java.lang.IllegalArgumentException：无法找到命名参数 [用户]，需要 [最小、性别、最大] 之一

Question

我明白了

 INFO 4508 --- [nio-8081-exec-9]  j.r.q.QueryParameterSetter$ErrorHandling : Silently ignoring

java.lang.IllegalArgumentException: Could not locate named parameter [user], expecting one of [min, gender, max]
    at org.hibernate.query.internal.ParameterMetadataImpl.getNamedParameterDescriptor(ParameterMetadataImpl.java:218) ~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
    at org.hibernate.query.internal.ParameterMetadataImpl.getQueryParameter(ParameterMetadataImpl.java:187) ~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
    at org.hibernate.query.internal.QueryParameterBindingsImpl.getBinding(QueryParameterBindingsImpl.java:188) ~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
    at org.hibernate.query.internal.AbstractProducedQuery.setParameter(AbstractProducedQuery.java:493) ~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
    at org.hibernate.query.internal.AbstractProducedQuery.setParameter(AbstractProducedQuery.java:106) ~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
    at org.springframework.data.jpa.repository.query.QueryParameterSetter$NamedOrIndexedQueryParameterSetter.lambda$setParameter$4(QueryParameterSetter.java:113) [spring-data-jpa-2.1.9.RELEASE.jar:2.1.9.RELEASE]
    at org.springframework.data.jpa.repository.query.QueryParameterSetter$ErrorHandling$2.execute(QueryParameterSetter.java:185) ~[spring-data-jpa-2.1.9.RELEASE.jar:2.1.9.RELEASE]
    at org.springframework.data.jpa.repository.query.QueryParameterSetter$NamedOrIndexedQueryParameterSetter.setParameter(QueryParameterSetter.java:113) [spring-data-jpa-2.1.9.RELEASE.jar:2.1.9.RELEASE]
    at org.springframework.data.jpa.repository.query.ParameterBinder.lambda$bind$0(ParameterBinder.java:79) [spring-data-jpa-2.1.9.RELEASE.jar:2.1.9.RELEASE]
    at java.util.ArrayList.forEach(ArrayList.java:1257) ~[na:1.8.0_231]
    at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1082) ~[na:1.8.0_231]

代码

    @Repository
    public interface UserRepo extends JpaRepository<User, Long> {
      @Query("select new com.newcode.meeting.domain.dto.UserDto( " +
        " us, " +
        " SUM (case  when ul.userLike = :user then 1 else 0 end) > 0  " +
        ") from User us left join us.likes ul  where " +
        " us.birthDate BETWEEN :max and  :min " +
        " and  us.gender =:gender group by us ")
Page<UserDto> findUsersByBirthDateIsBetweenAndGenderDto(
        Pageable pageable,
        @Param("max") LocalDate max,
        @Param("min") LocalDate min,
        @Param("gender") Gender gender,
        @Param("user") User user
);

如果您需要有人查看，则类 UserDto 。我不知道还要添加什么，以便它不会写 -“看起来您的帖子主要是代码；请添加更多详细信息。”

 import com.fasterxml.jackson.annotation.JsonView;
 import com.newcode.meeting.domain.Image;
 import com.newcode.meeting.domain.ProfileDetail;
 import com.newcode.meeting.domain.User;
 import com.newcode.meeting.domain.Views;
 import com.newcode.meeting.dto.Role;
 import lombok.*;

 import java.net.URL;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.util.Set;

 @Data
 @EqualsAndHashCode(of = "id")
 @AllArgsConstructor
 @RequiredArgsConstructor
 @Getter
 @Setter
 @ToString(of = {"id", "meLiked"})
 @JsonView(Views.FullProfileDetail.class)
public class UserDto {
  private Long id;
  private String username;
  private URL userpic;
  private Gender gender;
  private LocalDate birthDate;
  private boolean isOnline;
  private Set<Role> roles;
  private boolean active;
  private String region;
  private String country;
  private LocalDateTime lastVisit;
  private ProfileDetail profileDetail;
  @JsonView(Views.FullProfileDetailImage.class)
  private Set<Image> images;
  private boolean meLiked;
  Integer likeNew;

public UserDto(User user, boolean meLiked) {
    this.id = user.getId();
    this.username = user.getUsername();
    this.userpic = user.getUserpic();
    this.gender = user.getGender();
    this.birthDate = user.getBirthDate();
    this.isOnline = user.isOnline();
    this.roles = user.getRoles();
    this.active = user.isActive();
    this.region = user.getRegion();
    this.country = user.getCountry();
    this.lastVisit = user.getLastVisit();
    this.profileDetail = user.getProfileDetail();
    this.images = user.getImages();
    this.meLiked = meLiked;
    this.likeNew = user.getLikeNew();
}
}

 public UserPageDto getAllUser(User user, String ageMax, String ageMin, String gender, Pageable pageable) {
    user = userRepo.findUserById(user.getId());

    LocalDate minDate = getDateForSearchUser(ageMin);
    LocalDate maxDate = getDateForSearchUser(ageMax);
    Gender sex;

    if (gender.equals(Gender.FEMALE.toString())) {
        sex = Gender.MALE;
    } else {
        sex = Gender.FEMALE;
    }
    Page<UserDto> page = userRepo.findUsersByBirthDateIsBetweenAndGenderDto(pageable, maxDate, minDate, sex, user);
    return new UserPageDto(
            page.getContent(),
            page.getNumber(),
            page.getTotalPages());
}

当我添加“可分页”时，我开始收到此错误。但结果是正确的。如果没有“Pageable”或参数“user”，则可以正常工作

问题是如何消除这个错误？

Answer 1

我有类似的问题。

此错误与您的查询无关 - 它抱怨 countQuery，它计算可分页的所有结果，因此它可以计算总共有多少页。

如果未显式声明，此 countQuery 会自动生成。因此它被生成为使用所有参数，但不使用 User（这一生成作为一种优化方式，可能会忽略 ORDER BY 或聚合，因为它只需要查询匹配的记录数，而订单或其他数据并不重要）。

所以生成的 countQuery 可能看起来像这样：

@Query("select count(us)" +
    "from User us left join us.likes ul  where " +
    " us.birthDate BETWEEN :max and  :min " +
    " and  us.gender =:gender group by us ")

正如您所看到的 - 受影响的行数与原始查询中的相同，但不包括 :user，这就是 Hibernate 无法验证 countQuery 的原因。

当删除 Pageable 作为参数时，您没有遇到同样的错误，因为在这种情况下，不会生成 countQuery （在不使用 :user 参数时也是如此）。

您现在有三个选择：

1. 使用 PageImpl 实现您自己的分页。
2. 显式定义您的查询以使用 :user 参数：

@Query(value = "select new com.newcode.meeting.domain.dto.UserDto( " +
    " us, " +
    " SUM (case  when ul.userLike = :user then 1 else 0 end) > 0  " +
    ") from User us left join us.likes ul  where " +
    " us.birthDate BETWEEN :max and  :min " +
    " and  us.gender =:gender group by us ",
    countQuery = "select count(us)" +
    "from User us left join us.likes ul  where " +
    " us.birthDate BETWEEN :max and  :min " +
    " and  us.gender =:gender group by us " +
    "order by :user)

3. 首先检索 UserEntities，然后在将其映射到 DTO 时 - 计算此附加列（通过单独的 JPA 查询或使用 Java 方法通过实体中的相关集合）。