JPA is just like a helper class for providing data for Controller, has method like ‘findOne‘, ‘findAll‘, ‘saveAndFlush‘, ‘delete‘.
in repository/ShipwreckRespository.java:
package hello.respository; import org.springframework.data.jpa.repository.JpaRepository; import hello.model.Shipwreck; public class ShipwreckRespository extends JpaRepository<Shipwreck, Long>{ }
in model/Shipwreck.java:
package hello.model; import javax.persistence.Entity; import javax.persistence.GenerationType; import javax.persistence.GeneratedValue; @Entity public class Shipwreck { @Id @GeneratedValue(strategy = GenerationType.AUTO) Long id; String name; String description; String condition; Integer depth; Double latitude; Double longitude; Integer yearDiscovered;
controller:
@RestController @RequestMapping("api/v1/") public class ShipController { @Autowired private ShipwreckRespository shipwreckRespository; @RequestMapping(value="shipwrecks", method= RequestMethod.GET) public List <Shipwreck>list() { return shipwreckRespository.findAll(); } @RequestMapping(value = "shipwrecks", method = RequestMethod.POST) public Shipwreck create(@RequestBody Shipwreck shipwreck) { return shipwreckRespository.saveAndFlush(shipwreck); } @RequestMapping(value="shipwrecks/{id}", method = RequestMethod.GET) public Shipwreck get(@PathVariable long id) { return shipwreckRespository.findOne(id); } @RequestMapping(value="shipwrecks/{id}", method = RequestMethod.PUT) public Shipwreck update(@PathVariable long id, @RequestBody Shipwreck shipwreck) { Shipwreck shipwreckExisting = shipwreckRespository.findOne(id); BeanUtil.copyProperties(shipwreck, shipwreckExisting); return shipwreckRespository.saveAndFlush(shipwreckExisting); } @RequestMapping(value="shipwrecks/{id}", method = RequestMethod.DELETE) public Shipwreck delete(@PathVariable long id) { Shipwreck shipwreckExisting = shipwreckRespository.findOne(id); shipwreckRespository.delete(shipwreckExisting); return shipwreckExisting; } }
原文地址:https://www.cnblogs.com/Answer1215/p/10279329.html
时间: 2024-10-11 16:52:55