java 如何配置 jdk14 日志记录的模式
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/5416769/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to configure the jdk14 logging's pattern
提问by user496949
I guess I can chnage pattern by adding the line java.util.logging.ConsoleHandler.pattern, however where to check the pattern information like %u %h etc?
我想我可以通过添加行 java.util.logging.ConsoleHandler.pattern 来更改模式，但是在哪里检查 %u %h 等模式信息？
采纳答案by wds
Edit: The below was written at the time for Java 6. For 7 and later, refer to David's answer below.
编辑：以下内容是当时为 Java 6 编写的。对于 7 及更高版本，请参阅以下 David 的回答。
AFAIK there is no such property. There is a java.util.logging.FileHandler.patternbut this is to set the pattern of the output filename, not of the logging format.
AFAIK 没有这样的财产。有一个，java.util.logging.FileHandler.pattern但这是设置输出文件名的模式，而不是日志格式。
The way you configure the output format in the util logging API is by setting the Formatter. By default, a SimpleFormatteris attached to your ConsoleHandler. This formatter simply hardcodes the pattern and doesn't allow you to set it.
在 util 日志记录 API 中配置输出格式的方式是通过设置Formatter. 默认情况下， aSimpleFormatter附加到您的ConsoleHandler. 这个格式化程序只是对模式进行硬编码，不允许您设置它。
If you need a different output format, you'll have to either implement your own Formatter, or use a different logging framework, such as logback.
如果您需要不同的输出格式，则必须实现自己的Formatter，或者使用不同的日志记录框架，例如logback。
回答by David
This question has already been answered by somebody, but i want to provide some new information:
这个问题已经有人回答了，但我想提供一些新信息：
Since Java 7 it is possible to configure the output pattern for log messages with the SimpleFormatter.
从 Java 7 开始，可以使用SimpleFormatter.
You can use this property in your logging properties file:
您可以在日志记录属性文件中使用此属性：
java.util.logging.SimpleFormatter.format = [%1$tc] %4$s: %2$s - %5$s %6$s%n
If you need more information on the pattern syntax have a look here: http://docs.oracle.com/javase/7/docs/api/java/util/Formatter.html
如果您需要有关模式语法的更多信息，请查看此处：http: //docs.oracle.com/javase/7/docs/api/java/util/Formatter.html
The digits in the property value above refer to parameters provided to the formatter. Please refer to the official Java docs for more information: http://docs.oracle.com/javase/7/docs/api/java/util/logging/SimpleFormatter.html
上面属性值中的数字是指提供给格式化程序的参数。更多信息请参考官方Java文档：http: //docs.oracle.com/javase/7/docs/api/java/util/logging/SimpleFormatter.html
Example configuration file logging.properties:
示例配置文件logging.properties：
handlers = java.util.logging.ConsoleHandler
java.util.logging.ConsoleHandler.level = ALL
java.util.logging.ConsoleHandler.formatter = java.util.logging.SimpleFormatter
# Pattern works since Java 7
java.util.logging.SimpleFormatter.format = [%1$tc] %4$s: %2$s - %5$s %6$s%n
When you call your java program you can specify your configuration file as parameter:
当您调用 java 程序时，您可以将配置文件指定为参数：
java -Djava.util.logging.config.file=logging.properties -jar myProgram.jar
