java - 如何以编程方式配置 Bean 验证？

Question

我想使用bean验证的代码:

@Inject
private ValidatorFactory validatorFactory;
....

public Response create(@Context HttpServletRequest request) {
        ...
        Set<ConstraintViolation<UserDTO>> validate = validatorFactory.getValidator().validate(userDTO);
        validate.forEach(error-> System.err.println(error.getMessage()));
        if(validate.size() > 0){
            throw new ValidationException("userDTO is not valid!");
        }
        ...
}


public Response update(@Context HttpServletRequest request) {
        Set<ConstraintViolation<UserDTO>> validate = validatorFactory.getValidator().validate(userDTO);
        validate.forEach(error-> System.err.println(error.getMessage()));
        if(validate.size() > 0){
            throw new ValidationException("userDTO is not valid!");
        }
        ...
}

用户DTO:

public class UserDTO {
    private Integer id;
    private String userName;
    @NotNull(message = "is missing")
    private String locked;
    @Email(message = "email is not valid")
    private String email;
    @NotNull(message = "countryCode is missing")
    private String countryCode;
    ...getters-setters more variables...
}

所以我有一个post Http方法，我想在其中创建一个用户...如果缺少国家代码或锁定，或者电子邮件无效，则bean验证正常工作...但是当我只想更新例如电子邮件时验证也在整个 dto 类上运行...所以问题是我可以以及如何配置不每次都在每个变量上运行？

Answer 1

您应该使用Validator::validateProperty检查特定属性。您还可以将它们分组并通过 Validator::validate 查看。 (请参阅 here 教程)如果有多个属性。