log4j配置指定类输出到指定的日志文件
log4j.properties 配置
#/app/weblogs/xxgx/xxgx.log
log.path=/app/weblogs/xxgx
### direct log messages to stdout ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %p --- %C{1}.%M(%L) | %m%n
### direct messages to file xxgx.log ###
log4j.appender.file=org.apache.log4j.DailyRollingFileAppender
log4j.appender.file.File=${log.path}/xxgx.log
#log4j.appender.file.File=D:\\logs\\xxgx.log
log4j.appender.file.DatePattern='.'yyyy-MM-dd'.log'
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %p *-* %C{1}.%M(%L) | %m%n
########################################################
# begin
########################################################
log4j.appender.mzdsr=shgjj.xxgx.util.MyDailyRollingFileAppender
log4j.appender.mzdsr.File=${log.path}/Mzdsr.log
log4j.appender.mzdsr.DatePattern='.'yyyy-MM-dd'.log'
log4j.appender.mzdsr.layout=org.apache.log4j.PatternLayout
log4j.appender.mzdsr.MaxFileSize=20MB
log4j.appender.mzdsr.MaxBackupIndex=-1
log4j.appender.mzdsr.layout.ConversionPattern=%d{ABSOLUTE} %p *-* %C{1}.%M(%L) | %m%n
########################################################
# end
########################################################
#--------------------------------------------------------------------------------------------------
########################################################
# begin
########################################################
log4j.appender.mzhy=shgjj.xxgx.util.MyDailyRollingFileAppender
log4j.appender.mzhy.File=${log.path}/mzhy.log
log4j.appender.mzhy.DatePattern='.'yyyy-MM-dd'.log'
log4j.appender.mzhy.layout=org.apache.log4j.PatternLayout
log4j.appender.mzhy.MaxFileSize=20MB
log4j.appender.mzhy.MaxBackupIndex=-1
log4j.appender.mzhy.layout.ConversionPattern=%d{ABSOLUTE} %p *-* %C{1}.%M(%L) | %m%n
########################################################
# end
########################################################
log4j.appender.interfacelog=shgjj.yyzc.util.MyDailyRollingFileAppender
log4j.appender.interfacelog.File=${log.path}/interface/xxgx_log_interface.log
log4j.appender.interfacelog.DatePattern='.'yyyy-MM-dd'.log'
log4j.appender.interfacelog.layout=org.apache.log4j.PatternLayout
log4j.appender.interfacelog.MaxFileSize=20MB
log4j.appender.interfacelog.MaxBackupIndex=-1
log4j.appender.interfacelog.layout.ConversionPattern=%d{ABSOLUTE} %p *-* %C{1}.%M(%L) | %m%n
log4j.appender.kafkalog=shgjj.yyzc.util.MyDailyRollingFileAppender
log4j.appender.kafkalog.File=${log.path}/kafka/xxgx_log_kafka.log
#log4j.appender.kafkalog.File=D:\\logs\\xxgx_log_kafka.log
log4j.appender.kafkalog.DatePattern='.'yyyy-MM-dd'.log'
log4j.appender.kafkalog.layout=org.apache.log4j.PatternLayout
log4j.appender.kafkalog.MaxFileSize=20MB
log4j.appender.kafkalog.MaxBackupIndex=-1
log4j.appender.kafkalog.layout.ConversionPattern=%d{ABSOLUTE} %p *-* %C{1}.%M(%L) | %m%n
##cxf日志
org.apache.cxf.interceptor.LoggingInInterceptor.level=info,file
org.apache.cxf.interceptor.LoggingOutInterceptor.level=info,file
### /WEB-INF set log levels - for more verbose logging change 'info' to 'debug' ###
#log4j.rootLogger=info,stdout,file
log4j.rootLogger=info,file,stdout
log4j.logger.logger_interface =info,interfacelog
log4j.logger.logger_kafka =info,kafkalog
log4j.logger.logger_mzdsr =info,mzdsr
log4j.logger.logger_mzhy =info,mzhy
# 开源库的日志输出控制
# logger for spring
log4j.logger.org.springframework=warn
org.apache.commons.httpclient=warn
org.apache.http=warn
log4j.logger.org.hibernate=warn
DailyRollingFileAppender类
自定义该类需要集成FileAppender 类
MyDailyRollingFileAppender类示例：
自定义该类最多也就是更改一些配置参数而已。
在配置文件中制定该类的全路径 比如：log4j.appender.mzdsr=shgjj.xxgx.util.MyDailyRollingFileAppender
package shgjj.xxgx.util;
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;
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 {
/**
*
*/
private static final long serialVersionUID = 1L;
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();
}
}
在实际业务类中使用日志示例
这个logger_mzdsr 对应log4j.properties 的配置如下
