javax.命名.NameNotFoundException

Question

我正在运行一个使用 JBoss5 容器的 ejb 示例。我正在使用一个例子 from here(Part one) .
在示例中，我在 JBoss 中部署了 bean，在 Tomcat 中部署了一个应用程序(以从 JBoss 访问 bean)。我在 tomcat 服务器的屏幕上收到错误
javax.naming.NameNotFoundException: greetJndi 未绑定(bind)

(greetJndi 是 jboss.xml 文件中的 jndi-name ) 在JBoss中部署有什么特定的目录结构吗？

谢谢

Answer 1

I am getting the error (...) javax.naming.NameNotFoundException: greetJndi not bound

这意味着没有任何内容绑定(bind)到 jndi 名称 greetJndi，很可能是因为部署问题，因为本教程的质量极低(检查服务器日志) .我会回来的。

Is there any specific directory structure to deploy in JBoss?

ejb-jar 的内部结构应该是这样的(使用上述链接中的糟糕的命名约定和默认包):

.
├── greetBean.java
├── greetHome.java
├── greetRemote.java
└── META-INF
    ├── ejb-jar.xml
    └── jboss.xml

But as already mentioned, this tutorial is full of mistakes:

• there is an extra character (<enterprise-beans>] <-- HERE) in the ejb-jar.xml (!)
• a space is missing after PUBLIC in the ejb-jar.xml and jboss.xml (!!)
• the jboss.xml is incorrect, it should contain a session element instead of entity (!!!)

Here is a "fixed" version of the ejb-jar.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
<ejb-jar>
  <enterprise-beans>
    <session>
      <ejb-name>greetBean</ejb-name>
      <home>greetHome</home>
      <remote>greetRemote</remote>
      <ejb-class>greetBean</ejb-class>
      <session-type>Stateless</session-type>
      <transaction-type>Container</transaction-type>
    </session>
  </enterprise-beans>
</ejb-jar>

还有jboss.xml:

<?xml version="1.0"?>
<!DOCTYPE jboss PUBLIC "-//JBoss//DTD JBOSS 3.2//EN" "http://www.jboss.org/j2ee/dtd/jboss_3_2.dtd">
<jboss>
  <enterprise-beans>
    <session>
      <ejb-name>greetBean</ejb-name>
      <jndi-name>greetJndi</jndi-name>
    </session>
  </enterprise-beans>
</jboss>

完成这些更改并重新打包 ejb-jar 后，我能够成功部署它:

21:48:06,512 INFO  [Ejb3DependenciesDeployer] Encountered deployment AbstractVFSDeploymentContext@5060868{vfszip:/home/pascal/opt/jboss-5.1.0.GA/server/default/deploy/greet.jar/}
21:48:06,534 INFO  [EjbDeployer] installing bean: ejb/#greetBean,uid19981448
21:48:06,534 INFO  [EjbDeployer]   with dependencies:
21:48:06,534 INFO  [EjbDeployer]   and supplies:
21:48:06,534 INFO  [EjbDeployer]    jndi:greetJndi
21:48:06,624 INFO  [EjbModule] Deploying greetBean
21:48:06,661 WARN  [EjbModule] EJB configured to bypass security. Please verify if this is intended. Bean=greetBean Deployment=vfszip:/home/pascal/opt/jboss-5.1.0.GA/server/default/deploy/greet.jar/
21:48:06,805 INFO  [ProxyFactory] Bound EJB Home 'greetBean' to jndi 'greetJndi'

该教程需要重大改进；我建议远离 roseindia.net。