属性文件中忽略Java日志记录级别

Question

I have the following logging.properties file for java logging, which is a slightly modified version of the default logging.properties file that comes with the JDK:

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

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.level=FINEST
java.util.logging.FileHandler.formatter=java.util.logging.SimpleFormatter
java.util.logging.ConsoleHandler.level = CONFIG
java.util.logging.ConsoleHandler.formatter = java.util.logging.SimpleFormatter

The level settings for FileHandler and ConsoleHandler are ignored. They only work if I set global .level = FINEST . It seems, that .level acts as global limit to what can be logged. From the description, however, I would have expected that the settings in FileHandler and ConsoleHandler override the global setting.

Do I need additional settings to configure?

PS: Java version is 1.8.

Answer 1

The Java Logging Overview will give you a breakdown of how the logging framework is setup.

The line .level = FINEST determines the level of the root logger. Meaning that if you have log calls in your code they will generate log records which will be published to the attached handers and possibly to parent handlers.

The java.util.logging.FileHandler.level=FINEST line determines the lowest level that will be published to the output file. For instance, java.util.logging.ConsoleHandler.level = CONFIG will only publish records CONFIG and higher to the console.