Latest revision as of 19:59, 15 November 2017

External

log4j calls its output format layout. Most commonly used is the pattern layout.

Log4j Pattern Layout

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 =Overview=
-log4j calls its output format ''layout''. Most commonly used is the [[#Pattern_Layout|pattern layout]].
+log4j calls its output format ''layout''. Most commonly used is the [[Log4j_Pattern_Layout#Overview|pattern layout]].
 =Pattern Layout=
-{{External|http://logging.apache.org/log4j/2.x/manual/layouts.html#PatternLayout}}
+{{Internal|Log4j Pattern Layout|Log4j Pattern Layout}}
-The pattern layout is defined by a ''conversion pattern string'', where various element of a log event can be referred and the way they are intended to be displayed in a log file specified. The conversion pattern is closely related to the conversion pattern of the [[printf]] function in C. The conversion pattern is composed of:
-* [[#Literal_Text|literal text]]
-* [[#Conversion_Specifier|conversion specifiers]]
-==Literal Text==
-Literal text may include special characters (\t, \n \r \f). '\\' can be used to insert a backslash in the output.
-==Conversion Specifier==
-Each ''conversion specifier'' starts with a percent sign ('%') and it is followed by an optional '[[#Format_Modifier|format modifier]] and a ''conversion character''.
-==Format Modifier==
-A ''format modifier'' modifies how the data generated by the pattern layout element