What is the function of fileappender in logback?

from :

logback in FileAppender What function does it have ？

The following is about FileAppender Function introduction and description of , As shown below :

logback in FileAppender The function of :  Used to add logs to files  

FileAppender Attribute specification

<file>: Set the file name written , It can be a relative Directory , It can also be an absolute catalog , If the parent directory does not exist, it will be created automatically , No default 
<append>: When set to true, The log is appended to the end of the file , When set to false, Then empty the existing file , The default is true
<encoder>: Format the recorded events ( The specific parameters will be explained later )
<prudent>: When set to true, The log will be safely written to the file , Even if the others FileAppender Also writing to this file , Low efficiency , The default is  false.

example

// hold >=DEBUG Level logs are output to testFile.log
<configuration> 
　<appender name="FILE" class="ch.qos.logback.core.FileAppender"> 
　　　<file>javatestlog.log</file> 
　　　<append>true</append> 
　　　<encoder> 
　　　　　<pattern>%-4relative [%thread] %-5level %logger{35} - %msg%n</pattern> 
　　　</encoder> 
　</appender> 

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