
at com.sap.cloud.sdk.s4hana.datamodel.odata.helper.FluentHelperRead.execute(FluentHelperRead.java:23)
at com.sap.cloud.sdk.s4hana.datamodel.odata.helper.FluentHelperBasic.execute(FluentHelperBasic.java:85)
at com.sap.s4hc.dbs.ManagePirServlet.doGet(ManagePirServlet.java:80)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.openejb.server.httpd.EEFilter.doFilter(EEFilter.java:65)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.sap.core.communication.server.CertValidatorFilter.doFilter(CertValidatorFilter.java:331)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.sap.cloud.sdk.cloudplatform.servlet.RequestContextServletFilter.lambda$doFilter$0(RequestContextServletFilter.java:171)
at com.sap.cloud.sdk.cloudplatform.servlet.RequestContextCallable.call(RequestContextCallable.java:95)
at com.sap.cloud.sdk.cloudplatform.servlet.RequestContextServletFilter.doFilter(RequestContextServletFilter.java:173)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.sap.cloud.sdk.cloudplatform.security.servlet.HttpCachingHeaderFilter.doFilter(HttpCachingHeaderFilter.java:57)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.sap.cloud.sdk.cloudplatform.security.servlet.HttpSecurityHeadersFilter.doFilter(HttpSecurityHeadersFilter.java:42)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.filters.RestCsrfPreventionFilter.doFilter(RestCsrfPreventionFilter.java:113)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.tomee.catalina.OpenEJBValve.invoke(OpenEJBValve.java:44)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:621)
at com.sap.cloud.runtime.impl.bridge.security.AbstractAuthenticator.invoke(AbstractAuthenticator.java:206)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.tomee.catalina.OpenEJBSecurityListener$RequestCapturer.invoke(OpenEJBSecurityListener.java:97)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
at com.sap.core.tenant.valve.TenantValidationValve.invokeNextValve(TenantValidationValve.java:182)
at com.sap.core.tenant.valve.TenantValidationValve.invoke(TenantValidationValve.java:97)
at com.sap.js.statistics.tomcat.valve.RequestTracingValve.callNextValve(RequestTracingValve.java:101)
at com.sap.js.statistics.tomcat.valve.RequestTracingValve.invoke(RequestTracingValve.java:57)
at com.sap.core.js.monitoring.tomcat.valve.RequestTracingValve.invoke(RequestTracingValve.java:27)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:808)
Caused by: com.sap.cloud.sdk.s4hana.datamodel.odata.helper.ODataVdmErrorResultHandler$ErpODataException:
at com.sap.cloud.sdk.s4hana.datamodel.odata.helper.ODataVdmErrorResultHandler.createException(ODataVdmErrorResultHandler.java:105)
at com.sap.cloud.sdk.s4hana.datamodel.odata.helper.ODataVdmErrorResultHandler.createError(ODataVdmErrorResultHandler.java:86)
at com.sap.cloud.sdk.s4hana.datamodel.odata.helper.ODataVdmErrorResultHandler.createError(ODataVdmErrorResultHandler.java:31)
at com.sap.cloud.sdk.odatav2.connectivity.internal.ODataConnectivityUtil.checkHttpStatus(ODataConnectivityUtil.java:185)
at com.sap.cloud.sdk.odatav2.connectivity.cache.metadata.GuavaMetadataCache.getEdm(GuavaMetadataCache.java:131)
at com.sap.cloud.sdk.odatav2.connectivity.cache.metadata.GuavaMetadataCache.getEdm(GuavaMetadataCache.java:110)
at com.sap.cloud.sdk.odatav2.connectivity.ODataQuery.loadMetadata(ODataQuery.java:250)
at com.sap.cloud.sdk.odatav2.connectivity.ODataQuery.loadEntriesFromDestination(ODataQuery.java:213)
... 61 more
代码
我该如何进一步解决这个问题？我似乎无法在日志中找到更多详细信息。
我的代码：
final List<MaintainYearsPeriod> maintainYearsPeriod = new DefaultPlannedIndependentRequirementService().getAllMaintainYearsPeriod().top(50).execute();
writer.write(new Gson().toJson(maintainYearsPeriod));
response.setContentType(“application/json”);
谢谢，马蒂