如何使用SLF4J和Log4j2记录致命(或任何自定义日志级别)

问题描述

我有那些具体的要求:

• 需要能够登录 FATAL 级别
• 需要使用 SLF4J
• 需要使用 Log4j2

现在，这是我的实现:

final Logger logger = LoggerFactory.getLogger(HelloWorld.class);
final Marker marker = MarkerFactory.getMarker("FATAL");
logger.error(marker, "!!! Fatal World !!!");

这是我的 PatternLayout (以Yaml为单位):

PatternLayout:
  Pattern: "%d{ISO8601_BASIC} %-5level %marker [%t] %logger{3.} - %msg%n"

这是我的日志输出:

20150506T155705,158 ERROR FATAL [main] - !!! Fatal World !!!

您对如何有效地从日志输出中删除错误"有任何想法吗?

Do you have any idea about how to efficiently to remove the "ERROR" from the log output?

非常感谢您

推荐答案

这是我和一些同事一起提出的最接近的解决方案:

Here's the closest working solution I came with some colleagues :

1. 使用 SLF4J 标记创建 Fatal 标记类.
2. 使用 RoutingAppender ，使用标记作为路由模式:"$$ {marker:}"
3. 配置一个 Fatal特定附加程序，该附加程序具有自己的PatternLayout，该PatternLayout不包含LogLevel，而是一个硬编码的FATAL级别.

1. Create a Fatal Marker class using SLF4J Markers.
2. Using a RoutingAppender, use the Marker as the routing pattern: "$${marker:}"
3. Configure a Fatal-specific appender that has its own PatternLayout that doesn't include the LogLevel but a hardcoded FATAL level.

这是 Java 示例:

Marker fatal = MarkerFactory.getMarker("FATAL");
// Usage example
final Logger logger = LoggerFactory.getLogger(FatalLogger.class);
logger.log(fatal, "this is a fatal message");

// Log sample :
20150514T115144,279  FATAL [main] FatalLogger - this is a fatal message

这是 YAML 示例:

Configuration:
  status: debug

  Appenders:
    RandomAccessFile:
      - name: APPLICATION_APPENDER
        fileName: logs/application.log
        PatternLayout:
          Pattern: "%d{ISO8601_BASIC} %-5level %msg%n"
      - name: FATAL_APPENDER
        fileName: logs/application.log
        PatternLayout:
          Pattern: "%d{ISO8601_BASIC} FATAL %msg%n"

    Routing:
      name: ROUTING_APPENDER
      Routes:
        pattern: "$${marker:}"
        Route:
        - key: FATAL
          ref: FATAL_APPENDER
        - ref: APPLICATION_APPENDER #DefaultRoute

  Loggers:
    Root:
      level: trace
      AppenderRef:
        - ref: ROUTING_APPENDER

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