tomcat5.5 不能打印启动日志
从tomcat的官网上下载了一个tomcat5.5免安装版，结果发现这个tomcat启动时，什么日志也打，这让我很崩溃，都不知有没有主启动成功。后来从网上查询，要在common/classes下面加入一个log4j.properties文件就可以了。从网上找到一个模版，如下：
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log4j.rootLogger=info,Console,R??????
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log4j.appender.Console=org.apache.log4j.ConsoleAppender?????
log4j.appender.Console.layout=org.apache.log4j.PatternLayout?????
#log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p %c - %m%n?????
log4j.appender.Console.layout.ConversionPattern=%d{yy-MM-dd HH:mm:ss} %5p %c{1}:%L - %m%n??????
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log4j.appender.R=org.apache.log4j.DailyRollingFileAppender?????
log4j.appender.R.File=${catalina.home}/logs/tomcat.log??????
log4j.appender.R.layout=org.apache.log4j.PatternLayout?????
log4j.appender.R.layout.ConversionPattern=%d{yyyy.MM.dd HH:mm:ss} %5p %c{1}(%L):? %m%n??????
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log4j.logger.org.apache=info, R?????
log4j.logger.org.apache.catalina.core.ContainerBase.[Catalina].[localhost]=DEBUG, R??????
log4j.logger.org.apache.catalina.core=info, R?????
log4j.logger.org.apache.catalina.session=info, R?????
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log4j.rootLogger=info,Console,R???
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log4j.appender.Console=org.apache.log4j.ConsoleAppender??
log4j.appender.Console.layout=org.apache.log4j.PatternLayout??
#log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p %c - %m%n??
log4j.appender.Console.layout.ConversionPattern=%d{yy-MM-dd HH:mm:ss} %5p %c{1}:%L - %m%n???
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log4j.appender.R=org.apache.log4j.DailyRollingFileAppender??
log4j.appender.R.File=${catalina.home}/logs/tomcat.log???
log4j.appender.R.layout=org.apache.log4j.PatternLayout??
log4j.appender.R.layout.ConversionPattern=%d{yyyy.MM.dd HH:mm:ss} %5p %c{1}(%L):? %m%n???
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log4j.logger.org.apache=info, R??
log4j.logger.org.apache.catalina.core.ContainerBase.[Catalina].[localhost]=DEBUG, R???
log4j.logger.org.apache.catalina.core=info, R??
log4j.logger.org.apache.catalina.session=info, R??
