SpringBoot 使用hibernate validator校验

public class CardDTO {

  @NotBlank
  private String cardId;

  @Size(min = 10, max = 10)
  @NotNull
  private String cardNum; // 卡号

  @Past
  @NotNull
  private Date createDate;

  @Range(max = 3)
  private String cardType;

  // 省略get set
}

@RestController
public class UserController {

  @PostMapping("simple")
  public Object simple(@RequestBody @Valid CardDTO cardDTO) {
    return cardDTO;
  }

}

public class UserDTO {

  @NotBlank
  private String userId;

  @NotBlank
  private String username;

  private String password;

  @Valid
  private List<CardDTO> cardList;

  //省略 get set
}

public class ValidList<E> implements List<E> {

  @Valid
  private List<E> list = new ArrayList<>();

  public List<E> getList() {
    return list;
  }

  public void setList(List<E> list) {
    this.list = list;
  }

  // 省略了 实现方法
}

public interface Insert {
}

public interface Update {
}

public class GroupCardDTO {

  @NotBlank(groups = {Update.class})
  private String id;

  @NotBlank(groups = {Insert.class})
  private String cardNum;

  @NotNull(groups = {Insert.class, Update.class})
  private Integer cardType;

  //省略 get set
}

@PostMapping("insert_card")
  public Object insert_card(@RequestBody @Validated(Insert.class) GroupCardDTO card){
    return card;
  }

public enum CaseMode {
  UPPER,
  LOWER
}

import javax.validation.Constraint;
import javax.validation.Payload;
import java.lang.annotation.*;

@Target( { ElementType.FIELD })
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy = CheckCaseValidator.class)
@Documented
public @interface CheckCase {

  String message() default "";

  Class<?>[] groups() default {};

  Class<? extends Payload>[] payload() default {};

  CaseMode value() default CaseMode.LOWER;

}

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;

public class CheckCaseValidator implements ConstraintValidator<CheckCase, String> {

  private CaseMode caseMode;

  @Override
  public void initialize(CheckCase constraintAnnotation) {
    this.caseMode = constraintAnnotation.value();
  }

  @Override
  public boolean isValid(String value, ConstraintValidatorContext context) {

    if (value == null || "".equals(value.trim())) {
      return false;
    }

    switch (this.caseMode) {
      case LOWER:
        return value.equals(value.toLowerCase());
      case UPPER:
        return value.equals(value.toUpperCase());
      default:
        return false;
    }

  }

}