Hibernate validator for chars

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一生所求
一生所求 2021-01-18 23:52

Is it possible to validate that a Character is either M or F or do I need to use a string with a regex?

@Pattern(regexp = \"^[MF]{1}$\", message = \"custome         


        
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  •  醉梦人生
    2021-01-19 00:53

    Your should this regular expression for accepting only M or F.

    @Pattern(regexp = "^[M|F]{1}$", message ="Must be M or F")
    

    In your second case of using as Character, you need to validate that this character is whether "M" or "F". Other can be set as sex.

    You cannot use @Pattern for Character variable, You will get below exception.

    javax.validation.UnexpectedTypeException: HV000030: No validator could be found for type: java.lang.Character.

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