日志记录工具类

import org.apache.log4j.Logger;

public class LogUnits {
	private static Logger logger = null;
	public static void logException(Exception e){
		StackTraceElement[] stacks = (new Throwable()).getStackTrace();
		String newClass = stacks[1].getClassName();
		if(logger == null || !newClass.equals(logger.getName())){
			logger = Logger.getLogger(newClass);
		}
		StringBuffer logInfo = new StringBuffer(100);
		logInfo.append("Exception happen in Method:" + stacks[1].getMethodName()+"();");
		logInfo.append("\r\n");
		logInfo.append(" line number:"+stacks[1].getLineNumber()+ ";");
		logInfo.append("\r\n");
				StringWriter trace = new StringWriter();
		e.printStackTrace(new PrintWriter(trace));
		logInfo.append(" Exception:");
		logInfo.append(trace.toString());		logger.error(logInfo.toString());
	}
	public static void logInfo(String message){
		StackTraceElement[] stacks = (new Throwable()).getStackTrace();
		String newClass = stacks[1].getClassName();
		if(logger == null || !newClass.equals(logger.getName())){
			logger = Logger.getLogger(newClass);
		}
		StringBuffer logInfo = new StringBuffer(100);
		logInfo.append("Method Name:" + stacks[1].getMethodName()+"();");
		logInfo.append("\r\n");
		logInfo.append("line number:"+stacks[1].getLineNumber()+ ";");
		logInfo.append("\r\n");
		logInfo.append("Message:");
		logInfo.append(message);
		logger.info(logInfo);
	}
	public static void logDebug(String message){
		StackTraceElement[] stacks = (new Throwable()).getStackTrace();
		String newClass = stacks[1].getClassName();
		if(logger == null || !newClass.equals(logger.getName())){
			logger = Logger.getLogger(newClass);
		}
		StringBuffer logInfo = new StringBuffer(100);
		logInfo.append("Method Name:" + stacks[1].getMethodName()+"();");
		logInfo.append("\r\n");
		logInfo.append("line number:"+stacks[1].getLineNumber()+ ";");
		logInfo.append("\r\n");
		logInfo.append("Message:");
		logInfo.append(message);
		logger.debug(logInfo);
	}
}