Spring 开机 Mysql 数据未保存

Question

我正在尝试使用 spring boot + mysql 保存数据。尽管 GET 响应中没有数据，但每次调用都会给出 200。

应用程序.properties

    spring.datasource.driverClassName=com.mysql.cj.jdbc.Driver
    spring.jpa.hibernate.ddl-auto=update
    spring.datasource.url=jdbc:mysql://localhost:3306/smyc
    spring.datasource.username=root
    spring.datasource.password=root
    spring.sql.init.schema-locations=classpath:sql/schema.sql
    spring.sql.init.mode=always

用户控制器.kt

    @RestController
    @RequestMapping("/users")
    class UserController(val service: UserService) {
        @GetMapping
        fun getAllUsers(): List<User> = service.getAllUsers()
    
        @PostMapping(
            "/add",
            consumes = [MediaType.APPLICATION_JSON_VALUE]
        )
        fun addUser(@RequestBody user: User) {
            service.addUser(user)
        }
    }

用户库.kt

interface UserRepository : CrudRepository<User, String> {

    @Query("SELECT * FROM users")
    fun getAllUsers(): List<User>
}

用户.kt

@Table("users")
data class User(
    val id: String,
    val firstName: String,
    val lastName: String,
    val email: String,
    val password: String,
    val phone: String,
)

Answer 1

更新 User.kt，使其包含@Entity （在 class 级别）和@Id （在 id 级别）

@Table("users")
@Entity
data class User(
    @Id
    val id: String,
    val firstName: String,
    val lastName: String,
    val email: String,
    val password: String,
    val phone: String,
)

Answer 2

您可以使用保存方法：

MerchandiseEntity pants = new MerchandiseEntity("Pair of Pants", 34.99);
pants = repo.save(pants);