log4j.rootLogger=DEBUG,CONSOLE,DATABASE,FILE log4j.addivity.org.apache=true # 應用於控制檯 log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender log4j.appender.CONSOLE.Threshold=INFO log4j.appender.CONSOLE.Target=System.out log4j.appender.CONSOLE.Encoding=GBK log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout log4j.appender.conOut.layout.ConversionPattern=%d %-5p [%c] %m%n # 用於數據庫 log4j.appender.DATABASE=org.apache.log4j.jdbc.JDBCAppender log4j.appender.DATABASE.URL=jdbc:oracle:thin:@192.168.0.103:1521:ORCL log4j.appender.DATABASE.driver=oracle.jdbc.driver.OracleDriver log4j.appender.DATABASE.user=Nation log4j.appender.DATABASE.password=1 log4j.appender.CONSOLE.Threshold=WARN log4j.appender.DATABASE.sql=INSERT INTO LOG4J(stamp,thread, infolevel,class,messages) VALUES ('%d{yyyy-MM-dd HH:mm:ss}', '%t', '%p', '%l', '%m') # INSERT INTO LOG4J (Message) VALUES ('[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n') # 寫入數據庫中的表LOG4J的Message字段中,內容%d(日期)%c: 日誌信息所在地(類名)%p: 日誌信息級別%m: 產生的日誌具體信息 %n: 輸出日誌信息換行 log4j.appender.DATABASE.layout=org.apache.log4j.PatternLayout log4j.appender.DATABASE.layout.ConversionPattern=%d %-5p [%c] %m%n # 天天新建日誌 #(警告的意思是DailyRollingFileAppender這個類不帶屬性maxBackupIndex,maxFileSize的,它是#按日期來保存日誌的,因此不須要設置該2個屬性,若是想要設置日誌文件的大小,能夠使用#RollingFileAppender這個類,平時開發中日誌配置文件中須要注意設置。) log4j.appender.A1=org.apache.log4j.DailyRollingFileAppender log4j.appender.A1.File=./logs/cebLog.txt log4j.appender.A1.Encoding=GBK log4j.appender.A1.Threshold=DEBUG log4j.appender.A1.DatePattern='.'yyyy-MM-dd log4j.appender.A1.layout=org.apache.log4j.PatternLayout log4j.appender.A1.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L : %m%n #應用於文件 #(警告的意思是DailyRollingFileAppender這個類不帶屬性maxBackupIndex,maxFileSize的,它是#按日期來保存日誌的,因此不須要設置該2個屬性,若是想要設置日誌文件的大小,能夠使用#RollingFileAppender這個類,平時開發中日誌配置文件中須要注意設置。) log4j.appender.File=org.apache.log4j.DailyRollingFileAppender log4j.appender.File.File=./logs/cebLog.txt log4j.appender.File.DatePattern='_'yyyy-MM-dd'.txt' #log4j.appender.File.MaxFileSize=100KB #log4j.appender.File.MaxBackupIndex=100 log4j.appender.File.layout=org.apache.log4j.PatternLayout log4j.appender.File.layout.ConversionPattern=%d %t %-5p [%c] %m%n # 應用於文件回滾(即文件到達MaxFileSize就會產生一個新的文件,MaxBackupIndex是指文件的最大數目) 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.CONSOLE_FILE.Encoding=GBK 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=%d %-5p [%c] %m%n #自定義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 = yyflyons@163.com log4j.appender.im.layout=org.apache.log4j.PatternLayout log4j.appender.im.layout.ConversionPattern =%d %-5p [%c] %m%n #應用於socket 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 # 發送日誌給郵件 log4j.appender.MAIL=org.apache.log4j.net.SMTPAppender log4j.appender.MAIL.Threshold=FATAL log4j.appender.MAIL.BufferSize=10 log4j.appender.MAIL.From=yyflyons@163.com log4j.appender.MAIL.SMTPHost=www.wusetu.com log4j.appender.MAIL.Subject=Log4J Message log4j.appender.MAIL.To=yyflyons@126.com log4j.appender.MAIL.layout=org.apache.log4j.PatternLayout log4j.appender.MAIL.layout.ConversionPattern=%d %-5p [%c] %m%n
這裏面你是能夠選擇性的添加的的,我只是將全部的appender給列了出來,至於爲何這麼寫,網上不少資料,我就不囉嗦了。
3.package com.iflytek.test; import org.apache.log4j.Logger; public class Log4jJunit { private static Logger logger = Logger.getLogger(Log4jJunit.class.getName()); public static void main(String[] args) { logger.error("測試"); } }
4.結果 java
測試 log4j:ERROR Could not find value for key log4j.appender.DATABASE log4j:ERROR Could not instantiate appender named "DATABASE". log4j:ERROR Could not find value for key log4j.appender.FILE log4j:ERROR Could not instantiate appender named "FILE". web
(若是你只選擇在控制檯上打印信息的話)