Log4j consists of three important components: 1. Priority of log information (Loggers), 2. The output destination of log information (Appenders), 3. Output format of log information (Layouts).
The priority of log information from high to low includes ERROR, WARN, INFO and DEBUG, which are used to specify the importance of ...
Added by roba59 on Tue, 08 Mar 2022 01:23:55 +0200
Log overview of springboot
TRACE<DEBUG<INFO<WARN<ERROR<FATALThe default springboot is set to info, and only info and information larger than info (error and warn) will be output in the consoleIf you start it in the debug mode, the debug information will also be output to the console, but the level of the log rema ...
Added by goldages05 on Mon, 24 Jan 2022 02:25:53 +0200
The configuration file of Log4J is used to set the level, storage and layout of the recorder. It can be connected with the setting information in key=value format or xml format. Through configuration, the running environment of Log4J can be created.
1. Configuration file The basic format of Log4J configuration file is as follows:
The first thing to understand is: SpringBoot - the bottom layer is the Spring framework, which uses JCL (commons logging) by default‘ SpringBoot uses SLF4j and logback. SLF4j is just a facade log. It only defines the interface and does not implement it. This is also to meet the polymorphic log implementation. Common logback, ...
Added by dimitar on Tue, 04 Jan 2022 04:29:04 +0200
In the process of program development, we often need a lot of program debugging and troubleshooting. In the beginning stage, we often use South and debug to debug the program. The output information of the console is not detailed enough most of the time, so the log factory was born. We can more easily view the background log ...
Added by BluePhoenixNC on Thu, 16 Dec 2021 14:44:48 +0200
Today is the third day of Gujin class. I learned exception handling and log with Mr. Gong Gong today,
Exception handling and logging
1. java exception system
The exception should describe the cause of the current exception Quickly determine the location of the exception according to the exception stack Combine exception description and e ...
Added by idealbrain on Sun, 31 Oct 2021 06:53:28 +0200
1. First configure the jdk
Find the location of your own jdk
2. Configure Tomcat
Find your own tomcat location
3. Right click the project, build path -------- > configure build path
4. Import log4j-1.2.14.jar
Right click log4j-1.2.14.jar file build path ----- > add to build p ...
Added by hadeosdin on Sat, 02 May 2020 12:22:02 +0300
1. Simple use
Only one jar package of log4j needs to be imported, and the log4j.properties configuration file under the src directory will be loaded by default
1. Print log to console
log4j.properties configuration file content
#Set the log level to info and output to the console
log4j.appender.console = org ...
Added by jay_bo on Mon, 20 Apr 2020 18:53:38 +0300
Let's talk about it briefly: the first time I contacted the platform provided by Baidu AI, I looked at it briefly, liked it very much, and provided many practical functions. What we use here is the function of character recognition. Its usage is very simple, and it can be realized by basic http call, ...
Added by nimzie on Fri, 14 Feb 2020 12:27:29 +0200