getting : java.sql.SQLException: Unknown system variable 'language' spring boot - mysql

Question

I am beginning with spring data jpa and i have configured all spring app. in which my bootstrap class is
#SpringBootApplication
#ComponentScan("com.ticket.booking")
#EnableJpaRepositories("com.ticket.booking.dao")
#EntityScan("com.ticket.booking.entity")
public class TicketBookingManagementApplication {
public static void main(String[] args) {
SpringApplication.run(TicketBookingManagementApplication.class, args);
}
}
my controller
#RestController
#RequestMapping(value="/api/ticket")
public class TicketController {
#Autowired
private TicketService ticketService;
#GetMapping(value="/")
public String welcome(){
return "Welcome to Ticket Booking Systems";
}
#PostMapping(value="/add")
public Ticket createTicket(#RequestBody Ticket ticket){
return ticketService.createNewTicket(ticket);
}
#GetMapping(value="/get/{ticketId}")
public Ticket getTicket(#PathVariable ("ticketId") Integer ticketId){
return ticketService.getTicketById(ticketId);
}
}
service and repository
#Service
public class TicketService {
#Autowired
private TicketDao ticketDao;
public Ticket createNewTicket(Ticket ticket) {
// TODO Auto-generated method stub
return ticketDao.save(ticket);
}
public Ticket getTicketById(Integer ticketId) {
// TODO Auto-generated method stub
return ticketDao.findOne(ticketId);
}
}
public interface TicketDao extends CrudRepository<Ticket, Integer>{}
in pom.xml i have added
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
It uses mysql-connector-java-5.1.46.jar:5.1.46 and it maps req successfully but while running app i am getting error like
java.sql.SQLException: Unknown system variable 'language'
and exporting schema to database

Answer 1

update your mysql-connector version. it will solve your problem.
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.35</version>
properties:
spring.datasource.url=jdbc:mysql://localhost/schema_name
spring.datasource.username=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.jpa.database-platform=org.hibernate.dialect.MySQL5InnoDBDialect

Answer 2

I am posting this answer because somebody might get benefited from this.
In my case, I was working with Spring-boot so the dependency in pom.xml was
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
So spring boot was taking some default dependency version from Spring boot parent which was different from my System installed mysql-server version 5.1.22 so that was the reason behind that error.
So to resolve this error I overridden the version by specifying manually like below.
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.22</version>
</dependency>
and it worked.