用log4j
配置文件:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration PUBLIC "-//log4j/log4j Configuration//EN" "log4j.dtd">
<log4j:configuration xmlns:log4j="
http://jakarta.apache.org/log4j/"> <appender name="RollingAppender" class="org.apache.log4j.DailyRollingFileAppender">
<param name="File" value="logs/app.log" />
<param name="Encoding" value="UTF-8" />
<param name="DatePattern" value="'.'yyyy-MM-dd" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="[%p] %d %c %M - %m%n"/>
</layout>
</appender>
<root>
<priority value="DEBUG"/>
<appender-ref ref="RollingAppender" />
</root>
</log4j:configuration>
运用
先实例化
运用