RequestAndResponseLoggingFilter

Forked "Spring Web filter for logging request and response".

original gist https://gist.github.com/int128/e47217bebdb4c402b2ffa7cc199307ba

probrem

The original had a problem with garbled characters in json. The reason is follows.

• RFC8259 requires UTF-8 encoding for JSON
• Accordingly, no character set is specified for Content-Type: application/json
• Spring Boot has also changed in that way since 2.2
• In the original "RequestAndResponseLoggingFilter.java", if the character set is not specified, it will be ISO-8859-1.

changes

Changed to consider ISO-8859-1(Latain-1) as UTF-8 when Content-Type: application/json.