mysql - 获取 : java. sql.SQLException:未知系统变量 'language' spring boot

Question

我从 spring data jpa 开始，我已经配置了所有 spring 应用程序。其中我的 Bootstrap 类是

@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);
}

我的 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);
}

服务和存储库

 @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>{}

在 pom.xml 中我添加了

   <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <scope>runtime</scope>
    </dependency>

它使用 mysql-connector-java-5.1.46.jar:5.1.46 并成功映射 req 但在运行应用程序时出现类似

的错误

  java.sql.SQLException: Unknown system variable 'language' 

并将模式导出到数据库

Answer 1

更新您的 mysql-connector 版本。它将解决您的问题。

<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.35</version>

属性:

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