我正在使用SAP S / 4HANA Cloud SDK关注Deep Dive 9：租户和用户感知微服务通过REST API进行通信，并已在转换器服务和Exchange费率服务之间建立通信。
但是，当我尝试运行时
，它返回内部服务器错误。
我已经检查了转换器应用中的日志：
2018-06-19T15:42:15.86+1000 [APP/PROC/WEB/0] OUT Destination: ScpCfDestination(destinationType=HTTP, name=app, description=null, propertiesByName={Type=HTTP, ProxyType=Internet, Authentication=AppToAppSSO, URL=https://approuter-exchangerate-<accountid2>.cfapps.eu10.hana.ondemand.com, Name=app})
2018-06-19T15:42:15.86+1000 [APP/PROC/WEB/0] OUT HttpClient: com.sap.cloud.sdk.cloudplatform.connectivity.HttpClientWrapper@5e49142a
2018-06-19T15:42:16.53+1000 [APP/PROC/WEB/0] OUT HttpResponse: HTTP/1.1 200 OK [Cache-Control: no-cache, no-store, must-revalidate, Content-Length: 512, Date: Tue, 19 Jun 2018 05:42:16 GMT, Set-Cookie: locationAfterLogin=%2Fexchange-rate; Path=/; HttpOnly, X-Frame-Options: SAMEORIGIN, X-Request-Id: jil9hsq1, X-Vcap-Request-Id: cbd2ec1a-e318-4a88-56dd-68b6f5183aa2] org.apache.http.conn.BasicManagedEntity@1d9b5223
2018-06-19T15:42:16.53+1000 [APP/PROC/WEB/0] OUT HttpEntity: org.apache.http.conn.BasicManagedEntity@1d9b5223
2018-06-19T15:42:16.53+1000 [APP/PROC/WEB/0] OUT Rates Json: <html><head><link rel="shortcut icon" href="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" /><script>document.cookie="fragmentAfterLogin="+encodeURIComponent(location.hash)+";path=/";location="https://p1942866225trial.authentication.eu10.hana.ondemand.com/oauth/authorize?response_type=code&client_id=sb-exchangerate-<accountId2>!t3509&redirect_uri=https%3A%2F%2Fapprouter-exchangerate-<accountId2>.cfapps.eu10.hana.ondemand.com%2Flogin%2Fcallback"</script></head></html>
我可以看到HttpResponse成功了。但是，利率Json（这是回归实体）似乎无法正常工作。
我已经按照博客中的所有步骤进行操作，但不知道为什么它会像这样返回错误。 你能否说一下可能是什么原因？
更新： 我在场景中使用了一个S用户和一个P用户。
在我更改并使用2个P用户后，我可以看到响应在转换器日志中。使用S-user有什么问题？
但是，响应不会显示在浏览器中。相反，它显示错误：内部服务器错误和写入日志：
{ "written_at":"2018-06-21T02:25:30.359Z","written_ts":39256458075633,"component_id":"e8cb8a72-6ca9-4bcb-86db-c4a3a6addfe0","component_name":"converter","DCComponent":"","organization_name":"-","component_type":"application","space_name":"dev","component_instance":"0","organization_id":"-","correlation_id":"-","CSNComponent":"","space_id":"a17affa3-0b14-4c07-af21-6a2afd1f40bd","Application":"converter","container_id":"10.0.137.152","type":"log","logger":"org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/].[com.mycompany.ConverterServlet]","thread":"http-bio-0.0.0.0-8080-exec-3","level":"ERROR","categories":[],"msg":"Servlet.service() for servlet [com.mycompany.ConverterServlet] in context with path [] threw exception","stacktrace":["java.io.IOException: Attempted read from closed stream."," at org.apache.http.impl.io.ContentLengthInputStream.read(ContentLengthInputStream.java:165)"," at org.apache.http.conn.EofSensorInputStream.read(EofSensorInputStream.java:135)"," at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)"," at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)"," at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)"," at java.io.InputStreamReader.read(InputStreamReader.java:184)"," at java.io.Reader.read(Reader.java:140)"," at org.apache.http.util.EntityUtils.toString(EntityUtils.java:225)"," at org.apache.http.util.EntityUtils.toString(EntityUtils.java:306)"," at com.mycompany.ConverterServlet.doGet(ConverterServlet.java:65)"," at javax.servlet.http.HttpServlet.service(HttpServlet.java:624)"," at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)"," at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)"," at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)"," at org.apache.tomee.webservices.CXFJAXRSFilter.doFilter(CXFJAXRSFilter.java:83)"," at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)"," at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)"," at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)"," at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)"," at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)"," at com.sap.cloud.sdk.cloudplatform.servlet.RequestContextServletFilter$1.execute(RequestContextServletFilter.java:215)"," at com.sap.cloud.sdk.cloudplatform.servlet.Executable.call(Executable.java:19)"," at com.sap.cloud.sdk.cloudplatform.servlet.Executable.call(Executable.java:9)"," at com.sap.cloud.sdk.cloudplatform.servlet.RequestContextCallable.call(RequestContextCallable.java:78)"," at com.sap.cloud.sdk.cloudplatform.servlet.RequestContextServletFilter.doFilter(RequestContextServletFilter.java:217)"," at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)"," at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)"," at com.sap.cloud.sdk.cloudplatform.security.servlet.HttpCachingHeaderFilter.doFilter(HttpCachingHeaderFilter.java:52)"," at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)"," at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)"," at com.sap.cloud.sdk.cloudplatform.security.servlet.HttpSecurityHeadersFilter.doFilter(HttpSecurityHeadersFilter.java:37)"," at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)"," at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)"," at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)"," at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)"," at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)"," at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)"," at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)"," at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)"," at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)"," at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)"," at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154)"," at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)"," at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)"," at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)"," at org.springframework.security.oauth2.provider.authentication.OAuth2AuthenticationProcessingFilter.doFilter(OAuth2AuthenticationProcessingFilter.java:176)"," at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)"," at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50)"," at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)"," at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)"," at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)"," at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)"," at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)"," at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)"," at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)"," at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)"," at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)"," at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)"," at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)"," at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)"," at org.apache.tomee.catalina.OpenEJBValve.invoke(OpenEJBValve.java:44)"," at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:506)"," at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)"," at com.sap.xs.java.valves.ErrorReportValve.invoke(ErrorReportValve.java:66)"," at ch.qos.logback.access.tomcat.LogbackValve.invoke(LogbackValve.java:191)"," at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)"," at com.sap.xs.security.UserInfoValve.invoke(UserInfoValve.java:23)"," at com.sap.xs.statistics.tomcat.valve.RequestTracingValve.invoke(RequestTracingValve.java:43)"," at com.sap.xs.logging.catalina.RuntimeInfoValve.invoke(RuntimeInfoValve.java:40)"," at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:683)"," at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445)"," at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1115)"," at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)"," at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)"," 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:836)"] }
答案 0 :(得分：4)
请确保正确保护被叫申请（汇率）。为此，请直接通过其应用程序路由器调用应用程序：汇率应用程序路由器URL / exchange-rate ，并在输入凭据后检查是否获得了正确的有效负载。
如果没有，请根据您的帐户数据检查并修改您的xs-security-exchangerate.json和manifest-approuter-exchangerate.yml。如果发生更改，请重新运行汇率服务的部署和服务绑定。
祝你好运， 叶卡捷琳娜