slf4j 替代 log4j common-logging 配置

很多第三方库使用log4j或common-logging作为日志组件，使用slf4j统一日志输出：

log4j-over-slf4j-1.x.x.jar  用于替代 log4j
jcl-over-slf4j-1.x.x.jar 用于替代 common-logging
[还有其他对应的jdk/android/...日志匹配库]

classpath中加入：

jcl-over-slf4j-1.x.x.jar
log4j-over-slf4j-1.x.x.jar
logback-classic-1.xx.jar
logback-core-1.xx.jar
slf4j-api-1.xx.jar

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

protected Logger log = LoggerFactory.getLogger(getClass());

logback-test.xml:

<configuration scan="false" debug="false">

  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <encoder>
      <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %C.%M %L - %msg%n</pattern>
    </encoder>
  </appender>

  <logger name="com.crop" level="debug"/>

  <root level="info">
    <appender-ref ref="STDOUT" />
  </root>
</configuration>

logback.xml

<configuration scan="false" debug="false">
    <!--
    <property file="app.properties" />
    -->

    <contextName>App</contextName>

    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>logs/App.%d{yyyy-MM-dd}.log</fileNamePattern>
            <maxHistory>180</maxHistory>
        </rollingPolicy>

        <encoder>
            <pattern>%d [%thread] %-5level %C.%M %L - %msg%n</pattern>
        </encoder>
    </appender>

    <logger name="com.crop" level="debug"/>

    <root level="info">
        <appender-ref ref="FILE"/>
    </root>
</configuration>