考慮到log4j很久不更新、性能相對(duì)弱，以及一些項(xiàng)目本身的原因，經(jīng)過(guò)較為謹(jǐn)慎的考慮，決定改用logback。遷移還是比較順利的，花了1個(gè)小時(shí)左右就搞定了，做個(gè)簡(jiǎn)單的筆記。

(1) 首先去掉所有l(wèi)og4j相關(guān)的依賴，主要有：

<dependency>
  <groupId>log4j</groupId>
  <artifactId>log4j</artifactId>
</dependency>

以及：

<dependency>
  <groupId>org.slf4j</groupId>
  <artifactId>slf4j-log4j12</artifactId>
</dependency>

(2) 為項(xiàng)目添加以下依賴：

<!-- logback日志配置開始 -->
<dependency>
  <groupId>ch.qos.logback</groupId>
  <artifactId>logback-core</artifactId>
</dependency>
<dependency>
  <groupId>ch.qos.logback</groupId>
  <artifactId>logback-access</artifactId>
</dependency>
<dependency>
  <groupId>ch.qos.logback</groupId>
  <artifactId>logback-classic</artifactId>
</dependency>
<dependency>
  <groupId>org.slf4j</groupId>
  <artifactId>log4j-over-slf4j</artifactId>
</dependency>
<!-- logback日志配置結(jié)束 -->

(3) 刪除項(xiàng)目/src/main/resources目錄下的log4j.properties，并在該目錄添加logback.xml文件，logback.xml文件如下：

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
        <Target>System.out</Target>
        <encoder>
            <pattern>%date [%level] [%thread] %logger{80} [%file : %line] %msg%n</pattern>
        </encoder>
    </appender>
    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <encoder>
            <pattern>%date [%level] [%thread] %logger{80} [%file : %line] %msg%n</pattern>
        </encoder>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${catalina.home}/logs/yzf/sql%d{yyyy-MM-dd}.log</fileNamePattern>
            <!-- 保留 30天數(shù)據(jù)，默認(rèn)無(wú)限-->
            <MaxHistory>30</MaxHistory>
        </rollingPolicy>
    </appender>
    <logger name="org.springframework" level="INFO" />
    <logger name="org.apache" level="INFO" />

    <logger name="com.itmuch" level="WARN" />
    <root level="INFO">
        <appender-ref ref="CONSOLE" />
        <appender-ref ref="FILE" />
    </root>
</configuration>

TIPS

(1) log4j-over-slf4j與slf4j-log4j12不能共存，可能會(huì)引發(fā)異常，詳見http://www.tuicool.com/articles/INveIf 。

(2) slf4j-api、slf4j-log4j12以及l(fā)og4j之間的關(guān)系http://blog.csdn.net/tengdazhang770960436/article/details/18006127

(3) 參考文檔：http://blog.csdn.net/chenminghe271/article/details/38682493

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