无法使用 JBoss 服务器实例化 InitialContext [英] Cannot instantiate InitialContext with JBoss server

问题描述

我正在尝试创建一个 InitialContext 以便我可以向 JNDI 询问一些企业 Java bean.JBoss 运行良好，但是当我运行 java 代码时出现异常.

I'm trying to create a InitialContext so I could ask the JNDI for some enterprise java beans. The JBoss is running fine, but when I run the java code I get an exception.

我正在运行 JBoss 7.1

I'm running JBoss 7.1

这是我的代码:

public class Test {

    public static void main(String[] args){
        InitialContext ctx=getInitialContext();
        Object ref=null;
        try {
            ref = ctx.lookup("ParamEJB/remote");
        } catch (NamingException e) {
            System.out.println("Lookup Failed");
            e.printStackTrace();
        }
        Param stub=(Param)PortableRemoteObject.narrow(ref, Param.class);
        int times=stub.getTimes();
        for(int i=0;i<times;i++)
            System.out.println(stub.getMessage());
    }

    public static InitialContext getInitialContext(){
        Hashtable<String,String> h=new Hashtable<String,String>();
        h.put("java.naming.factory.initial","org.jnp.interfaces.NamingContextFactory");
        h.put("java.naming.provider.url","localhost");
        try {
            return new InitialContext(h);
        } catch (NamingException e) {
            System.out.println("Cannot generate InitialContext");
            e.printStackTrace();
        }
        return null;
    }
    }

在我启动 JBoss 服务器后，我尝试运行 java 代码，但出现此异常:

And after i start my JBoss server, I try to run the java code and I get this exception:

javax.naming.NoInitialContextException: Cannot instantiate class:     org.jnp.interfaces.NamingContextFactory [Root exception is java.lang.ClassNotFoundException:     org.jnp.interfaces.NamingContextFactory]
at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)
at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)
at javax.naming.InitialContext.init(Unknown Source)
at javax.naming.InitialContext.<init>(Unknown Source)
at client.Test.getInitialContext(Test.java:32)
at client.Test.main(Test.java:13)
Caused by: java.lang.ClassNotFoundException: org.jnp.interfaces.NamingContextFactory
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)

可能是什么问题?

推荐答案

InitialContext 属性不适合您使用的 JBoss 版本.使用 JBoss 7，当您从远程客户端调用 ejb 时，情况发生了很大变化.这个链接可以帮助你正确实例化InitialContex 对象并确定 JNDI 条目名称.还会告诉您需要添加到客户端类路径中的必要依赖项是什么.

The InitialContext properties are not right for the JBoss version that you are using. With JBoss 7, things have changed considerably when you call a ejb from a remote client. This link can help you to instantiate correctly the InitialContex object and to determine the JNDI entry name. Also will tell you what are the necessary dependencies that need to be added to the client classpath.

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