JUL

JUL(java util logging) #

• 配置模板 #

  vim $(dirname $(which java))/../jre/lib/logging.properties
vim ``dirname $(which java)``/../jre/lib/logging.properties

  ############################################################
  #   Default Logging Configuration File
  #
  # You can use a different file by specifying a filename
  # with the java.util.logging.config.file system property.
  # For example java -Djava.util.logging.config.file=myfile
  ############################################################
  
  ############################################################
  #   Global properties
  ############################################################
  
  # "handlers" specifies a comma separated list of log Handler
  # classes.  These handlers will be installed during VM startup.
  # Note that these classes must be on the system classpath.
  # By default we only configure a ConsoleHandler, which will only
  # show messages at the INFO and above levels.
  handlers= java.util.logging.ConsoleHandler
  
  # To also add the FileHandler, use the following line instead.
  #handlers= java.util.logging.FileHandler, java.util.logging.ConsoleHandler
  
  # Default global logging level.
  # This specifies which kinds of events are logged across
  # all loggers.  For any given facility this global level
  # can be overriden by a facility specific level
  # Note that the ConsoleHandler also has a separate level
  # setting to limit messages printed to the console.
  .level= INFO
  
  ############################################################
  # Handler specific properties.
  # Describes specific configuration info for Handlers.
  ############################################################
  
  # default file output is in user's home directory.
  java.util.logging.FileHandler.pattern = %h/java%u.log
  java.util.logging.FileHandler.limit = 50000
  java.util.logging.FileHandler.count = 1
  java.util.logging.FileHandler.formatter = java.util.logging.XMLFormatter
  
  # Limit the message that are printed on the console to INFO and above.
  java.util.logging.ConsoleHandler.level = INFO
  java.util.logging.ConsoleHandler.formatter = java.util.logging.SimpleFormatter
  
  # Example to customize the SimpleFormatter output format
  # to print one-line log message like this:
  #     <level>: <log message> [<date/time>]
  #
  # java.util.logging.SimpleFormatter.format=%4$s: %5$s [%1$tc]%n
  
  ############################################################
  # Facility specific properties.
  # Provides extra control for each logger.
  ############################################################
  com.xyz.foo.level = SEVERE
  

• 使用 #

Reference #

• https://bilibili.com/video/BV13A41137Tc?p=6&vd_source=550a4dc4b2a914c0681a14307bbe8cbe
• https://note.youdao.com/s/7retQ6yb