log4j:WARN No appenders could be found for logger (jdbc.audit).

log를 출력하는데 에러가 발생하고 출력이 되지 않아 해결 방법을 정리합니다.

에러 원인

log4j.xml이나 log4j.properties를 찾지 못해서 생기는 에러입니다.

해결 방법 

WEB-INF/classes에 log4j.xml로 이동합니다.

web.xml에 log4j.xml에 등록합니다.

web.xml

    <context-param>

        <param-name>log4jConfigLocation</param-name>

        <param-value>/WEB-INF/classes/log4j.xml</param-value>

    </context-param>

log4j.xml

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">

<log4j:configuration

    xmlns:log4j="http://jakarta.apache.org/log4j/">

    <!-- Appenders -->

    <appender name="console-infolog"

        class="org.apache.log4j.ConsoleAppender">

        <layout class="org.apache.log4j.PatternLayout">

            <param name="ConversionPattern" value="%d %5p %m%n" />

        </layout>

    </appender>

    <appender name="CONSOLE"

        class="org.apache.log4j.ConsoleAppender">

        <layout class="org.apache.log4j.PatternLayout">

            <param name="ConversionPattern"

                value="%p - %C{1}.%M(%L) | %m%n" />

        </layout>

    </appender>

    <appender name="FILEAPPENDER"

        class="org.apache.log4j.RollingFileAppender">

        <param name="append" value="false" />

        <param name="file" value="kr/Sunshiny/logs/Execute_free.log" />

        <param name="maxFileSize" value="10MB" />

        <param name="maxBackupIndex" value="10" />

        <layout class="org.apache.log4j.PatternLayout">

            <param name="ConversionPattern"

                value="%d{MMM dd hh:mm:ss aa} %p - %C{1}.%M(%L) | %m%n" />

        </layout>

    </appender>

    <appender name="ADVICECONSOLE"

        class="org.apache.log4j.ConsoleAppender">

        <layout class="org.apache.log4j.PatternLayout">

            <param name="ConversionPattern" value="%p - %m%n" />

        </layout>

    </appender>

    <appender name="CONSOLE_SERVER"

        class="org.apache.log4j.ConsoleAppender">

        <layout class="org.apache.log4j.PatternLayout">

            <param name="ConversionPattern"

                value="%p[%d{yyy-MM-dd HH:mm:ss}] | %m%n" />

        </layout>

    </appender>

    <!-- logger 의 name 에 정의된 패키지의 하위를 디버깅 함. -->

    <logger name="com.otrodevym">

        <level value="DEBUG" />

    </logger>

    <logger name="org.apache">

        <level value="ERROR" />

    </logger>

    <logger name="java.sql.Connection">

        <level value="ERROR" />

    </logger>

    <logger name="java.sql.Statement">

        <level value="ERROR" />

    </logger>

    <logger name="java.sql.PreparedStatement">

        <level value="INFO" />

    </logger>

    <logger name="java.sql.ResultSet">

        <level value="INFO" />

    </logger>

    <category name="log4j.logger.org.hibernate.SQL">

        <priority value="ERROR" />

    </category>

    <category name="log4j.logger.org.hibernate.transaction">

        <priority value="INFO" />

    </category>

    <category name="log4j.logger.org.hibernate.jdbc">

        <priority value="ERROR" />

    </category>

    <root>

        <level value="ERROR" />

        <appender-ref ref="CONSOLE" />

    </root>

</log4j:configuration>

LoggerTest.java

package com.otrodevym.mfaw.common;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.test.context.ContextConfiguration;

import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import org.springframework.test.context.web.WebAppConfiguration;

@RunWith(SpringJUnit4ClassRunner.class)

@ContextConfiguration(locations="file:src/main/webapp/WEB-INF/spring/**/**.xml")

@WebAppConfiguration

public class LoggerTest {

    private final Logger logger = LoggerFactory.getLogger(LoggerTest.class);

    

    @Test

    public void LoggerTest() {

        logger.info("---info");

        logger.debug("---debug");

        logger.error("---error");

        logger.warn("-----warn");

        logger.trace("----trace");

        

    }

}

출력