java - 如何使用 XML 风格的 MyBatis-SpringBoot-MySQL 执行正确的 SQL INSERT？

Question

我很难在 SQL 数据库中插入新数据。有人可以检查我的mapper.xml和mapper.java吗？

Actor.java POJO

@Component
public class Actor {

    private static final long serialVersionUID = 1L;

    private Integer actor_id;
    private String first_name;
    private String last_name;
    private String last_update;
    //Getters and Setters
}

ActorMapper.xml

 <insert id="insertNewActor" parameterClass="com.helios.mybatissakila.model.Actor" 
         useGeneratedKeys="true" keyColumn="actor_id" keyProperty="actor_id">
     insert into actor (first_name,last_name,last_update) 
     values (#{first_name},#{last_name},#{last_update})
 </insert>

Mapper.java方法

List <Actor> insertNewActor(Map<String, Object> actor);

RESTController 方法

@PostMapping(value="/actors", consumes = "application/json", produces = "application/json")
    public List<Actor> insertNewActor(@RequestBody Map<String, Object> actor) {
        return actorMapper.insertNewActor(actor);
    }

数据库表结构:

另外，请注意我是否应该在mapper.xml中使用parameterClass或parameterType？

Answer 1

首先删除不需要的@Component Actor。然后改变mapper.java，像这样

int insertNewActor(Actor actor);

如果失败，显示错误