log4j appender自定义_log4j routingappender_fileappender log4j(2)

5

6public void activateOptions() {

7if (fileName != null) {

8try {

9setFile(fileName, fileAppend, bufferedIO, bufferSize);

10} catch (java.io.IOException e) {

11errorHandler.error("setFile(" + fileName + "," + fileAppend

12+ ") call failed.", e, ErrorCode.FILE_OPEN_FAILURE);

13}

14} else {

15LogLog.warn("File option not set for appender [" + name + "].");

16LogLog.warn("Are you using FileAppender instead of ConsoleAppender?");

17}

18}

19

20public synchronized void setFile(String fileName, boolean append,

21boolean bufferedIO, int bufferSize) throws IOException {

22LogLog.debug("setFile called: " + fileName + ", " + append);

23if (bufferedIO) {

24setImmediateFlush(false);

25}

26reset();

27FileOutputStream ostream = null;

28try {

29ostream = new FileOutputStream(fileName, append);

30} catch (FileNotFoundException ex) {

31String parentName = new File(fileName).getParent();

32if (parentName != null) {

33File parentDir = new File(parentName);

34if (!parentDir.exists() && parentDir.mkdirs()) {

35ostream = new FileOutputStream(fileName, append);

36} else {

37throw ex;

38}

39} else {

40throw ex;

41}

42}

43Writer fw = createWriter(ostream);

44if (bufferedIO) {

45fw = new BufferedWriter(fw, bufferSize);

46}

47this.setQWForFiles(fw);

48this.fileName = fileName;

49this.fileAppend = append;

50this.bufferedIO = bufferedIO;

51this.bufferSize = bufferSize;

52writeHeader();

53LogLog.debug("setFile ended");

54}

DailyRollingFileAppender类

DailyRollingFileAppender继承自FileAppender，不过这个名字感觉有点不靠谱，事实上，DailyRollingFileAppender会在每隔一段时间可以生成一个新的日志文件，不过这个时间间隔是可以设置的，不仅仅只是每隔一天。时间间隔通过setDatePattern()方法设置，datePattern必须遵循SimpleDateFormat中的格式。支持的时间间隔有：

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