log4j Console log information, according to the different levels, to display in color

Let the console log color highlighted below, is divided into two situations.

One. In the Eclipse console

At this point, the simpler way of implementation. No other tool classes are required.

The warn,error,fatal level is displayed in red. Debug,info, default color

Log4j.xml

<?xml version= "1.0" encoding= "UTF-8"?> <! DOCTYPE log4j:configuration Public "-//apache//dtd log4j 1.2//en" "Log4j.dtd" > <log4j:configuration "http://jakarta.apache.org/log4j/" > <!--appenders--> <appender name= "CONSOLE. ERR "class=" Org.apache.log4j.ConsoleAppender "> <param name=" target "value=" System.err "/> <layout" class= " Org.apache.log4j.PatternLayout "> <param name=" Conversionpattern "value="%-5p:%c-%m%n "/> </layout&
		Gt <filter class= "Org.apache.log4j.varia.LevelRangeFilter" > <param name= "levelmin" value= "Warn"/> <para M name= "Levelmax" value= "fatal"/> <param name= "Acceptonmatch" value= "false"/> </filter> </append er> <appender name= "CONSOLE. Out "class=" Org.apache.log4j.ConsoleAppender "> <param name=" target "value=" System.out "/> <layout" class= " Org.apache.log4j.PatternLayout "> <param name=" Conversionpattern "value="%-5P:%c-%m%n "/> </layout> <filter class=" Org.apache.log4j.varia.LevelRangeFilter "> <param name=" Levelmin "value=" Debug "/> <param name=" Levelmax "value=" info "/> <param name=" Acceptonmatch "value=" FAL " Se "/> </filter> </appender> <logger name=" Com.errout "> <level value=" Debug "/> </l ogger> <!--Root Logger--> <root> <priority value= "warn"/> <appender-ref ref= "CONSOLE. ERR "/> <appender-ref ref=" CONSOLE.
 Out "/> </root> </log4j:configuration>

Package com.errout;

Import Org.apache.log4j.Logger;

public class Testerrout {

	private static final Logger Logger = Logger.getlogger (testerrout.class);
	
	public static void Main (string[] args) {
		Logger.debug (' This is DEBUG!!! ');
		Logger.info ("This is info!!!");
		Logger.warn ("This is warn!!!");
		Logger.error ("This is Error!!!");
		Logger.fatal ("This is Fatal!!!");
	}

Two. Using Jcabi-log-0.2.1.jar

Official website http://www.jcabi.com/jcabi-log/multicolor.html

Log4j.xml

<?xml version= "1.0" encoding= "UTF-8"?> <!
DOCTYPE log4j:configuration Public "-//apache//dtd log4j 1.2//en" "Log4j.dtd" >
<log4j:configuration xmlns: log4j= "http://jakarta.apache.org/log4j/" >


	<appender name= "Multicolorconsole" Org.apache.log4j.ConsoleAppender ">
    <layout class=" Com.jcabi.log.MulticolorLayout ">
        <param Name= "Conversionpattern" value= "[%color{%-5p}]%c:%m%n"/>
    </layout>
	</appender>

	< Logger name= "Com.jcabi" >
		<level value= "Debug"/>
	</logger>
	
	<!--Root logger-->
	<root>
		<priority value= "warn"/>
		<appender-ref ref= "Multicolorconsole"
	/> </root>

</log4j:configuration>

Package Com.jcabi;

Import Org.apache.log4j.Logger;

/**
 * Use Jcabi to let log4j console color display
 * @author Lena Yang * * */Public
class Testjcabi {
	
	private static Final Logger Logger = Logger.getlogger (testjcabi.class);
	
	
	public static void Main (String arg[]) {
		Logger.debug (' This is DEBUG!!! ');
		Logger.info ("This is info!!!");
		Logger.warn ("This is warn!!!");
		Logger.error ("This is Error!!!");
		Logger.fatal ("This is Fatal!!!");
	}

This, in eclipse, has no effect. It only works in Linux.

Jcabi jar Package Download:

http://download.csdn.net/detail/hardwin/4633978