Question

java.lang.NoClassDefFoundError：无法在kafka.utils.Logging $ class.logger（logging。）的org.apache.log4j.Logger.getLogger（Logger.java:39）中初始化类org.apache.log4j.Log4jLoggerFactory。 scala：24）at kafka.consumer.SimpleConsumer.logger $ lzycompute（SimpleConsumer.scala：35）at kafka.consumer.SimpleConsumer.logger（SimpleConsumer.scala：35）at kafka.utils.Logging $ class.info（Logging.scala ：77）at kafka.consumer.SimpleConsumer.info（SimpleConsumer.scala：35）at kafka.consumer.SimpleConsumer.liftedTree1 $ 1（SimpleConsumer.scala：94）at kafka.consumer.SimpleConsumer.kafka $ consumer $ SimpleConsumer $$ sendRequest（ SimpleConsumer.scala：83）at kafka.consumer.SimpleConsumer.getOffsetsBefore（SimpleConsumer.scala：149）at kafka.javaapi.consumer.SimpleConsumer.getOffsetsBefore（SimpleConsumer.scala：79）at org.apache.storm.kafka.KafkaUtils.getOffset （KafkaUtils.java:75）org.apache.storm.kafka.KafkaUtils.getOffset（KafkaUtils.java:65）at org.apache.storm.kafka.PartitionManager。（PartitionManager.java:103）at at org.apache.storm.kafka.ZkCoordinator.refresh(ZkCoordinator.java:98）org.apache.storm.kafka.ZkCoordinator.getMyManagedPartitions(ZkCoordinator.java:69）org.apache.storm.kafka.KafkaSpout.nextTuple（ kafkaSpout.java:129）org.apache.storm.daemon.executor $ fn__7990 $ fn__8005 $ fn__8036.invoke（executor.clj：648）org.apache.storm.util $ async_loop $ fn__624.invoke（util.clj： 484）在java.lang.Thread.run（Thread.java:745）的clojure.lang.AFn.run（AFn.java:22）

Answer 1

尝试将依赖项添加到log4j，但是您需要将它们从storm中排除，以避免我在评论中添加的链接中出现的冲突：

        <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-api</artifactId>
        <version>2.3</version>
    </dependency>
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-core</artifactId>
        <version>2.3</version>
    </dependency>
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-1.2-api</artifactId>
        <version>2.3</version>
    </dependency>
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-jcl</artifactId>
        <version>2.3</version>
    </dependency>
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-slf4j-impl</artifactId>
        <version>2.3</version>
    </dependency>

ava.lang.NoClassDefFoundError：无法初始化类org.apache.log4j.Log4jLoggerFactory这个错误的原因是什么

1 个答案: