使用@namedquery 更新查询无法正常工作

Posted 2023-03-23

【中文标题】使用@namedquery 更新查询无法正常工作

【英文标题】：update query using @namedquery does not work properly

【发布时间】：2021-03-11 13:39:52

【问题描述】：

这是我的 DUsers 类：

import org.hibernate.annotations.GenericGenerator;

import javax.persistence.*;
import java.util.Date;
import java.util.Objects;

@Entity
@Table(name = "d_users")
@NamedQueries(
        @NamedQuery(name = "bonsai.dropwizard.dao.d.DUsers.findAll",
                query = "select e from DUsers e"),
        @NamedQuery(name = "bonsai.dropwizard.dao.d.DUsers.findById",
                query = "select e from DUsers e "
                        + "where e.oAuthId = :id "),
        @NamedQuery(name = "bonsai.dropwizard.dao.d.DUsers.findByOAuthId",
                query = "select e from DUsers e "
                        + "where e.oAuthId = :oAuthId "),
        @NamedQuery(name = "bonsai.dropwizard.dao.d.DUsers.findByEmail",
                query = "select e from DUsers e "
                        + "where e.email = :email "),
        @NamedQuery(name="bonsai.dropwizard.dao.d.DUsers.confirm",
                query = "update DUsers set status = 'HELLO' where oAuthId = :id")

)
public class DUsers implements IDdbPojo
    @Id
    @GeneratedValue(generator="system-uuid")
    @GenericGenerator(name="system-uuid", strategy = "uuid")
    private String id;
    private String oAuthId;
    private String oAuthType;


    private String firstName;
    private String secondName;
    private String city;
    private String phone;
    private String email;
    private String profileLink;
    private String profilePic;
    private String status;
    private String notificationToken;
    private boolean confirmed;

    private String password;
    private String notes;
    private java.util.Date created_timestamp;
    private java.util.Date updated_timestamp;
    .. getters and setters on-going

如您所见，我已经定义了几个@NamedQueries，它们都可以正常工作，除了最后一个需要update 我的数据库。为了运行这个查询，我定义了两个函数：

private void confirmMailDAO(String id) 
        namedQuery("bonsai.dropwizard.dao.d.DUsers.confirm").setParameter("id", id);



public void confirmMailInternal(String id) 
    Session session = sessionFactory.openSession();
    try
        ManagedSessionContext.bind(session);
        Transaction transaction = session.beginTransaction();
        try
            confirmMailDAO(id);
            transaction.commit();
        catch (Exception e) 
            transaction.rollback();
            throw new RuntimeException(e);
        
     finally 
        session.close();
        ManagedSessionContext.unbind(sessionFactory);
    

在此之后，我定义了一个路径，后跟一个 POST 请求，该请求应该更新我的数据库，但遗憾的是它没有。

@POST
    @Path("/confirm/id")
    public void confirmMail(@NotNull @PathParam("id") String id)
        DUsers user = AppConfig.getInstance().getdUsersDAO().findByIdInternal(id);
        if (user == null) 
            throw new NotAuthorizedException("Error");
        
        AppConfig.getInstance().getdUsersDAO().confirmMailInternal(id);
    

有人知道我哪里错了吗？

【参考方案1】：

您在命名查询中设置了参数但忘记执行它。 将session 传递给您的方法并执行如下：

 private void confirmMailDAO(Session session, String id) 
        Query query = session.getNamedQuery("bonsai.dropwizard.dao.d.DUsers.confirm").setParameter("id", id);
        query.executeUpdate();

【讨论】：

天哪，我花了一整天的时间在这上面工作。非常感谢:)

很高兴它有帮助。