获取异常org.apache.logging.slf4j.SLF4JLoggerContext无法强制转换为org.apache.logging.log4j.core.LoggerContext [英] Getting Exception org.apache.logging.slf4j.SLF4JLoggerContext cannot be cast to org.apache.logging.log4j.core.LoggerContext

问题描述

使用apache-log4j-2.0.2我的代码非常简单：

My code is very simple using apache-log4j-2.0.2:

import org.apache.log4j.BasicConfigurator;
import org.apache.log4j.Logger;

public class Log4jtest {
  static Logger log =Logger.getLogger(Log4jtest.class);
  public static void main(String[] args) {
    BasicConfigurator.configure();
        log.debug("This is debug message");
  }

}

但我得到的例外就像：

Exception in thread "main" java.lang.ExceptionInInitializerError
Caused by: java.lang.ClassCastException: org.apache.logging.slf4j.SLF4JLoggerContext cannot be          cast to org.apache.logging.log4j.core.LoggerContext``
at org.apache.log4j.Logger.getLogger(Logger.java:41)
at Log4jtest.<clinit>(Log4jtest.java:11)

为什么异常来自简单程序？

Why is the exception coming from a simple program?

推荐答案

从类路径中删除jar以下它应该解决问题 -

Remove below jar's from class path and it should fix the issue -

log4j-to-slf4j-2.0.2.jar
log4j-to-slf4j-2.0.2-sources.jar
log4j-slf4j-impl-2.0.2.jar
log4j-slf4j-impl-2.0.2-sources.jar

下载
apache-log4j-2.0.2后，我能够复制并解决问题来自
http：/ /www.apache.org/dyn/closer.cgi/logging/log4j/2.0.2/apache-log4j-2.0.2-bin.zip 。

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