Java Spring Boot@ManyToMany未在JSON中显示

我正在尝试从

用户

实体获取所有信息，其中包括用户从

鞋子

实体获得的鞋子。当我尝试调用

findAll（）

时，它只从一个表中获取信息，而忽略连接的表。请告诉我我做错了什么

但是没有鞋的财产

---

但没有用户属性。

在主类中找到解决方案。 我真的不知道为什么有人会添加注释：

@Import(RepositoryRestMvcConfiguration.class)
@ComponentScan({"com.ua.demoClothes"})
@EntityScan("com.ua.demoClothes.entity")
@JsonAutoDetect

但当它被移除时，它开始正常工作。刚刚

@springbootplication

主课

及

---

在entities类中，是否在userShoes上定义了公共getter？如果不是，您应该添加它或强制jackson使用字段（例如，通过

@JsonProperty

或通过

@jsonautodect

更改自动检测策略），并作为旁注：

userService.findAll（）.iterator（）.forEachRemaining（allUsers:：add）

不是很有效，因为它可能会强制

ArrayList

调整多个时间的大小，以及您不只是返回userService的原因。findAll（）？有问题：您的数据库中的节目和用户之间有关联吗？

@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> {

}

@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);
    } }

[
    {
        "userId": 1,
        "userLogin": "fsdfsdf",
        "userPassword": "sdfsdfsdf",
        "userFirstName": "fsdfds",
        "userLastName": "fsdfsd",
        "userEmail": "dfsf",
        "userBirthDay": "sdfsdfs",
        "userFacebookId": "sdfdsfsd",
        "userGoogleId": "fsdfsd",
        "userAvatar": "sdsdf"
    }
]

[
    {
        "shoesId": 1,
        "shoesCode": 23432234,
        "shoesColor": "dsfsdf",
        "shoesSeason": "fsdfs",
        "shoesType": "fsdsdf",
        "shoesPicture": "sdfsdf",
        "shoesShortDescription": "dfsdfsd",
        "shoesFullDescription": "sdfsdf",
        "shoesPrice": "sdfsd"
    }
]

@Import(RepositoryRestMvcConfiguration.class)
@ComponentScan({"com.ua.demoClothes"})
@EntityScan("com.ua.demoClothes.entity")
@JsonAutoDetect

@JsonBackReference
@JsonManagedReference