Geek Answers Handbook

Using Properties in Log4J2 YAML

I am trying to use properties in log4j2.yaml. This is the equivalent of XML.

<Configuration>
<Properties>
    <Property name="log-path">logs</Property>
    <Property name="archive">${log-path}/archive</Property>
</Properties>
<Appenders>
. . .

I have tried this.

Configutation:
  name: Default
  properties:
    property:
      name: log-path
      value: "logs"
      name: archive
      value: ${log-path}/archive
  Appenders:

But the properties are not collected. For example, the following code creates a $ {log-path} folder to store a log file instead of the required log .

fileName: ${log-path}/rollingfile.log

What am I doing wrong?

+2
source share
1 answer

If you look at the log4j2.json file, you will see that the key propertymust have a value that is a list of (again) key-value pairs. Translated to YAML, this is similar to the beginning of this file:

configuration:
  name: Default
  properties:
    property:
    - name: log-path
      value: logs
    - name: archive
      value: ${log-path}/archive
  appenders:
    Console:
      PatternLayout:
        pattern: '[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n'
      name: Console-Appender
      target: SYSTEM_OUT
    File:
      PatternLayout:
        pattern: '[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n'
      fileName: ${log-path}/logfile.log
      name: File-Appender
    RollingFile:
      DefaultRolloverStrategy:
        max: '30'
      PatternLayout:
        pattern: '[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n'
      Policies:
        SizeBasedTriggeringPolicy:
          size: 1 KB
      fileName: ${log-path}/rollingfile.log
      filePattern: ${archive}/rollingfile.log.%d{yyyy-MM-dd-hh-mm}.gz
      name: RollingFile-Appender
  loggers:
    logger:
      additivity: 'false'
      appender-ref:
      - level: info
        ref: Console-Appender
      - level: error
        ref: File-Appender
      - level: debug
        ref: RollingFile-Appender
      level: debug
      name: guru.springframework.blog.log4j2json
    root:
      appender-ref:
        ref: Console-Appender
      level: debug

(the above was converted using yaml from-json log4j2.json, the command was installed from ruamel.yaml.cmd

, , , XML YAML. , YAML JSON .

${} YAML, , , .

+2

More articles:


All Articles