java 日志写法_java 日志的一种写法（转）

public void writeLog(String logFileName, String content) {

try {

/* 日志文件大小最大为100KB */

File log = new File(logFileName);

if (log.length() > 102400) {

if (log.delete())

logger.info("日志文件: " + logFileName + " 已满, 已经自动清空.");

}

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss ");

RandomAccessFile raf = new RandomAccessFile(logFileName, "rw");

String contents = sdf.format(new Date()) + content + "/r/n";

raf.seek(raf.length());

raf.write(contents.getBytes("GBK"));

raf.close();

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

}

调用这个函数就行了,