slf4j

问题 My question is, why am I able to pull dependencies from some, but not all, of the public ivy repos? I am using an ant build.xml script to call the ivy:retrieve command. Here is the relevant line from my ivy.xml file, where I have removed all of the other dependencies for clarity: <dependencies> <dependency org="log4j" name="log4j" rev="1.2.16"/> </dependencies> which is being pulled from a public repository given in my ivysettings.xml file <!-- General public repository !--> <ibiblio name=

问题 I'm using the SimpleLogger binding for SLF4J 1.7.5. As per the docs I can use the org.slf4j.simpleLogger.logFile property in my simplelogger.properties file to specify a log file OR System.out OR System.err. However I want to send log messages to BOTH System.out AND a log file. Does anyone know how to achieve this using SimpleLogger please? (I'm using Windows so cannot use tail -f simply to follow the log file in a console window; nor do I want to get a third party utility which emulates

问题 I'm using the SimpleLogger binding for SLF4J 1.7.5. As per the docs I can use the org.slf4j.simpleLogger.logFile property in my simplelogger.properties file to specify a log file OR System.out OR System.err. However I want to send log messages to BOTH System.out AND a log file. Does anyone know how to achieve this using SimpleLogger please? (I'm using Windows so cannot use tail -f simply to follow the log file in a console window; nor do I want to get a third party utility which emulates

问题 I want to use slf4j with logback for logging. You can see my logback.xml below: <configuration> <appender name="FILE-MODULE" class="ch.qos.logback.core.FileAppender"> <file>module.log</file> <encoder> <pattern> %date %level [%thread] %logger{10} [%file:%line] %msg%n </pattern> </encoder> </appender> <logger name="module" level="debug" additivity="false"> <appender-ref ref="FILE-MODULE" /> </logger> </configuration> The problem is: when I deploy my application to Tomcat, log file is stored in

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 2 years ago . I spark-submit jobs on an Amazon EMR cluster. I'd like all spark logging to be sent to redis/logstash. What is the proper way to configure spark under EMR to do this? Keep log4j: Add a bootstrap action to modify /home/hadoop/spark/conf/log4j.properties to add an appender? However, this file already contains a

问题 I am using logback for my logging and it has been working however; the other day I started getting a warning log4j:WARN No appenders could be found for logger (org.apache.axis.i18n.ProjectResourceBundle). log4j:WARN Please initialize the log4j system properly. I am not using log4j nor have I ever with this project. I have a logback.xml in my resources folder. Any ideas on why this warning started to show up? 回答1: You must be using a library that does use log4j. Can you post anything more

问题 I have the lombok plugin in Eclipse and enabled annotation processing in Eclipse under java compiler, but still it is unable to recognize the log statements when I use @Slf4j annotation. Do we have to make any other settings? 回答1: You also have to install Lombok into Eclipse. See also this answer on how to do that or check if Lombok is installed correctly. Full Disclosure: I am one of the Project Lombok developers. 回答2: I got the same error even after Lombok was installed. For me the solution

问题 If I print lot of data in case trace is enabled should i be using isTraceEnabled or just do my log.trace("{} mymessage", "param") would there be any benefit in this case to using isTraceEnabled or no benefit? 回答1: That depends what "param" actually is. If it is a complex expression it is better to use isTraceEnabled . If it is just a reference to an object you can use it directly. Its toString method will only be called if tracing is enabled. Using isTraceEnabled is also beneficial if you

问题 I have a Spring boot + sleuth based application. All works as expected. I have for now logs like this: 2017-05-04 17:55:52.226 INFO [alert,692d0eeca479e216,c3c8b680dc29ad02,false] 17292 --- [cTaskExecutor-1] c.k.a.b.s.alert.impl.AlertServiceImpl : Alert state to process: xxx Now, I want to add custom MDC to my log like the contract reference for example. I want to have logs like this: 2017-05-04 17:55:52.226 INFO [alert,692d0eeca479e216,c3c8b680dc29ad02,false] [CONTRACT_REF] 17292 ---

问题 I try to run maven install on my project with some dependencies: <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.15</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1.5.2</version> </dependency> <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-classic</artifactId> <version>0.9.24</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-core<