JAva logger使用

package com.util_logging;

import java.util.logging.ConsoleHandler;
import java.util.logging.FileHandler;
import java.util.logging.Formatter;
import java.util.logging.Level;
import java.util.logging.LogRecord;
import java.util.logging.Logger;
import java.util.logging.SimpleFormatter;

public class TestUtilLogger {

	public static void main(String[] args) throws Exception {

		//test();
		// test2();
		test3();
	}

	private static void test3() throws Exception {
		Logger log = Logger.getLogger("lavasoft");
		log.setLevel(Level.INFO);
		Logger log1 = Logger.getLogger("lavasoft");
		System.out.println(log == log1); // true
		Logger log2 = Logger.getLogger("lavasoft.blog");
		// log2.setLevel(Level.WARNING);
		ConsoleHandler consoleHandler = new ConsoleHandler();
		consoleHandler.setLevel(Level.ALL);
		log.addHandler(consoleHandler);
		FileHandler fileHandler = new FileHandler("C:/testlog%g.log");
		fileHandler.setLevel(Level.INFO);
		fileHandler.setFormatter(new MyLogHander());
		log.addHandler(fileHandler);
		log.info("aaa");
		log2.info("bbb");
		log2.fine("fine");
	}

	static class MyLogHander extends Formatter {
		@Override
		public String format(LogRecord record) {
			return record.getLevel() + ":" + record.getMessage() + "\r
";
		}
	}

	private static void test2() {
		Logger log = Logger.getLogger("lavasoft");
		log.setLevel(Level.INFO);
		Logger log1 = Logger.getLogger("lavasoft");
		System.out.println(log == log1); // true
		Logger log2 = Logger.getLogger("lavasoft.blog");
		log2.setLevel(Level.WARNING);
		log.info("aaa");
		log2.info("bbb");
		log2.fine("fine");
	}

	private static void test() throws Exception {
		Logger log = Logger.getLogger("lavasoft");
		log.setLevel(Level.INFO);
		Logger log1 = Logger.getLogger("lavasoft");
		System.out.println(log == log1); // true
		Logger log2 = Logger.getLogger("lavasoft.blog");
		// log2.setLevel(Level.WARNING);
		ConsoleHandler consoleHandler = new ConsoleHandler();
		consoleHandler.setLevel(Level.ALL);
		log.addHandler(consoleHandler);
		FileHandler fileHandler = new FileHandler("C:/testlog%g.log");
		fileHandler.setLevel(Level.INFO);
		fileHandler.setFormatter(new SimpleFormatter());
		log.addHandler(fileHandler);
		log.info("aaa");
		log2.info("bbb");
		log2.fine("fine");
	}
}

package com.log4j;

import java.io.File;

import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;

public class TestLog4j {

	static Logger logger = Logger.getLogger(TestLog4j.class);

	public static void main(String args[]) {
		System.out.println(new File(".").getAbsolutePath());
		PropertyConfigurator.configure("src/log4j.properties");
		logger.debug("Here is some DEBUG");
		logger.info("Here is some INFO");
		logger.warn("Here is some WARN");
		logger.error("Here is some ERROR");
		logger.fatal("Here is some FATAL");
	}
}

package com.common_log;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class Commons_logging extends Object {
	
	public static Log log = LogFactory.getLog(Commons_logging.class);

	public static void test() {
		log.debug("111");
		log.info("125");
		log.warn("485");
		log.error("error");

	}

	public static void main(String[] a) {
		Commons_logging.test();
	}
}

log4j.rootCategory=all,stdout,search

log4j.appender.stdout=org.apache.log4j.ConsoleAppender  
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout  
log4j.appender.stdout.layout.ConversionPattern=%d{yyy-MM-dd HH\:mm\:ss} %p  - %m%n  

log4j.appender.search=org.apache.log4j.RollingFileAppender  
log4j.appender.search.File=c\:/search.log  
log4j.appender.search.MaxFileSize=1000KB  
log4j.appender.search.MaxBackupIndex=1  
log4j.appender.search.layout=org.apache.log4j.PatternLayout  
log4j.appender.search.layout.ConversionPattern=%d{yyy-MM-dd HH\:mm\:ss} %p - %m%n