@Data
@Entity
@Table(name="weather_daily")
@DynamicInsert
@DynamicUpdate
@NoArgsConstructor
@AllArgsConstructor
public class Dataset_info {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name="daily_id",columnDefinition = "INT(11)")
    private int Daily_id;
    private BigDecimal w_avg_ta;

}

这是我的Dataset_info代码

public interface DatasetRepository extends JpaRepository<Dataset_info,Integer> {

@Query(value = "select w_avg_ta from weather_daily where w_date like concat('%',:query,'%')",nativeQuery = true)
public List<weather_avg> findByDataset(@Param("query") String query);
}

这是我的DatasetRepository代码

package kr.co.ds.datastation.dsapi.repository;

public interface weather_avg {
    public String w_avg_ta();
}

这是我的weather_avg代码

@RestController
@RequestMapping(value = "/dataset")
@Slf4j
public class DatasetController {
    @Autowired DatasetRepository datasetRepository;

    @RequestMapping(value = "/list",method = RequestMethod.GET)
    @ResponseBody
    public String getDomainList(@RequestParam("query")String query) {
        List<String> sj = new ArrayList<String>();
        List<weather_avg> list= this.datasetRepository.findByDataset(query);
        for (int i = 0; i < list.size(); i++) {
             sj.add(list.get(i).w_avg_ta());
        }
        String all = sj.stream().collect(Collectors.joining("<br>"));
        return all;
        //log.info(query);
        //return "Test";
    }
}

这是我的DatasetController代码

List<weather_avg> dataset_infoList = this.datasetRepository.findByDataset(".go.");

这是我的应用程序代码

因此此代码正在运行，但是当我使用此代码进行调试时得到了结果 这是例子

http://localhost:8080/dataset/list?query=2019-09-29

我在互联网上打字 通常会显示查询结果

23.8(type is decimal(6,1))

但不是

Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception 
[Request processing failed; nested exception is java.lang.IllegalArgumentException: Invoked 
method public abstract java.lang.String 
kr.co.ds.datastation.dsapi.repository.weather_avg.w_avg_ta() is no accessor method!] with root 
cause

这是我的错误消息..实际上我不明白为什么它不起作用，所以如果有人知道如果您也没有提醒我包含的解决方案，请plz教我