java日志两种方法.docVIP

转载时请注明出处 方法一：直接用util提供的logging LoggingClass.java文件： import java.io.IOException;import java.util.logging.FileHandler;import java.util.logging.Level;import java.util.logging.Logger; /*?* author:周友明?* email:a11632@126.com?* */public class LoggingClass ?Logger logger;??public LoggingClass try FileHandler fh new FileHandler info.log, true ;???logger Logger.getLogger LoggingClass ;???logger.addHandler fh ; catch SecurityException e // TODO Auto-generated catch block???e.printStackTrace ; catch IOException e // TODO Auto-generated catch block???e.printStackTrace ; public? void method try int i 1/0;?? catch Exception e // TODO: handle exception???logger.log Level.SEVERE, e.getMessage ; public static void main String[] args // TODO Auto-generated method stub??LoggingClass lc new LoggingClass ;??lc.method ; 方法二：用log4J包 LogTest.java import org.apache.log4j.*; /*?* author:周友明?* email:a11632@126.com?* */public class LogTest static Logger logger Logger.getLogger LogTest.class.getName ; ?public static void main String[] args //??PropertyConfigurator.configure src\\perties ; ??try int i 1/0;?? catch Exception e // TODO: handle exception???logger.log org.apache.log4j.Level.WARN, e.getMessage ; logger.debug Debug ... ; ?? Info ... ; ??logger.warn Warn ... ; logger.error Error ... ; perties # Configure logging for testing: optionally with log file#log4j.rootLogger WARN, stdoutlog4j.rootLogger WARN, stdout, logfile log4j.appender.stdout org.apache.log4j.ConsoleAppenderlog4j.appender.stdout.layout org.apache.log4j.PatternLayoutlog4j.appender.stdout.layout.ConversionPattern %d %p [%c] - %m%n log4j.appender.logfile org.apache.log4j.FileAppender #保存的文件地址log4j.appender.logfile.File target/spring.log #为false时，会删除以前存储在文件中的数据log4j.appender.logfile.append true log4j.appender.logfile.layout org.apache.log4j.PatternLayoutlog4j.appender.logfile.layout.ConversionPattern %d %p [%c] - %m%n 注：方法二要加载log4j包