spring data jpa utf-8 encoding not working

Question

I use spring-data-jpa and mysql database. My tables character set is utf-8. Also I added ?useUnicode=yes&characterEncoding=utf8

Answer 1

For anyone using the HikariCP connection pool who prefers not to append the parameters directly to the JDBC URL:

The spring.datasource.connectionProperties property was removed some time ago. Since then, you need to use connection pool specific properties as shown in @SebTheGreat's answer: spring.datasource.tomcat.connection-properties=useUnicode=true;characterEncoding=utf-8;

Hikari doesn't have a connection-properties property, but this works:

spring.datasource.hikari.data-source-properties.useUnicode=true
spring.datasource.hikari.data-source-properties.characterEncoding=UTF-8

Answer 2

Try

spring.datasource.url = jdbc:mysql://localhost:3306/gehive?useUnicode=yes&characterEncoding=UTF-8

It seems issue is due to missing "-".

Reference:- https://forum.hibernate.org/viewtopic.php?f=1&t=1037497&view=next

Answer 3

I had the same issues, and I solved it by adding this line to my application.properties file:

spring.datasource.tomcat.connection-properties=useUnicode=true;characterEncoding=utf-8;

Note: The following didn't work:

spring.datasource.connectionProperties=useUnicode=true;characterEncoding=utf-8;

Answer 4

It works for me if using mysql java connector version 5.1.44 (before I used connector 8.0.17 it doesn't work)

Answer 5

Remember to escape any special characters, as below: spring.datasource.url=jdbc\:mysql\://localhost\:3306/${SERVER_DB_NAME}\?useUnicode=true\&characterEncoding=utf\-8\&characterSetResults=utf\-8

Answer 6

In my case that's solve my issue https://mathiasbynens.be/notes/mysql-utf8mb4

[client]
default-character-set = utf8mb4

[mysql]
default-character-set = utf8mb4

[mysqld]
character-set-client-handshake = FALSE
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci