log4j appender自定义_log4j routingappender_fileappender log4j(18)

30return;

31} catch (java.net.ConnectException e) {

32LogLog.debug("Remote host " + address.getHostName()

33+ " refused connection.");

34} catch (IOException e) {

35if (e instanceof InterruptedIOException) {

36Thread.currentThread().interrupt();

37}

38LogLog.debug("Could not connect to "

39+ address.getHostName() + ". Exception is " + e);

40}

41}

42}

43 }

而后，在每一次日志记录请求时只需将LoggingEvent实例序列化到之前创建的ObjectOutputStream中即可，若该操作失败，则会重新建立Connector线程以隔时检测远程日志服务器可以重新链接。

1 public void append(LoggingEvent event) {

2if (event == null)

3return;

4if (address == null) {

5errorHandler

6.error("No remote host is set for SocketAppender named \""

7+ this.name + "\".");

8return;

9}

10if (oos != null) {

11try {

12if (locationInfo) {

13event.getLocationInformation();

14}

15if (application != null) {

16event.setProperty("application", application);

17}

18event.getNDC();

19event.getThreadName();

20event.getMDCCopy();

21event.getRenderedMessage();

22event.getThrowableStrRep();

23oos.writeObject(event);

24oos.flush();

25if (++counter >= RESET_FREQUENCY) {

26counter = 0;

27// Failing to reset the object output stream every now and

28// then creates a serious memory leak.

29// System.err.println("Doing oos.reset()");

30oos.reset();

31}

32} catch (IOException e) {

33if (e instanceof InterruptedIOException) {

34Thread.currentThread().interrupt();

35}

36oos = null;

37LogLog.warn("Detected problem with connection: " + e);

38if (reconnectionDelay > 0) {

39fireConnector();

40} else {

41errorHandler

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