Eclipse启动项目，查看log4j日志

很多时候，我们图方便，直接在Eclipse启动项目，有时候排查问题，在console看日志不方便，那怎样在log4j查看日志呢，只要在log4j配置 把log4j指定到具体位置 即可 

### set log levels ### 
log4j.rootLogger = debug , Console , D
#Console
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

#output2file
log4j.appender.D = org.apache.log4j.DailyRollingFileAppender 
log4j.appender.D.File = E:\\teenagers-report.log 
log4j.appender.D.Append = true 
log4j.appender.D.Threshold = INFO \#\# \u8F93\u51FAinfo\u7EA7\u522B\u4EE5\u4E0A\u7684\u65E5\u5FD7 
log4j.appender.D.layout = org.apache.log4j.PatternLayout 
log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n

log4j.logger.com.ibatis=DEBUG
log4j.logger.com.ibatis.common.jdbc.SimpleDataSource=DEBUG
log4j.logger.com.ibatis.common.jdbc.ScriptRunner=DEBUG
log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate=DEBUG
log4j.logger.java.sql.Connection=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.PreparedStatement=D

log4j.appender.D.File = E:\\teenagers-report.log