Log4j 配置

方式一 ：

web.xml  中添加

  <context-param>
    <param-name>log4jConfigLocation</param-name>
    <param-value>classpath:log4j.xml</param-value>
    <description>log4j configure</description>
  </context-param>
  <context-param>
    <param-name>log4jRefreshInterval</param-name>
    <param-value>60000</param-value>
    <description>log4jRefreshInterval configure</description>
  </context-param>

log4j.xml 文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="">

  <appender name="filelog_daily" class="org.apache.log4j.DailyRollingFileAppender">
    <param name="File" value="logs/telecom/daily.log"/>
    <param name="DatePattern" value="'daily.'yyyy-MM-dd'.log'"/>
    <layout class="org.apache.log4j.PatternLayout">
      <param name="ConversionPattern" value="[%d{yyyy-MM-dd HH:mm:ss\} %-5p] (%l) - %m%n"/>
    </layout>
  </appender>

  <appender name="console" class="org.apache.log4j.ConsoleAppender">
    <layout class="org.apache.log4j.PatternLayout">
      <param name="ConversionPattern" value="[%d{yyyy-MM-dd HH:mm:ss\} %-5p] (%l) - %m%n"/>
    </layout>
  </appender>

  <root>
    <priority value="info"/>
    <appender-ref ref="console"/>
    <appender-ref ref="filelog_daily"/>
  </root>

</log4j:configuration>