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我想在一個tomee maven項目中使用帶有LOG4J2 impl的SLF4J api。因此，我加了我的pom.xml裏面：JUL TO SLF4J在TomEE 1.7.2上使用maven插件
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.12</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jul-to-slf4j</artifactId>
<version>1.7.12</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-slf4j-impl</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.4</version>
</dependency>
我編輯TomEE像這樣的logging.properties文件：
handlers = org.slf4j.bridge.SLF4JBridgeHandler
我嘗試使用此命令的Maven運行我的項目：
mvn package tomee:run
不幸的是我得到了一個例外：
objc[2756]: Class JavaLaunchHelper is implemented in both /Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/bin/java and /Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/libinstrument.dylib. One of the two will be used. Which one is undefined.
Handler error
java.lang.ClassNotFoundException: org.slf4j.bridge.SLF4JBridgeHandler
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)
at org.apache.juli.ClassLoaderLogManager.readConfiguration(ClassLoaderLogManager.java:560)
at org.apache.juli.ClassLoaderLogManager.readConfiguration(ClassLoaderLogManager.java:503)
at org.apache.juli.ClassLoaderLogManager.readConfiguration(ClassLoaderLogManager.java:311)
at java.util.logging.LogManager$3.run(LogManager.java:399)
at java.util.logging.LogManager$3.run(LogManager.java:396)
at java.security.AccessController.doPrivileged(Native Method)
at java.util.logging.LogManager.readPrimordialConfiguration(LogManager.java:396)
at java.util.logging.LogManager.access$800(LogManager.java:145)
at java.util.logging.LogManager$2.run(LogManager.java:345)
at java.security.AccessController.doPrivileged(Native Method)
at java.util.logging.LogManager.ensureLogManagerInitialized(LogManager.java:338)
at java.util.logging.LogManager.getLogManager(LogManager.java:378)
at java.util.logging.Logger.demandLogger(Logger.java:448)
at java.util.logging.Logger.getLogger(Logger.java:502)
at org.apache.juli.logging.DirectJDKLog.<init>(DirectJDKLog.java:71)
at org.apache.juli.logging.DirectJDKLog.getInstance(DirectJDKLog.java:196)
at org.apache.juli.logging.LogFactory.getInstance(LogFactory.java:67)
at org.apache.juli.logging.LogFactory.getInstance(LogFactory.java:93)
at org.apache.juli.logging.LogFactory.getLog(LogFactory.java:102)
at org.apache.catalina.startup.Bootstrap.<clinit>(Bootstrap.java:59)
我嘗試添加依賴關係的lib：
<plugin>
<groupId>org.apache.openejb.maven</groupId>
<artifactId>tomee-maven-plugin</artifactId>
<configuration>
<context>ROOT</context>
<libs>
<li>org.slf4j:slf4j-api:1.7.12</li>
<lib>org.slf4j:jul-to-slf4j:1.7.12</lib>
</libs>
</configuration>
</plugin>
我可以Maven的控制檯中看到：
[INFO] Copied 'org.slf4j:slf4j-api:1.7.12' in '/Users/xxx/Work/Git/xxx/target/apache-tomee/lib/slf4j-api-1.7.12.jar
[INFO] Copied 'org.slf4j:jul-to-slf4j:1.7.12' in '/Users/xxx/Work/Git/xxx/target/apache-tomee/lib/jul-to-slf4j-1.7.12.jar
但我得到了同樣的異常:(
一看07月到裏面後， -slf4j-1.7.12.jar我可以看到org.slf4j.bridge.SLF4JBridgeHandler類文件存在。
我不明白爲什麼tomee找不到它？有沒有可能mac的JDK bug有與此相關的東西？ objc[10012]: Class JavaLaunchHelper is implemented in both ... libinstrument.dylib. One of the two will be used. Which one is undefined
謝謝！