我尝试使用 HANA 云文档服务与 Maven 和 Spring 集成 CMIS。
当我尝试在没有 Maven/Spring 上下文的情况下使用该代码时，它工作正常。 （为了更好地理解，请看这里：http://scn.sap.com/community/developer-center/cloud-platform/blog/2013/04/13/document-management-using-hana-cloud- android 上的文档服务)
Session openCmisSession = null;
EcmService ecmSvc = null;
InitialContext ctx = new InitialContext();
String lookupName = "java:comp/env/" + "EcmService";
try
{
Object obj = ctx.lookup(lookupName);
ecmSvc = (EcmService) obj;
}
catch (Exception e)
{
e.printStackTrace();
}
使用Spring，当它尝试转换代理对象时发生异常。
ecmSvc = (EcmService) obj; //Here, the EcmService is a interface
例外情况如下。任何帮助将不胜感激。谢谢。
java.lang.ClassCastException: com.sun.proxy.$Proxy146 无法转换为 com.sap.ecm.api.EcmService
at com.msg.reinsurance.application.account.service.FindAccountFacadeImp.findContract(FindAccountFacadeImp.java:93) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.cxf.service.invoker.AbstractInvoker.performInvocation(AbstractInvoker.java:180) at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:96) at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:189) at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:99) at org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:59) at org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:96) at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308) at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121) at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:254) at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:234) at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:208) at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:160) at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:180) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:298) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doGet(AbstractHTTPServlet.java:222) at javax.servlet.http.HttpServlet.service(HttpServlet.java:735) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:273) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) 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 org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 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:220) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) at com.sap.core.jpaas.security.auth.service.lib.AbstractAuthenticator.invoke(AbstractAuthenticator.java:168) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) at com.sap.core.tenant.valve.TenantValidationValve.invokeNextValve(TenantValidationValve.java:167) at com.sap.core.tenant.valve.TenantValidationValve.invoke(TenantValidationValve.java:91) at com.sap.js.statistics.tomcat.valve.RequestTracingValve.invoke(RequestTracingValve.java:34) at com.sap.core.js.monitoring.tomcat.valve.RequestTracingValve.invoke(RequestTracingValve.java:27) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745)
最好的选择是，我认为您正在打包 resp。将客户端库添加到您的应用程序中，以便它们与平台已经提供的库发生冲突（由于不同的类加载器）。 仔细检查一下。 此外，如果问题不是由我的假设引起的，您可以在此处检查其他解决方法：http://scn.sap.com/thread/3803685