springboot~jpa個性化數據操做接口

時間 2019-11-05

原文原文鏈接

jap是個全能倉儲

jap把不少數據庫訪問都封裝了，而且提交了默認的一切數據方法簽名的約定，你們按着約定走，能夠不寫SQL語句，而若是比較複雜的狀況，也須要寫SQL，這裏咱們介紹一下查詢和修改的實例方法，有一點要注意，==倉儲的寫操做是沒有返回值==的。java

商品倉儲個性接口

/**
 * 產品個性化接口.
 */
@Repository
public interface ProductDetailRepository extends
    CrudRepository<ProductDetail, Integer>,
    PagingAndSortingRepository<ProductDetail, Integer> {
  @Query("select p from ProductDetail p where UPPER(p.productName) like UPPER(?1)")
  List search(String term);

  @Transactional
  @Modifying
  @Query("UPDATE ProductDetail p SET p.shortDescription = ?2 WHERE p.productId = ?1")
  void updateDescrption(int id, String description);
}

controller中能夠直接調用它，當前IOC這塊於spring框架爲咱們實現了，直接使用註解便可

@RestController
@RequestMapping("/products")
public class ProductDetailController {
  private final ProductDetailRepository repository;
  private final ObjectMapper objectMapper;

  @Autowired
  public ProductDetailController(ProductDetailRepository repository, ObjectMapper objectMapper) {
    this.repository = repository;
    this.objectMapper = objectMapper;
  }
 @PutMapping("{id}")
  public HttpEntity search(@PathVariable int id, @RequestParam("q") String des) {
    repository.updateDescrption(id, des);
    return new ResponseEntity<>(HttpStatus.ACCEPTED);

  }
}