log4j日志写文件
log4j.properties 配置
log4j.rootLogger=info,stdout,D,E
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=[%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n
### DEBUG =/data/logs/pangbar/server/log.log
log4j.appender.D=org.apache.log4j.DailyRollingFileAppender
log4j.appender.D.File=/data/logs/f_user/server/log4j/log.log
log4j.appender.D.Append=true
log4j.appender.D.Threshold=DEBUG
log4j.appender.D.layout=org.apache.log4j.PatternLayout
log4j.appender.D.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n
###/data/logs/pangbar/server/error.log ###
log4j.appender.E=org.apache.log4j.DailyRollingFileAppender
log4j.appender.E.File=/data/logs/f_user/server/log4j/error.log
log4j.appender.E.Append=true
log4j.appender.E.Threshold=ERROR
log4j.appender.E.layout=org.apache.log4j.PatternLayout
log4j.appender.E.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n
log4j.logger.visit=INFO,file1
log4j.additivity.visit = false
log4j.appender.file1=com.fzm.user.log.MinuteRollingFileAppender
#vpnlog/visit/visitInfo.log D:\\data\\visit\\visitInfo.log
log4j.appender.file1.File=vpnlog/visit/visitInfo.log
#yyyy-MM-dd-HH-mm 每分钟 yyyy-MM-dd 每天
log4j.appender.file1.DatePattern=yyyy-MM-dd-HH-mm
log4j.appender.file1.layout=org.apache.log4j.PatternLayout
log4j.logger.download=INFO,file2
log4j.additivity.download = false
log4j.appender.file2=com.fzm.user.log.MinuteRollingFileAppender
#vpnlog/download/downloadInfo.log D:\\data\\download\\downloadInfo.log
log4j.appender.file2.File=vpnlog/download/downloadInfo.log
#yyyy-MM-dd-HH-mm 每分钟 yyyy-MM-dd 每天
log4j.appender.file2.DatePattern=yyyy-MM-dd-HH-mm
log4j.appender.file2.layout=org.apache.log4j.PatternLayout
#log4j.appender.database=org.apache.log4j.jdbc.JDBCAppender
#log4j.appender.database.layout=org.apache.log4j.PatternLayout
#log4j.appender.database.driver=com.mysql.jdbc.Driver
#设置要将日志插入到数据库的驱动
#log4j.appender.database.Threshold=info
#定义什么级别的错误将写入到数据库中
#log4j.appender.database.BufferSize=1
#设置缓存大小,就是当有1条日志信息是才忘数据库插一次
#log4j.appender.database.URL=jdbc:mysql://***.***.*.**:3306/f_vpn_user?useUnicode=true&characterEncoding=UTF-8
#log4j.appender.database.user=***
#log4j.appender.database.password=****
#log4j.appender.database.sql=insert into t_visit_record(user_id,ip_addr,status) values('%X{user_id}','%X{ip_addr}','%X{status}')
log4j使用的类
package com.test.user.log;
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.File;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Calendar;
import java.util.TimeZone;
import java.util.Locale;
import org.apache.log4j.FileAppender;
import org.apache.log4j.Layout;
import org.apache.log4j.helpers.LogLog;
import org.apache.log4j.spi.LoggingEvent;
/**
* DailyRollingFileAppender 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.
*
*
* @author Eirik Lygre
* @author Ceki Gülcü
*/
public class MinuteRollingFileAppender 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 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 MinuteRollingFileAppender() {
}
/**
* Instantiate a <code>DailyRollingFileAppender</code> and open the file
* designated by <code>filename</code>. The opened filename will become
* the ouput destination for this appender.
*
*/
public MinuteRollingFileAppender(Layout layout, String filename,
String datePattern) throws IOException {
super(layout, filename, true);
this.datePattern = datePattern;
activateOptions();
}
/**
* 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...
}
/**
* Rollover the current file to a new file.
*/
void rollOver() 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 = copy(file, 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.
this.setFile(fileName, false, this.bufferedIO, this.bufferSize);
} catch (IOException e) {
errorHandler.error("setFile(" + fileName + ", false) call failed.");
}
scheduledFilename = datedFilename;
}
/**
* Copies src file to dst file. If the dst file does not exist, it is
* created.8KB cache
*
* @param src
* @param dst
* @throws IOException
*/
boolean copy(File src, File dst) throws IOException {
try {
InputStream in = new FileInputStream(src);
OutputStream out = new FileOutputStream(dst);
// Transfer bytes from in to out
byte[] buf = new byte[8192];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
in.close();
out.close();
return true;
} catch (FileNotFoundException e) {
LogLog.error("源文件不存在,或者目标文件无法被识别." + e);
return false;
} catch (IOException e) {
LogLog.error("文件读写错误." + e);
return false;
}
}
/**
* This method differentiates DailyRollingFileAppender 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 {
rollOver();
} catch (IOException ioe) {
LogLog.error("rollOver() failed.", ioe);
}
}
super.subAppend(event);
}
}
/**
* RollingCalendar is a helper class to DailyRollingFileAppender. 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 = -3560331770601814177L;
int type = MinuteRollingFileAppender.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 MinuteRollingFileAppender.TOP_OF_MINUTE:
this.set(Calendar.SECOND, 0);
this.set(Calendar.MILLISECOND, 0);
this.add(Calendar.MINUTE, 5);
break;
case MinuteRollingFileAppender.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 MinuteRollingFileAppender.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 MinuteRollingFileAppender.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 MinuteRollingFileAppender.TOP_OF_WEEK:
this.set(Calendar.DAY_OF_WEEK, getFirstDayOfWeek());
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.WEEK_OF_YEAR, 1);
break;
case MinuteRollingFileAppender.TOP_OF_MONTH:
this.set(Calendar.DATE, 1);
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.MONTH, 1);
break;
default:
throw new IllegalStateException("Unknown periodicity type.");
}
return getTime();
}
}
###使用
private static org.apache.log4j.Logger visitlogger = org.apache.log4j.Logger.getLogger("visit");
public void test() {
visitlogger.info('写文件');
}