春天JNDI查找 - 不能施放com.sun.proxy $代理到EJB類

當我嘗試查找從另一個模塊一個EJB，JBoss會返回此異常：

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.ClassCastException: com.sun.proxy.$Proxy125 cannot be cast to com.foo.spring.logging.UserCategoryLogService 
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:927) 
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:822) 
javax.servlet.http.HttpServlet.service(HttpServlet.java:707) 
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:796) 
javax.servlet.http.HttpServlet.service(HttpServlet.java:790) 
io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) 
io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:130) 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) 
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118) 
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84) 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103) 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113) 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:139) 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54) 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45) 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
org.springframework.security.web.authentication.ui.DefaultLoginPageGeneratingFilter.doFilter(DefaultLoginPageGeneratingFilter.java:91) 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:183) 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105) 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:125) 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) 
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192) 
org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160) 
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) 
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259) 
io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:60) 
io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:132) 
io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:85) 
io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61) 
io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) 
org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78) 
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) 
io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:113) 
io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:56) 
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) 
io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45) 
io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:61) 
io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58) 
io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70) 
io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76) 
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) 
org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61) 
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) 
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) 
io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:240) 
io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:227) 
io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:73) 
io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:146) 
io.undertow.server.Connectors.executeRootHandler(Connectors.java:177) 
io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:727) 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
java.lang.Thread.run(Thread.java:722)

它看起來像目前爲止查找工作正常，但我根本無法投射對象。我的項目是一個Spring-MVC項目。我正在連接的後端接收UserCategoryLogService，它是一個簡單的Java-EE項目。

我嘗試了不同的方法來查找和投射。通常我走這條路：

try { 

     UserCategoryLogService logService = (UserCategoryLogService) new InitialContext.lookup("java:jboss/exported/backend/UserCategoryLogServiceImpl!logging.UserCategoryLogService"); 
     logService.logLogin(username); 
    } catch (NamingException e) { 
     e.printStackTrace(); 
    }

，通常這是工作，當我在我的後端項目做本地EJB的查找。我也嘗試創建一個屬性並在創建新的上下文時使用它。它將返回相同的錯誤。

我將UserCategoryLogService接口添加到了我的spring-config.xml中，但它無濟於事。

春天我沒有做關於JNDI的額外配置。我試圖查找@Local和@Remote，兩者都會返回相同的castingException。

我使用Wildfly 8.1.0

你有任何想法如何處理代理對象？那麼爲什麼ejb-lookup可以和我的java-ee後端一起工作，而不是用我的spring-mvc項目呢？

接口春天項目：

import javax.ejb.Remote; 

@Remote 
public interface UserCategoryLogService { 
    void logUserCatCall(String userId, Integer categoryId); 
    void logLogin(String userId); 

}

乾杯

編輯二零一四年九月二十七日：

我發現這個問題： Injecting EJB 3 into Spring Bean

於是，我就自動裝配豆和我得到了同樣的錯誤：

Caused by: org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'java:jboss/exported/backend/UserCategoryLogServiceImpl!logging.UserCategoryLogService' must be of type [com.frontend.spring.logging.UserCategoryLogService], but was actually of type [com.sun.proxy.$Proxy105]

EDIT2：

@Bean 
    UserCategoryLogService getUserCatLogService() { 
     UserCategoryLogService ucLog = null; 
     JndiTemplate template = new JndiTemplate(); 

     try { 
      ucLog = (UserCategoryLogService) template.lookup("java:jboss/exported/backend/UserCategoryLogServiceImpl!logging.UserCategoryLogService"); 
     } catch (NamingException e) { 
      e.printStackTrace(); 
     } 


     return ucLog; 
    }

是行不通的兩種：

threw exception; nested exception is java.lang.ClassCastException: com.sun.proxy.$Proxy125 cannot be cast to com.recc.frontend.logging.UserCategoryLogService

來源

2014-09-25 Goot

這是否被部署爲單耳應用？ – maress 2014-09-25 11:14:47

2個項目，都部署爲.war文件 – Goot 2014-09-25 12:16:29

此問題現在有一個賞金 – Goot 2014-09-29 12:43:17

我想通了，如何解決這個問題，但我不知道這是最好的方式。

您可以使用SimpleRemoteStatelessSessionProxyFactoryBean在Spring中查找遠程EJBS。

SimpleRemoteStatelessSessionProxyFactoryBean fb = new SimpleRemoteStatelessSessionProxyFactoryBean(); 
      fb.setJndiName(UserCategoryLogService.JNDI_NAME); 
      fb.setResourceRef(true); 
      fb.setBusinessInterface(UserCategoryLogService.class); 
      // Need lifecycle methods 
      fb.afterPropertiesSet(); 
      fb.setJndiTemplate(new JndiTemplate()); 
      UserCategoryLogService logservice = (UserCategoryLogService) fb.getObject();

這將返回正確的bean ans也不會需要任何額外的註釋或xml配置。

賞金仍然活躍。如果你發佈更好的工作方式，你將獲得+50的聲望。

編輯：我也在尋找有狀態的EJB的實現，根據名稱這將只適用於無狀態的ejbs。

來源

2014-09-29 13:24:16 Goot

春天JNDI查找 - 不能施放com.sun.proxy $代理到EJB類

回答

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