Question

我已经从LDAP服务器成功注册并检索了连接工厂对象。但是当我尝试从LDAP服务器查找队列时，它给出了NPE。我在ApacheDS上使用OracleAQ ..

我的代码是;

DirContext destctxQF = (DirContext) inictx.lookup("cn=OracleDBQueues");    
System.out.println("OracleDBQueues look up success " +  destctxQF.toString());
Queue queue = (Queue) destctxQF.lookup("cn=ratha.test");

我对队列的LDIF定义是;

dn: cn=ratha.test,cn=OracleDBQueues,cn=ORCL,cn=OracleContext,ou=Services,o=s
 gi,c=us
objectClass: javaContainer
objectClass: orclDBAQObject
objectClass: javaNamingReference
objectClass: javaObject
objectClass: top
cn: ratha.test
javaClassName: oracle.jms.AQjmsDestination
orcldbaqobjtype: Queue
javaFactory: oracle.jms.AQjmsDestinationFactory
orcldbaqobjname: test
orcldbaqobjowner: ratha
orcldbaqpointerattr: cn=ratha.test_table,cn=OracleDBQueuesTables,cn=ORCL,cn=
 OracleContext,ou=Services,o=sgi,c=us

有什么线索吗？完整的错误堆栈是;

javax.naming.NamingException: problem generating object using object factory [Root exception is java.lang.NullPointerException]; remaining name 'cn=ratha.test'
    at com.sun.jndi.ldap.LdapCtx.c_lookup(LdapCtx.java:1070)
    at com.sun.jndi.toolkit.ctx.ComponentContext.p_lookup(ComponentContext.java:526)
    at com.sun.jndi.toolkit.ctx.PartialCompositeContext.lookup(PartialCompositeContext.java:159)
    at com.sun.jndi.toolkit.ctx.PartialCompositeContext.lookup(PartialCompositeContext.java:148)
    at OracleAQJNDIClient.get_Factory_from_LDAP(OracleAQJNDIClient.java:93)
    at OracleAQJNDIClient.main(OracleAQJNDIClient.java:142)
Caused by: java.lang.NullPointerException
    at oracle.jms.AQjmsDestinationFactory.getObjectInstance(AQjmsDestinationFactory.java:120)
    at javax.naming.spi.DirectoryManager.getObjectInstance(DirectoryManager.java:176)
    at com.sun.jndi.ldap.LdapCtx.c_lookup(LdapCtx.java:1063)
    ... 5 more

谢谢， -Ratha

在LDAP中查找队列时，JNDI查找会给出“NullPointerException”

0 个答案: