问题
I'm trying to implement Simple EJB Application Described in tutorialpoint and I’m using JBoss 5.1 and eclipse as IDE and i created project as EJB 3. but I’m getting the below error
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(NamingManager.java:674)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:307)
at javax.naming.InitialContext.init(InitialContext.java:242)
at javax.naming.InitialContext.<init>(InitialContext.java:216)
at com.tutorialspoint.test.EJBTester.<init>(EJBTester.java:42)
at com.tutorialspoint.test.EJBTester.main(EJBTester.java:51)
Caused by: java.lang.ClassNotFoundException: org.jnp.interfaces.NamingContextFactory
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:274)
at com.sun.naming.internal.VersionHelper12.loadClass(VersionHelper12.java:72)
at com.sun.naming.internal.VersionHelper12.loadClass(VersionHelper12.java:61)
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:671)
... 5 more
java.lang.NullPointerException
at com.tutorialspoint.test.EJBTester.testStatelessEjb(EJBTester.java:65)
at com.tutorialspoint.test.EJBTester.main(EJBTester.java:53)
null
can anyone Guide me on this?
回答1:
You need to add a jar with class org.jnp.interfaces.NamingContextFactory to the classpath in your client code.
You can get it here. Make sure to get the appropriate jar for jboss 5.x if you get a version mismatch error.
来源：https://stackoverflow.com/questions/32901871/javax-naming-noinitialcontextexception-cannot-instantiate-class