Question

我有两个实体的DTO。如何验证这些实体？我应该使用什么注释？我使用rest api，JSON，spring boot。我知道如何验证一个实体。但是我不知道如何处理DTO。

@PostMapping
public ResponseEntity<?> create(@Valid @RequestBody DTOClient client) {
       ....

        return responseEntity;
    }

public class DTOClient{

//What I should use here to validate these entities?
    private Client client;
    private Skill skill;

}

@Entity
public class Client{

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer id;

    private String first_name;

    private String last_name;
}

@Entity
public class Skill{

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer id;

    private String name;

    private int year;
}

Answer 1

对要验证的字段使用javax.validation。下面的代码是一个示例，用于验证first_name对象中的client不应为null或为空白。

@PostMapping
public ResponseEntity<?> create(@Valid @RequestBody DTOClient client) {
       ....

        return responseEntity;
    }

public class DTOClient{

//What I should use here to validate these entities?
    @Valid
    @NotNull(message="client should not null")
    private Client client;
    private Skill skill;

}

@Entity
public class Client{

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer id;

    @NotBlank(message="first name of client should not be null or blank")
    private String first_name;

    private String last_name;
}

@Entity
public class Skill{

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer id;

    private String name;

    private int year;
}

简而言之，您需要对Bean使用@Valid，例如控制器方法的参数和非主要字段。并为需要验证的字段添加约束注释。

验证具有两个实体的DTO

1 个答案: