以编程方式配置LogBack appender

问题描述：

我在logback.xml中定义了一个logback appender，它是一个DB appender，但我很好奇是否有任何方法可以使用我自己定义为bean的连接池在java中配置appender。

I have a logback appender defined in the logback.xml, it's a DB appender, but I'm curious if there is any way to configure the appender in java using my own connection pool defined as a bean.

我发现类似的事情，但从来没有真正的答案。

I find similar things, but never the actual answer.

答

这是一个适合我的简单示例（请注意我在本例中使用FileAppender）

Here a simple example that works for me (note that I use the FileAppender in this example)

import org.slf4j.LoggerFactory;

import ch.qos.logback.classic.Level;
import ch.qos.logback.classic.Logger;
import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.classic.encoder.PatternLayoutEncoder;
import ch.qos.logback.classic.spi.ILoggingEvent;
import ch.qos.logback.core.FileAppender;

public class Loggerutils {

    public static void main(String[] args) {
          Logger foo = createLoggerFor("foo", "foo.log");
          Logger bar = createLoggerFor("bar", "bar.log");
          foo.info("test");
          bar.info("bar");
    }

    private static Logger createLoggerFor(String string, String file) {
          LoggerContext lc = (LoggerContext) LoggerFactory.getILoggerFactory();
          PatternLayoutEncoder ple = new PatternLayoutEncoder();

          ple.setPattern("%date %level [%thread] %logger{10} [%file:%line] %msg%n");
          ple.setContext(lc);
          ple.start();
          FileAppender<ILoggingEvent> fileAppender = new FileAppender<ILoggingEvent>();
          fileAppender.setFile(file);
          fileAppender.setEncoder(ple);
          fileAppender.setContext(lc);
          fileAppender.start();

          Logger logger = (Logger) LoggerFactory.getLogger(string);
          logger.addAppender(fileAppender);
          logger.setLevel(Level.DEBUG);
          logger.setAdditive(false); /* set to true if root should log too */

          return logger;
    }

}

以编程方式配置LogBack appender

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