Java 7 introduced the Method Handles with the java.lang.invoke.MethodHandle and java.lang.invoke.MethodHandles classes. The Well-Grounded Java Developer (which I have previously reviewed) covers ...
今週はjava.util.loggingパッケージ、つまりLogging APIの変更点について紹介します。とはいっても、違いは1点だけです。 Logging APIでログを取るにはjava.util.logging.Loggerクラスを使用します。通常、ログは適切な名前空間により区別されます。名前空間によって区別 ...
Groovy 1.8 was recently released with a long list of new features. I focus on one of these new features, logger injection via new AST Transformations, in this post. Groovy 1.8 provides AST ...
大致流程:应用app =》日志记录器Logger =》日志处理器Handler =》完成日志输出。其中,Logger与Handler过程中,还穿插着日志过滤器Filter =》日志格式化组件Formatter =》日志输出级别Level等组件。 在resources下创建log4j.xml或者log4j.properties,如果都存在,则以xml为准。
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