如何在通过 POST 提交数据时应用 Hibernate 验证器并在 PUT 时省略？

Question

POST 和 PUT 方法具有相同的 DTO 对象：

class AcmeRequest {
    private String id;
    @NotEmpty
    private String productCode;
    private String description;
}

对于 POST 请求我总是希望看到 productCode 字段，这就是为什么我指定 @NotEmpty 注释但是当 PUT 收到请求时 productCode 应该是可选。

当请求为 PUT 时，是否可以跳过 @NotEmpty？

Answer 1

每个 Hibernate Validator 注释都有一个 groups 参数。通过界面，您可以控制激活哪些验证。在 docs.

查看更多信息

在控制器级别，指定必须使用 @Validated 注释激活哪个 groups。

下面是我的一个演示项目中的一个小示例。我曾经和你有过同样的疑问

实体：

@Entity
@Table(name = "tasks")
@Getter @Setter
public class Task
{
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Null(message = "You can't provide a task ID manually. ID's are automatically assigned by our internal systems.", groups = {TaskInsertValidatorGroup.class})
    @NotNull(message = "You must provide an id" , groups = TaskUpdateValidatorGroup.class)
    private Integer id;

    @NotBlank(message = "Task description cannot be empty")
    @Length(max = 255 , message = "Task description length must not exceed 255 characters")
    private String description;

    @JsonProperty("is_completed")
    @Column(name = "is_completed")
    private Boolean isCompleted = false;

    @CreationTimestamp
    @JsonProperty("created_on")
    @JsonFormat(pattern="dd-MM-yyyy HH:mm:ss")
    @Column(name = "created_on", updatable = false)
    private Timestamp creationDate;

    @UpdateTimestamp
    @JsonProperty("last_modified")
    @JsonFormat(pattern="dd-MM-yyyy HH:mm:ss")
    @Column(name = "last_modidied")
    private Timestamp lastModificationDate;

    @Override
    public boolean equals(Object o)
    {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        Task task = (Task) o;
        return id.equals(task.id);
    }

    @Override
    public int hashCode()
    {
        return Objects.hash(id);
    }
}

接口：

public interface TaskInsertValidatorGroup {}

public interface TaskUpdateValidatorGroup{}

控制器：

RestController
@RequestMapping("/api")
public class TaskRestController
{

    @Autowired
    private TaskService taskService;

    @GetMapping("/tasks/{id}")
    public ResponseEntity<?> getTask(@PathVariable Integer id)
    {
        return new ResponseEntity<>(taskService.findTask(id),HttpStatus.OK);
    }

    @GetMapping("/tasks")
    public ResponseEntity<?> getTasks()
    {
        return new ResponseEntity<>(taskService.findAllTasks(),HttpStatus.OK);
    }

    @PostMapping("/tasks")
    public ResponseEntity<?> addTask(@Validated(TaskInsertValidatorGroup.class) @RequestBody Task task)
    {
        taskService.saveTask(task);
        APISuccessResponse response = APISuccessResponse.builder()
                .info("Task added")
                .build();

        return new ResponseEntity<>(response,HttpStatus.OK);
    }

    @RequestMapping(value = "/tasks" , method = RequestMethod.PATCH)
    public ResponseEntity<?> updateTask(@Validated(TaskUpdateValidatorGroup.class) @RequestBody Task task)
    {
        taskService.updateTask(task);
        APISuccessResponse response = APISuccessResponse.builder()
                .info("Task Updated")
                .build();

        return new ResponseEntity<>(response,HttpStatus.OK);
    }

    @RequestMapping(value = "/tasks/{id}", method = RequestMethod.DELETE)
    public ResponseEntity<?> removeTask(@PathVariable Integer id)
    {
        taskService.removeTask(id);
        APISuccessResponse response = APISuccessResponse.builder()
                .info("Task Deleted")
                .build();

        return new ResponseEntity<>(response,HttpStatus.OK);
    }

}

如何在通过 POST 提交数据时应用 Hibernate 验证器并在 PUT 时省略？

How to apply Hibernate validator when data submitted via POST and omit when PUT?

java

validation

spring

hibernate-validator

spring-boot