【轉載】log4j日誌
阿新 • • 發佈:2018-12-03
log4j日誌
https://blog.csdn.net/sunny_na/article/details/55212029
更詳細的log4j配置:https://www.cnblogs.com/aaron-shu/p/7812757.html
### 設定### log4j.rootLogger = debug,stdout,D,E ### 輸出資訊到控制擡 ### log4j.appender.stdout = org.apache.log4j.ConsoleAppender log4j.appender.stdout.Target = System.out log4j.appender.stdout.layout = org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern = [%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n ### 輸出DEBUG 級別以上的日誌到=E://logs/error.log ### log4j.appender.D = org.apache.log4j.DailyRollingFileAppender log4j.appender.D.File = E://logs/log.log log4j.appender.D.Append = true log4j.appender.D.Threshold = DEBUG log4j.appender.D.layout = org.apache.log4j.PatternLayout log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n ### 輸出ERROR 級別以上的日誌到=E://logs/error.log ### log4j.appender.E = org.apache.log4j.DailyRollingFileAppender log4j.appender.E.File =E://logs/error.log log4j.appender.E.Append = true log4j.appender.E.Threshold = ERROR log4j.appender.E.layout = org.apache.log4j.PatternLayout log4j.appender.E.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n
import org.apache.log4j.Logger; /** *@author 0 */ public class Test { private static Logger logger = Logger.getLogger(Test.class); /** * @param args */ public static void main(String[] args) { // System.out.println("This is println message."); // 記錄debug級別的資訊 logger.debug("This is debug message."); // 記錄info級別的資訊 logger.info("This is info message."); // 記錄error級別的資訊 logger.error("This is error message."); } }