log4j2

问题 I have been looking over these three sites on how to create a map lookup (or any other lookup for that matter) using log4j2: http://logging.apache.org/log4j/2.x/manual/extending.html#Lookups http://logging.apache.org/log4j/2.x/manual/lookups.html http://logging.apache.org/log4j/2.x/manual/configuration.html#PropertySubstitution I understand the general idea behind what I am reading, I am just having a difficult time putting all the bits and pieces together. Goal To be able to place a variable

问题 There is a class called Test , which extends from Thread . How do I configure log4j2 so that for each Test thread my own log file is created. I'm trying to do this: public class Test extends Thread { private String name; private Logger LOGGER; public Test(String name) { this.name=name; } @Override public void run() { System.setProperty("taskLogFolder", Global.getInstance().getLogRoot().toString()); System.setProperty("taskLogName", name); LoggerContext loggerContext = Configurator.initialize

问题 I'm trying to change the simple logger that Maven uses by default and change it for Log4j2. I've tried adding the jars of the new logger to the Maven lib but it did not work. Does any one know how to migrate from the simple logger to a newest version of the logger? 回答1: Maven uses SLF4J API to log messages. By default, it uses slf4j-simple implementation. If you want to change this logging implementation, you just need to modify your Maven installation like this: remove the slf4j-simple jar

问题 I am trying to deploy a WAR file to a Glassfish 4.1 server. During an attempt at deployment, I receive the following exception : java.lang.Exception: java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: java.lang.NoSuchMethodError: org.apache.logging.log4j.core.lookup.MapLookup.toMap(Ljava/util/List;)Ljava/util/Map; Looking in the javadoc, I indeed can't see any toMap method ? (https://logging.apache.org/log4j/2.0/log4j-core/apidocs/org

问题 There are other questions about configuring programmatically log4j2, but I coun't find a way to configure the log output encoding? 回答1: I didn't solve it programatically. My solution was to execute the java interpreter with this option: java -Dfile.encoding=utf-8 回答2: In log4j one would do the following, so I assume too for log4j2: Logger hlogger = Logger.getLogger("org.hibernate.stat"); SimpleLayout layout = new SimpleLayout(); ConsoleAppender consoleAppender = new ConsoleAppender(layout);

问题 I am developing a java web-app (v3.0) for a TomCat 7.0 server and I am having troubles loading the log4j2.xm l file. I have defined the log4j2.xml file outside my project and defined the path for the file in my web.xml file. If i hardcode the path my log4j2.xml file loads as it should. <context-param> <param-name>log4jConfiguration</param-name> <param-value>file:///C:/my/path/log4j2.xml</param-value> </context-param> On the other hand I want to use an enviroment variable to define the path.

问题 I have a Spring MVC Web App (4.0) with log4j2. This webapp uses no web.xml and takes care of configuration through Java Config. Log4j2 configuration needs to take place in an external config file, not on the classpath. In a previous incarnation with web.xml we had <context-param> <param-name>log4jConfiguration</param-name> <param-value>file:///path/to/log4j2.xml</param-value> </context-param> and this worked. In the new web.xml-less world, I tried this: public class WebappInitializer extends

问题 Iam migrating my project from log4j 1.2.17 to 2.10.0. I have following file appender configuartion in 1.2.17 properties format. log4j.appender.example=org.apache.log4j.FileAppender log4j.appender.example.file=./target/test-classes/example.log log4j.appender.example.layout=org.apache.log4j.PatternLayout log4j.appender.example.layout.ConversionPattern=%m%n how to configure the above target folder file configuration in log4j2 xml format. Thanks in advance. 回答1: Here is an example configuration

问题 Spring boot ships with several default logging framework configurations including Log4j2. While there is detailed documentation about logging in the Spring boot reference manual it does not mention how and where exactly the default log pattern is configured, which makes it difficult to override this. The question is where does Spring Boot configure the default log pattern of for Log4j2? So far I have looked in the following places of Spring Boot: AutoConfigurationReportLoggingInitializer

问题 Spring boot ships with several default logging framework configurations including Log4j2. While there is detailed documentation about logging in the Spring boot reference manual it does not mention how and where exactly the default log pattern is configured, which makes it difficult to override this. The question is where does Spring Boot configure the default log pattern of for Log4j2? So far I have looked in the following places of Spring Boot: AutoConfigurationReportLoggingInitializer