druid添加log4j2

引入依赖

    
    <dependency>
      <groupId>com.alibabagroupId>
      <artifactId>druidartifactId>
      <version>1.1.9version>
    dependency>

    <dependency>
      <groupId>org.apache.logging.log4jgroupId>
      <artifactId>log4j-slf4j-implartifactId>
      <version>${log4j2.version}version>
    dependency>
    
    <dependency>
      <groupId>org.apache.logging.log4jgroupId>
      <artifactId>log4j-coreartifactId>
      <version>${log4j2.version}version>
    dependency>

配置log4j2

配置数据源

<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        
        <property name="driverClassName" value="${db.driverClassName}"/>
        
        <property name="url" value="${db.url}"/>
        
        <property name="username" value="${db.username}"/>
        
        <property name="password" value="${db.password}"/>
        
        <property name="initialSize" value="3"/>
        
        <property name="minIdle" value="3"/>
        
        <property name="maxActive" value="20"/>
        
        <property name="maxWait" value="60000"/>
        
        <property name="filters" value="stat,wall"/>
        
        <property name="proxyFilters">
            <list>
                <ref bean="log4j2-filter"/>
            list>
        property>
    bean>

  在这里，由于日志的记录并不是由Druid执行的，而是由log4j2因而我们需要在这里指明proxyFilters为log4j2-filter

配置log4j2-filter

    <bean id="log4j2-filter" class="com.alibaba.druid.filter.logging.Log4j2Filter">
        <property name="connectionLogEnabled" value="false"/>
        <property name="statementLogEnabled" value="false"/>
        <property name="resultSetLogEnabled" value="true"/>
        <property name="statementExecutableSqlLogEnable" value="true"/>
    bean>

  在这里，我们开发项目时有时非常想看在控制台中打印的SQL信息，所以说我们会将resultSetLogEnabled设置为true，如果不想查看，那么我们只需要将其更改为false即可。

配置log4j2.xml

  在Druid官网中说，下面的配置是可以在项目中直接拿来使用的，所以说我就不做什么修改，直接将其贴出来，如果想看源文档的话，可以访问Druid中使用log4j2进行日志输出

<configuration status="OFF">
    <appenders>

        <Console name="Console" target="SYSTEM_OUT">
            
            <ThresholdFilter level="DEBUG" onMatch="ACCEPT" onMismatch="DENY"/>
            <PatternLayout pattern="[%d{HH:mm:ss.SSS}] %-5level %class{36} %L %M - %msg%xEx%n"/>
        Console>

        
        
        <RollingFile name="RollingFileDebug" fileName="./logs/debug.log"
                     filePattern="logs/$${date:yyyy-MM}/debug-%d{yyyy-MM-dd}-%i.log.gz">
            <Filters>
                <ThresholdFilter level="DEBUG"/>
                <ThresholdFilter level="INFO" onMatch="DENY" onMismatch="NEUTRAL"/>
            Filters>
            <PatternLayout
                    pattern="[%d{yyyy-MM-dd HH:mm:ss}] %-5level %class{36} %L %M - %msg%xEx%n"/>
            <Policies>
                <SizeBasedTriggeringPolicy size="500 MB"/>
                <TimeBasedTriggeringPolicy/>
            Policies>
        RollingFile>

        
        <RollingFile name="RollingFileInfo" fileName="./logs/info.log"
                     filePattern="logs/$${date:yyyy-MM}/info-%d{yyyy-MM-dd}-%i.log.gz">
            <Filters>
                
                <ThresholdFilter level="INFO"/>
                <ThresholdFilter level="WARN" onMatch="DENY" onMismatch="NEUTRAL"/>
            Filters>
            <PatternLayout
                    pattern="[%d{yyyy-MM-dd HH:mm:ss}] %-5level %class{36} %L %M - %msg%xEx%n"/>
            <Policies>
                <SizeBasedTriggeringPolicy size="500 MB"/>
                <TimeBasedTriggeringPolicy/>
            Policies>
        RollingFile>

        
        <RollingFile name="RollingFileWarn" fileName="./logs/warn.log"
                     filePattern="logs/$${date:yyyy-MM}/warn-%d{yyyy-MM-dd}-%i.log.gz">
            <Filters>
                <ThresholdFilter level="WARN"/>
                <ThresholdFilter level="ERROR" onMatch="DENY" onMismatch="NEUTRAL"/>
            Filters>
            <PatternLayout
                    pattern="[%d{yyyy-MM-dd HH:mm:ss}] %-5level %class{36} %L %M - %msg%xEx%n"/>
            <Policies>
                <SizeBasedTriggeringPolicy size="500 MB"/>
                <TimeBasedTriggeringPolicy/>
            Policies>
        RollingFile>

        
        <RollingFile name="RollingFileError" fileName="./logs/error.log"
                     filePattern="logs/$${date:yyyy-MM}/error-%d{yyyy-MM-dd}-%i.log.gz">
            <ThresholdFilter level="ERROR"/>
            <PatternLayout
                    pattern="[%d{yyyy-MM-dd HH:mm:ss}] %-5level %class{36} %L %M - %msg%xEx%n"/>
            <Policies>
                <SizeBasedTriggeringPolicy size="500 MB"/>
                <TimeBasedTriggeringPolicy/>
            Policies>
        RollingFile>

        
        <RollingFile name="druidSqlRollingFile" fileName="./logs/druid-sql.log"
                     filePattern="logs/$${date:yyyy-MM}/api-%d{yyyy-MM-dd}-%i.log.gz">
            <PatternLayout pattern="[%d{yyyy-MM-dd HH:mm:ss}] %-5level %L %M - %msg%xEx%n"/>
            <Policies>
                <SizeBasedTriggeringPolicy size="500 MB"/>
                <TimeBasedTriggeringPolicy/>
            Policies>
        RollingFile>
    appenders>

    <loggers>
        <root level="DEBUG">
            <appender-ref ref="Console"/>
            <appender-ref ref="RollingFileInfo"/>
            <appender-ref ref="RollingFileWarn"/>
            <appender-ref ref="RollingFileError"/>
            <appender-ref ref="RollingFileDebug"/>
        root>

        
        <logger name="druid.sql.Statement" level="debug" additivity="false">
            <appender-ref ref="druidSqlRollingFile"/>
        logger>
        <logger name="druid.sql.Statement" level="debug" additivity="false">
            <appender-ref ref="druidSqlRollingFile"/>
        logger>

        
        <Logger name="org.apache.catalina.startup.DigesterFactory" level="error" />
        <Logger name="org.apache.catalina.util.LifecycleBase" level="error" />
        <Logger name="org.apache.coyote.http11.Http11NioProtocol" level="warn" />
        <logger name="org.apache.sshd.common.util.SecurityUtils" level="warn"/>
        <Logger name="org.apache.tomcat.util.net.NioSelectorPool" level="warn" />
        <Logger name="org.crsh.plugin" level="warn" />
        <logger name="org.crsh.ssh" level="warn"/>
        <Logger name="org.eclipse.jetty.util.component.AbstractLifeCycle" level="error" />
        <Logger name="org.hibernate.validator.internal.util.Version" level="warn" />
        <logger name="org.springframework.boot.actuate.autoconfigure.CrshAutoConfiguration" level="warn"/>
        <logger name="org.springframework.boot.actuate.endpoint.jmx" level="warn"/>
        <logger name="org.thymeleaf" level="warn"/>
    loggers>
configuration>

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