Syboos Commons BeanUtils validators - ValidateRegex

    @ValidateRegex(regex="[0-9a-zA-z]*")
    private String value;

    public String getValue() {
        return value;
    }
    public void setValue(String value) {
        this.value = value;
    }

    @ValidateRegex(when="login", message="value is must number or English alphabet.", regex="[0-9a-zA-z]*")
    private String value;

    ...

<field name="value">
    <validator class="com.syboos.beanutils.validator.RegexValidator" pattern="[0-9a-zA-z]*" message="value is must number or English alphabet." />
</field>