log4j日志

1.引入的包

2.配置文件

该文件放到src路径下，

 log4j.rootLogger=DEBUG,CONSOLE,A1,im
 #DEBUG,CONSOLE,FILE,ROLLING_FILE,MAIL,DATABASE
 log4j.addivity.org.apache=true
 ###################
 # Console Appender
 ###################
 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
 #####################
 # File Appender
 #####################
 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
 # Use this layout for LogFactor 5 analysis
 ########################
 # Rolling File
 ########################
 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
 ####################
 # Socket Appender
 ####################
 log4j.appender.SOCKET=org.apache.log4j.RollingFileAppender
 log4j.appender.SOCKET.RemoteHost=localhost
 log4j.appender.SOCKET.Port=5001
 log4j.appender.SOCKET.LocationInfo=true
 # Set up for Log Facter 5
 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
 ########################
 # Log Factor 5 Appender
 ########################
 log4j.appender.LF5_APPENDER=org.apache.log4j.lf5.LF5Appender
 log4j.appender.LF5_APPENDER.MaxNumberOfRecords=2000
 ########################
 # SMTP Appender
 #######################
 log4j.appender.MAIL=org.apache.log4j.net.SMTPAppender
 log4j.appender.MAIL.Threshold=FATAL
 log4j.appender.MAIL.BufferSize=10
 log4j.appender.MAIL.From=chenyl@yeqiangwei.com
 log4j.appender.MAIL.SMTPHost=mail.hollycrm.com
 log4j.appender.MAIL.Subject=Log4J Message
 log4j.appender.MAIL.To=chenyl@yeqiangwei.com
 log4j.appender.MAIL.layout=org.apache.log4j.PatternLayout
 log4j.appender.MAIL.layout.ConversionPattern=[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n
 ########################
 # JDBC Appender
 #######################
 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=INSERT INTO LOG4J (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@yeqiangwei.com
 log4j.appender.im.layout=org.apache.log4j.PatternLayout
 log4j.appender.im.layout.ConversionPattern =[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n 

3.打印参数

 %m   输出代码中指定的消息
 %p   输出优先级，即DEBUG，INFO，WARN，ERROR，FATAL
 %r   输出自应用启动到输出该log信息耗费的毫秒数
 %c   输出所属的类目，通常就是所在类的全名
 %t   输出产生该日志事件的线程名
 %n   输出一个回车换行符，Windows平台为“\r\n”，Unix平台为“\n”
 %d   输出日志时间点的日期或时间，默认格式为ISO8601，也可以在其后指定格式，比如：%d{yyy MMM dd HH:mm:ss , SSS}，输出类似：2002年10月18日 22 ： 10 ： 28 ， 921
 %l   输出日志事件的发生位置，包括类目名、发生的线程，以及在代码中的行数。举例：Testlog4.main(TestLog4.java: 10 )