//Properties log4jConf = new Properties();
//log4jConf.load(ProLog.class.getResourceAsStream("/log4j.properties")); //PropertyConfigurator.configure(log4jConf);其中ProLog是我写的类名，这个需要换成你自己的名字。 通过这样的方法，可以根据类所在路径找到绝对物理地址。另外，这是一个较完整的输出信息配置下面给出得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。log4j.rootLogger=DEBUG,CONSOLE,A1,im#DEBUG,CONSOLE,FILE,ROLLING_FILE,MAIL,DATABASElog4j.addivity.org.apache=true#################### Console Appender###################log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppenderlog4j.appender.Threshold=DEBUGlog4j.appender.CONSOLE.Target=System.outlog4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayoutlog4j.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.FileAppenderlog4j.appender.FILE.File=file.loglog4j.appender.FILE.Append=falselog4j.appender.FILE.layout=org.apache.log4j.PatternLayoutlog4j.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.RollingFileAppenderlog4j.appender.ROLLING_FILE.Threshold=ERRORlog4j.appender.ROLLING_FILE.File=rolling.loglog4j.appender.ROLLING_FILE.Append=truelog4j.appender.ROLLING_FILE.MaxFileSize=10KBlog4j.appender.ROLLING_FILE.MaxBackupIndex=1log4j.appender.ROLLING_FILE.layout=org.apache.log4j.PatternLayoutlog4j.appender.ROLLING_FILE.layout.ConversionPattern=[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n##################### Socket Appender####################log4j.appender.SOCKET=org.apache.log4j.RollingFileAppenderlog4j.appender.SOCKET.RemoteHost=localhostlog4j.appender.SOCKET.Port=5001log4j.appender.SOCKET.LocationInfo=true# Set up for Log Facter 5log4j.appender.SOCKET.layout=org.apache.log4j.PatternLayoutlog4j.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.LF5Appenderlog4j.appender.LF5_APPENDER.MaxNumberOfRecords=2000######################### SMTP Appender#######################log4j.appender.MAIL=org.apache.log4j.net.SMTPAppenderlog4j.appender.MAIL.Threshold=FATALlog4j.appender.MAIL.BufferSize=10log4j.appender.MAIL.From=chenyl@hollycrm.comlog4j.appender.MAIL.SMTPHost=mail.hollycrm.comlog4j.appender.MAIL.Subject=Log4J Messagelog4j.appender.MAIL.To=chenyl@hollycrm.comlog4j.appender.MAIL.layout=org.apache.log4j.PatternLayoutlog4j.appender.MAIL.layout.ConversionPattern=[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n######################### JDBC Appender#######################log4j.appender.DATABASE=org.apache.log4j.jdbc.JDBCAppenderlog4j.appender.DATABASE.URL=jdbc:mysql://localhost:3306/testlog4j.appender.DATABASE.driver=com.mysql.jdbc.Driverlog4j.appender.DATABASE.user=rootlog4j.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.PatternLayoutlog4j.appender.DATABASE.layout.ConversionPattern=[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%nlog4j.appender.A1=org.apache.log4j.DailyRollingFileAppenderlog4j.appender.A1.File=SampleMessages.log4jlog4j.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.IMAppenderlog4j.appender.im.host = mail.cybercorlin.netlog4j.appender.im.username = usernamelog4j.appender.im.password = passwordlog4j.appender.im.recipient = corlin@cybercorlin.netlog4j.appender.im.layout=org.apache.log4j.PatternLayoutlog4j.appender.im.layout.ConversionPattern =[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n