Question

我有一些模型类

public class Account {

    @Email
    private String email;

    @NotNull
    private String rule;
}

和spring-validator

public class AccountValidator implements Validator {

    @Override
    public boolean supports(Class aClass) {
        return Account.class.equals(aClass);
    }

    @Override
    public void validate(Object obj, Errors errors) {
        Account account = (Account) obj;
        ValidationUtils.rejectIfEmpty(errors, "email", "email.required");
        ValidationUtils.rejectIfEmpty(errors, "rule", "rule.required");

        complexValidateRule(account.getRule(), errors);
    }

    private void complexValidateRule(String rule, Errors errors) {
        // ...
    }
}

我在我的服务中运行

AccountValidator validator = new AccountValidator();
Errors errors = new BeanPropertyBindingResult(account, "account");
validator.validate(account, errors);

我可以在验证过程中添加约束@Email，@ NotNull（JSR-303）并且不在AccountValidator中描述这些规则吗？

我知道Spring控制器中的@Valid是如何工作的，但是服务层是什么？可能吗？如何以适当的方式进行此类验证？我可以使用Hibernate Validator吗？

Answer 1

Spring提供了一个适配器来合并两个验证API。有关详细信息，请参阅当前的Spring JavaDoc。

可能的实施方式是

public class AccountValidator implements Validator {

  private final SpringValidatorAdapter validator;

  public AccountValidator(SpringValidatorAdapter validator) {
      super();
      this.validator = validator;
  }

  @Override
  public boolean supports(Class aClass) {
      return Account.class.equals(aClass);
  }

  @Override
  public void validate(Object obj, Errors errors) {

      //jsr303
      validator.validate(obj, errors);

      //custom rules
      Account account = (Account) obj;
      complexValidateRule(account.getRule(), errors);
  }

  private void complexValidateRule(String rule, Errors errors) {
      // ...
  }
}

如何在服务层中组合JSR-303和Spring Validator类？

1 个答案: