Glassfish錯誤：NameNotFoundException，因此servlet無法注入EJB

Question

EJB ConverterBean位置和位置應該如何，以便ConverterServlet可以注入EJB？ 才不是：

“ ..使用Java EE 6和更高版本，您只需將所有類放入WAR文件中”

當然，我正在閱讀有關此主題的Java EE 7教程。

來自瀏覽器的InjectionException ：

HTTP Status 500 - Internal Server Error

type Exception report

messageInternal Server Error

descriptionThe server encountered an internal error that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Error instantiating servlet class net.bounceme.dur.servlets.ConverterServlet

root cause

com.sun.enterprise.container.common.spi.util.InjectionException: Error creating managed object for class: class net.bounceme.dur.servlets.ConverterServlet

root cause

java.lang.IllegalStateException: Exception attempting to inject Remote ejb-ref name=net.bounceme.dur.servlets.ConverterServlet/converter,Remote 3.x interface =net.bounceme.dur.ejb.ConverterBean,ejb-link=null,lookup=,mappedName=,jndi-name=net.bounceme.dur.ejb.ConverterBean,refType=Session into class net.bounceme.dur.servlets.ConverterServlet: Lookup failed for 'java:comp/env/net.bounceme.dur.servlets.ConverterServlet/converter' in SerialContext[myEnv={java.naming.factory.initial=com.sun.enterprise.naming.impl.SerialInitContextFactory, java.naming.factory.state=com.sun.corba.ee.impl.presentation.rmi.JNDIStateFactoryImpl, java.naming.factory.url.pkgs=com.sun.enterprise.naming}

root cause

com.sun.enterprise.container.common.spi.util.InjectionException: Exception attempting to inject Remote ejb-ref name=net.bounceme.dur.servlets.ConverterServlet/converter,Remote 3.x interface =net.bounceme.dur.ejb.ConverterBean,ejb-link=null,lookup=,mappedName=,jndi-name=net.bounceme.dur.ejb.ConverterBean,refType=Session into class net.bounceme.dur.servlets.ConverterServlet: Lookup failed for 'java:comp/env/net.bounceme.dur.servlets.ConverterServlet/converter' in SerialContext[myEnv={java.naming.factory.initial=com.sun.enterprise.naming.impl.SerialInitContextFactory, java.naming.factory.state=com.sun.corba.ee.impl.presentation.rmi.JNDIStateFactoryImpl, java.naming.factory.url.pkgs=com.sun.enterprise.naming}

root cause

javax.naming.NamingException: Lookup failed for 'java:comp/env/net.bounceme.dur.servlets.ConverterServlet/converter' in SerialContext[myEnv={java.naming.factory.initial=com.sun.enterprise.naming.impl.SerialInitContextFactory, java.naming.factory.state=com.sun.corba.ee.impl.presentation.rmi.JNDIStateFactoryImpl, java.naming.factory.url.pkgs=com.sun.enterprise.naming} [Root exception is javax.naming.NamingException: Exception resolving Ejb for 'Remote ejb-ref name=net.bounceme.dur.servlets.ConverterServlet/converter,Remote 3.x interface =net.bounceme.dur.ejb.ConverterBean,ejb-link=null,lookup=,mappedName=,jndi-name=net.bounceme.dur.ejb.ConverterBean,refType=Session' .  Actual (possibly internal) Remote JNDI name used for lookup is 'net.bounceme.dur.ejb.ConverterBean#net.bounceme.dur.ejb.ConverterBean' [Root exception is javax.naming.NamingException: Lookup failed for 'net.bounceme.dur.ejb.ConverterBean#net.bounceme.dur.ejb.ConverterBean' in SerialContext[myEnv={java.naming.factory.initial=com.sun.enterprise.naming.impl.SerialInitContextFactory, java.naming.factory.state=com.sun.corba.ee.impl.presentation.rmi.JNDIStateFactoryImpl, java.naming.factory.url.pkgs=com.sun.enterprise.naming} [Root exception is javax.naming.NameNotFoundException: net.bounceme.dur.ejb.ConverterBean#net.bounceme.dur.ejb.ConverterBean not found]]]

root cause

javax.naming.NamingException: Exception resolving Ejb for 'Remote ejb-ref name=net.bounceme.dur.servlets.ConverterServlet/converter,Remote 3.x interface =net.bounceme.dur.ejb.ConverterBean,ejb-link=null,lookup=,mappedName=,jndi-name=net.bounceme.dur.ejb.ConverterBean,refType=Session' .  Actual (possibly internal) Remote JNDI name used for lookup is 'net.bounceme.dur.ejb.ConverterBean#net.bounceme.dur.ejb.ConverterBean' [Root exception is javax.naming.NamingException: Lookup failed for 'net.bounceme.dur.ejb.ConverterBean#net.bounceme.dur.ejb.ConverterBean' in SerialContext[myEnv={java.naming.factory.initial=com.sun.enterprise.naming.impl.SerialInitContextFactory, java.naming.factory.state=com.sun.corba.ee.impl.presentation.rmi.JNDIStateFactoryImpl, java.naming.factory.url.pkgs=com.sun.enterprise.naming} [Root exception is javax.naming.NameNotFoundException: net.bounceme.dur.ejb.ConverterBean#net.bounceme.dur.ejb.ConverterBean not found]]

root cause

javax.naming.NamingException: Lookup failed for 'net.bounceme.dur.ejb.ConverterBean#net.bounceme.dur.ejb.ConverterBean' in SerialContext[myEnv={java.naming.factory.initial=com.sun.enterprise.naming.impl.SerialInitContextFactory, java.naming.factory.state=com.sun.corba.ee.impl.presentation.rmi.JNDIStateFactoryImpl, java.naming.factory.url.pkgs=com.sun.enterprise.naming} [Root exception is javax.naming.NameNotFoundException: net.bounceme.dur.ejb.ConverterBean#net.bounceme.dur.ejb.ConverterBean not found]

root cause

javax.naming.NameNotFoundException: net.bounceme.dur.ejb.ConverterBean#net.bounceme.dur.ejb.ConverterBean not found

note The full stack traces of the exception and its root causes are available in the GlassFish Server Open Source Edition 4.1.1 logs.
GlassFish Server Open Source Edition 4.1.1 

從部署到NameNotFoundException的Glassfish日志的tail -f摘錄：

[2017-04-18T23:23:53.687-0700] [glassfish 4.1] [INFO] [] [javax.enterprise.system.tools.deployment.common] [tid: _ThreadID=154 _ThreadName=admin-listener(8)] [timeMillis: 1492583033687] [levelValue: 800] [[
  visiting unvisited references]]

[2017-04-18T23:23:53.709-0700] [glassfish 4.1] [INFO] [] [javax.enterprise.system.tools.deployment.common] [tid: _ThreadID=154 _ThreadName=admin-listener(8)] [timeMillis: 1492583033709] [levelValue: 800] [[
  visiting unvisited references]]

[2017-04-18T23:23:53.719-0700] [glassfish 4.1] [INFO] [] [javax.enterprise.system.tools.deployment.common] [tid: _ThreadID=154 _ThreadName=admin-listener(8)] [timeMillis: 1492583033719] [levelValue: 800] [[
  visiting unvisited references]]

[2017-04-18T23:23:53.725-0700] [glassfish 4.1] [INFO] [] [javax.enterprise.system.tools.deployment.common] [tid: _ThreadID=154 _ThreadName=admin-listener(8)] [timeMillis: 1492583033725] [levelValue: 800] [[
  visiting unvisited references]]

[2017-04-18T23:23:53.757-0700] [glassfish 4.1] [INFO] [AS-EJB-00054] [javax.enterprise.ejb.container] [tid: _ThreadID=154 _ThreadName=admin-listener(8)] [timeMillis: 1492583033757] [levelValue: 800] [[
  Portable JNDI names for EJB ConverterBean: [java:global/ConverterWebAppicationArchiveWithEJB/ConverterBean, java:global/ConverterWebAppicationArchiveWithEJB/ConverterBean!net.bounceme.dur.ejb.ConverterBeanLocal]]]

[2017-04-18T23:23:53.787-0700] [glassfish 4.1] [WARN] [] [org.jboss.weld.Event] [tid: _ThreadID=154 _ThreadName=admin-listener(8)] [timeMillis: 1492583033787] [levelValue: 900] [[
  WELD-000411: Observer method [BackedAnnotatedMethod] public org.glassfish.jms.injection.JMSCDIExtension.processAnnotatedType(@Observes ProcessAnnotatedType<Object>) receives events for all annotated types. Consider restricting events using @WithAnnotations or a generic type with bounds.]]

[2017-04-18T23:23:53.795-0700] [glassfish 4.1] [WARN] [] [org.jboss.weld.Event] [tid: _ThreadID=154 _ThreadName=admin-listener(8)] [timeMillis: 1492583033795] [levelValue: 900] [[
  WELD-000411: Observer method [BackedAnnotatedMethod] private org.glassfish.jersey.ext.cdi1x.internal.CdiComponentProvider.processAnnotatedType(@Observes ProcessAnnotatedType<Object>) receives events for all annotated types. Consider restricting events using @WithAnnotations or a generic type with bounds.]]

[2017-04-18T23:23:53.799-0700] [glassfish 4.1] [WARN] [] [org.jboss.weld.Event] [tid: _ThreadID=154 _ThreadName=admin-listener(8)] [timeMillis: 1492583033799] [levelValue: 900] [[
  WELD-000411: Observer method [BackedAnnotatedMethod] org.glassfish.sse.impl.ServerSentEventCdiExtension.processAnnotatedType(@Observes ProcessAnnotatedType<Object>, BeanManager) receives events for all annotated types. Consider restricting events using @WithAnnotations or a generic type with bounds.]]

[2017-04-18T23:23:53.966-0700] [glassfish 4.1] [INFO] [AS-WEB-GLUE-00172] [javax.enterprise.web] [tid: _ThreadID=154 _ThreadName=admin-listener(8)] [timeMillis: 1492583033966] [levelValue: 800] [[
  Loading application [ConverterWebAppicationArchiveWithEJB] at [/ConverterWebAppicationArchiveWithEJB]]]

[2017-04-18T23:23:53.976-0700] [glassfish 4.1] [INFO] [] [javax.enterprise.system.core] [tid: _ThreadID=154 _ThreadName=admin-listener(8)] [timeMillis: 1492583033976] [levelValue: 800] [[
  ConverterWebAppicationArchiveWithEJB was successfully deployed in 294 milliseconds.]]

[2017-04-18T23:23:54.263-0700] [glassfish 4.1] [INFO] [] [javax.enterprise.web] [tid: _ThreadID=95 _ThreadName=http-listener-1(3)] [timeMillis: 1492583034263] [levelValue: 800] [[
  WebModule[null] ServletContext.log():Marking servlet net.bounceme.dur.servlets.ConverterServlet as unavailable]]

[2017-04-18T23:23:54.272-0700] [glassfish 4.1] [WARNING] [] [javax.enterprise.web] [tid: _ThreadID=95 _ThreadName=http-listener-1(3)] [timeMillis: 1492583034272] [levelValue: 900] [[
  StandardWrapperValve[net.bounceme.dur.servlets.ConverterServlet]: Allocate exception for servlet net.bounceme.dur.servlets.ConverterServlet
javax.naming.NameNotFoundException: net.bounceme.dur.ejb.ConverterBean#net.bounceme.dur.ejb.ConverterBean not found
    at com.sun.enterprise.naming.impl.TransientContext.doLookup(TransientContext.java:237)
    at com.sun.enterprise.naming.impl.TransientContext.lookup(TransientContext.java:204)
    at com.sun.enterprise.naming.impl.SerialContextProviderImpl.lookup(SerialContextProviderImpl.java:66)
    at com.sun.enterprise.naming.impl.LocalSerialContextProviderImpl.lookup(LocalSerialContextProviderImpl.java:114)
    at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:478)
    at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:438)
    at javax.naming.InitialContext.lookup(InitialContext.java:417)
    at javax.naming.InitialContext.lookup(InitialContext.java:417)
    at com.sun.ejb.EjbNamingReferenceManagerImpl.resolveEjbReference(EjbNamingReferenceManagerImpl.java:183)
    at com.sun.enterprise.container.common.impl.ComponentEnvManagerImpl$EjbReferenceProxy.create(ComponentEnvManagerImpl.java:1015)
    at com.sun.enterprise.naming.impl.GlassfishNamingManagerImpl.lookup(GlassfishNamingManagerImpl.java:745)
    at com.sun.enterprise.naming.impl.GlassfishNamingManagerImpl.lookup(GlassfishNamingManagerImpl.java:715)
    at com.sun.enterprise.naming.impl.JavaURLContext.lookup(JavaURLContext.java:159)
    at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:471)
    at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:438)
    at javax.naming.InitialContext.lookup(InitialContext.java:417)
    at javax.naming.InitialContext.lookup(InitialContext.java:417)
    at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl._inject(InjectionManagerImpl.java:636)
    at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl.inject(InjectionManagerImpl.java:507)
    at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl.injectInstance(InjectionManagerImpl.java:170)
    at org.glassfish.weld.services.InjectionServicesImpl.aroundInject(InjectionServicesImpl.java:165)
    at org.jboss.weld.injection.InjectionContextImpl.run(InjectionContextImpl.java:46)
    at org.jboss.weld.injection.producer.ResourceInjector.inject(ResourceInjector.java:72)
    at org.jboss.weld.injection.producer.BasicInjectionTarget.inject(BasicInjectionTarget.java:121)
    at org.glassfish.weld.services.JCDIServiceImpl.createManagedObject(JCDIServiceImpl.java:336)
    at org.glassfish.weld.services.JCDIServiceImpl.createManagedObject(JCDIServiceImpl.java:263)
    at com.sun.enterprise.container.common.impl.managedbean.ManagedBeanManagerImpl.createManagedBean(ManagedBeanManagerImpl.java:485)
    at com.sun.enterprise.container.common.impl.managedbean.ManagedBeanManagerImpl.createManagedBean(ManagedBeanManagerImpl.java:439)
    at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl.createManagedObject(InjectionManagerImpl.java:336)
    at com.sun.enterprise.web.WebContainer.createServletInstance(WebContainer.java:991)
    at com.sun.enterprise.web.WebModule.createServletInstance(WebModule.java:2130)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1404)
    at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:1211)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:237)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:416)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:283)
    at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:206)
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:180)
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:283)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:200)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:132)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:111)
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:536)
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:591)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:571)
    at java.lang.Thread.run(Thread.java:745)
]]

servlet嘗試注入ConverterBean ：

package net.bounceme.dur.servlets;

import java.io.IOException;
import java.io.PrintWriter;
import java.math.BigDecimal;
import javax.ejb.EJB;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import net.bounceme.dur.ejb.ConverterBean;

@WebServlet("/converter")
public class ConverterServlet extends HttpServlet {

    @EJB
    ConverterBean converter;

    protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        response.setContentType("text/html;charset=UTF-8");
        // converter = new ConverterBean();
        try (PrintWriter out = response.getWriter()) {
            /* TODO output your page here. You may use following sample code. */
            out.println("<!DOCTYPE html>");
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet ConverterServlet</title>");
            out.println("</head>");
            out.println("<body>");

            out.println("what is the amount?");
            out.println("<h1>Servlet ConverterServlet at " + request.getContextPath() + "</h1>");

            String stringAmount = "999";
            out.println("amount is " + stringAmount);
            out.println("<p>");
            BigDecimal dollars = new BigDecimal(stringAmount);
            out.println("dollars:\t" + dollars + "\t" + dollars.getClass());
            out.println("<p>");

            //   BigDecimal yen = converter.dollarToYen(dollars);
            //   BigDecimal euros = converter.yenToEuro(yen);
            out.println("never executed..");
            out.println("yen");
            //    out.println(yen);
            out.println("<p>");
            out.println("euros");
            //    out.println(euros);
            out.println("<p>");

            out.println("</body>");
            out.println("</html>");

        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}

項目的tree結構：

.
├── build.xml
├── nbproject
│   ├── ant-deploy.xml
│   ├── build-impl.xml
│   ├── genfiles.properties
│   ├── private
│   │   └── private.properties
│   ├── project.properties
│   └── project.xml
├── src
│   ├── conf
│   │   └── MANIFEST.MF
│   └── java
│       └── net
│           └── bounceme
│               └── dur
│                   ├── ejb
│                   │   ├── ConverterBean.java
│                   │   ├── ConverterBeanLocal.java
│                   │   └── PropertiesReader.java
│                   └── servlets
│                       └── ConverterServlet.java
├── test
└── web
    ├── index.html
    └── WEB-INF
        └── web.xml

13 directories, 14 files

我也嘗試將servlet和ConverterBean放在同一包中。

Answer 1

您似乎已經為ConverterBean定義了一個本地接口，稱為ConverterBeanLocal 。

因此，您將需要在注入點使用它：

@WebServlet("/converter")
public class ConverterServlet extends HttpServlet {

    @EJB
    ConverterBeanLocal converter;

或者，您可以完全擺脫ConverterBeanLocal接口，並使代碼更簡單。