package easyJ.logging;
import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.logging.ConsoleHandler;
import java.util.logging.FileHandler;
import java.util.logging.Formatter;
import java.util.logging.Handler;
import java.util.logging.Level;
import java.util.logging.LogRecord;
import java.util.logging.Logger;
import easyJ.common.EasyJConfiguration;
import easyJ.common.SystemEnviroment;
public class EasyJLogger {
// Log文件的路径及格式：放到当前web目录下的log目录中 %g 代表自动编号
private static final String LOG_DIR = EasyJConfiguration.getRoot()
+ SystemEnviroment.fileSeparator + "log";
private static final String LOG_FILE = LOG_DIR
+ SystemEnviroment.fileSeparator + "EasyJ"
+ System.currentTimeMillis() + "-%g.log";
// private static final String logFile = "%hEasyJ"
// + System.currentTimeMillis() + "-%g.log";
// private static final String logFile = "%h/topo%g.log";
// 写入到任何一个文件的最大字节数
private static final int limit = 1000 * 1024;
// 要使用的文件数
private static final int count = 20;
// 指定 append 模式
private static final boolean append = true;
// 默认LOG级别
private static final Level defaultLevel = Level.INFO;
/**
* 从Logger存储器取得Logger对象。
*
* @param strClassName
* @return
*/
public synchronized static Logger getLogger(String strClassName) {
Logger logger = null;
File logDir = new File(LOG_DIR);
if (!logDir.exists()) {
logDir.mkdir();
}
if (strClassName == null) { // 取当前Logger类默认的Logger对象
String strDefaultClassName = EasyJLogger.class.getName();
logger = Logger.getLogger(strDefaultClassName);
} else {
logger = Logger.getLogger(strClassName);
}
// 添加默认的文件处理句柄，如果不存在，添加默认的ConsoleHandler
Handler handler = getFileHandler();
if (handler == null) {
handler = new ConsoleHandler();
}
logger.addHandler(handler);
return logger;
}
/**
* 取默认的文件处理句柄。
*
* @return
*/
private static FileHandler getFileHandler() {
FileHandler fileHandler = null;
try {
fileHandler = new FileHandler(LOG_FILE, limit, count, append);
} catch (SecurityException e) {
//e.printStackTrace();
} catch (IOException e) {
//e.printStackTrace();
}
if (fileHandler != null) {
fileHandler.setLevel(defaultLevel);
fileHandler.setFormatter(new EasyJFormatter());
}
return fileHandler;
}
/**
* Logger格式化处理器。
*
* @author xinwuhen
*/
final static class EasyJFormatter extends Formatter {
@Override
public String format(LogRecord record) {
StringBuffer strOutput = new StringBuffer();
strOutput.append("[");
strOutput.append(getFormattedTime(record.getMillis(),
"yyyy-MM-dd HH:mm:SS, sss"));
strOutput.append("], ");
strOutput.append(record.getLevel());
strOutput.append(", ");
strOutput.append(record.getSourceClassName());
strOutput.append(",");
strOutput.append(record.getSourceMethodName());
strOutput.append(" ");
strOutput.append(record.getMessage());
strOutput.append(":");
strOutput.append(System.getProperty("line.separator"));
Throwable throwAble = record.getThrown();
if (throwAble != null) {
strOutput.append(getThrowAbleInfo(throwAble));
}
return strOutput.toString();
}
/**
* 根据指定格式转换时间。
*
* @param lngMillTimes
* @param strTimeFormat
* @return
*/
private String getFormattedTime(long lngMillTimes, String strTimeFormat) {
Date lvDate = new Date();
lvDate.setTime(lngMillTimes);
SimpleDateFormat lvFormat = new SimpleDateFormat(strTimeFormat,
Locale.CHINA);
return lvFormat.format(lvDate);
}
/**
* 取例外对象的信息。
*
* @param throwAble
* @return
*/
private String getThrowAbleInfo(Throwable throwAble) {
String throwAbleInfo = "";
StackTraceElement[] ste = throwAble.getStackTrace();
if (ste != null) {
final String strLineSeparator = System
.getProperty("line.separator");
StringBuffer sbStackTraceEle = new StringBuffer();
for (StackTraceElement stackTraceElement : ste) {
sbStackTraceEle.append(" at ");
sbStackTraceEle.append(stackTraceElement.toString());
sbStackTraceEle.append(strLineSeparator);
}
throwAbleInfo = throwAble.toString() + strLineSeparator
+ sbStackTraceEle;
}
return throwAbleInfo;
}
}
}