我有一台Tomcat 6服务器，我正在开发一个与Java EE 5兼容的REST Web服务。
该项目是在NetBeans 6.9.1上开发的。我成功部署了项目，程序运行，我在浏览器中收到一个网页。现在该计划的一部分工作。也就是说，我可以从网站访问Java bean，检索数据并在网页上显示它。
但我无法访问网络服务。 Web服务使用Java Enterprise Beans（EJB）实现。服务器上是否缺少EJB或REST Web服务的库？
这是我在页面上看到的错误：
HTTP status 404. Description: the requested resource is not available。可能是什么问题？
这是我在NetBeans上的内容：
17-Mar-2011 18:01:14 org.apache.catalina.loader.WebappClassLoader loadClass
INFO: Illegal access: this web application instance has been stopped already. Could not load java.lang.Object. The eventual following stack trace is caused by an error thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access, and has no functional impact.
java.lang.IllegalStateException
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1402)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1361)
at com.sun.faces.application.ConverterPropertyEditorFactory$DisposableClassLoader.loadClass(ConverterPropertyEditorFactory.java:447)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:316)
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
at java.lang.Class.getConstructor0(Class.java:2699)
at java.lang.Class.newInstance0(Class.java:326)
at java.lang.Class.newInstance(Class.java:308)
at java.beans.PropertyEditorManager.findEditor(PropertyEditorManager.java:79)
at com.sun.faces.application.ApplicationImpl.addPropertyEditorIfNecessary(ApplicationImpl.java:690)
at com.sun.faces.application.ApplicationImpl.addConverter(ApplicationImpl.java:660)
at com.sun.faces.config.ConfigureListener.configure(ConfigureListener.java:727)
at com.sun.faces.config.ConfigureListener.configure(ConfigureListener.java:489)
at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:381)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3972)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4467)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:637)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:521)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1359)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:297)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:836)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:761)
at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1500)
at org.apache.catalina.manager.ManagerServlet.deploy(ManagerServlet.java:849)
at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:351)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:199)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:558)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555)
at java.lang.Thread.run(Thread.java:619)
17-Mar-2011 18:01:15 com.sun.jersey.api.core.WebAppResourceConfig init
INFO: Scanning for root resource and provider classes in the Web app resource paths:
/WEB-INF/lib
/WEB-INF/classes
答案 0 :(得分：0)
提供数据无法说明-your-服务器上是否缺少库。只有你可以验证。
从堆栈跟踪看，至少jersey存在于某处（可能在.war的WEB-INF / lib中，或者.war也运行在Tomcat的lib目录中的完整Java EE AS上）。
由于您声明现有代码使用EJB，因此您还应该在某处使用EJB实现。 Tomcat不支持EJB，因为它只是Servlet container。 OpenEJB将是一种可能的（可能）实现。检查这样的实现是否存在于某处。