轉自： http://ansn001.iteye.com/blog/1459277
c {
length }
lo {
length }
logger {
length }
輸出日志的logger名，可有一個整形參數，功能是縮短logger名，設置為0表示只輸入logger最右邊點符號之后的字符串。 Conversion specifier Logger name Result
|
| %logger | mainPackage.sub.sample.Bar | mainPackage.sub.sample.Bar |
| %logger{0} | mainPackage.sub.sample.Bar | Bar |
| %logger{5} | mainPackage.sub.sample.Bar | m.s.s.Bar |
| %logger{10} | mainPackage.sub.sample.Bar | m.s.s.Bar |
| %logger{15} | mainPackage.sub.sample.Bar | m.s.sample.Bar |
| %logger{16} | mainPackage.sub.sample.Bar | m.sub.sample.Bar |
| %logger{26} | mainPackage.sub.sample.Bar | mainPackage.sub.sample.Bar |