[JAVA] Japanese characters described in MessageResources.properties are garbled

Premise

Spring Validation message is garbled.

• Production environment, etc.
• When executed in Eclipse, it is displayed normally.

problem

This page deals with the case of violating "the properties file must be unicode (ISO-8859-1 in Eclipse) encoded."

In Spring, the properties file read through the Spring api is not created with the assumption that it will read multi-byte characters, so it must be in the above encoding method.

solution

1. Change the encoding method of the Eclipse editor

*** (Caution) Back up the contents of MessageResources.properties before making changes ***

1. From Eclipse's Package Explorer, right-click MessageResources.properties
2. Click Properties
3. Resources → Text File Encoding → Other: Select ISO-8859-1
4. Apply and close, click

2. Rewrite the file

1. From Eclipse's Package Explorer, right-click MessageResources.properties
2. Next → Click Limy Property Editor
3. If the characters are garbled, rewrite them (from backup to copy, etc.).
4. Save

3. The error display becomes Japanese

--By the above, the file is displayed in Japanese on Eclipse and the character encoding method is ISO-8859-1.