1、在工程中引入log4j-1.2.12.jar和commons-logging.jar.
commons-logging.jar的版本为1.0.3,低版本的配置稍有不同
2、在WEB-INF\classes目录下新建commons-logging.properties文件,文件内容如下:
org.apache.commons.logging.Log=org.apache.commons.logging.impl.Log4JLogger
此行将log实现指定为Log4j
3、在WEB-INF\classes目录下新建log4j.properties文件,简单的配置文件示例如下:
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>/WEB-INF/classes/log4j.properties</param-value>
</context-param>
<context-param>
<param-name>log4jRefreshInterval</param-name>
<param-value>60000</param-value>
</context-param>
注意一:在上述实现类中也可以选用Log4JCategoryLog,但是会出现一些异常:FAIL -
Encountered exception
java.lang.NoSuchMethodError:org.apache.log4j.Category.log(****)
原因:commons-logger.jar和你的log4j.jar版本不兼容。前者是对后者的一个封装,而hibernate中主要是使用前者。前者的功能就是:它封装了一些通常的日志类,比如log4j,java.util.logging.Logger
等,使用的log4j,但是由于版本不对,commons-logger中用了log4j中的那个类,在当前的log4j版本中已经不存在了,所以报错
解决方法:将class目录下commons-logging.properties
org.apache.commons.logging.Log=org.apache.commons.logging.impl.Log4JCategoryLog
更改为
org.apache.commons.logging.Log=org.apache.commons.logging.impl.Log4JLogger
注意二:在配置过程中我log4j.properties放于WEB-INF目录下,并修改相应的log4jConfigLocation,结果没有成功,不过用上述的配置没有问题
注意三:在配置输出路径时由于粗心写成如下:
log4j.appender.file.File=D:\log.log
没有看到任何结果,后来发现路径写错拉,这点要注意啊,呵呵
log4j.appender.file.File=D:/log.log
网友例一:功能比较多
LOG4J的配置之简单使它遍及于越来越多的应用中了:Log4J配置文件实现了输出到控制台、文件、回滚文件、发送日志邮件、输出到数据库日志表、自定义标签等全套功能。择其一二使用就够用了,
log4j.rootLogger=DEBUG,CONSOLE,A1,im
log4j.addivity.org.apache=true
#应用于控制台
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.Threshold=DEBUG
log4j.appender.CONSOLE.Target=System.out
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=[framework]%d-%c-%-4r[%t]%-5p%c%x-%m%n
#log4j.appender.CONSOLE.layout.ConversionPattern=[start]%d{DATE}[DATE]%n%p[PRIORITY]%n%x[NDC]%n%t[THREAD]n%c[CATEGORY]%n%m[MESSAGE]%n%n
#应用于文件
log4j.appender.FILE=org.apache.log4j.FileAppender
log4j.appender.FILE.File=file.log
log4j.appender.FILE.Append=false
log4j.appender.FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.FILE.layout.ConversionPattern=[framework]%d-%c-%-4r[%t]%-5p%c%x-%m%n
#UsethislayoutforLogFactor5analysis
#应用于文件回滚
log4j.appender.ROLLING_FILE=org.apache.log4j.RollingFileAppender
log4j.appender.ROLLING_FILE.Threshold=ERROR
log4j.appender.ROLLING_FILE.File=rolling.log
log4j.appender.ROLLING_FILE.Append=true
log4j.appender.ROLLING_FILE.MaxFileSize=10KB
log4j.appender.ROLLING_FILE.MaxBackupIndex=1
log4j.appender.ROLLING_FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.ROLLING_FILE.layout.ConversionPattern=[framework]%d-%c-%-4r[%t]%-5p%c%x-%m%n
#应用于socket
log4j.appender.SOCKET=org.apache.log4j.RollingFileAppender
log4j.appender.SOCKET.RemoteHost=localhost
log4j.appender.SOCKET.Port=5001
log4j.appender.SOCKET.LocationInfo=true
#SetupforLogFacter5
log4j.appender.SOCKET.layout=org.apache.log4j.PatternLayout
log4j.appender.SOCET.layout.ConversionPattern=[start]%d{DATE}[DATE]%n%p[PRIORITY]%n%x[NDC]%n%t[THREAD]%n%c[CATEGORY]%n%m[MESSAGE]%n%n
#LogFactor5Appender
log4j.appender.LF5_APPENDER=org.apache.log4j.lf5.LF5Appender
log4j.appender.LF5_APPENDER.MaxNumberOfRecords=2000
#发送日志给邮件
log4j.appender.MAIL=org.apache.log4j.net.SMTPAppender
log4j.appender.MAIL.Threshold=FATAL
log4j.appender.MAIL.BufferSize=10
log4j.appender.MAIL.From=web@www.wuset.com
log4j.appender.MAIL.SMTPHost=www.wusetu.com
log4j.appender.MAIL.Subject=Log4JMessage
log4j.appender.MAIL.To=web@www.wusetu.com
log4j.appender.MAIL.layout=org.apache.log4j.PatternLayout
log4j.appender.MAIL.layout.ConversionPattern=[framework]%d-%c-%-4r[%t]%-5p%c%x-%m%n
#用于数据库
log4j.appender.DATABASE=org.apache.log4j.jdbc.JDBCAppender
log4j.appender.DATABASE.URL=jdbc:mysql://localhost:3306/test
log4j.appender.DATABASE.driver=com.mysql.jdbc.Driver
log4j.appender.DATABASE.user=root
log4j.appender.DATABASE.password=
log4j.appender.DATABASE.sql=INSERTINTOLOG4J(Message)VALUES('[framework]%d-%c-%-4r[%t]%-5p%c%x-%m%n')
log4j.appender.DATABASE.layout=org.apache.log4j.PatternLayout
log4j.appender.DATABASE.layout.ConversionPattern=[framework]%d-%c-%-4r[%t]%-5p%c%x-%m%n
log4j.appender.A1=org.apache.log4j.DailyRollingFileAppender
log4j.appender.A1.File=SampleMessages.log4j
log4j.appender.A1.DatePattern=yyyyMMdd-HH'.log4j'
log4j.appender.A1.layout=org.apache.log4j.xml.XMLLayout
#自定义Appender
log4j.appender.im=net.cybercorlin.util.logger.appender.IMAppender
log4j.appender.im.host=mail.cybercorlin.net
log4j.appender.im.username=username
log4j.appender.im.password=password
log4j.appender.im.recipient=corlin@cybercorlin.net
log4j.appender.im.layout=org.apache.log4j.PatternLayout
log4j.appender.im.layout.ConversionPattern=[framework]%d-%c-%-4r[%t]%-5p%c%x-%m%n
网友例二:比较实用
#root输出源配置
log4j.rootLogger=DEBUG,rootlog
log4j.appender.rootlog=org.apache.log4j.RollingFileAppender
log4j.appender.rootlog.MaxFileSize=50000KB
log4j.appender.rootlog.MaxBackupIndex=0
log4j.appender.rootlog.file=D:/jakarta-tomcat-4.1.30/webapps/ROOT/logs/all.log
log4j.appender.rootlog.layout=org.apache.log4j.PatternLayout
log4j.appender.rootlog.layout.ConversionPattern=%d%-5p%m%n
#debug输出源配置
log4j.logger.debuglog=DEBUG,debuglog
log4j.appender.debuglog=org.apache.log4j.RollingFileAppender
log4j.appender.debuglog.MaxFileSize=50000KB
log4j.appender.debuglog.MaxBackupIndex=0
log4j.appender.debuglog.file=D:/jakarta-tomcat-4.1.30/webapps/ROOT/logs/debug.log
log4j.appender.debuglog.layout=org.apache.log4j.PatternLayout
log4j.appender.debuglog.layout.ConversionPattern=%m%n
#info输出源配置
log4j.logger.infolog=DEBUG,infolog
log4j.appender.infolog=org.apache.log4j.RollingFileAppender
log4j.appender.infolog.MaxFileSize=50000KB
log4j.appender.infolog.MaxBackupIndex=0
log4j.appender.infolog.file=D:/jakarta-tomcat-4.1.30/webapps/ROOT/logs/info.log
log4j.appender.infolog.layout=org.apache.log4j.PatternLayout
log4j.appender.infolog.layout.ConversionPattern=%m%n
#warn输出源配置
log4j.logger.warnlog=DEBUG,warnlog
log4j.appender.warnlog=org.apache.log4j.RollingFileAppender
log4j.appender.warnlog.MaxFileSize=50000KB
log4j.appender.warnlog.MaxBackupIndex=0
log4j.appender.warnlog.file=D:/jakarta-tomcat-4.1.30/webapps/ROOT/logs/warn.log
log4j.appender.warnlog.layout=org.apache.log4j.PatternLayout
log4j.appender.warnlog.layout.ConversionPattern=%d%X%-5p%m%n
#error输出源配置
log4j.logger.errorlog=DEBUG,errorlog
log4j.appender.errorlog=org.apache.log4j.RollingFileAppender
log4j.appender.errorlog.MaxFileSize=50000KB
log4j.appender.errorlog.MaxBackupIndex=0
log4j.appender.errorlog.file=D:/jakarta-tomcat-4.1.30/webapps/ROOT/logs/error.log
log4j.appender.errorlog.layout=org.apache.log4j.PatternLayout
log4j.appender.errorlog.layout.ConversionPattern=%d%x%-5p%m%n
网友例二:其余的
在spring+hibernate+struts项目开发中的log4j配置
关键词: log4j.rootLogge
##*********************自定义log4j配置*******************************##
###copybyMSY###
###设置根Logger级别INFO,输出地MSY,MSY2##
log4j.rootLogger=DEBUG,MSY,MSY2
设置com.hcinfo.velocity域对应的级别INFO,DEBUG,WARN,ERROR和输出地MSY,MSY2
log4j.category.com.hcinfo.velocity=DEBUG
###定义stdout的输出到控制断###
#log4j.appender.MSY=org.apache.log4j.ConsoleAppender
#log4j.appender.MSY.Target=System.out
###定义stdout布局模式为PatternLayout###
#log4j.appender.MSY.layout=org.apache.log4j.PatternLayout
###定义stdout的输出格式###
#log4j.appender.MSY.layout.ConversionPattern=%d{ABSOLUTE}%5p%c{1}:%L-%m%n
###定义MSY输出到文件(文件大小到达指定尺寸的时候产生一个新的文件)###
log4j.appender.MSY2=org.apache.log4j.RollingFileAppender
###文件位置###
log4j.appender.MSY2.File=e:/sys2.txt
###文件最大长度###
log4j.appender.MSY2.MaxFileSize=500KB
###备份文件数目###
log4j.appender.MSY2.MaxBackupIndex=1
log4j.appender.MSY2.layout=org.apache.log4j.PatternLayout
log4j.appender.MSY2.layout.ConversionPattern=%d{yyyy-MM-ddHH:mm:ss,SSS}[%t] [%c][%p]-%m%n
###配置日志输出的格式##
###格式说明
#-X号:X信息输出时左对齐;
#%p:日志信息级别
#%d{}:日志信息产生时间
#%c:日志信息所在地(类名)
#%m:产生的日志具体信息
#%n:输出日志信息换行
###下面是定义hibernateLOG4J配置格式###
###directlogmessagestostdout###
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}%5p%c{1}:%L-%m%n
###directmessagestofilehibernate.log###
#log4j.appender.file=org.apache.log4j.FileAppender
#log4j.appender.file.File=hibernate.log
#log4j.appender.file.layout=org.apache.log4j.PatternLayout
#log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE}%5p%c{1}:%L-%m%n
###setloglevels-formoreverboseloggingchange'info'to'debug'###
###在次可定义输出输出端stdout###
log4j.rootLogger=warn,stdout
log4j.logger.net.sf.hibernate=info
###logjusttheSQL
#log4j.logger.net.sf.hibernate.SQL=debug
###logJDBCbindparameters###
log4j.logger.net.sf.hibernate.type=info
###logschemaexport/update###
log4j.logger.net.sf.hibernate.tool.hbm2ddl=debug
###logcacheactivity###
#log4j.logger.net.sf.hibernate.cache=debug
###logjdbcresourceacquisition
#log4j.logger.net.sf.hibernate.impl.BatcherImpl=debug
###enablethefollowinglineifyouwanttotrackdownconnection###
###leakageswhenusingDriverManagerConnectionProvider###
#log4j.logger.net.sf.hibernate.connection.DriverManagerConnectionProvider=trace
##定义log4j的spring配置##
log4j.rootLogger=DEBUG,Spring
log4j.appender.Spring=org.apache.log4j.ConsoleAppender
log4j.appender.Spring.Target=System.out
log4j.appender.Spring.layout=org.apache.log4j.PatternLayout
log4j.appender.Spring.layout.ConversionPattern=%d{ABSOLUTE}%5p%c{1}:%L-%m%n
####
web.xml中的修改:
这样配置文件以及日志文件可以在spring的帮助下,放到开发环境中的任意位置
在这里定位配置文件,需要的是从root开始的绝对路径
,或者设置个
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>classpath:log4j.properties</param-value>
</context-param>
<!--Spring默认刷新Log4j配置文件的间隔,单位为millisecond-->
<context-param>
<param-name>log4jRefreshInterval</param-name>
<param-value>60000</param-value>
</context-param>
<!--Springlog4jConfigloader-->
<listener>
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>
设置监听器
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>classpath:log4j.properties</param-value>
</context-param>
<servlet>
<servlet-name>log4j</servlet-name>
<servlet-class>
org.springframework.web.util.Log4jConfigServlet
</servlet-class>
<load-on-startup>0</load-on-startup>
</servlet>
==================================
什么都做完了,那该测试了,
在action中增加
staticLogger_log=Logger.getLogger(this.getClass().getName);
//log4j(1)然后就可以在需要的地方进行日志记载
_log.debug("做下测试.debug");
_log.info("做下测试.info");
_log.warn("做下测试.warn");
_log.error("做下测试.error");
_log.fatal("做下测试.fatal");
补充:
有时候log日志的位置总觉的绝对路径不爽,那你可以用参数啊,比如${webapp.root}/WEB-INF/log/就是你的项目路径里的了,具体在哪里你自己看了