EJB3方法调用的错误及其处理

在WildFly AS 10上部署EJB服务，在Eclispe中运行单元测试，遇到错误及其解决方法。

异常一：

javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file:  java.naming.factory.initial
	at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:662)
	at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:313)
	at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:350)
	at javax.naming.InitialContext.lookup(InitialContext.java:417)

解决办法：将%WildFly%/bin/jboss-client.jar加入到buildclasspath

异常二：

java.lang.NoSuchMethodError: org.jboss.logging.Logger.getMessageLogger(Ljava/lang/Class;Ljava/lang/String;)Ljava/lang/Object;
	at org.jboss.ejb.client.Logs.<clinit>(Logs.java:53)
	at org.jboss.ejb.client.naming.ejb.EjbNamingContext.createEjbProxy(EjbNamingContext.java:188)
	at org.jboss.ejb.client.naming.ejb.EjbNamingContext.lookup(EjbNamingContext.java:176)
	at javax.naming.InitialContext.lookup(InitialContext.java:417)

运行环境如下：

JDK 1.8

来自WildFly的jboss-client.jar

log4j-1.2.jar

...

经过排查，发现classpath下还有来自JBoss AS的jbossall-client.jar，该文件中包含了过时org.jboss.logging.Logger类，导致异常。

将其从classpath中删除即可。

异常三：

javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file:  java.naming.factory.initial
	at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:662)
	at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:313)
	at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:350)
	at javax.naming.InitialContext.lookup(InitialContext.java:417)

解决办法：JNDI名称必须以"ejb:..."的形式，如 " ejb: EthernetPM/EthernetPMEJB/EthernetPMServiceBean!com.jdsu.netcomplete.service.ethernetpm.EthernetPMServiceRemote"

异常四：

java.lang.IllegalStateException: EJBCLIENT000025: No EJB receiver available for handling [appName:CustomView, moduleName:SecurityDelegateEJB, distinctName:] combination for invocation context org.jboss.ejb.client.EJBClientInvocationContext@12e5a8e
	at org.jboss.ejb.client.EJBClientContext.requireEJBReceiver(EJBClientContext.java:798)
	at org.jboss.ejb.client.ReceiverInterceptor.handleInvocation(ReceiverInterceptor.java:116)
	at org.jboss.ejb.client.EJBClientInvocationContext.sendRequest(EJBClientInvocationContext.java:186)
	at org.jboss.ejb.client.EJBInvocationHandler.sendRequestWithPossibleRetries(EJBInvocationHandler.java:255)
	at org.jboss.ejb.client.EJBInvocationHandler.doInvoke(EJBInvocationHandler.java:200)
	at org.jboss.ejb.client.EJBInvocationHandler.doInvoke(EJBInvocationHandler.java:183)
	at org.jboss.ejb.client.EJBInvocationHandler.invoke(EJBInvocationHandler.java:146)

这是EJB调用的经典问题，常常被遇到，常常被忽略。
解决办法：务必将jboss-ejb-client.properties文件加入到classpath