log4j log reader

Reprint, original website: http://blog.csdn.net/wud_jiyanhui/article/details/6213443The concept and function of system logAs an application service, the log system plays an important role in tracking debugging, program state record, and recovery of crash data .Common Java Log SystemLog4jOne of the earliest Java log frameworks, launched by the Apache Foundation,

1, about logging is the development of essential knowledge, now give you a detailed talk about how to record log information; the principle is not much said to see the actual operation 2, configure the log4j file: The specific configuration of what means to do not say a look at the understand Hey Log4j.rootcategory=debug,stdlog,errorlogLog4j.appender.stdout=org.apache.log4j.consoleappenderLog4j.appender.std

OK, now we carefully study the configuration of the next logger, the related configuration extension. Log4j has three main components: loggers (recorder), appenders (output source), and layouts (layout). Among them, logger is responsible for logging, Appender responsible for the output to where, layout is responsible for what format output, output which additional information. The combination of these three components makes it easy to record the type

Log4j is an open-source project of Apache. By using log4j, we can control the log information shipping destination: console, file, GUI component, and even an interface server, NT event recorder, UnixSyslog daemon. We can also control the output format of each log. By defining the level of each

--------------------------------------------------------------------------------One: Introduction to LOG4J components A: log4j three important components--loggers, appenders, Layouts These three components work together to make it possible for developers to record information based on categories and levels of information, and to be able to run the control of information logging in a way that has been stor

1, log4j Overview Log4j is an open source project for Apache, mainly used to do the log management work in Java development. It is mainly composed of three important components. You can manage the priority of logs, output destinations, and output formats. Its configuration file mainly has XML and properties two kinds of, of course, can also be confi

Configuration log file relative path in http://sharep.blog.51cto.com/539048/143734 log4j 2009-03-30 18:52:55 Tags: log4j leisure career This article is written more comprehensive, turn around, is to share it, at the same time thank Javaeye on the Zengjinliang, OH method One, the solution is to use the relative path to replace the absolute path, in fact,

Configure the relative path of the log file in Log4j Method 1: the solution is to replace the absolute path with the relative path. In fact, the FileAppender of log4j has such a mechanism, such as log4j. appender. logfile. file =$ {WORKDIR}/logs/app. log"$ {WORKDIR}/" is a v

I. Introduction of LOG4JThe log4j has three main components: loggers (Logger), appenders (output source), and layouts (layout). This can be simply understood as the log category, where the logs are to be exported and how the logs are exported. The combined use of these three components makes it easy to record the type and level of information, and to control the style and location of the

Recently, due to some inexplicable accidental data deletion in the business, we have studied the log4j packet output and want to use log4j to record which data has been deleted by mistake. The specific method is to create a new package, then create a new class, record the deleted data in the class, and configure the output file pointing to the new package in log4j