1、创建接口
BookDao.java
package top.woilanlan.jpa.dao;
public interface BookDao extends JpaRepository<Book, Integer> {
Book findBookById(Integer id);
List<Book> findBookByIdGreaterThan(Integer id);
List<Book> findBookByIdLessThanOrNameContaining(Integer id, String name);
}
2、测试
@RunWith(SpringRunner.class)
@SpringBootTest
public class JpaApplicationTests {
@Autowired
BookDao bookDao;
@Test
public void find4() {
Book book = bookDao.findBookById(3);
System.out.println(book);
}
@Test
public void find5() {
List<Book> list = bookDao.findBookByIdGreaterThan(3);
System.out.println(list);
List<Book> list1 = bookDao.findBookByIdLessThanOrNameContaining(3, "故事");
System.out.println(list1);
}
}
3、查询关键字
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