Spring-Boot, Can't save unicode string in MySql using spring-data JPA

Question

I have my application.properties set up like this :

spring.datasource.username = root
spring.datasource.password = root
spring.datasource.url =         


        

Answer 1

Non of the answer worked for me … except the url encoding part.

The solution in my case is twofold:

1- Add encoding in the URL of Database config bean:

<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/customersdb?useSSL=false&amp;useUnicode=yes&amp;characterEncoding=UTF-8&amp;characterSetResults=UTF-8" />

2- Add this configuration to your dispatcher config file:

<filter>
    <filter-name>encoding-filter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
        <param-name>encoding</param-name>
        <param-value>UTF-8</param-value>
    </init-param>
    <init-param>
        <param-name>forceEncoding</param-name>
        <param-value>true</param-value>
    </init-param>
</filter>

<filter-mapping>
    <filter-name>encoding-filter</filter-name>
    <url-pattern>/*</url-pattern>
    <dispatcher>REQUEST</dispatcher>
    <dispatcher>FORWARD</dispatcher>
</filter-mapping>

Otherwise, other configurations don't take effect.

Answer 2

See "question marks" in http://stackoverflow.com/questions/38363566/trouble-with-utf8-characters-what-i-see-is-not-what-i-stored .

Also,

⚈  spring.jpa.properties.hibernate.connection.characterEncoding=utf-8 
⚈  spring.jpa.properties.hibernate.connection.CharSet=utf-8 
⚈  spring.jpa.properties.hibernate.connection.useUnicode=true 

Answer 3

Keep your hibernate configuration Like this

jdbc:mysql://localhost:3306/dbname?useUnicode=yes&characterEncoding=UTF-8

And Change your DB Collation Like this

ALTER TABLE tablename CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

More information : Link

Answer 4

In your /etc/mysql/my.cnf file change the following.

[mysql]
default-character-set=utf8
[mysqld]
character-set-server=utf8

Answer 5

if you want save non-ascii character correctly, you should make sure:

• Created MySQL table with charset=encoding is UTF-8
• Connect MySQL table with charset=encoding is UTF-8

following is how to achieve it:

Create mysql table with utf-8 charset

method 1 (I use this method): config in Spring Boot JPA

after refer another Chinese post, my final working configuration:

• file: src/main/java/com/crifan/smartelectricserver/MySQL55DialectUtf8mb4.java
• code:

package com.crifan.smartelectricserver;

import org.hibernate.dialect.MySQL55Dialect;;
// import org.hibernate.dialect.MySQL5InnoDBDialect; // Deprecated

// public class MySQL5InnoDBDialectUtf8mb4 extends MySQL5InnoDBDialect {
public class MySQL55DialectUtf8mb4 extends MySQL55Dialect {
  @Override
  public String getTableTypeString() {
    return "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE utf8mb4_unicode_ci";
  }
}

which set table charset to utf8mb4 and collation to utf8mb4_unicode_ci

and

• file: src/main/resources/application.properties
• config:

spring.jpa.database-platform=com.crifan.smartelectricserver.MySQL55DialectUtf8mb4

in which:

• com.crifan.smartelectricserver.MySQL55DialectUtf8mb4: corresponding above file com/crifan/smartelectricserver/MySQL55DialectUtf8mb4.java

method 2: set utf-8 in MySQL config file my.cnf

find your my.cnf in your machine, edit to:

[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 
init_connect='SET NAMES utf8mb4'

Connect MySQL with UTF-8

• file: src/main/resources/application.properties
• config:

spring.datasource.url=jdbc:mysql://${MYSQL_HOST:localhost}:3306/smart_electric?useUnicode=yes&characterEncoding=UTF-8

in which:

• useUnicode=yes&characterEncoding=UTF-8: means connect MySQL with charset utf-8

Answer 6

Solved it by applying to the column definition as shown below:

public class Goal{

@Column(name = "SOURCE_OF_FUNDS", length = 6000, columnDefinition = "VARCHAR(6000) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL")
private String sourceOfFunds;

}