log4j tutorial

What do you write? Well, it's decadent recently. I haven't written a blog for a long time. I don't know what to write, but the level has dropped ...... Write something simple. log4j logging: Jar package: Commons-logging.jar Log4j-1.2.15.jar You can call it directly: Import org. Apache. commons. Logging. log;Import org. Apache. commons. Logging. logfactory; Private log logger = logfactory. getlog (this. get

The first time I entered the workplace, I had a comprehensive understanding of "log. Unlike print statements that are everywhere in the student age, schools cannot teach anything useful. The recent work happens to be to convert the original log4j log component of the project to logback. The reason for conversion is that logback has better performance than log4j. However, the arrival of the latest version

Log4j finally ushered in the first apache version. Log4j 2 is an upgraded version of log4j. This version is significantly improved compared with its predecessor, including many improvements in logback and problems in the logback architecture. This is the first release version of log4j 2. The following improvements are

log4j Basic Use MethodLOG4J consists of three important components: the priority of the log information, the output destination of the log information, and the output format of the log information. The priority of log information is high to low with error, WARN, INFO, DEBUG, respectively, to specify the importance of this log information; the output destination of the log information specifies whether the log will be printed to the console or the file

LOG4J can be configured by using a configuration file.The configuration steps are as follows: 1. Define the Log component loggerEach logger can have one or more appender, each appender representing the output destination of a log, such as the console or a file.The syntax for configuring root logger is:Log4j.rootlogger=[priority],appendername,appendername,...-The syntax for configuring a custom logger component is:Log4j.logger.loggername=[priority],app

Many diaosi think that log4j is not easy to use because it is not output to the IDE console. Haha, it is actually a disaster caused by configuration. The following describes how to configure log4j to the console step by step, I believe that log4j's output level and output mode are all known. I will not talk about it here. Let's just look at the code comment: # All, TRACE, DEBUG, INFO, WARN, ERROR, FITAL, OF

Writing programs on the Java platform is also a bit of a time, from the former Java-ee to the current background program, more or less used to the log4j to output the log, but each time the use of the others are good, and then tell me how to use, and then directly call the good, has been log4j in the state of the half solution. Today, with the understanding of its own, know the reason why the attitude, care

ObjectiveThere are a number of ways to implement logging in Java,1. The simplest way to do this is system.print.out, err to print the message directly on the console.2. java.util.logging; After the JDK version 1.4, a log API was provided to write logs to the file.3. log4j, the most powerful way to log logs. You can configure the destination, format, and so on for the log by configuring the. Properties or. xml files.4. Commons-logging, the most compreh

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 log output at run time.1, loggersThe loggers component is divide

first, a simple introduction to the use of log4j steps The whole is divided into the following steps: 1, the introduction of Log4j-*.*jar, the JAR package 2, add a configuration file (Log4j.xml or Log4j.properties), 3, the Packaging Log tool class in the business use. This is the traditional use of the steps, but we can directly with the Lombok wrapped Log tool class, the specific steps: 1.1 Introducing

Session Author: Junsan Jin Date: 2005-3-30 Version: 1.0 Mailbox: junsan21@126.com; Junnef21@sohu.com Disclaimer: I reserve all the rights of this article. Part II: Configuring LOG4J LOG4J is primarily a Java-generated Management Pack for log files, using logging-log4j-1.2.9 here. Decompression logging-log4j