log4j logger example

according to from high to low). log4j.rootlogger=debug,console #将日志输出到控制台 log4j.appender.console=org.apache.log4j.consoleappender #日志输出的信息布局 log4j.appender.console.layout=org.apache.log4j.patternlayout Log4j.appender.console.target=system.out #日志输出格式:%d{time format},%c classpath,%n newline,%m print information #中文需 to Unicode # LOG4J.APPENDER.CONSOLE.LAYOUT.CONVERSIONPATTERN=%N[\U65F6\U95F4]%d{yyyy-mm-dd HH\:mm\:ss} [\u8DEF\u5F84]%c %n[\u4fe1\u606f]%m%n LOG4J.APPENDER.CONSOLE.LAYOUT.CONV

1. Create a web application and introduce the jar package of log4j. 2. Open the log4j package, find log4j. DTD under the org. Apache. log4j. xml package, and decompress it to the WEB-INF directory of the Web application. 3. Create a log4j preparation file under the WEB-INF d

= org.apache.log4j.fileappender# setting file output path Log4j.appender.appender1.File=c:/users/lixin/desktop/ myproject.log# setting file output style Log4j.appender.appender1.layout=org.apache.log4j.ttcclayout Then test the example in one of the simplest Java programs: write a log to the desktop's Myproject.log package Com.myproject.test; import Org.apache.log4j.Logger; public class Mytestclass { private static

Here is an example of file pointing to a specific file instead of a folder. ### Set output encoding ###Log4j. appender. logfile. Encoding = UTF-8### Set log levels ###Log4j. rootlogger = debug, stdout, d, e ### Out print at console ###Log4j. appender. stdout = org. Apache. log4j