【springboot+jpa的小demo访问不了 _spring 】

springboot+jpa的小demo访问不了

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spring

详细描述

截图

代码

@Controller
public class HelloBootController {

    @Autowired
    UserRepository userRepository;

    @Autowired
    User user;

    @RequestMapping("/toHello")
    public String toHello(ModelMap modelMap){
        userRepository.save(new User("Mshu","123456","zhuiqiu95@foxmail.com"));
        List<User> users = userRepository.findAll();
        modelMap.put("users",users);
        return "helloBoot";
    }
__________________________________________________________________________________________________

/**
 * 创建Dao接口, springboot 将接口类会自动注解到spring容器中，
 *  不需要我们做任何配置，只需要继承JpaRepository 即可
 */

public interface UserRepository extends JpaRepository<User,Long> {
}

____________________________________________________________________________________________________
spring.datasource.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.jpa.properties.hibernate.hbm2ddl.auto=update

编辑于2024-11-11