[英]Spring Boot @ManyToMany not showing in JSON
我正在尝试从User
实体获取所有信息,包括用户从Shoes
实体获得的Shoes
。 当我尝试调用findAll()
,它仅从一个表中获取信息,但忽略联接的表。 请告诉我我在做什么错。
//Shoes
@Entity
public class Shoes implements Serializable {
private Integer shoesId;
private Integer shoesCode;
private String shoesColor;
private String shoesSeason;
private String shoesType;
private String shoesPicture;
private String shoesShortDescription;
private String shoesFullDescription;
private String shoesPrice;
@ManyToMany(fetch = FetchType.EAGER, mappedBy = "userShoes")
private Set<User> userSet;
//getters and setters
//User
@Entity
public class User implements Serializable {
private Integer userId;
private String userLogin;
private String userPassword;
private String userFirstName;
private String userLastName;
private String userEmail;
private String userBirthDay;
private String userFacebookId;
private String userGoogleId;
private String userAvatar;
@ManyToMany(targetEntity = Shoes.class, cascade = CascadeType.ALL, fetch = FetchType.EAGER)
@JoinTable(name = "user_shoes",
joinColumns = {@JoinColumn(name = "user_id")},
inverseJoinColumns = {@JoinColumn(name = "shoes_id")})
private Set<Shoes> userShoes;
//getters and setters
我正在使用JpaRepository:
@Repository
@Transactional
public interface ShoesRepository extends JpaRepository<Shoes, Serializable> {
List<Shoes> findShoesByShoesColorAndShoesSeason(String shoesColor, String shoesSeason);
}
@Repository
@Transactional
public interface UserRepository extends JpaRepository<User, Serializable> {
}
控制器:
@RestController
@RequestMapping("/v1/items")
public class ShoesController {
private ShoesService shoesService;
@Autowired
public ShoesController(ShoesService shoesService) {
this.shoesService = shoesService;
}
@GetMapping("/shoes/test")
public String hello(){
return "HelloWorld";
}
@GetMapping(path = "shoes")
public ResponseEntity<Iterable<Shoes>> getAll(){
List<Shoes> allshoes = new ArrayList<>();
shoesService.findAll().iterator().forEachRemaining(allshoes::add);
if (allshoes.isEmpty()){
return new ResponseEntity<>(HttpStatus.NO_CONTENT);
}
return new ResponseEntity<>(allshoes, HttpStatus.OK);
} }
@RestController
@RequestMapping("v1/users")
public class UserController {
private UserService userService;
@Autowired
public UserController(UserService userService) {
this.userService = userService;
}
@GetMapping(path = "user")
public ResponseEntity<List<User>> getAll(){
List<User> allUsers = new ArrayList<>();
userService.findAll().iterator().forEachRemaining(allUsers::add);
if (allUsers.isEmpty()){
return new ResponseEntity<>(HttpStatus.NO_CONTENT);
}
return new ResponseEntity<>(allUsers, HttpStatus.OK);
} }
我正在使用Postman进行测试: http:// localhost:8080 / v1 / users / user获得JSON:
[
{
"userId": 1,
"userLogin": "fsdfsdf",
"userPassword": "sdfsdfsdf",
"userFirstName": "fsdfds",
"userLastName": "fsdfsd",
"userEmail": "dfsf",
"userBirthDay": "sdfsdfs",
"userFacebookId": "sdfdsfsd",
"userGoogleId": "fsdfsd",
"userAvatar": "sdsdf"
}
]
但是没有鞋子的属性。
http:// localhost:8080 / v1 / items / shoes
[
{
"shoesId": 1,
"shoesCode": 23432234,
"shoesColor": "dsfsdf",
"shoesSeason": "fsdfs",
"shoesType": "fsdsdf",
"shoesPicture": "sdfsdf",
"shoesShortDescription": "dfsdfsd",
"shoesFullDescription": "sdfsdf",
"shoesPrice": "sdfsd"
}
]
但是没有用户属性。
在主要班级找到了决心。 我真的不知道为什么有人添加注释:
@Import(RepositoryRestMvcConfiguration.class)
@ComponentScan({"com.ua.demoClothes"})
@EntityScan("com.ua.demoClothes.entity")
@JsonAutoDetect
但是将其删除后,它便开始正常工作了。 只是与
@SpringBootApplication
在主要班级
和
@JsonBackReference
@JsonManagedReference
在实体类中
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