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Log4j配置备查[Log4j]
所属分类
:[框架知识] |
创建时间
:2013-01-13 |
文章属性
:转载 |
文章来源
: |
作者
:windfly
<p> <span><font size="x-small">配置日志信息输出目的地,其语法为:</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.appenderName = fully.qualified.name.of.appender.class // </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">"fully.qualified.name.of.appender.class" 可以指定下面五个目的地中的一个: </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">1.org.apache.log4j.ConsoleAppender(控制台) </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">2.org.apache.log4j.FileAppender(文件) </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">3.org.apache.log4j.DailyRollingFileAppender(每天产生一个日志文件) </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">4.org.apache.log4j.RollingFileAppender(文件大小到达指定尺寸的时候产生一个新的文件) </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">5.org.apache.log4j.WriterAppender(将日志信息以流格式发送到任意指定的地方) </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">1.ConsoleAppender选项 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">Threshold=WARN:指定日志消息的输出最低层次。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">ImmediateFlush=true:默认值是true,意谓着所有的消息都会被立即输出。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">Target=System.err:默认情况下是:System.out,指定输出控制台 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">2.FileAppender 选项 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">Threshold=WARN:指定日志消息的输出最低层次。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">ImmediateFlush=true:默认值是true,意谓着所有的消息都会被立即输出。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">File=mylog.txt:指定消息输出到mylog.txt文件。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">Append=false:默认值是true,即将消息增加到指定文件中,false指将消息覆盖指定的文件内容。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">3.DailyRollingFileAppender 选项 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">Threshold=WARN:指定日志消息的输出最低层次。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">ImmediateFlush=true:默认值是true,意谓着所有的消息都会被立即输出。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">File=mylog.txt:指定消息输出到mylog.txt文件。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">Append=false:默认值是true,即将消息增加到指定文件中,false指将消息覆盖指定的文件内容。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">DatePattern='.'yyyy-ww:每周滚动一次文件,即每周产生一个新的文件。当然也可以指定按月、周、天、时和分。即对应的格式如下: </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">1)'.'yyyy-MM: 每月 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">2)'.'yyyy-ww: 每周 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">3)'.'yyyy-MM-dd: 每天 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">4)'.'yyyy-MM-dd-a: 每天两次 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">5)'.'yyyy-MM-dd-HH: 每小时 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">6)'.'yyyy-MM-dd-HH-mm: 每分钟 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">4.RollingFileAppender 选项 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">Threshold=WARN:指定日志消息的输出最低层次。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">ImmediateFlush=true:默认值是true,意谓着所有的消息都会被立即输出。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">File=mylog.txt:指定消息输出到mylog.txt文件。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">Append=false:默认值是true,即将消息增加到指定文件中,false指将消息覆盖指定的文件内容。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">MaxFileSize=100KB: 后缀可以是KB, MB 或者是 GB. 在日志文件到达该大小时,将会自动滚动,即将原来的内容移到mylog.log.1文件。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">MaxBackupIndex=2:指定可以产生的滚动文件的最大数。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">实际应用: </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.A1=org.apache.log4j.ConsoleAppender //这里指定了日志输出的第一个位置A1是控制台ConsoleAppender </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small"><br> </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">3、配置日志信息的格式,其语法为: </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">A. log4j.appender.appenderName.layout = fully.qualified.name.of.layout.class </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">"fully.qualified.name.of.layout.class" 可以指定下面4个格式中的一个: </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">1.org.apache.log4j.HTMLLayout(以HTML表格形式布局), </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">2.org.apache.log4j.PatternLayout(可以灵活地指定布局模式), </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">3.org.apache.log4j.SimpleLayout(包含日志信息的级别和信息字符串), </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">4.org.apache.log4j.TTCCLayout(包含日志产生的时间、线程、类别等等信息) </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">1.HTMLLayout 选项 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">LocationInfo=true:默认值是false,输出java文件名称和行号 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">Title=my app file: 默认值是 Log4J Log Messages. </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">2.PatternLayout 选项 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">ConversionPattern=%m%n :指定怎样格式化指定的消息。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">3.XMLLayout 选项 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">LocationInfo=true:默认值是false,输出java文件和行号 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">实际应用: </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.A1.layout=org.apache.log4j.PatternLayout </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">B. log4j.appender.A1.layout.ConversionPattern=%-4r %-5p %d{yyyy-MM-dd HH:mm:ssS} %c %m%n </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">这里需要说明的就是日志信息格式中几个符号所代表的含义: </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">-X号: X信息输出时左对齐; </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">%p: 输出日志信息优先级,即DEBUG,INFO,WARN,ERROR,FATAL, </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">%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 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">%r: 输出自应用启动到输出该log信息耗费的毫秒数 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">%c: 输出日志信息所属的类目,通常就是所在类的全名 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">%t: 输出产生该日志事件的线程名 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">%l: 输出日志事件的发生位置,相当于%C.%M(%F:%L)的组合,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) </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">%x: 输出和当前线程相关联的NDC(嵌套诊断环境),尤其用到像java servlets这样的多客户多线程的应用中。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">%%: 输出一个"%"字符 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">%F: 输出日志消息产生时所在的文件名称 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">%L: 输出代码中的行号 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">%m: 输出代码中指定的消息,产生的日志具体信息 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">%n: 输出一个回车换行符,Windows平台为"\r\n",Unix平台为"\n"输出日志信息换行 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">可以在%与模式字符之间加上修饰符来控制其最小宽度、最大宽度、和文本的对齐方式。如: </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">1)%20c:指定输出category的名称,最小的宽度是20,如果category的名称小于20的话,默认的情况下右对齐。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">2)%-20c:指定输出category的名称,最小的宽度是20,如果category的名称小于20的话,"-"号指定左对齐。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">3)%.30c:指定输出category的名称,最大的宽度是30,如果category的名称大于30的话,就会将左边多出的字符截掉,但小于30的话也不会有空格。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">4)%20.30c:如果category的名称小于20就补空格,并且右对齐,如果其名称长于30字符,就从左边交远销出的字符截掉。 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">这里上面三个步骤是对前面Log4j组件说明的一个简化;下面给出一个具体配置例子,在程序中可以参照执行: </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.rootLogger=INFO,A1,B2 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.A1=org.apache.log4j.ConsoleAppender </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.A1.layout=org.apache.log4j.PatternLayout </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.A1.layout.ConversionPattern=%-4r %-5p %d{yyyy-MM-dd HH:mm:ssS} %c %m%n </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">根据上面的日志格式,某一个程序的输出结果如下: </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">0  INFO 2003-06-13 13:23:46968 ClientWithLog4j Client socket: Socket[addr=localhost/127.0.0.1,port=8002,localport=2014] </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">16  DEBUG 2003-06-13 13:23:46984 ClientWithLog4j Server says: 'Java server with log4j, Fri Jun 13 13:23:46 CST 2003' </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">16  DEBUG 2003-06-13 13:23:46984 ClientWithLog4j GOOD </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">16  DEBUG 2003-06-13 13:23:46984 ClientWithLog4j Server responds: 'Command 'HELLO' not understood.' </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">16  DEBUG 2003-06-13 13:23:46984 ClientWithLog4j HELP </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">16  DEBUG 2003-06-13 13:23:46984 ClientWithLog4j Server responds: 'Vocabulary: HELP QUIT' </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">16  DEBUG 2003-06-13 13:23:46984 ClientWithLog4j QUIT </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small"><br> </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">4. # 当输出信息于回滚文件时 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.ROLLING_FILE=org.apache.log4j.RollingFileAppender //指定以文件的方式输出日志 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.ROLLING_FILE.Threshold=ERROR </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.ROLLING_FILE.File=rolling.log //文件位置,也可以用变量${java.home}、rolling.log </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.ROLLING_FILE.Append=true </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.ROLLING_FILE.MaxFileSize=10KB //文件最大尺寸 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.ROLLING_FILE.MaxBackupIndex=1 //备份数 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.ROLLING_FILE.layout=org.apache.log4j.PatternLayout </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.ROLLING_FILE.layout.ConversionPattern=[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small"><br> </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">6. Log4j比较全面的配置 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">  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, </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.rootLogger=DEBUG,CONSOLE,A1,im </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.addivity.org.apache=true </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small"># 应用于控制台 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.Threshold=DEBUG </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.CONSOLE.Target=System.out </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.CONSOLE.layout.ConversionPattern=[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">#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 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">#应用于文件 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.FILE=org.apache.log4j.FileAppender </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.FILE.File=file.log </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.FILE.Append=false </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.FILE.layout=org.apache.log4j.PatternLayout </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.FILE.layout.ConversionPattern=[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small"># Use this layout for LogFactor 5 analysis </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small"># 应用于文件回滚 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.ROLLING_FILE=org.apache.log4j.RollingFileAppender </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.ROLLING_FILE.Threshold=ERROR </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.ROLLING_FILE.File=rolling.log //文件位置,也可以用变量${java.home}、rolling.log </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.ROLLING_FILE.Append=true //true:添加 false:覆盖 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.ROLLING_FILE.MaxFileSize=10KB //文件最大尺寸 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.ROLLING_FILE.MaxBackupIndex=1 //备份数 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.ROLLING_FILE.layout=org.apache.log4j.PatternLayout </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.ROLLING_FILE.layout.ConversionPattern=[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small"><br> </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">#应用于socket </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.SOCKET=org.apache.log4j.RollingFileAppender </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.SOCKET.RemoteHost=localhost </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.SOCKET.Port=5001 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.SOCKET.LocationInfo=true </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small"># Set up for Log Facter 5 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.SOCKET.layout=org.apache.log4j.PatternLayout </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">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 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small"><br> </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small"># Log Factor 5 Appender </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.LF5_APPENDER=org.apache.log4j.lf5.LF5Appender </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.LF5_APPENDER.MaxNumberOfRecords=2000 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small"># 发送日志给邮件 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.MAIL=org.apache.log4j.net.SMTPAppender </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.MAIL.Threshold=FATAL </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.MAIL.BufferSize=10 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.MAIL.From=web@www.wuset.com </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.MAIL.SMTPHost=www.wusetu.com </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.MAIL.Subject=Log4J Message </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.MAIL.To=web@www.wusetu.com </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.MAIL.layout=org.apache.log4j.PatternLayout </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.MAIL.layout.ConversionPattern=[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small"># 用于数据库 </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.DATABASE=org.apache.log4j.jdbc.JDBCAppender </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.DATABASE.URL=jdbc:mysql://localhost:3306/test </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.DATABASE.driver=com.mysql.jdbc.Driver </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.DATABASE.user=root </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.DATABASE.password= </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.DATABASE.sql=INSERT INTO LOG4J (Message) VALUES ('[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n') </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.DATABASE.layout=org.apache.log4j.PatternLayout </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.DATABASE.layout.ConversionPattern=[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small"><br> </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.A1=org.apache.log4j.DailyRollingFileAppender </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.A1.File=SampleMessages.log4j </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.A1.DatePattern=yyyyMMdd-HH'.log4j' </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.A1.layout=org.apache.log4j.xml.XMLLayout </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">#自定义Appender </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.im = net.cybercorlin.util.logger.appender.IMAppender </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.im.host = mail.cybercorlin.net </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.im.username = username </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.im.password = password </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.im.recipient = corlin@cybercorlin.net </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.im.layout=org.apache.log4j.PatternLayout </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.im.layout.ConversionPattern =[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small"><br> </font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">--------------------------------------------------------------------------------------------</font></span> </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in">   </p> <p style="margin-bottom: 0in; margin-left: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small"> log4j 按时间和大小增加新日志文件</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"><br> </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"> </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <b><span><font size="x-small">一、按照一定时间产生日志文件,配置文件如下:</font></span></b><font size="x-small"><span> </span></font> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"># Set root logger level to ERROR and its only appender to A1.</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.rootLogger=ERROR,R</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"> </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"># R is set to be a DailyRollingFileAppender.</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.R=org.apache.log4j.DailyRollingFileAppender</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"> </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.R.File=backup.log</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.R.DatePattern = '.'yyyy-MM-dd</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.R.layout=org.apache.log4j.PatternLayout</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.R.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss} [%c]-[%p] %m%n</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"> </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">以上配置是每天产生一个备份文件。其中备份文件的名字叫backup.log。 www_bitscn_com </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">具体的效果是这样:当天的日志信息记录在 backup.log文件中,前一天的记录在名称为  backup.log.yyyy-mm-dd 的文件中。</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">类似的,如果需要每月产 生一个文件可以修改上面的配置:</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">将</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.R.DatePattern = '.'yyyy-MM-dd</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">改为</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.R.DatePattern = '.'yyyy-MM</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"> </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <b><span><font size="x-small">二、根据日志文件大小自动产生新日志文件</font></span></b><font size="x-small"><span> </span></font> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">配置文件内容 如下:</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"> </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"># Set root logger level to ERROR and its only appender to A1.</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.rootLogger=ERROR,R</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"> </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"># R is set to be a RollingFileAppender.</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.R=org.apache.log4j.RollingFileAppender</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"> </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.R.File=backup.log</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">#log4j.appender.R.MaxFileSize=100KB</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"> </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"># Keep one backup file</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.R.MaxBackupIndex=1</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.R.layout=org.apache.log4j.PatternLayout</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.R.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss} [%c]-[%p] %m%n</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"> </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"> </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">其中:</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">#日志文件的大小</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.R.MaxFileSize=100KB </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"># 保存一个备份文件</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.R.MaxBackupIndex=1 </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"> </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"> </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"> </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"> </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j输出多个自定义日志文件</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"> </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j 的强大功能无可置疑,但实际应用中免不了遇到某个功能需要输出独立的日志文件的情况,怎样才能把所需的内容从 原有日志中分离,形成单独的日志文件呢?其实只要在现有的log4j 基础上稍加配置即可轻松实现这一功能。</font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">先看一个常见的log4j.properties 文件,它是在控制台 和myweb.log 文件中记录日志: </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.rootLogger=DEBUG, stdout, logfile </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.category.org.springframework=ERROR </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.category.org.apache=INFO </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.stdout=org.apache.log4j.ConsoleAppender </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.stdout.layout=org.apache.log4j.PatternLayout </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m%n </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.logfile=org.apache.log4j.RollingFileAppender </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.logfile.File=${myweb.root}/WEB-INF/log/myweb.log </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.logfile.MaxFileSize=512KB </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.logfile.MaxBackupIndex=5 </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.logfile.layout=org.apache.log4j.PatternLayout </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.logfile.layout.ConversionPattern=%d %p [%c] - %m%n </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">如果想对不同的类输出不同的文件( 以cn.com.Test 为 例) ,先要在Test.java 中定义: </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">private static Log logger = LogFactory.getLog(</font></span><span><font size="x-small" color="red">Test.class</font></span><span><font size="x-small"> ); </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">然后在log4j.properties 中加入: </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.logger.</font></span><span><font size="x-small" color="red">cn.com.Test</font></span><span><font size="x-small"> = DEBUG, </font></span><span><font size="x-small" color="blue">test</font></span><span><font size="x-small"> </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.</font></span><span><font size="x-small" color="blue">test</font></span><span><font size="x-small"> =org.apache.log4j.FileAppender </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.</font></span><span><font size="x-small" color="blue">test</font></span><span><font size="x-small"> .File=${myweb.root}/WEB-INF/log/</font></span><font size="x-small"><b><span>test.log</span></b><span> </span></font> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.</font></span><span><font size="x-small" color="blue">test</font></span><span><font size="x-small"> .layout=org.apache.log4j.PatternLayout </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.</font></span><span><font size="x-small" color="blue">test</font></span><span><font size="x-small"> .layout.ConversionPattern=%d %p [%c] - %m%n </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">也就是让</font></span><span><font size="x-small" color="red">cn.com.Test</font></span><span><font size="x-small"> 中 的logger 使用log4j.appender.</font></span><span><font size="x-small" color="blue">test</font></span><span><font size="x-small"> 所 做的配置。 </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">但是,如果在同一类中需要输出多个日志文件呢?其实道理是一样的,先在Test.java 中 定义: </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">private static Log logger1 = LogFactory.getLog("</font></span><span><font size="x-small" color="red">myTest1</font></span><span><font size="x-small"> "); </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">private static Log logger2 = LogFactory.getLog("</font></span><span><font size="x-small" color="red">myTest2</font></span><span><font size="x-small"> "); </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">然后在log4j.properties 中加入: </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.logger.</font></span><span><font size="x-small" color="red">myTest1</font></span><span><font size="x-small"> = DEBUG, </font></span><span><font size="x-small" color="blue">test1</font></span><span><font size="x-small"> </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.</font></span><span><font size="x-small" color="blue">test1</font></span><span><font size="x-small"> =org.apache.log4j.FileAppender </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.</font></span><span><font size="x-small" color="blue">test1</font></span><span><font size="x-small"> .File=${myweb.root}/WEB-INF/log/</font></span><font size="x-small"><b><span>test1.log</span></b><span> </span></font> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.</font></span><span><font size="x-small" color="blue">test1</font></span><span><font size="x-small"> .layout=org.apache.log4j.PatternLayout </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.</font></span><span><font size="x-small" color="blue">test1</font></span><span><font size="x-small"> .layout.ConversionPattern=%d %p [%c] - %m%n </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.logger.</font></span><span><font size="x-small" color="red">myTest2</font></span><span><font size="x-small"> = DEBUG, </font></span><span><font size="x-small" color="blue">test2</font></span><span><font size="x-small"> </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.</font></span><span><font size="x-small" color="blue">test2</font></span><span><font size="x-small"> =org.apache.log4j.FileAppender </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.</font></span><span><font size="x-small" color="blue">test2</font></span><span><font size="x-small"> .File=${myweb.root}/WEB-INF/log/</font></span><font size="x-small"><b><span>test2.log</span></b><span> </span></font> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.</font></span><span><font size="x-small" color="blue">test2</font></span><span><font size="x-small"> .layout=org.apache.log4j.PatternLayout </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.appender.</font></span><span><font size="x-small" color="blue">test2</font></span><span><font size="x-small"> .layout.ConversionPattern=%d %p [%c] - %m%n </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">也就是在用logger 时给它一个自定义的名字( 如 这里的"</font></span><span><font size="x-small" color="red">myTest1</font></span><span><font size="x-small"> ") ,然后在log4j.properties 中 做出相应配置即可。别忘了不同日志要使用不同的logger( 如输出到</font></span><font size="x-small"><b><span>test1.log </span></b><span>的 要用</span><b><span>logger1 </span></b><span>.info("abc")) 。 </span></font> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">还有一个问题,就是这些自定义的日志默认是同时输出到log4j.rootLogger 所 配置的日志中的,如何能只让它们输出到自己指定的日志中呢?别急,这里有个开关: </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">log4j.</font></span><font size="x-small"><b><span>additivity</span></b><span> .</span></font><span><font size="x-small" color="red">myTest1</font></span><span><font size="x-small"> = false </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small">它用来设置是否同时输出到log4j.rootLogger 所配置的 日志中,设为false 就不会输出到其它地方啦!注意这里的"</font></span><span><font size="x-small" color="red">myTest1</font></span><span><font size="x-small"> " 是你在程序中给logger 起的那个自定义的名字! </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">如果你说,我只是不想同时输出这个日志到log4j.rootLogger 所 配置的logfile 中,stdout 里我还想同时输出呢!那也好办,把你的log4j.logger.myTest1 = DEBUG, test1 改为下式就OK 啦! </font></span> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-right: 0in"> <span><font size="x-small">log4j.logger.</font></span><span><font size="x-small" color="red">myTest1</font></span><span><font size="x-small"> =DEBUG, test1, </font></span><b><span><font size="x-small" color="blue">stdout</font></span><span><font size="x-small"> </font></span></b> </p> <p style="margin-bottom: 0in; margin-top: 0in; margin-left: 0in; margin-right: 0in"> <span><font size="x-small"><br> </font></span> </p> <p>   </p>
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