Question

我正在努力遵循编程。这里提到http://examples.sencha.com/extjs/6.2.0/examples/kitchensink/#all但是通过log4j.properties文件检索队列，主机，端口等细节，下面是log4j.properties`中的条目

     log4j.appender.JMS = com.log4j.Log4j_HelloWorld
        log4j.appender.JMS.HostName=MQEEQS.ABC.COM
        log4j.appender.JMS.Port=1414
        log4j.appender.JMS.QueueManager=MQEEQS
        log4j.appender.JMS.Channel=CLIENT.TO.MQEEQS
        log4j.appender.JMS.QueueName=QA.M01.MR.NOTIFICATION.FEED.DEV

使用property.getProperty在我的java类 Log4j_HelloWorld 中获取这些属性，但在将其作为java应用程序运行时，我在控制台中收到以下错误 -

log4j:ERROR A "com.log4j.Log4j_HelloWorld" object is not assignable to a "org.apache.log4j.Appender" variable.
log4j:ERROR The class "org.apache.log4j.Appender" was loaded by 
log4j:ERROR [sun.misc.Launcher$AppClassLoader@1a5d08] whereas object of type 
log4j:ERROR "com.log4j.Log4j_HelloWorld" was loaded by [sun.misc.Launcher$AppClassLoader@1a5d08].
log4j:ERROR Could not instantiate appender named "JMS".
java.io.FileNotFoundException: log4j.properties (The system cannot find the file specified)
\nFAILURE\n

Answer 1

是你的com.log4j.Log4j_HelloWorld实现了Appender接口

大多数情况下，我们派生自AppenderSkeleton

错误：我的java类对象不能分配给“org.apache.log4j.Appender”变量

1 个答案: