运行由shade插件构建的独立应用程序时找不到Log4j2配置

我有应用程序，当我从maven log4j2运行时它正在工作：

mvn exec:java -Dexec.args=... 

但是当我将jar作为独立应用程序运行时，它会显示错误：

 java -jar 

日志：

 ERROR StatusLogger Unrecognized format specifier [d] ERROR StatusLogger Unrecognized conversion specifier [d] starting at position 16 in conversion pattern. ERROR StatusLogger Unrecognized format specifier [thread] ERROR StatusLogger Unrecognized conversion specifier [thread] starting at position 25 in conversion pattern. ERROR StatusLogger Unrecognized format specifier [level] ERROR StatusLogger Unrecognized conversion specifier [level] starting at position 35 in conversion pattern. ERROR StatusLogger Unrecognized format specifier [logger] ERROR StatusLogger Unrecognized conversion specifier [logger] starting at position 47 in conversion pattern. ERROR StatusLogger Unrecognized format specifier [msg] ERROR StatusLogger Unrecognized conversion specifier [msg] starting at position 54 in conversion pattern. ERROR StatusLogger Unrecognized format specifier [n] ERROR StatusLogger Unrecognized conversion specifier [n] starting at position 56 in conversion pattern. ERROR StatusLogger No log4j2 configuration file found. Using default configuration: logging only errors to the console. ERROR StatusLogger Unrecognized format specifier [d] ERROR StatusLogger Unrecognized conversion specifier [d] starting at position 16 in conversion pattern. ERROR StatusLogger Unrecognized format specifier [thread] ERROR StatusLogger Unrecognized conversion specifier [thread] starting at position 25 in conversion pattern. ERROR StatusLogger Unrecognized format specifier [level] ERROR StatusLogger Unrecognized conversion specifier [level] starting at position 35 in conversion pattern. ERROR StatusLogger Unrecognized format specifier [logger] ERROR StatusLogger Unrecognized conversion specifier [logger] starting at position 47 in conversion pattern. ERROR StatusLogger Unrecognized format specifier [msg] ERROR StatusLogger Unrecognized conversion specifier [msg] starting at position 54 in conversion pattern. ERROR StatusLogger Unrecognized format specifier [n] ERROR StatusLogger Unrecognized conversion specifier [n] starting at position 56 in conversion pattern. 

我不明白这个错误。 它显示找不到log4j2配置文件，但也抱怨某些格式可能在配置文件中

我的配置是：

它位于jar文件的根目录下。

UPDATE

jar由maven shade插件创建：

  org.apache.maven.plugins maven-shade-plugin 

所以它包含所有必需的库（大约23 MB），当我运行这个jar时，我只需要指定参数

Answer 1

好的，我发现这个问题。

简而言之，当使用maven shade插件将应用程序类打包在超级jar中时会出现问题。 虽然对于log4j2版本2.8.1 ，修复程序仍处于待定状态，建议的解决方法是使用树荫插件的额外配置设置更新maven pom.xml ，如下所示：

   . . . . .  . . . . .  . . . . .  org.apache.maven.plugins maven-shade-plugin 2.4.1    *:*  META-INF/*.SF META-INF/*.DSA META-INF/*.RSA          package  shade      com.github.edwgiz maven-shade-plugin.log4j2-cachefile-transformer 2.1    . . . . .  . . . . .  . . . . .   oss.sonatype.org OSS Sonatype Staging https://oss.sonatype.org/content/groups/staging   . . . . .  

Answer 2

有关pom.file的完整示例，请参阅此处。

除了@hudi给出的答案之外，我们还需要在插件中添加依赖项以进行转换。

  src/main/java   src/main/resources     org.apache.maven.plugins maven-shade-plugin 2.4.1   package  shade      com.auto.facade.RunMain 123       *:*  META-INF/*.SF META-INF/*.DSA META-INF/*.RSA         com.github.edwgiz maven-shade-plugin.log4j2-cachefile-transformer 2.6.1     maven-compiler-plugin 3.1  1.7 1.7     

Answer 3

  org.apache.maven.plugins maven-shade-plugin 2.4.3   package  shade     *:*  META-INF/*.SF META-INF/*.DSA META-INF/*.RSA    project-name-product-1.0.0-SNAPSHOT   your.main.classname   META-INF/spring.handlers   META-INF/spring.schemas   META-INF/spring.tooling           com.github.edwgiz maven-shade-plugin.log4j2-cachefile-transformer 2.6.1