MapperRegistry 不知道映射器文件

Question

我试图在 Spring Boot 上使用 mybatis 显示 mysql 数据库中的所有数据。但是，MapperRegistry 不知道 mapper.xml 文件。我试过更改 application.yaml 的类路径。应用程序.yamlmybatis:  mapper-locations: classpath:com/example/demo/repository/mybatis/*.xml店铺类public class Shop {    private String shopId;    private String shopName;    public Shop() {        }    public Shop(String shopId, String shopName) {        this.shopId = shopId;        this.shopName = shopName;    }}ShopMapper.xml    <!-- Mapping Shop Class to Shop tables -->    <resultMap id="Shop"               type="com.example.demo.domain.Shop">        <id property="shopId" column="SHOP_ID"/>        <result property="shopName" column="SHOP_NAME"/>    </resultMap>    <!-- Show all shops with the designated shopid -->    <select id="get" resultMap="Shop">        SELECT SHOP_ID, SHOP_NAME FROM SHOP        WHERE SHOP_ID = #{shopId}    </select></mapper>商店资料库public Shop findOne(String shopId) {    Shop shop = this.sqlSessionTemplate.getMapper(ShopMapper.class).get(shopId);   return shop;}控制器@RestController    public class PageController {    @GetMapping(path = "/{shopId}", produces = "application/json")    public Shop get(@PathVariable String shopId) {        return this.service.get(shopId);    }}错误：org.apache.ibatis.binding.BindingException：MapperRegistry 不知道类型接口 com.example.demo.repository.mybatis.ShopMapper

Answer 1

你需要添加一个接口来匹配 ShopMapper.xml

@Mapper

public interface ShopMapper {

    Shop get(Long shopId);

}