我正在尝试运行使用Logger类的项目。尝试这样做会导致下面的例外。编译器正在org / slf4j / Logger中查找Logger但是在我的库中它位于org / apache / log4j(我正在使用IntelliJ)。我该如何解决这个问题?
Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/Logger
at org.apache.logging.slf4j.SLF4JLoggerContext.getLogger(SLF4JLoggerContext.java:42)
at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:455)
at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:441)
at activitystreamer.Client.<clinit>(Client.java:17)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:123)
Caused by: java.lang.ClassNotFoundException: org.slf4j.Logger
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 7 more
答案 0 :(得分:0)
您错过了添加SLF4J。要将SLF4j添加到项目中,首先要在SLF4j API中添加。查看https://www.slf4j.org/docs.html了解更多详情。