loggerName

c{length} 
lo{length} 
logger{length}

length=0 是类名

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contextName 
<configuration>
    <springProperty scope="context" name="APP_NAME" source="spring.application.name"/>
    <contextName>${APP_NAME}</contextName>
</configuration>

contextName
cn
 

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dateFormat

d{pattern} 
date{pattern}

%date{HH:mm:ss.SSS}

%d{yyyy-MM-dd HH:mm:ss.SSS}

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line 

L / line   (Thus, its use should be avoided unless execution speed is not an issue.)

输出行数

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method

M / method  (Thus, its use should be avoided unless execution speed is not an issue.)

输出方法名

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message

m / msg / message

输出日志内容

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level

p / le / level

输出日志级别

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thread

t / thread

输出线程名

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