log4j

I use a legacy library that writes logs using log4j. My default log4j.properties file directs the log to the console, but in some specific functions of my main program, I would like to disable logging altogether (from all classes). I tried this: Logger.getLogger(BasicImplementation.class.getName()).setLevel(Level.OFF); where "BasicImplementation" is one of the main classes that does logging, but it didn't work - the logs are still written to the console. Here is my log4j.properties: log4j.rootLogger=warn, stdout log4j.logger.ac.biu.nlp.nlp.engineml=info, logfile log4j.logger.org.BIU.utils

NDC和MDC的区别 Java中使用的日志的实现框架有很多种，常用的log4j和logback以及java.util.logging，而log4j是apache实现的一个开源日志组件（Wrapped implementations），logback是slf4j的原生实现（Native implementations）。需要说明的slf4j是Java简单日志的门面(The Simple Logging Facade for Java)，如果使用slf4j日志门面，必须要用到slf4j-api，而logback是直接实现的，所以不需要其他额外的转换以及转换带来的消耗，而slf4j要调用log4j的实现，就需要一个适配层，将log4j的实现适配到slf4j-api可调用的模式。 说完基本的日志框架的区别之后，我们再看看NDC和MDC。 不管是log4j还是logback，打印的日志要能体现出问题的所在，能够快速的定位到问题的症结，就必须携带上下文信息（context information），那么其存储该信息的两个重要的类就是NDC（Nested Diagnostic Context）和MDC（Mapped Diagnositc Context）。 NDC采用栈的机制存储上下文，线程独立的，子线程会从父线程拷贝上下文。其调用方法如下： 1.开始调用 NDC.push(message);

I'm using log4j2-beta9 and I have the following config (part of it): <Appenders> <SMTP name="Mailer" suppressExceptions="false" subject="${subject}" to="${receipients}" from="${from}" smtpHost="${smtpHost}" smtpPort="${smtpPort}" smtpProtocol="${smtpProtocol}" smtpUsername="${smtpUser}" smtpPassword="${smtpPassword}" smtpDebug="false" bufferSize="20"> <PatternLayout> <pattern>%d{dd-MM-yyyy HH:mm:ss,SSS} %5p %m%n</pattern> </PatternLayout> </SMTP> <Async name="AsyncMailer"> <AppenderRef ref="Mailer"/> </Async> </Appenders> <Loggers> <Root level="info"> <AppenderRef ref="AsyncMailer" level=

I am creating a solution for my application log, which have various types of logging (user, application, etc...), wanted to save each type of log in a separate file. This is possible with log4j or some other API? How could I do that? If you deem interesting, I edit the question and put the codes, but I do not think it's worth, they are still very basic. Thanks in advance. Of cource, use different FileAppenders Example from internet: log4j.rootLogger=DEBUG # AdminFileAppender - used to log messages in the admin.log file. log4j.appender.AdminFileAppender=org.apache.log4j.FileAppender log4j

I work on a low-latency trading application. We'd like to increase the amount of lof4j logging that we write to file, whilst minimising the impact on our end-to-end processing time. What is the recommended way of doing this? I think FileAppender.append is synchronous, so we need to do something a bit smarter than that.... Yes, the appenders are synchronous. You want something like this: http://www.spartanjava.com/2009/asynchronous-logging-with-log4j/ bear in mind that AsyncAppender adds a thread per appender & that increasing the amount of logging you do may mean a substantial increase in the

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am writing standalone java application which is using Hibernate. Maven brought jboss-logging library for me. I am not using JBoss. The question is: can I log with this library only, or I need to download some logging implementation like log4j ? 回答1: JBoss Logging is just a logging facade. To configure your loggers, e.g. use/add handlers, you need a log manager like JBoss Log Manager, the J.U.L. log manager, logback or log4j. JBoss Logging will attempt to discover which log manager is being used. You can specify which log manager you'd like

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a rest service developed with jersey, I have a ContainerRequestFilters for print the request, as follows: <init-param> <param-name>com.sun.jersey.spi.container.ContainerRequestFilters</param-name> <param-value>com.sun.jersey.api.container.filter.LoggingFilter</param-value> </init-param> and I have logger in the post methods using log4j. But the LoggingFilter print in the log different log4j. Is there any way that LogginFilter use the log4j's configuration? I tried this in the log4j.xml file: <logger name="com.sun.jersey.api.container