Java 向强制转换代理对象发出

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，效果很好。 （为了更好地理解，请看这里：）

使用Spring，当它尝试强制转换代理对象时会发生异常

ecmSvc = (EcmService) obj; //Here, the EcmService is a interface

例外情况是：

java.lang.ClassCastException:com.sun.proxy.$Proxy146不能强制转换为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)

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任何帮助都将不胜感激。谢谢。

我敢打赌，你是在收拾行李。将客户端库导入到应用程序中，以便它们与平台已经提供的库发生冲突（由于类加载器不同）。 再检查一下这个。

---

此外，如果问题不是由我的假设引起的，您可以在此处查看另一种解决方法：

根据最佳选择，我认为您正在打包resp。将客户端库导入到应用程序中，以便它们与平台已经提供的库发生冲突（由于类加载器不同）。 再检查一下这个。 此外，如果问题不是由我的假设引起的，您可以在此处查看其他解决方法：

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)