Validate that string is string and number is number

Question

I want to validate string and number. If I expect to receive an only string from JSON and receive a number I will return a message with an error. With number the same. Can I find annotation for this? Example @String - if I send a request from the postman without "example" and only 1 (only number)

public class User {

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

    //Example @String
    @Column(name = "password")
    private String password;

    @Column(name = "role")
    private String name;

}

I create a field String in an entity. If I send from Postman 1 without "" - it isn`t correct. But if I send "1" - it correct. How it validate? Vice versa with numbers...

I use string field, but if I send without "" - it also correct. It should be correct only with "". How can I fix it? From postman:

do understand that "12345" is in fact a valid String. You can create an annotation that checks that. — Stultuske, Jan 14 '19 at 12:08
Possible duplicate of [How to validate number string as digit with hibernate?](https://stackoverflow.com/questions/19537664/how-to-validate-number-string-as-digit-with-hibernate) — David Lavender, Jan 14 '19 at 14:03

score 0 · Answer 1 · answered Jan 14 '19 at 12:13

0

use @NotBlank from javax.validation.constraints.NotBlank for strings and @Digits for numbers

answered Jan 14 '19 at 12:13

dubem uzuegbu

141
4

@NotBlank doesn't check it. I sent a number and it was saved correctly. – lor lor Jan 14 '19 at 12:24
then use @Pattern to check using regex – dubem uzuegbu Jan 15 '19 at 09:18
Added an example with postman – lor lor Jan 16 '19 at 14:45

Validate that string is string and number is number

1 Answers1