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>