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https://issues.apache.org/jira/browse/LOG4J2-255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13659259#comment-13659259
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Ralph Goers commented on LOG4J2-255:
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Nick, while UTF-8 is capable of representing characters in many languages most
computers don't display characters on the screen in Unicode. They use what IBM
calls code pages. For example, Gary mentioned cp 1252 - cp stands for code
page. http://en.wikipedia.org/wiki/Code_page gives a simple explanation of what
they are. So the problem is that although you may have data in Unicode, to
display it on the screen so that it is viewable it must be converted to the
proper code page. Since Strings in Java are always UTF-8, when you call
getBytes() on the string passing in a charset allows Java to convert the UTF-8
into the target code page, provided that the OS has the definition for the code
page installed. This is why Layouts accept a charset parameter. The charset
Java's name for a code page.
What I don't understand here is that if Remko is generating logs in UTF-8 that
contain Japanese characters and is specifying the proper Japanese code page for
the host computer why it is generating unreadable stuff. If no charset is
specified then it is perfectly understandable why this would be happening.
Note that this is actually the proper way to performa
internationalization/localization - the Strings should be manipulated in UTF-8
and passed from client to server that way and only converted to the target code
page when they are actually displayed.
> Multi-byte character strings are scrambled in log output
> --------------------------------------------------------
>
> Key: LOG4J2-255
> URL: https://issues.apache.org/jira/browse/LOG4J2-255
> Project: Log4j 2
> Issue Type: Bug
> Components: Appenders, Core
> Affects Versions: 2.0-beta6
> Reporter: Remko Popma
> Assignee: Remko Popma
> Priority: Blocker
> Fix For: 2.0-beta7
>
>
> When I tried to log a Japanese string the output was scrambled in both the
> Console and a log file.
> For example,
> logger.warn("日本語テスト"); // (Japanese test)
> came out as
> 15:07:00.184 [main] WARN test.JapaneseTest - 譌･譛ｬ隱槭ユ繧ｹ繝?
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