log4J配置及在web.xml文件中的配置

web.xml中的相关配置

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<!-- webAppRootKey：值缺省为webapp.root，当tomcat下部署多个应用时(每个都用到了log4j)，         每个应用的web.xml中都要配置该参数，该参数与Log4j.xml文件中的${webapp.root}         否则每个应用的webAppRootKey值都相同，就会引起冲突      -->     <context-param>         <param-name>webAppRootKey</param-name>         <param-value>webapp.root</param-value>     </context-param>           <!-- log4jConfigLocation：log4j配置文件存放路径 -->     <context-param>         <param-name>log4jConfigLocation</param-name>         <param-value>/WEB-INF/conf/log4j.xml</param-value>     </context-param>     <listener>         <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>     </listener>

log4j.xml

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<?xmlversion="1.0"encoding="UTF-8"?> <!DOCTYPElog4j:configuration SYSTEM "log4j.dtd">   <log4j:configurationxmlns:log4j="http://jakarta.apache.org/log4j/">       <!-- 控制台的日志记录 -->     <appendername="console"class="org.apache.log4j.ConsoleAppender">         <paramname="Target"value="System.out"/>         <layoutclass="org.apache.log4j.PatternLayout">             <paramname="ConversionPattern"value="%-5p: %c - %m%n"/>         </layout>     </appender>         <!-- 文件的日志记录 -->     <appendername="file"class="org.apache.log4j.DailyRollingFileAppender">         <paramname="File"value="${webapp.root}/logs/testdata.log"/>         <paramname="Append"value="true"/>         <paramname="DatePattern"value="'.'yyyy-MM-dd"/>         <layoutclass="org.apache.log4j.PatternLayout">             <paramname="ConversionPattern"value="%d{yyyy-MM-dd HH:mm:ss,SSS} [%-5p]: %c - %m%n"/>         </layout>     </appender>     <!-- name要对应字节码文件所在的包路径，只会记录该包路径下的代码的日志 -->     <loggername="com.bocloud">         <levelvalue="debug,info,error"/>         <appender-refref="file"/>         <appender-refref="console"/>     </logger>           <!-- Root Logger -->     <root>         <priorityvalue="debug"/>         <appender-refref="console"/>     </root>       </log4j:configuration>