Spring Boot 1.5.10 to 2.0 Spring Data Mongo@Query

Question

我对Spring Boot 1.5.10到2.0的迁移有最后一个问题。用@Query注释的查询不再工作。在1.5.10中，这些工作正常：以下是查询和实体：

@Document(collection = "credentials")
public class Credentials implements Serializable, Comparable<Credentials>
{

    private static final long serialVersionUID = -921533822040690113L;

    @Id
    private UUID id;

    @Indexed
    @Field("userId")
    private UUID userId;

    @Field("access")
    private List<Access> access;

    @Field("roles")
    private List<String> roles;

    /**
     * @return the id
     */
    public UUID getId()
    {
        return id;
    }

    /**
     * @param id the id to set
     */
    public void setId(UUID id)
    {
        this.id = id;
    }

    /**
     * @return the userId
     */
    public UUID getUserId()
    {
        return userId;
    }

    /**
     * @param userId the userId to set
     */
    public void setUserId(UUID userId)
    {
        this.userId = userId;
    }

    /**
     * @return the access
     */
    public List<Access> getAccess()
    {
        return access;
    }

    /**
     * @param access the access to set
     */
    public void setAccess(List<Access> access)
    {
        this.access = access;
    }

    /**
     * @return the roles
     */
    public List<String> getRoles()
    {
        return roles;
    }

    /**
     * @param roles the roles to set
     */
    public void setRoles(List<String> roles)
    {
        this.roles = roles;
    }

    /**
     *
     */
    public Credentials()
    {}

问题是：

public interface ICredentialsRepository extends MongoRepository<Credentials, UUID>
{

    /**
     * This query finds the credentials by userId
     * @param userId user identification
     * @return Credentials object
     */
    @Query("{ 'userId' : ?0}")
    Credentials retrieveWithUserId(UUID userId);
}

现在运行这个时，我得到了一个错误

com.mongodb.MongoQueryException: Query failed with error code 2 and error message 'unknown operator: $uuid' on server

同样，这在Spring Boot 1.5.10中运行得非常好。该项目包括spring-boot-starter-data-mongodb-2.0.0和spring-boot-configuration-processor-2.0.0

Answer 1

这是因为您的UUID它不是实体/文档类型。您应该在UUID类上使用@文档，在UUID类上使用@嵌入式和@嵌入式可在凭据类中UUID引用。