申领电子发票显示ejb初始化时失败怎么办
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导致EJB常见错误原因：
一 、Exception in thread "main" java.lang.NoClassDefFoundError: [Lorg/jboss/aop/advice/Interceptor;
at java.lang.Class.getDeclaredFields0(Native Method)
at java.lang.Class.privateGetDeclaredFields(Unknown Source)
如果出想这种异常，要在测试项目中导入jboss-aop-jdk50.jar
(E:jboss420serverdefaultdeployjboss-aop-jdk50.deployerjboss-aop-jdk50.jar)包
二、javax.naming.CommunicationException [Root exception is java.lang.ClassNotFoundException: org.jboss.ejb3.JBossProxy (no security manager: RMI class loader disabled)]
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:713)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:572)
at javax.naming.InitialContext.lookup(Unknown Source)
at test.stateless.TestStateless.main(TestStateless.java:20)
出现这种异常，要导入jboss-ejb3.jar
(E:jboss420serverdefaultdeployejb3.deployerjboss-ejb3.jar)包
三、Exception in thread "main" java.lang.NoClassDefFoundError: Lorg/jboss/remoting/InvokerLocator;
at java.lang.Class.getDeclaredFields0(Native Method)
at java.lang.Class.privateGetDeclaredFields(Unknown Source)
at java.lang.Class.getDeclaredField(Unknown Source)
at java.io.ObjectStreamClass.getDeclaredSUID(Unknown Source)
at java.io.ObjectStreamClass.access$700(Unknown Source)
at java.io.ObjectStreamClass$2.run(Unknown Source)
出现这种异常，要导入jboss-remoting.jar
(E:jboss420serverdefaultlibjboss-remoting.jar)包
四、Exception in thread "main" java.lang.NoClassDefFoundError: org/jboss/aspects/asynch/AsynchProvider
at java.lang.Class.getDeclaredFields0(Native Method)
at java.lang.Class.privateGetDeclaredFields(Unknown Source)
at java.lang.Class.getDeclaredField(Unknown Source)
这种情况是缺少jboss-aspect-library-jdk50.jar
(E:jboss420serverdefaultdeployjboss-aop-jdk50.deployerjboss-aspect-library-jdk50.jar)包
五、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 test.stateless.TestStateless.main(TestStateless.java:18)
出现这种情况是因为缺少jbossall-client.jar
(E:jboss420clientjbossall-client.jar)包
这5个包是必不可少的
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