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vertx:log4j [2021/12/28 17:00]
alex 		vertx:log4j [2022/01/08 06:20]
162.158.183.238 old revision restored (2022/01/08 05:38)
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-** note that this article is outdated as it refers to vert.x 2 ** 
- 
- 
 ==== How to use vert.x logging with Log4j and slf4j ==== ==== How to use vert.x logging with Log4j and slf4j ====
  
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 I personally usually use slf4j and log4j as backend for development (and simple logger for live systems, though I do not really have much of "live" things since we use other tools on my work projects), when running inside Eclipse, logback may be a good idea, somebody suggested log4j2 on the group. I personally usually use slf4j and log4j as backend for development (and simple logger for live systems, though I do not really have much of "live" things since we use other tools on my work projects), when running inside Eclipse, logback may be a good idea, somebody suggested log4j2 on the group.
  
 +=== Running in maven ===
 +
 +     mvn package vertx:runMod -Dorg.vertx.logger-delegate-factory-class-name=org.vertx.java.core.logging.impl.Lo
 +g4jLogDelegateFactory -Dlog4j.ignoreTCL=true
 +
 +should work around an problem in maven causes an error
  
 +log4j:ERROR A "org.apache.log4j.ConsoleAppender" object is not assignable to a "org.apache.log4j.Appender" variable.
 +log4j:ERROR The class "org.apache.log4j.Appender" was loaded by
 +log4j:ERROR [ClassRealm[plugin>io.vertx:vertx-maven-plugin:2.0.5-final, parent: [email protected]]] whereas object of type
 +log4j:ERROR "org.apache.log4j.ConsoleAppender" was loaded by [[email protected]a18817].
 +log4j:ERROR Could not instantiate appender named "stdout".