我想手动管理logback配置 - 特别是我想在必要时创建一个具有FileAppender的新SiftingAppender。
我尝试创建所有对象,以便复制我之前使用过的相同XML配置。不幸的是,我不明白如何将文件缓冲器附加到siftappender。
这是我正在使用的代码:
LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory();
PatternLayoutEncoder encoder = new PatternLayoutEncoder();
encoder.setContext(loggerContext);
encoder.setPattern("<%d(yyyy-MM-dd HH:mm:ss)> | %.-1level | %msg %n");
encoder.start();
FileAppender<ILoggingEvent> fAppender = new FileAppender<ILoggingEvent>();
fAppender.setContext(loggerContext);
fAppender.setName(application + "_" + user);
fAppender.setFile(logUser);
fAppender.setAppend(true);
fAppender.setEncoder(encoder);
fAppender.start();
MDCBasedDiscriminator discriminator = new MDCBasedDiscriminator();
discriminator.setKey("userid");
discriminator.setDefaultValue("unknown");
discriminator.start();
LevelFilter lFilter = new LevelFilter();
lFilter.setLevel(Level.INFO);
lFilter.start();
// **HOW TO ATTACH fAppender on sAppender ????**
SiftingAppender sAppender = new SiftingAppender();
sAppender.setContext(loggerContext);
sAppender.setName(application + "_" + user + "_SIFTING");
sAppender.addFilter(lFilter);
sAppender.setDiscriminator(discriminator);
sAppender.start();
Logger logger = loggerContext.getLogger("test.mypackage");
logger.setAdditive(false);
logger.setLevel(Level.ALL);
logger.addAppender(sAppender);
答案 0 :(得分:2)
您必须创建一个appenderFactory并将此工厂添加到siftingAppender:
SiftingAppender siftAppender = new SiftingAppender();
AppenderFactory<ILoggingEvent> appenderFactory = new AppenderFactory<ILoggingEvent>() {
@Override
public Appender<ILoggingEvent> buildAppender(Context context, String discriminatingValue) throws JoranException {
/* Create your file appender here, with what ever options you need */
PatternLayoutEncoder ple = new PatternLayoutEncoder();
ple.setPattern("%date %level [%thread] %logger{10} [%file:%line] %msg%n");
ple.setContext(context);
ple.start();
FileAppender<ILoggingEvent> fileAppender = new FileAppender<ILoggingEvent>();
fileAppender.setFile(file);
fileAppender.setEncoder(ple);
fileAppender.setContext(context);
fileAppender.start();
return fileAppender;
}
};
/* set your factory to the sifting appender */
siftAppender.setAppenderFactory(appenderFactory );
siftAppender.setContext(context);
siftAppender.setName("TMP");
siftAppender.start();
logger.addAppender(siftAppender);
logger.setAdditive(true);