java.util.logging无配置文件全局日志管理案例

程序运行日志对调试程序很有用，JDK提供日志记录功能，网上很多讲述JDK日志功能的帖子只是代码片段，这里提供一个比较完整的案例，主要是注重几个日志相关的类之互相配合使用的关系。代码比较简单，类的说明在手册里也有，就不解释了。

 

package Town;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.logging.*;

/*
 * Created with IntelliJ IDEA.
 * User: cobra
 * Date: 15-12-3
 * Time: 下午4:16
 * To change this template use File | Settings | File Templates.
 */
public class TraceLog {
	private String LogPath ="E:\\data\\Logs\\lucom\\";
	private int logCount = 5;
	private int LogLimit = 10000000;	//指定要写入到任意文件的近似最大量（以字节为单位） 10M
	private static  LogManager logManager = LogManager.getLogManager();
	private static Logger InfoLog;
	private static Logger ErrLog;

	public TraceLog () {
		if (logManager.getLogger("LogInfo") == null) {
			iniInfoLog();
		} else {
			InfoLog = logManager.getLogger("LogInfo");
		}
		if (logManager.getLogger("LogErr") == null) {
			iniErrLog();
		} else {
			ErrLog = logManager.getLogger("LogErr");
		}
	}
	//初始化info日志
	private void iniInfoLog () {
		String InfoLogFile = "traceinfo%g.%u.log";
		InfoLog = Logger.getLogger("LogInfo");
		try {
			FileHandler InfoFileHandler = new FileHandler(LogPath+InfoLogFile , LogLimit, logCount,true);
			InfoFileHandler.setLevel(Level.INFO);
			InfoFileHandler.setFormatter(new Formatter() {
				@Override
				public String format(LogRecord record) {
					return (new SimpleDateFormat("[yyyy-MM-dd HH:mm:ss.SSS]").format(new Date()))+":"+record.getLevel()+":"+record.getMessage()+"\n";
				}
			});
			InfoLog.addHandler(InfoFileHandler);
			logManager.addLogger(InfoLog);
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	//初始化Err日志
	private void iniErrLog () {
		String ErrLogFile = "traceerr%g.%u.log";
		ErrLog = Logger.getLogger("LogErr");
		try {
			FileHandler ErrFileHandler = new FileHandler(LogPath+ErrLogFile , LogLimit,logCount,true);
			ErrFileHandler.setLevel(Level.WARNING);
			ErrFileHandler.setFormatter(new Formatter() {
				@Override
				public String format(LogRecord record) {
					return (new SimpleDateFormat("[yyyy-MM-dd HH:mm:ss.SSS]").format(new Date()))+":"+record.getLevel()+":"+record.getMessage()+"\n";
				}
			});
			ErrLog.addHandler(ErrFileHandler);
			logManager.addLogger(ErrLog);
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	public void logInfo (String LoggingMessage)
	{
		InfoLog.info(LoggingMessage);
	}
	public void logErr (String LoggingMessage)
	{
		ErrLog.warning(LoggingMessage);
	}
}

 

评论

1 楼 lmf462696585 2015-12-05  

说好的手册呢