log4j appender自定义_log4j routingappender_fileappender log4j(35)

24if (connections.size() < MAX_CONNECTIONS) {

25synchronized (this) {

26connections.addElement(newClient);

27writers.addElement(pw);

28pw.print("TelnetAppender v1.0 ("

29+ connections.size()

30+ " active connections)\r\n\r\n");

31pw.flush();

32}

33} else {

34pw.print("Too many connections.\r\n");

35pw.flush();

36newClient.close();

37}

38

39}

40

41 }

SMTPAppender类

SMTPAppender将日志消息以邮件的形式发送出来，默认实现，它会先缓存日志信息，只有当遇到日志级别是ERROR或ERROR以上的日志消息时才通过邮件的形式发送出来，如果在遇到触发发送的日志发生之前缓存中的日志信息已满，则最早的日志信息会被覆盖。用户可以通过setEvaluatorClass()方法改变触发发送日志的条件。

1 public void append(LoggingEvent event) {

2if (!checkEntryConditions()) {

3return;

4}

5event.getThreadName();

6event.getNDC();

7event.getMDCCopy();

8if (locationInfo) {

9event.getLocationInformation();

10}

11event.getRenderedMessage();

12event.getThrowableStrRep();

13cb.add(event);

14if (evaluator.isTriggeringEvent(event)) {

15sendBuffer();

16}

17 }

18 protected void sendBuffer() {

19try {

20String s = formatBody();

21boolean allAscii = true;

22for (int i = 0; i < s.length() && allAscii; i++) {

23allAscii = s.charAt(i) <= 0x7F;

24}

25MimeBodyPart part;

26if (allAscii) {

27part = new MimeBodyPart();

28part.setContent(s, layout.getContentType());

29} else {

30try {

31ByteArrayOutputStream os = new ByteArrayOutputStream();

32Writer writer = new OutputStreamWriter(MimeUtility.encode(

33os, "quoted-printable"), "UTF-8");

34writer.write(s);

35writer.close();

36InternetHeaders headers = new InternetHeaders();

37headers.setHeader("Content-Type", layout.getContentType()

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