我把我的项目从eclipse转移到了netbeans,当我在构建.jar文件后尝试运行它时,我现在收到了Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
错误
以下是我的类路径中的内容:
slf4j-api-1.7.11.jar
slf4j-ext-1.7.11.jar
log4j-1.2.17.jar
这是我的记录器:
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class Log {
public static final Logger logger = LoggerFactory.getLogger(Log.class);
public Log(){
}
}
log4j.properties:
# Root logger option
log4j.rootLogger=INFO, file
# Direct log messages to a log file
log4j.appender.file=org.apache.log4j.RollingFileAppender
#Redirect to Tomcat logs folder
#log4j.appender.file.File=${catalina.home}/logs/logging.log
log4j.appender.file.File=C:\Log.log
log4j.appender.file.MaxFileSize=10MB
log4j.appender.file.MaxBackupIndex=10
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
当我想记录一些东西时,我会调用什么(这就是它爆炸并抛出错误的地方):
Log.logger.info("");
例外:
Picked up _JAVA_OPTIONS: -Djava.net.preferIPv4Stack=true
Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
at com.xxx.xxxx.Log.<clinit>(Log.java:8)
at com.xxx.xxxx.MainGui.PrintHeaderForLog(MainGui.java:319)
at com.xxx.xxxx.MainGui.<init>(MainGui.java:69)
at com.xxx.xxxx.MainGui.<clinit>(MainGui.java:48)
Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 4 more
可能由于某种原因,slf4j.jar没有加载。您可以包含一些jar到类路径:
- slf4j-log4j12
- slf4j简单。。毕竟,清理你的项目并运行。它将成功运行
如果您在启动Tomcat服务器时得到"java.lang.NoClassDefFoundError:Lorg/slf4j/Logger"
- 那么要么你没有正确复制共享的tomcat,要么
- "apachetomcat/conf/catalina.properties"文件存在问题
解决方案
- 下载新的Apache tomcat服务器并使用它
- 删除现有服务器,从下载中复制服务器,然后将其再次粘贴到同一位置并使用