导入log4j的jar。

配置web.xml文件：

<context-param>

<param-name>log4jConfigLocation</param-name>

<param-value>classpath:config/log4j.properties</param-value>

</context-param>

<listener>

<listener-class>

org.springframework.web.util.Log4jConfigListener

</listener-class>

</listener>

log4j.properties的配置文件内容为：

### 设置###

log4j.rootLogger = debug,stdout,D,E

### 输出信息到控制抬 ###

log4j.appender.stdout = org.apache.log4j.ConsoleAppender

log4j.appender.stdout.Target = System.out

log4j.appender.stdout.layout = org.apache.log4j.PatternLayout

log4j.appender.stdout.layout.ConversionPattern = [%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n

### 输出DEBUG 级别以上的日志文件设置 ###

log4j.appender.D = org.apache.log4j.DailyRollingFileAppender

log4j.appender.D.File = vincent_player_debug.log

log4j.appender.D.Append = true

log4j.appender.D.Threshold = DEBUG

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

### 输出ERROR 级别以上的日志文件设置 ###

log4j.appender.E = org.apache.log4j.DailyRollingFileAppender

log4j.appender.E.File = vincent_player_error.log

log4j.appender.E.Append = true

log4j.appender.E.Threshold = ERROR

log4j.appender.E.layout = org.apache.log4j.PatternLayout

log4j.appender.E.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n