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  • druid添加log4j2

        引入依赖
        配置log4j2
            配置数据源
            配置log4j2-filter
            配置log4j2.xml

    引入依赖

        <!-- druid -->
        <dependency>
          <groupId>com.alibaba</groupId>
          <artifactId>druid</artifactId>
          <version>1.1.9</version>
        </dependency>

        <dependency>
          <groupId>org.apache.logging.log4j</groupId>
          <artifactId>log4j-slf4j-impl</artifactId>
          <version>${log4j2.version}</version>
        </dependency>
        <!--log4j2-->
        <dependency>
          <groupId>org.apache.logging.log4j</groupId>
          <artifactId>log4j-core</artifactId>
          <version>${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">
            <!--MySQL驱动-->
            <property name="driverClassName" value="${db.driverClassName}"/>
            <!--MySQL连接的url-->
            <property name="url" value="${db.url}"/>
            <!--连接数据库的名称-->
            <property name="username" value="${db.username}"/>
            <!--连接数据库的密码-->
            <property name="password" value="${db.password}"/>
            <!--初始化的大小-->
            <property name="initialSize" value="3"/>
            <!--数据库连接池——最小空余的数量-->
            <property name="minIdle" value="3"/>
            <!--数据库连接池——最大的活跃数量-->
            <property name="maxActive" value="20"/>
            <!--最长等待时间,一旦超过该时间则认为是超时-->
            <property name="maxWait" value="60000"/>
            <!--过滤器-->
            <property name="filters" value="stat,wall"/>
            <!--proxyFilters是代理filter的意思-->
            <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

    <!--配置log4j2的Log4j2Filter-->
        <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>

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      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

    <?xml version="1.0" encoding="UTF-8"?>
    <configuration status="OFF">
        <appenders>

            <Console name="Console" target="SYSTEM_OUT">
                <!--只接受程序中DEBUG级别的日志进行处理-->
                <ThresholdFilter level="DEBUG" onMatch="ACCEPT" onMismatch="DENY"/>
                <PatternLayout pattern="[%d{HH:mm:ss.SSS}] %-5level %class{36} %L %M - %msg%xEx%n"/>
            </Console>

            <!--处理DEBUG级别的日志,并把该日志放到logs/debug.log文件中-->
            <!--打印出DEBUG级别日志,每次大小超过size,则这size大小的日志会自动存入按年份-月份建立的文件夹下面并进行压缩,作为存档-->
            <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>

            <!--处理INFO级别的日志,并把该日志放到logs/info.log文件中-->
            <RollingFile name="RollingFileInfo" fileName="./logs/info.log"
                         filePattern="logs/$${date:yyyy-MM}/info-%d{yyyy-MM-dd}-%i.log.gz">
                <Filters>
                    <!--只接受INFO级别的日志,其余的全部拒绝处理-->
                    <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>

            <!--处理WARN级别的日志,并把该日志放到logs/warn.log文件中-->
            <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>

            <!--处理error级别的日志,并把该日志放到logs/error.log文件中-->
            <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>

            <!--druid的日志记录追加器-->
            <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>

            <!--记录druid-sql的记录-->
            <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>

            <!--log4j2 自带过滤日志-->
            <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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  • 原文地址:https://www.cnblogs.com/interdrp/p/15439075.html
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