首先先創建三張表，按照自己的需求創建

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j=‘http://jakarta.apache.org/log4j/‘>
    <appender name="STDOUT" class="org.apache.log4j.ConsoleAppender">
        <layout class="org.apache.log4j.PatternLayout"
 
>
            <param name="ConversionPattern" value="[%d{yyyy-MM-dd HH:mm:ss}] %X{ip} %t %p %c————%X{name} %m%n" />
        </layout>
    </appender>

    <appender name="INFO" class="org.apache.log4j.jdbc.JDBCAppender">
        <param name="URL" value="jdbc:mysql://IP:3306/log_repository?useUnicode=true&amp;characterEncoding=UTF-8"
 
/>
        <param name="user" value="****"/> 
        <param name="password" value="****"/> 
        <param name="driver" value="com.mysql.jdbc.Driver"/>
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="INSERT INTO sys_log_info(userId,name,log_time,log_level,location,message)VALUES(‘%X{userId}‘,‘%X{name}‘,‘%d{yyyy-MM-dd HH:mm:ss}‘,‘%p‘,‘%l‘,‘%m‘)"
 
/>
        </layout>
        <filter class="org.apache.log4j.varia.LevelRangeFilter">
            <!-- 設置日誌輸出的最小級別 -->
            <param name="LevelMin" value="INFO" />
            <!-- 設置日誌輸出的最大級別 -->
            <param name="LevelMax" value="INFO" />
        </filter>
    </appender>
    
    <appender name="WARN" class="org.apache.log4j.jdbc.JDBCAppender">
        <param name="URL" value="jdbc:mysql://IP:3306/log_repository?useUnicode=true&amp;characterEncoding=UTF-8"/>
        <param name="user" value="****"/> 
        <param name="password" value="****"/> 
        <param name="driver" value="com.mysql.jdbc.Driver"/>
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="INSERT INTO sys_log_warn(userId,name,log_time,log_level,location,message)VALUES(‘%X{userId}‘,‘%X{name}‘,‘%d{yyyy-MM-dd HH:mm:ss}‘,‘%p‘,‘%l‘,‘%m‘)"/>
        </layout>
        <filter class="org.apache.log4j.varia.LevelRangeFilter">
            <!-- 設置日誌輸出的最小級別 -->
            <param name="LevelMin" value="WARN" />
            <!-- 設置日誌輸出的最大級別 -->
            <param name="LevelMax" value="WARN" />
        </filter>
    </appender>
    
    <appender name="ERROR" class="org.apache.log4j.jdbc.JDBCAppender">
        <param name="URL" value="jdbc:mysql://IP:3306/log_repository?useUnicode=true&amp;characterEncoding=UTF-8"/>
        <param name="user" value="****"/> 
        <param name="password" value="****"/> 
        <param name="driver" value="com.mysql.jdbc.Driver"/>
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="INSERT INTO sys_log_error(userId,name,log_time,log_level,location,message)VALUES(‘%X{userId}‘,‘%X{name}‘,‘%d{yyyy-MM-dd HH:mm:ss}‘,‘%p‘,‘%l‘,‘%m‘)"/>
        </layout>
        <filter class="org.apache.log4j.varia.LevelRangeFilter">
            <!-- 設置日誌輸出的最小級別 -->
            <param name="LevelMin" value="ERROR" />
            <!-- 設置日誌輸出的最大級別 -->
            <param name="LevelMax" value="ERROR" />
        </filter>
    </appender>

    <root>
        <priority value="debug" />
        <appender-ref ref="STDOUT" />
        <appender-ref ref="INFO" />
        <appender-ref ref="WARN" />
        <appender-ref ref="ERROR" />
    </root>
</log4j:configuration>

Log4j.xml分級別存儲日誌到數據庫