log4j支持同时按日期和文件大小分割日志

<!-- LOG4J -->

<dependency>

<groupId>org.slf4j</groupId>

<artifactId>slf4j-log4j12</artifactId>

<version>1.7.2</version>

</dependency>

package com.newcapec.util.log;

import java.io.File;

import java.io.IOException;

import java.io.Writer;

import java.text.SimpleDateFormat;

import java.util.Calendar;

import java.util.Date;

import java.util.GregorianCalendar;

import java.util.Locale;

import java.util.TimeZone;

import org.apache.log4j.FileAppender;

import org.apache.log4j.Layout;

import org.apache.log4j.helpers.CountingQuietWriter;

import org.apache.log4j.helpers.LogLog;

import org.apache.log4j.helpers.OptionConverter;

import org.apache.log4j.spi.LoggingEvent;

/**

* MyDailyRollingFileAppender extends {@link FileAppender} so that the underlying

* file is rolled over at a user chosen frequency.

*

* <p>

* The rolling schedule is specified by the <b>DatePattern</b> option. This

* pattern should follow the {@link SimpleDateFormat} conventions. In

* particular, you <em>must</em> escape literal text within a pair of single

* quotes. A formatted version of the date pattern is used as the suffix for the

* rolled file name.

*

* <p>

* For example, if the <b>File</b> option is set to <code>/foo/bar.log</code>

* and the <b>DatePattern</b> set to <code>'.'yyyy-MM-dd</code>, on 2001-02-16

* at midnight, the logging file <code>/foo/bar.log</code> will be copied to

* <code>/foo/bar.log.2001-02-16</code> and logging for 2001-02-17 will continue

* in <code>/foo/bar.log</code> until it rolls over the next day.

*

* <p>

* Is is possible to specify monthly, weekly, half-daily, daily, hourly, or

* minutely rollover schedules.

*

* <p>

* <table border="1" cellpadding="2">

* <tr>

* <th>DatePattern</th>

* <th>Rollover schedule</th>

* <th>Example</th>

*

* <tr>

* <td><code>'.'yyyy-MM</code>

* <td>Rollover at the beginning of each month</td>

*

* <td>At midnight of May 31st, 2002 <code>/foo/bar.log</code> will be copied to

* <code>/foo/bar.log.2002-05</code>. Logging for the month of June will be

* output to <code>/foo/bar.log</code> until it is also rolled over the next

* month.

*

* <tr>

* <td><code>'.'yyyy-ww</code>

*

* <td>Rollover at the first day of each week. The first day of the week depends

* on the locale.</td>

*

* <td>Assuming the first day of the week is Sunday, on Saturday midnight, June

* 9th 2002, the file <i>/foo/bar.log</i> will be copied to

* <i>/foo/bar.log.2002-23</i>. Logging for the 24th week of 2002 will be output

* to <code>/foo/bar.log</code> until it is rolled over the next week.

*

* <tr>

* <td><code>'.'yyyy-MM-dd</code>

*

* <td>Rollover at midnight each day.</td>

*

* <td>At midnight, on March 8th, 2002, <code>/foo/bar.log</code> will be copied

* to <code>/foo/bar.log.2002-03-08</code>. Logging for the 9th day of March

* will be output to <code>/foo/bar.log</code> until it is rolled over the next

* day.

*

* <tr>

* <td><code>'.'yyyy-MM-dd-a</code>

*

* <td>Rollover at midnight and midday of each day.</td>

*

* <td>At noon, on March 9th, 2002, <code>/foo/bar.log</code> will be copied to

* <code>/foo/bar.log.2002-03-09-AM</code>. Logging for the afternoon of the 9th

* will be output to <code>/foo/bar.log</code> until it is rolled over at

* midnight.

*

* <tr>

* <td><code>'.'yyyy-MM-dd-HH</code>

*

* <td>Rollover at the top of every hour.</td>

*

* <td>At approximately 11:00.000 o'clock on March 9th, 2002,

* <code>/foo/bar.log</code> will be copied to

* <code>/foo/bar.log.2002-03-09-10</code>. Logging for the 11th hour of the 9th

* of March will be output to <code>/foo/bar.log</code> until it is rolled over

* at the beginning of the next hour.

*

*

* <tr>

* <td><code>'.'yyyy-MM-dd-HH-mm</code>

*

* <td>Rollover at the beginning of every minute.</td>

*

* <td>At approximately 11:23,000, on March 9th, 2001, <code>/foo/bar.log</code>

* will be copied to <code>/foo/bar.log.2001-03-09-10-22</code>. Logging for the

* minute of 11:23 (9th of March) will be output to <code>/foo/bar.log</code>

* until it is rolled over the next minute.

*

* </table>

*

* <p>

* Do not use the colon ":" character in anywhere in the <b>DatePattern</b>

* option. The text before the colon is interpeted as the protocol specificaion

* of a URL which is probably not what you want.

*/

/**

* @Title: 根据DailyRollingFileAppender和RollingFileAppender改编，支持按日期和文件大小分割日志

* @ClassName:MyDailyRollingFileAppender.java

* @Description:

*

* @author: FLY

* @date:2016年11月24日 下午6:23:34

* @version V1.0

*/

public class MyDailyRollingFileAppender extends FileAppender {

// The code assumes that the following constants are in a increasing

// sequence.

static final int TOP_OF_TROUBLE = -1;

static final int TOP_OF_MINUTE = 0;

static final int TOP_OF_HOUR = 1;

static final int HALF_DAY = 2;

static final int TOP_OF_DAY = 3;

static final int TOP_OF_WEEK = 4;

static final int TOP_OF_MONTH = 5;

/**

* The default maximum file size is 10MB. 

*/

protected long maxFileSize = 10* 1024* 1024;

/**

* There is one backup file by default. 

*/

protected int maxBackupIndex = 1;

/**

* The date pattern. By default, the pattern is set to "'.'yyyy-MM-dd" 

* meaning daily rollover. 

*/

private String datePattern = "'.'yyyy-MM-dd";

/**

* The log file will be renamed to the value of the scheduledFilename 

* variable when the next interval is entered. For example, if the rollover 

* period is one hour, the log file will be renamed to the value of 

* "scheduledFilename" at the beginning of the next hour. 

*

* The precise time when a rollover occurs depends on logging activity. 

*/

private String scheduledFilename;

/**

* The next time we estimate a rollover should occur. 

*/

private long nextCheck = System.currentTimeMillis() - 1;

Date now = new Date();

SimpleDateFormat sdf;

RollingCalendar rc = new RollingCalendar();

int checkPeriod = TOP_OF_TROUBLE;

// The gmtTimeZone is used only in computeCheckPeriod() method.

static final TimeZone gmtTimeZone = TimeZone.getTimeZone("GMT");

/**

* The default constructor does nothing. 

*/

public MyDailyRollingFileAppender() {

}

/**

* Instantiate a <code>MyDailyRollingFileAppender</code> and open the file 

* designated by <code>filename</code>. The opened filename will become the 

* ouput destination for this appender. 

*/

public MyDailyRollingFileAppender(Layout layout, String filename,

String datePattern) throws IOException {

super(layout, filename, true);

this.datePattern = datePattern;

activateOptions();

}

/**

* Get the maximum size that the output file is allowed to reach before 

* being rolled over to backup files. 

*

* @since 1.1 

*/

public long getMaximumFileSize() {

return maxFileSize;

}

/**

* Set the maximum size that the output file is allowed to reach before 

* being rolled over to backup files. 

*

* <p>

* This method is equivalent to {@link #setMaxFileSize} except that it is 

* required for differentiating the setter taking a <code>long</code> 

* argument from the setter taking a <code>String</code> argument by the 

* JavaBeans {@link java.beans.Introspector Introspector}. 

*

* @see #setMaxFileSize(String) 

*/

public void setMaximumFileSize(long maxFileSize) {

this.maxFileSize = maxFileSize;

}

/**

* Set the maximum size that the output file is allowed to reach before 

* being rolled over to backup files. 

*

* <p>

* In configuration files, the <b>MaxFileSize</b> option takes an long 

* integer in the range 0 - 2^63. You can specify the value with the 

* suffixes "KB", "MB" or "GB" so that the integer is interpreted being 

* expressed respectively in kilobytes, megabytes or gigabytes. For example, 

* the value "10KB" will be interpreted as 10240. 

*/

public void setMaxFileSize(String value) {

maxFileSize = OptionConverter.toFileSize(value, maxFileSize + 1);

}

/**

* Returns the value of the <b>MaxBackupIndex</b> option. 

*/

public int getMaxBackupIndex() {

return maxBackupIndex;

}

/**

* Set the maximum number of backup files to keep around. 

*

* <p>

* The <b>MaxBackupIndex</b> option determines how many backup files are 

* kept before the oldest is erased. This option takes a positive integer 

* value. If set to zero, then there will be no backup files and the log 

* file will be truncated when it reaches <code>MaxFileSize</code>. 

*/

public void setMaxBackupIndex(int maxBackups) {

this.maxBackupIndex = maxBackups;

}

/**

* The <b>DatePattern</b> takes a string in the same format as expected by 

* {@link SimpleDateFormat}. This options determines the rollover schedule. 

*/

public void setDatePattern(String pattern) {

datePattern = pattern;

}

/**Returns the value of the <b>DatePattern</b> option.*/

public String getDatePattern() {

return datePattern;

}

public void activateOptions() {

super.activateOptions();

if (datePattern != null && fileName != null) {

now.setTime(System.currentTimeMillis());

sdf = new SimpleDateFormat(datePattern);

int type = computeCheckPeriod();

printPeriodicity(type);

rc.setType(type);

File file = new File(fileName);

scheduledFilename = fileName

+ sdf.format(new Date(file.lastModified()));

} else {

LogLog.error("Either File or DatePattern options are not set for appender ["

+ name + "].");

}

}

void printPeriodicity(int type) {

switch (type) {

case TOP_OF_MINUTE:

LogLog.debug("Appender [" + name + "] to be rolled every minute.");

break;

case TOP_OF_HOUR:

LogLog.debug("Appender [" + name

+ "] to be rolled on top of every hour.");

break;

case HALF_DAY:

LogLog.debug("Appender [" + name

+ "] to be rolled at midday and midnight.");

break;

case TOP_OF_DAY:

LogLog.debug("Appender [" + name + "] to be rolled at midnight.");

break;

case TOP_OF_WEEK:

LogLog.debug("Appender [" + name

+ "] to be rolled at start of week.");

break;

case TOP_OF_MONTH:

LogLog.debug("Appender [" + name

+ "] to be rolled at start of every month.");

break;

default:

LogLog.warn("Unknown periodicity for appender [" + name + "].");

}

}

// This method computes the roll over period by looping over the

// periods, starting with the shortest, and stopping when the r0 is

// different from from r1, where r0 is the epoch formatted according

// the datePattern (supplied by the user) and r1 is the

// epoch+nextMillis(i) formatted according to datePattern. All date

// formatting is done in GMT and not local format because the test

// logic is based on comparisons relative to 1970-01-01 00:00:00

// GMT (the epoch).

int computeCheckPeriod() {

RollingCalendar rollingCalendar = new RollingCalendar(gmtTimeZone,

Locale.ENGLISH);

// set sate to 1970-01-01 00:00:00 GMT

Date epoch = new Date(0);

if (datePattern != null) {

for (int i = TOP_OF_MINUTE; i <= TOP_OF_MONTH; i++) {

SimpleDateFormat simpleDateFormat = new SimpleDateFormat(

datePattern);

simpleDateFormat.setTimeZone(gmtTimeZone); // do all date

// formatting in GMT

String r0 = simpleDateFormat.format(epoch);

rollingCalendar.setType(i);

Date next = new Date(rollingCalendar.getNextCheckMillis(epoch));

String r1 = simpleDateFormat.format(next);

// System.out.println("Type = "+i+", r0 = "+r0+", r1 = "+r1);

if (r0 != null && r1 != null && !r0.equals(r1)) {

return i;

}

}

}

return TOP_OF_TROUBLE; // Deliberately head for trouble...

}

/**

* Implements the usual roll over behaviour. 

*

* <p>

* If <code>MaxBackupIndex</code> is positive, then files { 

* <code>File.1</code>, ..., <code>File.MaxBackupIndex -1</code> are renamed 

* to {<code>File.2</code>, ..., <code>File.MaxBackupIndex</code> . 

* Moreover, <code>File</code> is renamed <code>File.1</code> and closed. A 

* new <code>File</code> is created to receive further log output. 

*

* <p>

* If <code>MaxBackupIndex</code> is equal to zero, then the 

* <code>File</code> is truncated with no backup files created. 

*/

public// synchronization not necessary since doAppend is alreasy synched

void sizeRollOver() {

File target;

File file;

LogLog.debug("rolling over count="

+ ((CountingQuietWriter) qw).getCount());

LogLog.debug("maxBackupIndex=" + maxBackupIndex);

String datedFilename = fileName + sdf.format(now);

if (maxBackupIndex > 0) {

// Delete the oldest file, to keep Windows happy.

file = new File(datedFilename + '.' + maxBackupIndex);

if (file.exists())

file.delete();

// Map {(maxBackupIndex - 1), ..., 2, 1} to {maxBackupIndex, ..., 3,

// 2}

for (int i = maxBackupIndex - 1; i >= 1; i--) {

file = new File(datedFilename + "." + i);

if (file.exists()) {

target = new File(datedFilename + '.' + (i + 1));

LogLog.debug("Renaming file " + file + " to " + target);

file.renameTo(target);

}

}

// Rename fileName to datedFilename.1

target = new File(datedFilename + "." + 1);

this.closeFile(); // keep windows happy.

file = new File(fileName);

LogLog.debug("Renaming file " + file + " to " + target);

file.renameTo(target);

}else if (maxBackupIndex < 0){//infinite number of files 

//find the max backup index

for (int i = 1; i < Integer.MAX_VALUE; i++) {

target = new File(datedFilename + "." + i);

if (! target.exists()) {//Rename fileName to datedFilename.i

this.closeFile();

file = new File(fileName);

file.renameTo(target);

LogLog.debug("Renaming file " + file + " to " + target);

break;

}

}

}

try {

// This will also close the file. This is OK since multiple

// close operations are safe.

this.setFile(fileName, false, bufferedIO, bufferSize);

} catch (IOException e) {

LogLog.error("setFile(" + fileName + ", false) call failed.", e);

}

scheduledFilename = datedFilename;

}

public synchronized void setFile(String fileName, boolean append,

boolean bufferedIO, int bufferSize) throws IOException {

super.setFile(fileName, append, this.bufferedIO, this.bufferSize);

if (append) {

File f = new File(fileName);

((CountingQuietWriter) qw).setCount(f.length());

}

}

protected void setQWForFiles(Writer writer) {

this.qw = new CountingQuietWriter(writer, errorHandler);

}

/**

* Rollover the current file to a new file. 

*/

void timeRollOver() throws IOException {

/* Compute filename, but only if datePattern is specified*/

if (datePattern == null) {

errorHandler.error("Missing DatePattern option in rollOver().");

return;

}

String datedFilename = fileName + sdf.format(now);

// It is too early to roll over because we are still within the

// bounds of the current interval. Rollover will occur once the

// next interval is reached.

if (scheduledFilename.equals(datedFilename)) {

return;

}

// close current file, and rename it to datedFilename

this.closeFile();

File target = new File(scheduledFilename);

if (target.exists()) {

target.delete();

}

File file = new File(fileName);

boolean result = file.renameTo(target);

if (result) {

LogLog.debug(fileName + " -> " + scheduledFilename);

} else {

LogLog.error("Failed to rename [" + fileName + "] to ["

+ scheduledFilename + "].");

}

try {

// This will also close the file. This is OK since multiple

// close operations are safe.

super.setFile(fileName, false, this.bufferedIO, this.bufferSize);

} catch (IOException e) {

errorHandler.error("setFile(" + fileName + ", false) call failed.");

}

scheduledFilename = datedFilename;

}

/**

* This method differentiates MyDailyRollingFileAppender from its super class. 

*

* <p>

* Before actually logging, this method will check whether it is time to do 

* a rollover. If it is, it will schedule the next rollover time and then 

* rollover. 

**/

protected void subAppend(LoggingEvent event) {

long n = System.currentTimeMillis();

if (n >= nextCheck) {

now.setTime(n);

nextCheck = rc.getNextCheckMillis(now);

try {

timeRollOver();

} catch (IOException ioe) {

LogLog.error("rollOver() failed.", ioe);

}

} else if ((fileName != null)

&& ((CountingQuietWriter) qw).getCount() >= maxFileSize) {

sizeRollOver();

}

super.subAppend(event);

}

}

/**

* RollingCalendar is a helper class to MyDailyRollingFileAppender. Given a 

* periodicity type and the current time, it computes the start of the next 

* interval. 

**/

class RollingCalendar extends GregorianCalendar {

int type = MyDailyRollingFileAppender.TOP_OF_TROUBLE;

RollingCalendar() {

super();

}

RollingCalendar(TimeZone tz, Locale locale) {

super(tz, locale);

}

void setType(int type) {

this.type = type;

}

public long getNextCheckMillis(Date now) {

return getNextCheckDate(now).getTime();

}

public Date getNextCheckDate(Date now) {

this.setTime(now);

switch (type) {

case MyDailyRollingFileAppender.TOP_OF_MINUTE:

this.set(Calendar.SECOND, 0);

this.set(Calendar.MILLISECOND, 0);

this.add(Calendar.MINUTE, 1);

break;

case MyDailyRollingFileAppender.TOP_OF_HOUR:

this.set(Calendar.MINUTE, 0);

this.set(Calendar.SECOND, 0);

this.set(Calendar.MILLISECOND, 0);

this.add(Calendar.HOUR_OF_DAY, 1);

break;

case MyDailyRollingFileAppender.HALF_DAY:

this.set(Calendar.MINUTE, 0);

this.set(Calendar.SECOND, 0);

this.set(Calendar.MILLISECOND, 0);

int hour = get(Calendar.HOUR_OF_DAY);

if (hour < 12) {

this.set(Calendar.HOUR_OF_DAY, 12);

} else {

this.set(Calendar.HOUR_OF_DAY, 0);

this.add(Calendar.DAY_OF_MONTH, 1);

}

break;

case MyDailyRollingFileAppender.TOP_OF_DAY:

this.set(Calendar.HOUR_OF_DAY, 0);

this.set(Calendar.MINUTE, 0);

this.set(Calendar.SECOND, 0);

this.set(Calendar.MILLISECOND, 0);

this.add(Calendar.DATE, 1);

break;

case MyDailyRollingFileAppender.TOP_OF_WEEK:

this.set(Calendar.DAY_OF_WEEK, getFirstDayOfWeek());

this.set(Calendar.HOUR_OF_DAY, 0);

this.set(Calendar.SECOND, 0);

this.set(Calendar.MILLISECOND, 0);

this.add(Calendar.WEEK_OF_YEAR, 1);

break;

case MyDailyRollingFileAppender.TOP_OF_MONTH:

this.set(Calendar.DATE, 1);

this.set(Calendar.HOUR_OF_DAY, 0);

this.set(Calendar.SECOND, 0);

this.set(Calendar.MILLISECOND, 0);

this.add(Calendar.MONTH, 1);

break;

default:

throw new IllegalStateException("Unknown periodicity type.");

}

return getTime();

}

}

<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">

<log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/'>

<!-- 控制台 -->

<appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">

<layout class="org.apache.log4j.PatternLayout">

<param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss:SSS} %l %m%n" />

</layout>

<!--限制输出级别 -->

<filter class="org.apache.log4j.varia.LevelRangeFilter">

<param name="LevelMax" value="error" />

<param name="LevelMin" value="debug" />

</filter>

</appender>

<!-- 指定文件 -->

<appender name="PROJECT" class="*.MyDailyRollingFileAppender">

<!-- WIN -->

<!-- <param name="file" value="D:/logs/项目名/项目名.log" /> -->

<!-- LINUX -->

<param name="file" value="/usr/local/java/tomcat-log/项目名/项目名.log" />

<param name="DatePattern" value="'.'yyyy-MM-dd'.log'" />

<param name="append" value="true" />

<param name="MaxFileSize" value="20MB" />

<param name="MaxBackupIndex" value="-1" /> <!-- 无限的文件数量，index顺序按时间顺序递增 -->

<param name="encoding" value="UTF-8" />

<param name="threshold" value="info" />

<layout class="org.apache.log4j.PatternLayout">

<param name="ConversionPattern" value="[%d{dd HH:mm:ss,SSS\} %-5p] [%t] %c{2\} - %m%n" />

</layout>

</appender>

<!-- 屏蔽不需要的日志 -->

<logger name="org.springframework">

<level value="ERROR" />

</logger>

<logger name="org.apache.http">

<level value="ERROR" />

</logger>

<root>

<priority value="debug" />

<appender-ref ref="CONSOLE" />

<appender-ref ref="PROJECT" />

</root>

</log4j:configuration>

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

private static final Logger log = LoggerFactory.getLogger(类名.class)

log.warn("【根据**，异常】,Map对象:{}转化JavaBean失败", Map);