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javaspring-bootvalidation

javax entity validation is not working for @Min and @Max having same value(like moblieNo should be of exact 10 digits)

    @NotNull(message = "Mobile number cannot be null.")
@Max(value = 10, message ="Mobile number length should be 10 characters." )
@Min(value = 10, message ="Mobile number length should be 10 characters." )
@Column(name = "mob_no")
private Long mobNo;

it should not give the message "Mobile number length should be 10 characters." in case giving 10 Digits value

Solution

  • According to your description, you need a String instead a Long for mobNo. Imagine you have a phone number like this: 0005550001, as a Long the value is 550001. The validation for a String should be something like:

    @Size(min = 10, max = 10, message = "Mobile number length should be 10 characters.")
private String mobNo;

    Edit: A good and more comprehensive alternative is to validate against a regular expression matching 10 digits:

    @Pattern(regexp = "^\d{10}$", message = "Mobile number length should be 10 characters.")
private String mobNo;

    Edit: Adding comment to the answer

    If mobNo is a Long and you can't change it to String, validate it with:

    @Min(1_000_000_000L)
@Max(9_999_999_999L)
Long mobNo

    This is the value range where a Long has 10 digits.

    However, consider the example above before choosing Long or a phone number field:

    Ex:0_005_550_001,

    this is a valid phone number, but as a Long its represented like 550001.